server performance slow

[Tapas Mishra]

I am using Apache2 on Debian Lenny.
I have a reverse proxy scenario.
The server I have is quite powerful in terms of hardware. 8GB Ram and
Quad core processor.
The problem coming right now is
http://www.myserver.com and http://www.myserver.com/app1 is being
served from the server I mentioned above.
there are also

http://myserver.com/app2
http://myserver.com/app3
http://myserver.com/app4
which are being reverse proxied at gateway and their performance is quite fast.
I am not running any application on any of the servers.Simple apache2
with a default index page on all of the above.
The page from http://www.myserver.com and http://www.myserver.com/app1
takes a loong time to upload.
What should I check in apache2 logs or some thing else should I check in.
I am having a virtualization thing Xen running which is handling
gateway and apache2 on Xen Dom0 is redirecting to the Guest Operating
Systems.Have many Guest instances running but only one guest instance
has this problem.
The site is right now not being accessed by any one so there is no load as such.


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Re: [TexLive] This math formula work a few month a go, but nowadays it didn't work anymore

[Johan Grönqvist]

2010-04-30 00:04, Marcelo Laia skrev:

According to the debian site, however, the file is not available
in squeeze:

It seems to come from a cmex package. Can that package have
changed and dropped the fmex* files? It now seems to contain
cmex*-files instead, but I do not know if that is the correct interpretation.




Hummm! And now? What to do?

If I do a search in i386 (I have both kernels), the results is the same!
What you suggest me? Contact to maintainers? Who is he/she?




As you do not explicitly request the font to be used, I expected latex 
to choose some other font instead. Does it work if you run the command 
update-updmap and try again?


Otherwise, I have two suggestions:

1) Send and email to the debian-tex mailing list 
(). That list is the official 
maintainer address for texlive-base, according to 
().


2) Report the problem as a bug. ().

Before doing any of those two, you should rewrite the example document 
to be as small and simple as possible (still showing the problem) and 
perhaps also translate the text to English.


Regards

Johan


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Re: downloaded .jnlp won't open

[godo]

Zeroing out /proc/sys/net/ipv6/bindv6only helped, but then I bogged down
at the login window.


Hi Ron,
what exactly happened?
I just try the same from my Sid box and 
http://www.pscode.org/jws/clipserv.jnlp opened Java window "Clipboard 
Service".

Here is a pic http://dobosevic.com/nix/clip.png

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 English: www.dobosevic.com/en/
Registered Linux User #503414


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Re: iptables..WTF???

[Alexander Samad]

you haven't been affected by the bind to ipv6 setting ?


On Fri, Apr 30, 2010 at 8:23 AM, Raven  wrote:
> On Thu, 2010-04-29 at 15:12 -0700, Kevin Ross wrote:
>> > What the heck happened this afternoon??
>>
>> I don't know, but I'd start by making sure your interface names and IP 
>> addresses haven't changed for some reason.
>>
>>
>
> Everything seems pretty kosher here:
>
> r...@dl580:~# ifconfig
> eth0      Link encap:Ethernet  HWaddr 00:03:47:42:5c:17
>          inet addr:10.0.1.2  Bcast:10.0.1.255  Mask:255.255.255.0
>          inet6 addr: fe80::203:47ff:fe42:5c17/64 Scope:Link
>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>          RX packets:269554 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:377509 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:1000
>          RX bytes:94728650 (90.3 MiB)  TX bytes:529355083 (504.8 MiB)
>
> eth1      Link encap:Ethernet  HWaddr 00:03:47:42:5c:18
>          inet addr:PUBIP  Bcast:PUBBC  Mask:255.255.255.248
>          inet6 addr: fe80::203:47ff:fe42:5c18/64 Scope:Link
>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>          RX packets:965 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:60601 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:1000
>          RX bytes:222867 (217.6 KiB)  TX bytes:10472879 (9.9 MiB)
>
> lo        Link encap:Local Loopback
>          inet addr:127.0.0.1  Mask:255.0.0.0
>          inet6 addr: ::1/128 Scope:Host
>          UP LOOPBACK RUNNING  MTU:16436  Metric:1
>          RX packets:14139 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:14139 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:0
>          RX bytes:1690483 (1.6 MiB)  TX bytes:1690483 (1.6 MiB)
>
>
> I checked all the logs but nothing suggests there was any interface or
> IP modification (both IPs are static).
>
> -RV
>
>
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Re: how to redirect a domain in virtualmin

[Tapas Mishra]

You may try using Apache Reverse Proxy feature.

On Thu, Apr 29, 2010 at 10:05 PM, Jozsi Vadkan  wrote:
> The question is simple.
>
> The answer [is there any] isn't simple [it's not implemented in
> virtualmin yet?].
>
> So:
>
> There are two domains:
>
> AAA.com
>
> and:
>
> BBB.com
>
> Ok! Both domains are on the Virtualmin server, Ok!
>
> The big question:
>
> How can I redirect
>
> AAA.com
>
> to:
>
> BBB.com/index.php?lang=en
>
> ?
>
> In the menu: Apache Servers -> AAA.com -> Aliases and Redirections -> I
> fill the forms as the:
>
> http://doxfer.com/Webmin/ApacheWebserver
>
> says it would work -> Save -> Apply Changes -> it doesn't work.
>
> Webmin version: 1.350 / Lenny
>
>
>
> So is there an offical howto/doc/anyTHING, that describes, how to
> redirect "AAA.com" to "BBB.com/index.php?lang=en" ???
>
>
> Thank you.
>
> Sorry for posting to two mailing lists, but I just can't seem to find a
> working howto :O [I read about this problem in forums, others complain
> about it too!]
>
>
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Re: nslookup from Windows resolves domain and pdc correctly but still gets cannot contact on samba 3.2.5-4 on lenny

[Siju George]

On Thu, Apr 29, 2010 at 2:02 PM, Tom H  wrote:
>
> My Domain SMB knowledge is slightly rusty but here goes...
>
> 1. Your Samba server's ip address ends with a 0, which, AFAIK, is
> reserved for network addresses (unless it has some special purpose
> like the the /32 netmask). What is the output of "ifconfig -a"?
>

Thanks for the help Tom :-)

So What I did was remove the interfaces restrictions altogether

and put

172.16.2.0hifxnx

in the hosts file of windows workstations

now every thing is fine.

but I had to manuall create the group 'machines' to successfully join the domain

Thanks

--Siju


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Re: aptitude and held packages

[Andrei Popescu]

On Mon,26.Apr.10, 10:29:06, Rick Pasotto wrote:
> I just upgraded apt and aptitude to the latest testing version. Although
> 'aptitude -s safe-upgrade' tells me that '172 not upgraded' it no longer
> lists them. Is this a bug or an intentional change?

It probably depends on whether you consider the full list of 172 
packages useful or not ;)

Regards,
Andrei
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Re: [OT] Home UPS (was Filesystem recommendations)

[Stan Hoeppner]

ow...@netptc.net put forth on 4/29/2010 2:26 PM:

> Also I might have an issue with Stan's use of AND.  While surge
> protection of printers is a good idea, most UPS vendors advise
> against connecting the printer to the UPS for power protection
> Larry

Most inkjets on a UPS are fine (for small jobs), lasers no--too much current
draw heating up the fuser.  I've never printed during a power outage but I
could if I really needed to.  The odds of that are terribly low though.

Them main reason for plugging all my equipment into the UPS is that the MOVs
in UPSes are usually much larger and of better quality than those found in
surge protector power strips.  For those who do not know, an MOV or metal
oxide varistor, is the device that sucks up the excess voltage and current
that frequently enters lines during a lighting strike.

-- 
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Re: X server starts on the wrong console (was: New monitor, how to change screen resolution?)

[Stephen Powell]

On Thu, 29 Apr 2010 18:26:26 -0400 (EDT), Redalert Commander wrote:
> On Thu, 2010-04-29 at 14:43 -0700, Alan Ianson wrote:
>> On Thu, 2010-04-29 at 17:35 -0400, Stephen Powell wrote:
>>> 
>>> Then, in theory, restarting the X server again
>>> (such as with /etc/init.d/gdm restart) should cause the X server
>>> to restart on vt 7.  This used to work, but the last time I tried
>>> it I ended up with two X servers, one on VT 7 and one on VT 8!
>>> I had to reboot to clean things up.  This situation is a mess and
>>> seems to be getting worse.  As long as you login to GNOME only once
>>> per boot and shutdown the system from GNOME you won't have this
>>> problem.  The initial allocation of VT 7 after a reboot works fine.
>>> But if you logout of GNOME after logging in, you're likely to have
>>> this problem.  It doesn't seem to fail all the time, though.  Perhaps
>>> it is a timing-related problem.
>> 
>> I've noticed this too lately, although i use the nvidia driver created
>> by module assistant.
>> 
>> I wonder if anyone not using the nv or nvidia driver also see this?
> 
> I seem to have this all the time, even right after booting, although...
> I have 3 displays, and 2 ports on my GPU, so I often switch them, after
> doing so, I copy the relevant xorg.conf to it's proper location, and
> restart gdm. In doing so, I only log in into the first console, using
> ctrl+alt+F1, do the copy and /etc/init.d/gdm restart, at this point x is
> running in VT8, not 7. Up till this point, I haven't logged in to gnome.

But the key is restarting the X server, not necessarily a logout and
login to the GNOME desktop.  A login/logout sequence is simply the most
common way to restart the X server.  The X server can only start once
safely.  After that, who knows what VT it will end up on, and what parts
of the old instance of the server will get terminated.  Has anyone seen
something like this on a non-Nvidia driver (not nv and not nvidia)?

-- 
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 : :'  :
 `. `'`
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Re: installing Lenny packages in Squeeze

[Jimmy Johnson]

Boyd Stephen Smith Jr. wrote:

On Wednesday 28 April 2010 20:35:29 Rob Owens wrote:

If I were to install a bare-bones Squeeze system, then add Lenny
repositories and declare Lenny to be the Default-Release in apt.conf,
can I expect to have many problems installing a full desktop environment
from the Lenny repos?  (Gnome, LXDE, or Fluxbox, most likely).



This type of setup is neither tested nor supported.  Since a number of library 
transitions have already gone into Squeeze, I would expect issues, though I 
don't know what.



I'm using the Squeeze+KDE4 version of Debian Live installed and it seems
to be Lenny upgraded to Squeeze, it's definitely broken because the
weather widgets will not config, I've seen the problem before on every
Lenny upgrade and it's the only problem I can find, on that system I've
been able to upgrade the kernel with no problem.

I would not recommend Debian Live to anyone looking for a usable system.
--
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SimplyMEPIS 8.5 at sda9
Registered Linux User #380263



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Re: Filesystem recommendations

[Joe Brenner]

Boyd Stephen Smith Jr.  wrote:
> Joe Brenner wrote:
> > Ron Johnson  wrote:
> > > B. Alexander wrote:
> > > > Ron Johnson  wrote:

> > > >> XFS is the canonical fs for when you have lots of Big Files.  I've
> > > >> also seen simple benchmarks on this list showing that it's faster
> > > >> than ext3/ext4.
> > > >
> > > > Thats cool. What about Lots of Little Files? That was another of the
> > > > draws of reiser3.
> > >
> > > That same unofficial benchmark showed surprising small-file speed by
> > > xfs.

> > Would you happen to have any links to such benchmarks, unofficial or
> > otherwise?

> > My experience has been that whenever I look at filesystem benchmarks,
> > they skip the many-small-files case.  I've always had the feeling that
> > most of the big filesystems cared a lot about scaling up in file-size,
> > but not too much about anything else.

> NB: This is my best recollection; I'm not looking this up right now.  Please
> check my facts, I'd love to know if I'm wrong.

Like I said, I *have* looked at filesystem comparisons a number of times.

It's my problem to check your assertions?  Why isn't it your problem to
check my assertions?

> > I'm a Reiser3 user myself, and I've never had any problems with it.

> > (The trouble with it being "long in the tooth" is mostly hypothetical,
> > isn't it?)
>
> Not really.

Outside of one mention of "bugs on reiserfs that will not be fixed",
you're pretty much just describing the theory.  I do understand that
using relatively unsupported software, even if it's pretty mature
software, can have it's problems.

Just doing a few quick websearches, I'm reading about ReiserFS bugs
fixed as recently as 2006, 2007... It's not like it's not getting any
attention from developers.

> In addition, as file system technology advances, reiserfs will become
> less attractive for new installs and it will become more attractive to
> migrate way from it.

I think you're better off if you rely on really well-tested migration
tools (e.g. "tar").


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Re: Filesystem recommendations

[Stan Hoeppner]

Joe Brenner put forth on 4/29/2010 2:17 PM:

> Would you happen to have any links to such benchmarks, unofficial or
> otherwise?

Here's a somewhat old one from 2006 using Etch and rather old hardware (old
then and very old now).  The numbers are likely somewhat close to what you'd
get with a current kernel on the same hardware given that fs performance
typically doesn't make anything close to giant leaps within a major kernel
rev, in this case 2.6.x.

http://www.debian-administration.org/articles/388


Here's one from 2003 with some Bonnie++ testing:

http://everything2.com/index.pl?node_id=1479435

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Re: downloaded .jnlp won't open

[Ron Johnson]

On 04/29/2010 06:42 AM, Camaleón wrote:

On Thu, 29 Apr 2010 06:35:41 -0500, Ron Johnson wrote:


On 04/27/2010 11:11 AM, Camaleón wrote: [snip]


How about these sample files? Can you run them?

http://pscode.org/jws/api.html

I'm afraid the problem resides not in your Icewasel or Java setup but
in JNLP file itself. Try running others.



When I click on any of the "Launch ... Demo" buttons, it asks me to open
the .jnlp file with /usr/lib/jvm/java-6-sun-1.6.0.20/jre

When I do so, the Java splash screen pops up, then I get an Application
Error window saying "Unable to launch application."


You're running Squeeze, right? In Lenny there is no problem :-)


Sid.


The base exceptions are:
java.net.SocketException: Network is unreachable
  at java.net.PlainSocketImpl.socketConnect(Native Method) at
  java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)

com.sun.deploy.net.FailedDownloadException: Unable to load resource:
http://www.pscode.org/jws/clipserv.jnlp


So you are facing the same bug the OP has with java. But I thought he
alredy bypassed this... threads ago ;-)



I should have read the complete thread.

Zeroing out /proc/sys/net/ipv6/bindv6only helped, but then I bogged 
down at the login window.


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Re: Multiple Graphics cards and HDMI: How to?

[Victor Padro]

On Thu, Apr 29, 2010 at 6:53 PM, KS  wrote:
> Hi all,
>
> I have setup a system with Gigabyte MA-790GPT-UD3H motherboard and use a
> Nvidia GeForce 8600GTS PCI-E video card. It also has an onboard ATI
> Radeon HD 3300 graphics chipset. The PCI-E card is being used at the
> moment for the monitor (nvidia driver). I was thinking of using the HDMI
> port(onboard) to play movies directly on the TV rather than using a
> DVD-RW (current method).
>
> I did configure the onboard chipset to be detected after the PCI-E card
> as D-SUB+HDMI output in the BIOS. This is on a Debian Unstable box.
>
> The question is: would it be possible to use two graphics cards from
> different manufacturers?
>
> I also noticed that the onboard chipset does not come up with lspci.
>
> Any suggestions on how to proceed with this?
> /KS
> 
> $> lspci
> 00:00.0 Host bridge: Advanced Micro Devices [AMD] RS780 Host Bridge
> 00:02.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge
> (ext gfx port 0)
> 00:0a.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge
> (PCIE port 5)
> 00:11.0 SATA controller: ATI Technologies Inc SB700/SB800 SATA
> Controller [IDE mode]
> 00:12.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0
> Controller
> 00:12.1 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller
> 00:12.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller
> 00:13.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0
> Controller
> 00:13.1 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller
> 00:13.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller
> 00:14.0 SMBus: ATI Technologies Inc SBx00 SMBus Controller (rev 3c)
> 00:14.1 IDE interface: ATI Technologies Inc SB700/SB800 IDE Controller
> 00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA)
> 00:14.3 ISA bridge: ATI Technologies Inc SB700/SB800 LPC host controller
> 00:14.4 PCI bridge: ATI Technologies Inc SBx00 PCI to PCI Bridge
> 00:14.5 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI2
> Controller
> 00:18.0 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron,
> Athlon64, Sempron] HyperTransport Configuration
> 00:18.1 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron,
> Athlon64, Sempron] Address Map
> 00:18.2 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron,
> Athlon64, Sempron] DRAM Controller
> 00:18.3 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron,
> Athlon64, Sempron] Miscellaneous Control
> 00:18.4 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron,
> Athlon64, Sempron] Link Control
> 01:00.0 VGA compatible controller: nVidia Corporation G84 [GeForce 8600
> GTS] (rev a1)
> 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
> RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)
> 03:0e.0 FireWire (IEEE 1394): Texas Instruments TSB43AB23
> IEEE-1394a-2000 Controller (PHY/Link)
>
>
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>

AFAIK, when you use a PCI-e VGA onboard video is disable, and your
lspci states that...

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"Everything that irritates us about others can lead us to an
understanding of ourselves"


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Multiple Graphics cards and HDMI: How to?

[KS]

Hi all,

I have setup a system with Gigabyte MA-790GPT-UD3H motherboard and use a
Nvidia GeForce 8600GTS PCI-E video card. It also has an onboard ATI
Radeon HD 3300 graphics chipset. The PCI-E card is being used at the
moment for the monitor (nvidia driver). I was thinking of using the HDMI
port(onboard) to play movies directly on the TV rather than using a
DVD-RW (current method).

I did configure the onboard chipset to be detected after the PCI-E card
as D-SUB+HDMI output in the BIOS. This is on a Debian Unstable box.

The question is: would it be possible to use two graphics cards from
different manufacturers?

I also noticed that the onboard chipset does not come up with lspci.

Any suggestions on how to proceed with this?
/KS

$> lspci
00:00.0 Host bridge: Advanced Micro Devices [AMD] RS780 Host Bridge
00:02.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge
(ext gfx port 0)
00:0a.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge
(PCIE port 5)
00:11.0 SATA controller: ATI Technologies Inc SB700/SB800 SATA
Controller [IDE mode]
00:12.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0
Controller
00:12.1 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller
00:12.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller
00:13.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0
Controller
00:13.1 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller
00:13.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller
00:14.0 SMBus: ATI Technologies Inc SBx00 SMBus Controller (rev 3c)
00:14.1 IDE interface: ATI Technologies Inc SB700/SB800 IDE Controller
00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA)
00:14.3 ISA bridge: ATI Technologies Inc SB700/SB800 LPC host controller
00:14.4 PCI bridge: ATI Technologies Inc SBx00 PCI to PCI Bridge
00:14.5 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI2
Controller
00:18.0 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron,
Athlon64, Sempron] HyperTransport Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron,
Athlon64, Sempron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron,
Athlon64, Sempron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron,
Athlon64, Sempron] Miscellaneous Control
00:18.4 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron,
Athlon64, Sempron] Link Control
01:00.0 VGA compatible controller: nVidia Corporation G84 [GeForce 8600
GTS] (rev a1)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)
03:0e.0 FireWire (IEEE 1394): Texas Instruments TSB43AB23
IEEE-1394a-2000 Controller (PHY/Link)


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Re: X server starts on the wrong console (was: New monitor, how to change screen resolution?)

[Redalert Commander]

On Thu, 2010-04-29 at 14:43 -0700, Alan Ianson wrote:
> On Thu, 2010-04-29 at 17:35 -0400, Stephen Powell wrote:
> 
> > and it will work.  Then, in theory, restarting the X server again
> > (such as with /etc/init.d/gdm restart) should cause the X server
> > to restart on vt 7.  This used to work, but the last time I tried
> > it I ended up with two X servers, one on VT 7 and one on VT 8!
> > I had to reboot to clean things up.  This situation is a mess and
> > seems to be getting worse.  As long as you login to GNOME only once
> > per boot and shutdown the system from GNOME you won't have this
> > problem.  The initial allocation of VT 7 after a reboot works fine.
> > But if you logout of GNOME after logging in, you're likely to have
> > this problem.  It doesn't seem to fail all the time, though.  Perhaps
> > it is a timing-related problem.
> 
> I've noticed this too lately, although i use the nvidia driver created
> by module assistant.
> 
> I wonder if anyone not using the nv or nvidia driver also see this?
> 
> 

I seem to have this all the time, even right after booting, although...
I have 3 displays, and 2 ports on my GPU, so I often switch them, after
doing so, I copy the relevant xorg.conf to it's proper location, and
restart gdm. In doing so, I only log in into the first console, using
ctrl+alt+F1, do the copy and /etc/init.d/gdm restart, at this point x is
running in VT8, not 7. Up till this point, I haven't logged in to gnome.




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RE: iptables..WTF???

[Raven]

On Thu, 2010-04-29 at 15:12 -0700, Kevin Ross wrote:
> > What the heck happened this afternoon??
> 
> I don't know, but I'd start by making sure your interface names and IP 
> addresses haven't changed for some reason.
> 
> 

Everything seems pretty kosher here:

r...@dl580:~# ifconfig 
eth0  Link encap:Ethernet  HWaddr 00:03:47:42:5c:17  
  inet addr:10.0.1.2  Bcast:10.0.1.255  Mask:255.255.255.0
  inet6 addr: fe80::203:47ff:fe42:5c17/64 Scope:Link
  UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
  RX packets:269554 errors:0 dropped:0 overruns:0 frame:0
  TX packets:377509 errors:0 dropped:0 overruns:0 carrier:0
  collisions:0 txqueuelen:1000 
  RX bytes:94728650 (90.3 MiB)  TX bytes:529355083 (504.8 MiB)

eth1  Link encap:Ethernet  HWaddr 00:03:47:42:5c:18  
  inet addr:PUBIP  Bcast:PUBBC  Mask:255.255.255.248
  inet6 addr: fe80::203:47ff:fe42:5c18/64 Scope:Link
  UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
  RX packets:965 errors:0 dropped:0 overruns:0 frame:0
  TX packets:60601 errors:0 dropped:0 overruns:0 carrier:0
  collisions:0 txqueuelen:1000 
  RX bytes:222867 (217.6 KiB)  TX bytes:10472879 (9.9 MiB)

loLink encap:Local Loopback  
  inet addr:127.0.0.1  Mask:255.0.0.0
  inet6 addr: ::1/128 Scope:Host
  UP LOOPBACK RUNNING  MTU:16436  Metric:1
  RX packets:14139 errors:0 dropped:0 overruns:0 frame:0
  TX packets:14139 errors:0 dropped:0 overruns:0 carrier:0
  collisions:0 txqueuelen:0 
  RX bytes:1690483 (1.6 MiB)  TX bytes:1690483 (1.6 MiB)


I checked all the logs but nothing suggests there was any interface or
IP modification (both IPs are static).

-RV


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Re: VM software for personal use?

[Clive McBarton]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Mark Allums wrote:
> On 4/26/2010 5:24 PM, Clive McBarton wrote:
>> -BEGIN PGP SIGNED MESSAGE-
>> Hash: SHA1
>>
>> Mark Allums wrote:
>>> Some people are scared of shared folders as possible attack vectors,
>>> thus security risks.
>>
>> What exactly are those risks?

> It depends on the mechanism used to share the folders.  If if is through
> a network interface, then the risks are similar to the risks on any
> trusted intranet.

OK.

> If the folders are provided by the VM internals, then the risk is what
> you can lose by a successful attack on the guest kernel or the host VM.

And how much is that? Assuming there's one folder on the host that the
guest can write to (that's what I understand by "shared folder"), than a
successful attack can fill up space on the host, but that's it. It
cannot get out of this folder as far as I can see.

>  If the host VM is kernel-based, then the risk is that of a (host)
> kernel attack.

OK.

> Note: I'm using "risk" as in "what can you lose?"  If you mean attack
> vectors, then those should be evident

I'm not sure I get the distinction "risk" vs "attack vector". Nor do I
find those particularly evident. Which is probably my lack of knowledge
in that area. Could you please enlighten me here?

> Google Joanna Rutkowska.  She probably knows as much as
> anyone about breaking out of a VM to attack the host.

Just one person can do this? I feel safe now.

> I'm sure others on this list know more than I do about it.

I hope they share their knowledge here, so I can learn.
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RE: iptables..WTF???

[Kevin Ross]

> What the heck happened this afternoon??

I don't know, but I'd start by making sure your interface names and IP 
addresses haven't changed for some reason.


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Re: Re: Re: [TexLive] This math formula work a few month a go, but nowadays it didn't work anymore

[Marcelo Laia]

> Perhaps it exists in lenny but not in squeeze? My apt-file search
> also says that it exists, but I do not even have the directory in
> which the file is supposed to reside.
>
> According to the debian site, however, the file is not available
> in squeeze:
>
> 
> 
>
> It seems to come from a cmex package. Can that package have
> changed and dropped the fmex* files? It now seems to contain
> cmex*-files instead, but I do not know if that is the correct interpretation.
>
> Regards
>
> Johan


Hummm! And now? What to do?

If I do a search in i386 (I have both kernels), the results is the same!




What you suggest me? Contact to maintainers? Who is he/she?

Thank you very much!

-- 
Marcelo Luiz de Laia
Lages - SC - Brasil (Brazil)
Linux user number 487797


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Re: nslookup from Windows resolves domain and pdc correctly but still gets cannot contact on samba 3.2.5-4 on lenny

[Tom H]

On Wed, Apr 28, 2010 at 7:50 AM, Siju George  wrote:
>
> I have installed
> ii  samba                                 2:3.2.5-4lenny9            a
> ii  samba-common                          2:3.2.5-4lenny9
> On Debian Lenny and i am sharing directories to Windows Users successfully.
>
> I configured it as a PDC with the following configuration.
> [global]
>        workgroup = HIFXNX
>        netbios name = HIFXNXDC
>        server string = HIFXNX Domain Controller, PHP Development
> Server, Subversion Server, DNS Server
>        interfaces = 172.16.2.0/255.255.255.255
>        bind interfaces only = Yes
>        obey pam restrictions = Yes
>        passdb backend = tdbsam
>        pam password change = Yes
>        passwd program = /usr/bin/passwd %u
>        passwd chat = *Enter\snew\s*\spassword:* %n\n
> *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
>        unix password sync = Yes
>        syslog = 0
>        log file = /var/log/samba/log.%m
>        max log size = 1000
>        name resolve order = lmhosts host wins bcast
>        add user script = /usr/sbin/adduser --quiet
> --disabled-password --gecos "" %u
>        add group script = /usr/sbin/addgroup --force-badname %g
>        add machine script = /usr/sbin/useradd -g machines -c "%u
> machine account" -d /var/lib/samba -s /bin/false %u
>        domain logons = Yes
>        os level = 33
>        preferred master = Auto
>        domain master = Yes
>        dns proxy = No
>        panic action = /usr/share/samba/panic-action %d
> [homes]
>        comment = Home Directories
>        valid users = %S
>        create mask = 0700
>        directory mask = 0700
>        browseable = No
> [netlogon]
>        comment = Network Logon Service
>        path = /home/samba/netlogon
>        guest ok = Yes
>        share modes = No
>
> I can get the domain & domain controller resolved using DNS from the
> Windows XP machine.
> But when I try to join the domain from the Windows XP machine.
> I get the error
> "A Domain Controller for the domain hifxnx.local could not be contacted"
> and the debug log file dcdiag.txt contains these details.
> The following error occurred when DNS was queried for the service
> location (SRV) resource record used to locate a domain controller for
> domain hifxnx.local:
> The error was: "DNS name does not exist."
> (error code 0x232B RCODE_NAME_ERROR)
> The query was for the SRV record for _ldap._tcp.dc._msdcs.hifxnx.local
> Common causes of this error include the following:
> - The DNS SRV record is not registered in DNS.
> - One or more of the following zones do not include delegation to its
> child zone:
> hifxnx.local
> local
> . (the root zone)

My Domain SMB knowledge is slightly rusty but here goes...

1. Your Samba server's ip address ends with a 0, which, AFAIK, is
reserved for network addresses (unless it has some special purpose
like the the /32 netmask). What is the output of "ifconfig -a"?

2. In your smb.conf:

2.a The following are missing (although they may be the default
settings for these variables):
security = user
local master = yes

2.b I have forgotten why, but AFAIK "127.0.0.1" should be listed in
"interfaces =".

2.c What does "share modes = No" do?

3. If you have not yet created a computer account for the Windows box,
you have to log on to the domain as root (or as a user with the right
to add a machine account) the first time that you do so from a Samba
client for the "add machine script =" variable to do its magic.

4. The "_ldap._tcp" DNS SRV records are needed for an AD domain
(IIRC there are 6 +-1). I have never set up an AD Samba PDC but your
smb.conf settings look like those of an NT4 Samba PDC so it may just
be a misleading error/failure message. Your Windows box seems to be an
XP VM but just in case the netbios name is misleading, see
http://wiki.samba.org/index.php/Windows7


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Re: Filesystem recommendations

[Clive McBarton]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Stan Hoeppner wrote:
> Rob Owens put forth on 4/28/2010 8:26 PM:
>> Many/most
>> users don't run a UPS and sudden unexpected power loss is a real
>> possibility for them.
> 
> Really?  I was under the impression that laptops and netbooks are now the
> primary computer of well over 50% of users worldwide (not counting smart
> phones).  Laptops have a built-in UPS.  

A battery is kinda like an UPS, but not really. Two reasons:

Some folks take it out when plugged in. This prolongs its lifetime.
Obviously reduces UPS functionality a bit.

The battery may not correcly predict running time, hence actually
causing the powerdown which the UPS is supposed to protect against.
This can happen even when the user "plugged in" their laptop but forgot
to connect one end of the cable and does not check the little
battery/plug icon on their screen.

> sure there are many people who can barely afford a PC let alone a UPS.  Used
> laptops are a great fit for those users, assuming the batteries aren't shot.

But the battery is usually the first thing to go. You can't even get a
decently long warranty on a new battery AFAIK.

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Re: X server starts on the wrong console (was: New monitor, how to change screen resolution?)

[Alan Ianson]

On Thu, 2010-04-29 at 17:35 -0400, Stephen Powell wrote:

> and it will work.  Then, in theory, restarting the X server again
> (such as with /etc/init.d/gdm restart) should cause the X server
> to restart on vt 7.  This used to work, but the last time I tried
> it I ended up with two X servers, one on VT 7 and one on VT 8!
> I had to reboot to clean things up.  This situation is a mess and
> seems to be getting worse.  As long as you login to GNOME only once
> per boot and shutdown the system from GNOME you won't have this
> problem.  The initial allocation of VT 7 after a reboot works fine.
> But if you logout of GNOME after logging in, you're likely to have
> this problem.  It doesn't seem to fail all the time, though.  Perhaps
> it is a timing-related problem.

I've noticed this too lately, although i use the nvidia driver created
by module assistant.

I wonder if anyone not using the nv or nvidia driver also see this?


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X server starts on the wrong console (was: New monitor, how to change screen resolution?)

[Stephen Powell]

On Thu, 29 Apr 2010 16:27:38 -0400 (EDT), Redalert Commander wrote:
> Stephen Powell wrote:
>> James Stuckey wrote:
>>>
>>> (7)
>>> ...
>>> (++) using VT number 8
>> 
>> This is off topic, but did you notice that the X server initialized itself
>> on VT number 8 instead of VT number 7?  That means, for example, that if
>> you are on virtual console number 1 (text mode) and wish to switch to
>> the X server, you will need to use Ctrl+Alt+F8 instead of the usual
>> Ctrl+Alt+F7.  I've noticed this bug too lately.  In fact, it's
>> possible that you have have two copies of the X server running.
>> One on VT 7 and one on VT 8.  Wouldn't that be a hoot?
> 
> I noticed that on my system as well, and you might be correct, although
> VT7 only gives you a black screen with blinking cursor.
> You might be right about the 2 x servers:
> ste...@pc-steven:~$ ps aux | grep gdm
> root  2215  0.0  0.0  15372  1716 ?Ss   21:15 0:00 /usr/sbin/gdm
> root  2220  0.0  0.1  15712  3248 ?S21:15 0:00 /usr/sbin/gdm
> root  2229  2.3  2.1  77360 66380 tty7 Ss+  21:15 1:22 /usr/bin/X :0 
> -audit 0 -auth /var/lib/gdm/:0.Xauth -nolisten tcp vt7
> steven3880  0.0  0.0   3116   768 pts/0S+   22:14   0:00 grep gdm
> 
> Might be a bug in the NVidia kernel module? Or is this something we can
> fix in the X configuration? (it would be nice to have in on VT7 again as
> default)

First of all, I need to correct myself.  When switching from a text console
to the X console, you don't need Ctrl.  For example, Alt+F7 (or Alt+F8
in this case) will work fine.  Ctrl is only needed when switching from the
X console to a text console.  For example, Ctrl+Alt+F1.  I know you know
that, but for the sake of correcting my earlier mistake I mention it.

Second, the problem with the X server starting on the wrong console seems
to be related to a failure to deallocate virtual terminal 7 when the old
X server stops.  I'm using the nv driver, which is also from nvidia, though
it is open source.  I'm wondering if anybody has seen this on a non-nvidia
driver.

If I switch to a text console, login as root, and issue

   deallocvt 7

I get an error something like this:

   Device or resource busy

Someone gave me the tip some time ago that if I kill the process

   console_kit

or something like that (I don't remember the exact name) then I can
do a

   deallocvt 7

and it will work.  Then, in theory, restarting the X server again
(such as with /etc/init.d/gdm restart) should cause the X server
to restart on vt 7.  This used to work, but the last time I tried
it I ended up with two X servers, one on VT 7 and one on VT 8!
I had to reboot to clean things up.  This situation is a mess and
seems to be getting worse.  As long as you login to GNOME only once
per boot and shutdown the system from GNOME you won't have this
problem.  The initial allocation of VT 7 after a reboot works fine.
But if you logout of GNOME after logging in, you're likely to have
this problem.  It doesn't seem to fail all the time, though.  Perhaps
it is a timing-related problem.

-- 
  .''`. Stephen Powell
 : :'  :
 `. `'`
   `-


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Re: Making onscreen fonts read-able[was:New monitor, how to change screen resolution?]

[Camaleón]

On Thu, 29 Apr 2010 22:20:36 +0200, James Stuckey wrote:

> On Thu, Apr 29, 2010 at 10:15 PM, Camaleón wrote:

>> Option   "DPI" "96 x 96"
>>
>> Under your /etc/X11/Xorg.conf "Monitor" section?
>>
>> (make a backup copy of the original file before making any change)
>>
>> I can't tell if that made a change or not. In either case, the fonts
>> still
> look like garbage/aren't easy to read. 
> I should note, the fonts in what
> I'm typing right now (gmail) aren't bad -- it's the fonts on the menu
> bar in iceweasel/icedove/whatever program.

Can you please upload a snapshot so we can see what you get?

Greetings,

-- 
Camaleón


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iptables..WTF???

[Raven]

Hi all.
Couple years ago I set up a very basic script to have a machine (running
SID) on my network to act as a router. Two network interfaces, one with
a public IP and the other on the local LAN subnet. It does NAT as well
as open some inbound ports (SSH, WWW).
Today, at roughly 4PM, the firewall setup stopped working. I was still
able to forward packets from a LAN client, but any connection
originating from the box itself could not be established.
I tried ping and traceroute but none of them went through.

This is my firewall script:

> #!/bin/sh
> 
> # Interface connected to Internet
> INTERNET="eth1"
> 
> # Address connected to LAN
> LOCAL="10.0.1.0/24"
> 
> # OpenVPN
> OV="172.16.0.0/16"
> 
> # Clean old firewall
> iptables -F
> iptables -X
> iptables -t nat -F
> iptables -t nat -X
> iptables -t mangle -F
> iptables -t mangle -X
> 
> # Load IPTABLES modules for NAT and IP conntrack support
> modprobe ip_conntrack
> modprobe ip_conntrack_ftp
> 
> # Enable Forwarding
> echo 1 > /proc/sys/net/ipv4/ip_forward
> 
> # Enable Munin stats
> iptables -A INPUT -d PUBIP
> iptables -A OUTPUT -s PUBIP
> iptables -A FORWARD -i eth1
> 
> iptables -A INPUT -d 10.0.1.2
> iptables -A OUTPUT -s 10.0.1.2
> #iptables -A FORWARD -s 10.0.1.2
> iptables -A FORWARD -i eth0
> 
> # Setting default filter policy
> iptables -P INPUT DROP
> iptables -P OUTPUT ACCEPT
> 
> # Unlimited access to loop back
> iptables -A INPUT -i lo -j ACCEPT
> iptables -A OUTPUT -o lo -j ACCEPT
> 
> # Allow UDP, DNS and Passive FTP
> iptables -A INPUT -i $INTERNET -m state --state ESTABLISHED,RELATED -j ACCEPT
> 
> # Accept some inbound services
> # HTTP
> iptables -A INPUT -j ACCEPT -p tcp --destination-port 80 -i eth1
> 
> # SSH
> iptables -A INPUT -j ACCEPT -p tcp --destination-port 22 -i eth1
> 
> # Mediabox P2P
> iptables -A FORWARD -i $INTERNET -p tcp --dport 9500 -j ACCEPT
> iptables -t nat -A PREROUTING -p tcp -i $INTERNET --dport 9500 -j DNAT 
> --to-destination 10.0.1.11
> iptables -A FORWARD -i $INTERNET -p tcp --dport 8112 -j ACCEPT
> iptables -t nat -A PREROUTING -p tcp -i $INTERNET --dport 8112 -j DNAT 
> --to-destination 10.0.1.11
> 
> # block P2P
> #iptables -A FORWARD -m ipp2p --ipp2p -j DROP
> #iptables -A INPUT -m ipp2p --ipp2p -j DROP
> #iptables -A OUTPUT -m ipp2p --ipp2p -j DROP
> 
> # set this system as a router for Rest of LAN
> iptables -t nat -A POSTROUTING -o $INTERNET -j MASQUERADE
> iptables -A FORWARD -s $LOCAL -j ACCEPT
> 
> # unlimited access to LAN
> iptables -A INPUT -s $LOCAL -j ACCEPT
> iptables -A OUTPUT -s $LOCAL -j ACCEPT
> 
> # unlimited access to OPENVPN
> iptables -A INPUT -s $OV -j ACCEPT
> iptables -A OUTPUT -s $OV -j ACCEPT
> 
> # DROP everything and Log it
> #iptables -A INPUT -j LOG
> iptables -A INPUT -j DROP

Now I can get it to work only by commenting out the last line (iptables
-A INPUT -j DROP). But that defies the purpose of a firewall, doesn't
it?
What the heck happened this afternoon??

-RV


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RE: Filesystem recommendations

[Kevin Ross]

> From: Ron Johnson [mailto:ron.l.john...@cox.net]
> Sent: Saturday, April 24, 2010 3:49 PM
> 
> On 04/24/2010 05:31 PM, B. Alexander wrote:
> >
> > Define "hates sudden power outages"...Is it recoverable?
> >
> 
> They got pretty corrupted.  Maybe it's been robustified in the
> intervening years.

Apparently, it has been "robustified".

http://old.nabble.com/XFS-data-loss,-and-a-fix-td15876910.html

http://xfs.org/index.php/XFS_FAQ#Q:_Why_do_I_see_binary_NULLS_in_some_files_after_recovery_when_I_unplugged_the_power.3F




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Re: The modem-related questions: connection and enroll.

[John Hasler]

Sthu Deus writes:
> Can I use for connection through ppp something like this: pon isp
> /dev/ttyACM0 where isp is my /etc/ppp/peers/isp file, /dev/ttyACM0 -
> the modem device.

Not with pon.  I suggest that you write a script that calls pppd
directly.  Use the pon script as a starting point.

> So, how I can distinguish all the records in /var/log/pppd.log that
> belong to single user's connection? Please, any ideas.

I suggest that you look at pppstatus.
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Re: New monitor, how to change screen resolution?

[Redalert Commander]

On Thu, 2010-04-29 at 15:20 -0400, Stephen Powell wrote:
> On Thu, 29 Apr 2010 14:30:40 -0400 (EDT), James Stuckey wrote:

[snip]

> >
> > (1) I'm on AMD64/Asus motherboard P5Q
> > (2) NVIDIA 9800GT
> > (3) ASUS VH242H
> > (4) LCD
> > (5) Digital connection, not DVI
> 
> Digital connection, but not DVI?  Hmm.  This may be out of my league.  I don't
> have any experience with that.

HDMI perhaps?

[snip]

> >
> > (7)
> > ...
> > (++) using VT number 8
> 
> This is off topic, but did you notice that the X server initialized itself
> on VT number 8 instead of VT number 7?  That means, for example, that if
> you are on virtual console number 1 (text mode) and wish to switch to
> the X server, you will need to use Ctrl+Alt+F8 instead of the usual
> Ctrl+Alt+F7.  I've noticed this bug too lately.  In fact, it's
> possible that you have have two copies of the X server running.
> One on VT 7 and one on VT 8.  Wouldn't that be a hoot?

I noticed that on my system as well, and you might be correct, although
VT7 only gives you a black screen with blinking cursor.
You might be right about the 2 x servers:
ste...@pc-steven:~$ ps aux | grep gdm
root  2215  0.0  0.0  15372  1716 ?Ss   21:15
0:00 /usr/sbin/gdm
root  2220  0.0  0.1  15712  3248 ?S21:15
0:00 /usr/sbin/gdm
root  2229  2.3  2.1  77360 66380 tty7 Ss+  21:15
1:22 /usr/bin/X :0 -audit 0 -auth /var/lib/gdm/:0.Xauth -nolisten tcp
vt7
steven3880  0.0  0.0   3116   768 pts/0S+   22:14   0:00 grep
gdm

Might be a bug in the NVidia kernel module? Or is this something we can
fix in the X configuration? (it would be nice to have in on VT7 again as
default)

> > 
> > ...
> > (II) Apr 29 19:58:59 NVIDIA(0): Virtual screen size determined to be 1920 x
> > 1080
> 
> Is that the resolution you are trying to obtain: 1920x1080?  It's not a
> standard 4:3 aspect ratio, so it's most likely probed from the monitor.

It's probably a TV, I have one of these myself, quite nice for watching
films.

> > 
> > ...
> > (8) Squeeze with Sid nvidia drivers
> 
> -- 
>   .''`. Stephen Powell
>  : :'  :
>  `. `'`
>`-
> 
> 

James, about your resolution, have you tried nvidia-settings (needs to
be invoked as root in an x session, start a terminal session from the
menu, it's also listed in the System menu, but doesn't get invoked as
root). If you don't have that tool, you can get it from the
repositories.

Regards,
Steven



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Re: Making onscreen fonts read-able[was:New monitor, how to change screen resolution?]

[James Stuckey]

On Thu, Apr 29, 2010 at 10:15 PM, Camaleón  wrote:

> On Thu, 29 Apr 2010 22:06:08 +0200, James Stuckey wrote:
>
> > On Thu, Apr 29, 2010 at 10:03 PM, Camaleón wrote:
> >
> >> You could try running:
> >>
> >> xrandr --dpi 96
> >>
> >> Or if you have installed nvidia control panel application, IIRC you can
> >> also change it from there.
> >>
> > xrandr --dpi 96 or --dpi [any other value] doesn't change anything. I
> > don't see anything in nvidia-settings about DPI.
>
> Mmmm... how about specifying:
>
> Option   "DPI" "96 x 96"
>
> Under your /etc/X11/Xorg.conf "Monitor" section?
>
> (make a backup copy of the original file before making any change)
>
> Greetings,
>
> --
> Camaleón
>
>
> I can't tell if that made a change or not. In either case, the fonts still
look like garbage/aren't easy to read. I should note, the fonts in what I'm
typing right now (gmail) aren't bad -- it's the fonts on the menu bar in
iceweasel/icedove/whatever program.

Re: Making onscreen fonts read-able[was:New monitor, how to change screen resolution?]

[Camaleón]

On Thu, 29 Apr 2010 22:06:08 +0200, James Stuckey wrote:

> On Thu, Apr 29, 2010 at 10:03 PM, Camaleón wrote:
> 
>> You could try running:
>>
>> xrandr --dpi 96
>>
>> Or if you have installed nvidia control panel application, IIRC you can
>> also change it from there.
>>
> xrandr --dpi 96 or --dpi [any other value] doesn't change anything. I
> don't see anything in nvidia-settings about DPI.

Mmmm... how about specifying:

Option   "DPI" "96 x 96"

Under your /etc/X11/Xorg.conf "Monitor" section?

(make a backup copy of the original file before making any change)

Greetings,

-- 
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Re: Making onscreen fonts read-able[was:New monitor, how to change screen resolution?]

[James Stuckey]

On Thu, Apr 29, 2010 at 10:03 PM, Camaleón  wrote:

> On Thu, 29 Apr 2010 21:46:31 +0200, James Stuckey wrote:
>
> >> > I don't use gnome or KDE.
> >>
> >> And what DE (if any) are you using? :-)
> >>
> > I'm using wmii
>
> Uh... and how does one change DPI settings in that :-)?
>
> You could try running:
>
> xrandr --dpi 96
>
> Or if you have installed nvidia control panel application, IIRC you can
> also change it from there.
>
> Greetings,
>
> --
> Camaleón
>
>
xrandr --dpi 96 or --dpi [any other value] doesn't change anything. I don't
see anything in nvidia-settings about DPI.

Re: Making onscreen fonts read-able[was:New monitor, how to change screen resolution?]

[Camaleón]

On Thu, 29 Apr 2010 21:46:31 +0200, James Stuckey wrote:

>> > I don't use gnome or KDE.
>>
>> And what DE (if any) are you using? :-)
>>
> I'm using wmii

Uh... and how does one change DPI settings in that :-)?

You could try running:

xrandr --dpi 96

Or if you have installed nvidia control panel application, IIRC you can 
also change it from there.

Greetings,

-- 
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Re: [OT] Home UPS (was Filesystem recommendations)

[Merciadri Luca]

Boyd Stephen Smith Jr. wrote:
> It's not because the printer makes the power unclean or otherwise interferes 
> with the correct functioning of the UPS while mains is working.  They 
> recommend against connecting printers because printers draw a large amount of 
> power, dramatically reducing the time the UPS can maintain power to the 
> system 
> if the mains fails.
Correct.
>   Also, (1) I've never actually needed my printer during an 
> outage
Generally, people don't. Only the minimum minimorum (strict minimum)
needs to be connected to the UPS' electrical outlets. Mine has two rows
of electrical outlets: one which is `only' secured, and the other which
is connected to the battery. The best idea is to not succumb to the
tentation of plugging every possible electrical device into the
battery-connected electrical outlets. But reasonable thoughts need to be
taken into account in this case. I saw people having the screen plugged
in the battery, but the main unit being plugged into the not-battery
row. This is complete nonsense, and a total lack of commonsense.
> and (2) printers generally don't suffer the same ill effects from 
> sudden power loss that file systems do.
>   
Sure. But scanners do.

-- 
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Re: [OT] Home UPS (was Filesystem recommendations)

[Camaleón]

On Thu, 29 Apr 2010 14:48:03 -0500, Boyd Stephen Smith Jr. wrote:

> On Thursday 29 April 2010 14:26:17 owens wrote:

>> Also I might have an issue with Stan's use of AND.  While surge
>> protection of printers is a good idea, most UPS vendors advise against
>> connecting the printer to the UPS for power protection
> 
> It's not because the printer makes the power unclean or otherwise
> interferes with the correct functioning of the UPS while mains is
> working.  They recommend against connecting printers because printers
> draw a large amount of power, dramatically reducing the time the UPS can
> maintain power to the system if the mains fails.  Also, (1) I've never
> actually needed my printer during an outage and (2) printers generally
> don't suffer the same ill effects from sudden power loss that file
> systems do.

He, he, he... Agree.

Someone tried to attach a mid-size laser printer to a UPS? (please, do 
not)>:-)

I remember the days when I (innocently) "did so" and as soon as the 
printer was powered on, the UPS unit (APC Smart 1000VA) was inmediatly 
shutdown... and also all of the devices attached to it (the printer 
loaded more power than the UPS could hold).

Greetings,

-- 
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Re: Making onscreen fonts read-able[was:New monitor, how to change screen resolution?]

[James Stuckey]

On Thu, Apr 29, 2010 at 9:45 PM, Camaleón  wrote:

> On Thu, 29 Apr 2010 21:40:46 +0200, James Stuckey wrote:
>
> > On Thu, Apr 29, 2010 at 9:39 PM, Camaleón  wrote:
> >
> >> That is probably due to a low DPI value. You can change it to whatever
> >> value you feel more confortable with.
>
> > I don't use gnome or KDE.
>
> And what DE (if any) are you using? :-)
>
> Greetings,
>
> --
> Camaleón
>
>
> --
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> with a subject of "unsubscribe". Trouble? Contact
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>
>
I'm using wmii

Re: Making onscreen fonts read-able[was:New monitor, how to change screen resolution?]

[Camaleón]

On Thu, 29 Apr 2010 21:40:46 +0200, James Stuckey wrote:

> On Thu, Apr 29, 2010 at 9:39 PM, Camaleón  wrote:
> 
>> That is probably due to a low DPI value. You can change it to whatever
>> value you feel more confortable with.

> I don't use gnome or KDE.

And what DE (if any) are you using? :-)

Greetings,

-- 
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Re: [OT] Home UPS (was Filesystem recommendations)

[Boyd Stephen Smith Jr.]

On Thursday 29 April 2010 14:26:17 ow...@netptc.net wrote:
> > Original Message 
> >From: zlinux...@wowway.com
> >To: debian-user@lists.debian.org
> >Subject: RE: [OT] Home UPS (was  Filesystem recommendations)
> >Date: Thu, 29 Apr 2010 11:54:47 -0400 (EDT)
> >>On Thu, 29 Apr 2010 11:26:52 -0400 (EDT), Stan Hoeppner wrote:
> >>> Is it worth spending $100 to
> >>> power backup protect my $1000 PC and printer?
> 
> Also I might have an issue with Stan's use of AND.  While surge
> protection of printers is a good idea, most UPS vendors advise
> against connecting the printer to the UPS for power protection

It's not because the printer makes the power unclean or otherwise interferes 
with the correct functioning of the UPS while mains is working.  They 
recommend against connecting printers because printers draw a large amount of 
power, dramatically reducing the time the UPS can maintain power to the system 
if the mains fails.  Also, (1) I've never actually needed my printer during an 
outage and (2) printers generally don't suffer the same ill effects from 
sudden power loss that file systems do.
-- 
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b...@iguanasuicide.net  ((_/)o o(\_))
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Re: [OT] Home UPS (was Filesystem recommendations)

[Merciadri Luca]

ow...@netptc.net wrote:
>>
>>  Original Message 
>> From: zlinux...@wowway.com
>> To: debian-user@lists.debian.org
>> Subject: RE: [OT] Home UPS (was  Filesystem recommendations)
>> Date: Thu, 29 Apr 2010 11:54:47 -0400 (EDT)
>>
>> 
>>> On Thu, 29 Apr 2010 11:26:52 -0400 (EDT), Stan Hoeppner wrote:
>>>   
 Anyway, the way I've always looked at the residential side of the
 
>> UPS debate
>> 
 is to ask myself this question:  Is it worth spending $100 to
 
>> surge and
>> 
 power backup protect my $1000 PC and printer?  For me that answer
 
>> is an
>> 
 emphatic yes.
 
Same point of view here. Once upon a time, I had some pretty expensive
computer hardware, and an overvoltage botched the motherboard and the
CPU. I had no UPS. I have an UPS for 3 or 4 years now, and everything is
pretty fine. Even if thunder sounds, I stay in front of the computer
without any harm to the hardware. But it has a cost. Everything is a
compromise. If your hardware is cheap, and that it is quite unlikely to
thunder around your house, I would suggest you not to buy an UPS,
especially if your revenues are low-income. If, on the other hand, your
hardware is expensive ([inclusive] or that you have low-income
revenues), you'd better buy an UPS. It really worths it.

But there is not only the thunder. Here, in Belgium, it sometimes
happens to have power outages, without any information before.
Consequently, if you have no UPS, everything is directly powered off,
and it is not an interesting thing for both your hardware and what you
are currently working on. With the other computer which gave up the
gost, I also lost some part of a report I was working for. No doubt I
was angry.

-- 
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Re: Making onscreen fonts read-able[was:New monitor, how to change screen resolution?]

[James Stuckey]

On Thu, Apr 29, 2010 at 9:39 PM, Camaleón  wrote:

> On Thu, 29 Apr 2010 21:27:59 +0200, James Stuckey wrote:
>
> (...)
>
> > I don't recall how the config file was made. The resolution I want is
> > 1920x1080. Restarting X gave me this resolution. Now my fonts on screen
> > (like on the menu bar in iceweasel/icedove, for example) aren't too easy
> > to read. They just don't look right. How do I fix that?
>
> That is probably due to a low DPI value. You can change it to whatever
> value you feel more confortable with.
>
> DPI value can be modified in GNOME under "fonts settings / details" and
> in KDE there should be a similar way under its control center / fonts.
>
> A value of "96 dpi" should render fonts just fine.
>
> Greetings,
>
> --
> Camaleón
>
>
> --
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>
>
I don't use gnome or KDE.

Re: Filesystem recommendations

[Boyd Stephen Smith Jr.]

On Thursday 29 April 2010 14:17:28 Joe Brenner wrote:
> Ron Johnson  wrote:
> > B. Alexander wrote:
> > > Ron Johnson  wrote:
> > >> XFS is the canonical fs for when you have lots of Big Files.  I've
> > >> also seen simple benchmarks on this list showing that it's faster
> > >> than ext3/ext4.
> > >
> > > Thats cool. What about Lots of Little Files? That was another of the
> > > draws of reiser3.
> >
> > That same unofficial benchmark showed surprising small-file speed by
> > xfs.
> 
> Would you happen to have any links to such benchmarks, unofficial or
> otherwise?
> 
> My experience has been that whenever I look at filesystem benchmarks,
> they skip the many-small-files case.  I've always had the feeling that
> most of the big filesystems cared a lot about scaling up in file-size,
> but not too much about anything else.

NB: This is my best recollection; I'm not looking this up right now.  Please 
check my facts, I'd love to know if I'm wrong.

Some of that reiserfs performance came from directories-as-hash-tables, which 
I believe ext3/4 supports and is native for btrfs.  Some of that also came 
from tail-packing, which could come from the extents feature of ext4 and 
should be in btrfs.  The final edge reiserfs had was above-average 
flushing/caching algorithms, and the development pushes in ext4 and btrfs have 
likely reduced or eliminated that; I think the unified block-device caching 
system in the kernel able helped make that not such a big deal.

> I'm a Reiser3 user myself, and I've never had any problems with it.
> 
> (The trouble with it being "long in the tooth" is mostly hypothetical,
> isn't it?)

Not really.  Reiserfs will probably be maintained in the kernel for a very 
long time, in that as any interfaces it uses are updated it will be updated to 
use the new interface.  However, ISTR there are open bugs on reiserfs that 
will not be fixed.  Similarly, I expect new bugs that can be blamed on the 
reiserfs code are less likely to be fixed than bugs than can be blamed on the 
ext2/3/4 or xfs code.

In addition, as file system technology advances, reiserfs will become less 
attractive for new installs and it will become more attractive to migrate away 
from it.  Unfortunately, migration tools are unlikely to be developed, outside 
of generic file system migration tools.  Compare with btrfs_convert which 
allows an ext2/3 file system to be converted to btrfs with no data copying; 
such tools have to be aware of the internal structure of the file system and 
fewer and fewer developers will even HAVE that knowledge of reiserfs.  The 
source will be available, sure, but even kernel maintainers interested in file 
systems are not interested in reiserfs.

There's no drop-dead date for reiserfs in the kernel (AFAIK), so there's no 
pressing need to migrate away from it, but there is a lot of work on file 
systems that should both perform better and be supported better than reiserfs.
-- 
Boyd Stephen Smith Jr.   ,= ,-_-. =.
b...@iguanasuicide.net  ((_/)o o(\_))
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Re: Making onscreen fonts read-able[was:New monitor, how to change screen resolution?]

[Camaleón]

On Thu, 29 Apr 2010 21:27:59 +0200, James Stuckey wrote:

(...)

> I don't recall how the config file was made. The resolution I want is
> 1920x1080. Restarting X gave me this resolution. Now my fonts on screen
> (like on the menu bar in iceweasel/icedove, for example) aren't too easy
> to read. They just don't look right. How do I fix that?

That is probably due to a low DPI value. You can change it to whatever 
value you feel more confortable with.

DPI value can be modified in GNOME under "fonts settings / details" and 
in KDE there should be a similar way under its control center / fonts.

A value of "96 dpi" should render fonts just fine.

Greetings,

-- 
Camaleón


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RE: [OT] Home UPS (was Filesystem recommendations)

[owens]

>
>
>
> Original Message 
>From: zlinux...@wowway.com
>To: debian-user@lists.debian.org
>Subject: RE: [OT] Home UPS (was  Filesystem recommendations)
>Date: Thu, 29 Apr 2010 11:54:47 -0400 (EDT)
>
>>On Thu, 29 Apr 2010 11:26:52 -0400 (EDT), Stan Hoeppner wrote:
>>> 
>>> Anyway, the way I've always looked at the residential side of the
>UPS debate
>>> is to ask myself this question:  Is it worth spending $100 to
>surge and
>>> power backup protect my $1000 PC and printer?  For me that answer
>is an
>>> emphatic yes.
>>
>>You make a strong case.  But I come from a different perspective
>than
>>you do.  I don't have any new hardware at home.  The only piece of
>>equipment I bought new was a 4-port Ethernet router which cost me
>about
>>$20, I think.  Almost everything else was either given away or
>thrown
>>away or sold used for a low price.  The most expensive computer I
>own
>>cost me somewhere around $300, I think.  I bought it used 2 years
>ago,
>>and it's market value today is probably around $150-200.  All my
>monitors
>>(with the exception of those built-in to laptops) are thrown-away
>CRTs.
>>In other words, my home hardware collection consists almost
>exclusively
>>of dumpster-diver specials.  How much money am I willing to spend to
>>protect my hardware?  Probably not as much as you are.  Still, it
>would
>>be nice to have.  Maybe I'll put it on my Christmas list.  :-)
>>
>>Oh, wait.  I did buy my powered speakers new -- about 15 years
>>ago.  ;-)
>>
>>-- 
>>  .''`. Stephen Powell
>> : :'  :
>> `. `'`
>>   `-
>>
Also I might have an issue with Stan's use of AND.  While surge
protection of printers is a good idea, most UPS vendors advise
against connecting the printer to the UPS for power protection
Larry
>>
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>ail.r...@md01.wow.synacor.com
>>
>>



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Making onscreen fonts read-able[was:New monitor, how to change screen resolution?]

[James Stuckey]

On Thu, Apr 29, 2010 at 9:20 PM, Stephen Powell wrote:

> On Thu, 29 Apr 2010 14:30:40 -0400 (EDT), James Stuckey wrote:
> > Stephen Powell wrote:
> >> You didn't provide much information, James.  I'm afraid that there's no
> >> "one size fits all" answer to that question.  It depends on a lot of
> >> things.
> >> Please provide the following information:
> >>
> >> (1) The make and model of your computer
> >> (2) The make and model of your video card
> >> (3) The make and model of your monitor
> >> (4) The type of monitor (CRT, LCD, etc.)
> >> (5) The type of video connection used (digital, analog, etc.)
> >> (6) The contents of /etc/X11/xorg.conf, if it exists
> >> (7) The contents of /var/log/Xorg.0.log
> >> (8) Which release of Debian you are running (Lenny, Squeeze, Sid, etc)
> >
> > (1) I'm on AMD64/Asus motherboard P5Q
> > (2) NVIDIA 9800GT
> > (3) ASUS VH242H
> > (4) LCD
> > (5) Digital connection, not DVI
>
> Digital connection, but not DVI?  Hmm.  This may be out of my league.  I
> don't
> have any experience with that.
>
> > (6)
> > Section "ServerLayout"
> > Identifier "X.org Configured"
> > Screen  0  "Screen0" 0 0
> > InputDevice"Mouse0" "CorePointer"
> > InputDevice"Keyboard0" "CoreKeyboard"
> > EndSection
> >
> > Section "Files"
> > ModulePath   "/usr/lib/xorg/modules"
> > FontPath "/usr/share/fonts/X11/misc"
> > FontPath "/usr/share/fonts/X11/cyrillic"
> > FontPath "/usr/share/fonts/X11/100dpi/:unscaled"
> > FontPath "/usr/share/fonts/X11/75dpi/:unscaled"
> > FontPath "/usr/share/fonts/X11/Type1"
> > FontPath "/usr/share/fonts/X11/100dpi"
> > FontPath "/usr/share/fonts/X11/75dpi"
> > FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
> > FontPath "built-ins"
> > EndSection
> >
> > Section "Module"
> > Load  "record"
> > Load  "extmod"
> > Load  "glx"
> > Load  "dri"
> > Load  "dbe"
> > Load  "dri2"
> > EndSection
> >
> > Section "InputDevice"
> > Identifier  "Keyboard0"
> > Driver  "kbd"
> > EndSection
> >
> > Section "InputDevice"
> > Identifier  "Mouse0"
> > Driver  "mouse"
> > Option"Protocol" "auto"
> > Option"Device" "/dev/input/mice"
> > Option"ZAxisMapping" "4 5 6 7"
> > EndSection
> >
> > Section "Monitor"
> > Identifier   "Monitor0"
> > VendorName   "Monitor Vendor"
> > ModelName"Monitor Model"
> > EndSection
> >
> > Section "Device"
> > ### Available Driver options are:-
> > ### Values: : integer, : float, : "True"/"False",
> > ### : "String", : " Hz/kHz/MHz"
> > ### [arg]: arg optional
> > #Option "SWcursor"   # []
> > #Option "HWcursor"   # []
> > #Option "NoAccel"# []
> > #Option "ShadowFB"   # []
> > #Option "UseFBDev"   # []
> > #Option "Rotate" # []
> > #Option "VideoKey"   # 
> > #Option "FlatPanel"  # []
> > #Option "FPDither"   # []
> > #Option "CrtcNumber" # 
> > #Option "FPScale"# []
> > #Option "FPTweak"# 
> > #Option "DualHead"   # []
> > Identifier  "Card0"
> > Driver  "nvidia"
> > VendorName  "nVidia Corporation"
> > BoardName   "G92 [GeForce 9800 GT]"
> > BusID   "PCI:1:0:0"
> > EndSection
> >
> > Section "Screen"
> > Identifier "Screen0"
> > Device "Card0"
> > Monitor"Monitor0"
> > SubSection "Display"
> > Viewport   0 0
> > Depth 1
> > EndSubSection
> > SubSection "Display"
> > Viewport   0 0
> > Depth 4
> > EndSubSection
> > SubSection "Display"
> > Viewport   0 0
> > Depth 8
> > EndSubSection
> > SubSection "Display"
> > Viewport   0 0
> > Depth 15
> > EndSubSection
> > SubSection "Display"
> > Viewport   0 0
> > Depth 16
> > EndSubSection
> > SubSection "Display"
> > Viewport   0 0
> > Depth 24
> > EndSubSection
> > EndSection
>
> It's the proprietary nvidia driver!  Oh no!  ;-)
>
> My first question is, how did you come up with this config file?
> Did you create it yourself by hand?  Did you run a script to create it?
> Did the proprietary nvidia driver installation program create it for you?
> It seems way over-specified to me.
> >
> > (7)
> > ...
> > (++) using VT number 8
>
> This is off topic, but did you notice that the X server initialized itself
> on VT number 8 instead of VT number 7?  That means, for example, that if
> you are on virtual console number 1 (text mode) and wish to switch to
> the X server, you will need to use Ctrl+Alt+F8 instead of the usual
> Ctrl+Alt+F7.  

Re: New monitor, how to change screen resolution?

[Stephen Powell]

On Thu, 29 Apr 2010 14:30:40 -0400 (EDT), James Stuckey wrote:
> Stephen Powell wrote:
>> You didn't provide much information, James.  I'm afraid that there's no
>> "one size fits all" answer to that question.  It depends on a lot of
>> things.
>> Please provide the following information:
>>
>> (1) The make and model of your computer
>> (2) The make and model of your video card
>> (3) The make and model of your monitor
>> (4) The type of monitor (CRT, LCD, etc.)
>> (5) The type of video connection used (digital, analog, etc.)
>> (6) The contents of /etc/X11/xorg.conf, if it exists
>> (7) The contents of /var/log/Xorg.0.log
>> (8) Which release of Debian you are running (Lenny, Squeeze, Sid, etc)
>
> (1) I'm on AMD64/Asus motherboard P5Q
> (2) NVIDIA 9800GT
> (3) ASUS VH242H
> (4) LCD
> (5) Digital connection, not DVI

Digital connection, but not DVI?  Hmm.  This may be out of my league.  I don't
have any experience with that.

> (6)
> Section "ServerLayout"
> Identifier "X.org Configured"
> Screen  0  "Screen0" 0 0
> InputDevice"Mouse0" "CorePointer"
> InputDevice"Keyboard0" "CoreKeyboard"
> EndSection
> 
> Section "Files"
> ModulePath   "/usr/lib/xorg/modules"
> FontPath "/usr/share/fonts/X11/misc"
> FontPath "/usr/share/fonts/X11/cyrillic"
> FontPath "/usr/share/fonts/X11/100dpi/:unscaled"
> FontPath "/usr/share/fonts/X11/75dpi/:unscaled"
> FontPath "/usr/share/fonts/X11/Type1"
> FontPath "/usr/share/fonts/X11/100dpi"
> FontPath "/usr/share/fonts/X11/75dpi"
> FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
> FontPath "built-ins"
> EndSection
> 
> Section "Module"
> Load  "record"
> Load  "extmod"
> Load  "glx"
> Load  "dri"
> Load  "dbe"
> Load  "dri2"
> EndSection
> 
> Section "InputDevice"
> Identifier  "Keyboard0"
> Driver  "kbd"
> EndSection
> 
> Section "InputDevice"
> Identifier  "Mouse0"
> Driver  "mouse"
> Option"Protocol" "auto"
> Option"Device" "/dev/input/mice"
> Option"ZAxisMapping" "4 5 6 7"
> EndSection
> 
> Section "Monitor"
> Identifier   "Monitor0"
> VendorName   "Monitor Vendor"
> ModelName"Monitor Model"
> EndSection
> 
> Section "Device"
> ### Available Driver options are:-
> ### Values: : integer, : float, : "True"/"False",
> ### : "String", : " Hz/kHz/MHz"
> ### [arg]: arg optional
> #Option "SWcursor"   # []
> #Option "HWcursor"   # []
> #Option "NoAccel"# []
> #Option "ShadowFB"   # []
> #Option "UseFBDev"   # []
> #Option "Rotate" # []
> #Option "VideoKey"   # 
> #Option "FlatPanel"  # []
> #Option "FPDither"   # []
> #Option "CrtcNumber" # 
> #Option "FPScale"# []
> #Option "FPTweak"# 
> #Option "DualHead"   # []
> Identifier  "Card0"
> Driver  "nvidia"
> VendorName  "nVidia Corporation"
> BoardName   "G92 [GeForce 9800 GT]"
> BusID   "PCI:1:0:0"
> EndSection
> 
> Section "Screen"
> Identifier "Screen0"
> Device "Card0"
> Monitor"Monitor0"
> SubSection "Display"
> Viewport   0 0
> Depth 1
> EndSubSection
> SubSection "Display"
> Viewport   0 0
> Depth 4
> EndSubSection
> SubSection "Display"
> Viewport   0 0
> Depth 8
> EndSubSection
> SubSection "Display"
> Viewport   0 0
> Depth 15
> EndSubSection
> SubSection "Display"
> Viewport   0 0
> Depth 16
> EndSubSection
> SubSection "Display"
> Viewport   0 0
> Depth 24
> EndSubSection
> EndSection

It's the proprietary nvidia driver!  Oh no!  ;-)

My first question is, how did you come up with this config file?
Did you create it yourself by hand?  Did you run a script to create it?
Did the proprietary nvidia driver installation program create it for you?
It seems way over-specified to me.
>
> (7)
> ...
> (++) using VT number 8

This is off topic, but did you notice that the X server initialized itself
on VT number 8 instead of VT number 7?  That means, for example, that if
you are on virtual console number 1 (text mode) and wish to switch to
the X server, you will need to use Ctrl+Alt+F8 instead of the usual
Ctrl+Alt+F7.  I've noticed this bug too lately.  In fact, it's
possible that you have have two copies of the X server running.
One on VT 7 and one on VT 8.  Wouldn't that be a hoot?
> 
> ...
> (II) Apr 29 19:58:59 NVIDIA(0): Virtual screen size determined to be 1920 x
> 1080

Is that the resolution you are trying to obtain: 1920x1080?  It's not a
s

Re: Filesystem recommendations

[Joe Brenner]

Ron Johnson  wrote:
> B. Alexander wrote:
> > Ron Johnson  wrote:

> [snip]

> >> XFS is the canonical fs for when you have lots of Big Files.  I've
> >> also seen simple benchmarks on this list showing that it's faster
> >> than ext3/ext4.

> > Thats cool. What about Lots of Little Files? That was another of the draws
> > of reiser3. I have a space I mount on /media/archive, which has everything
> > from mp3/oggs and movies, to books to a bunch of tiny files. This will
> > probably be the first victim for the xfs test partition.
>
> That same unofficial benchmark showed surprising small-file speed by
> xfs.

Would you happen to have any links to such benchmarks, unofficial or
otherwise?

My experience has been that whenever I look at filesystem benchmarks,
they skip the many-small-files case.  I've always had the feeling that
most of the big filesystems cared a lot about scaling up in file-size,
but not too much about anything else.

I'm a Reiser3 user myself, and I've never had any problems with it.

(The trouble with it being "long in the tooth" is mostly hypothetical,
isn't it?)


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RE: Filesystem recommendations

[Kevin Ross]

> From: Boyd Stephen Smith Jr. [mailto:b...@iguanasuicide.net]
> Sent: Thursday, April 29, 2010 7:20 AM
> 
> Both XFS and Ext3/4 recover through journal replay, and it is usually
> enough. Rarely, a manual filesystem check will be required, and xfs_check
> is usually much faster than fsck.ext3 or even fsck.ext4.

They only journal filesystem metadata, not the file data iself.  If changes
to a file haven't been flushed to disk before the power goes out, you'll end
up with a perfectly consistent filesystem (thanks to the journal), but with
a file or two (or more) with garbage in it.  This is why at the beginning of
this thread I recommended a filesystem that uses copy-on-write and
preferably checksums your data.

However, I don't follow my own advice, probably because I've been using XFS
for so long (since 2.4 kernel when you had to download the patches from
SGI).

I personally haven't had a problem with data loss from power outage as a
result of XFS corrupting my files.  I believe this is because if a regular
file (not a database) is in the process of being written when the power goes
out, even if every write is synced to disk, unless whatever was writing to
it has finished writing, then the contents of the file are invalid anyway,
and no filesystem will protect you from that.  For example, if my MythTV
backend is recording a TV show and the power goes out in the middle of the
recording, I will delete it and let MythTV re-record at a later date.  It
makes no difference if every byte in that file is correct or not up to the
point of the power failure.

The window of failure is when the process doing the writing closes the file,
and if the power now goes out before everything is synced to disk, then you
will have a corrupted file that otherwise wouldn't have been.

BTW, regarding UPS's.  The number of times my computer was improperly shut
down as a result of a power outage is far less than the number of times
other problems have caused improper shutdowns: e.g. hardware failures such
as a power supply going bad, system overheating, kernel crashes, or other
system lockups that require you to hit the reset button.


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Re: [Solved] Re: Ctrl+alt+Fn not showing consoles

[Hugo Vanwoerkom]

rudupere wrote:

Le 29/04/2010 05:55, Justin The Cynical a écrit :


rudu wrote:


In single user mode, I can login on the first virtual console but
every other ctrl+alt+Fn I hit only gives me a black screen with a
prompt flashing in the upper left corner ...


IIRC, in single user mode, this is normal.



Launching a graphic session with startx instead of gdm/kdm doesn't
change anything except that I don't even have any flashing prompt on
my black screen anymore.



This is an old, old bug (IMO) in the binary nvidia module. I've had this
problem since getting Linux running on my old pentium m laptop with a
6000 go series chip.

For example:

http://www.nvnews.net/vbulletin/showthread.php?t=131639

and possible fix (seems to be hit or miss):
http://www.nvnews.net/vbulletin/showthread.php?t=120492




Bingo !!
That was it, an old bug from nvidia drivers.
The workaround that worked for me :
Append the line :
options nvidia NVreg_UseVBios=0
to the file /etc/modprobe.d/nvidia-kernel-nkc.conf

A big thank you to Justin and everyone who helped.


Good that you got it solved. Except I don't understand when the problem 
started. You must have run at one time w/o black screens. And then they 
started.


Hugo









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Re: Filesystem recommendations

[thib]

Rob Owens wrote:

The resilience is due to the way the journal is written, if I
understand correctly.  Maybe somebody on this list who understands it
better can confirm or deny.  There is a journal_data_writeback option
for ext3 which will speed up writes to the filesystem, but reduce its
resilience to power loss.  With this option enabled, I recall reading
that the ext3 benchmarks are pretty similar to XFS.


Yep.  As always, LWN probably has the best word on it [1].

Short answer:  ext3 is outdated, ext4 is current and can still be configured 
to get the same "better data resilience" without losing all its benefits. 
XFS should also be able to do so.  Criticising ext4 for data resilience 
"problems" and praising XFS is a fallacy, both go in the same direction.


Now the debate is around the default configuration of modern filesystems 
(basically performance vs safety).  As YMMVVM (very much), one should 
probably just ignore the debate, take 30m to learn about the issue, and 
configure his filesystem properly.


Well, opinions.  ;-)

For stable users using ext3, writeback can theoretically offer better 
throughput, as it doesn't force data to be be pushed on the platters before 
the metadata has been committed to the journal.  It still keeps the 
filesystem consistent (the only thing a journal is supposed to do), but the 
risk of corrupting the data is greater.  I, personally, don't seek to 
minimize that risk, I want it to be zero -- no filesystem can help here, and 
no filesystem will ever do.  That's one reason why I don't like to see ext3 
recommended for its data resilience:  it gives the user the illusion of safety.


Of course, it still makes sense to minimize the risk in certain scenarios 
where it can't be eliminated;  but again, modern filesystems can be 
configured to do so.


-thib

[1] http://lwn.net/Articles/322823/


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Samba BDC con LDAP PAM/NSS

[cosme]

Samba BDC con LDAP PAM/NSS

Hola

He buscado pero en definitiva nada claro y es que necesito implementar un 
Backup Domain Controler para Debian Lenny.


Tengo la idea para la parte de el smb.conf de Samba, pero

cómo configuro LDAP, PAM y NSS???

He estado haciendo pruebas pero no he dado con la verdad

Algúna idea, ayuda, etc?



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Re: Creating a debian local mirror from 5 debian DVDs

[Celejar]

On Thu, 29 Apr 2010 19:49:52 +0530
"L.Guruprasad"  wrote:

> Hi,
> 
> > Take a look at "apt-cacher" instead of a full mirror, see whether it
> > could help you.
> > http://www.debuntu.org/how-to-set-up-a-repository-cache-with-apt-cacher
> 
> >> Or approx - I use it and like it very much.
> 
> The problem is that these tools involve one time download and I don't
> want to make even that as I have all the debian 504 dvds with me. I
> can't even do that one time download.

Actually, approx comes with a tool to import debs into its cache: approx
import.  You just point it at some deb files and voila!  No downloading
needed.

> Btw, how do I turn off the digest mode and subscribe to the regular one
> mail per mail to the list mode?

Just unsubscribe, and resubscribe for the non-digest version.

Celejar
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Re: New monitor, how to change screen resolution?

[James Stuckey]

> You didn't provide much information, James.  I'm afraid that there's no
> "one size fits all" answer to that question.  It depends on a lot of
> things.
> Please provide the following information:
>
> (1) The make and model of your computer
> (2) The make and model of your video card
> (3) The make and model of your monitor
> (4) The type of monitor (CRT, LCD, etc.)
> (5) The type of video connection used (digital, analog, etc.)
> (6) The contents of /etc/X11/xorg.conf, if it exists
> (7) The contents of /var/log/Xorg.0.log
> (8) Which release of Debian you are running (Lenny, Squeeze, Sid, etc)
>
>
Hi Stephen,

(1) I'm on AMD64/Asus motherboard P5Q
(2) NVIDIA 9800GT
(3) ASUS VH242H
(4) LCD
(5) Digital connection, not DVI

(6)
Section "ServerLayout"
Identifier "X.org Configured"
Screen  0  "Screen0" 0 0
InputDevice"Mouse0" "CorePointer"
InputDevice"Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
ModulePath   "/usr/lib/xorg/modules"
FontPath "/usr/share/fonts/X11/misc"
FontPath "/usr/share/fonts/X11/cyrillic"
FontPath "/usr/share/fonts/X11/100dpi/:unscaled"
FontPath "/usr/share/fonts/X11/75dpi/:unscaled"
FontPath "/usr/share/fonts/X11/Type1"
FontPath "/usr/share/fonts/X11/100dpi"
FontPath "/usr/share/fonts/X11/75dpi"
FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
FontPath "built-ins"
EndSection

Section "Module"
Load  "record"
Load  "extmod"
Load  "glx"
Load  "dri"
Load  "dbe"
Load  "dri2"
EndSection

Section "InputDevice"
Identifier  "Keyboard0"
Driver  "kbd"
EndSection

Section "InputDevice"
Identifier  "Mouse0"
Driver  "mouse"
Option"Protocol" "auto"
Option"Device" "/dev/input/mice"
Option"ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
Identifier   "Monitor0"
VendorName   "Monitor Vendor"
ModelName"Monitor Model"
EndSection

Section "Device"
### Available Driver options are:-
### Values: : integer, : float, : "True"/"False",
### : "String", : " Hz/kHz/MHz"
### [arg]: arg optional
#Option "SWcursor"   # []
#Option "HWcursor"   # []
#Option "NoAccel"# []
#Option "ShadowFB"   # []
#Option "UseFBDev"   # []
#Option "Rotate" # []
#Option "VideoKey"   # 
#Option "FlatPanel"  # []
#Option "FPDither"   # []
#Option "CrtcNumber" # 
#Option "FPScale"# []
#Option "FPTweak"# 
#Option "DualHead"   # []
Identifier  "Card0"
Driver  "nvidia"
VendorName  "nVidia Corporation"
BoardName   "G92 [GeForce 9800 GT]"
BusID   "PCI:1:0:0"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor"Monitor0"
SubSection "Display"
Viewport   0 0
Depth 1
EndSubSection
SubSection "Display"
Viewport   0 0
Depth 4
EndSubSection
SubSection "Display"
Viewport   0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport   0 0
Depth 15
EndSubSection
SubSection "Display"
Viewport   0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport   0 0
Depth 24
EndSubSection
EndSection

(7)
X.Org X Server 1.7.6
Release Date: 2010-03-17
X Protocol Version 11, Revision 0
Build Operating System: Linux 2.6.32-4-amd64 x86_64 Debian
Current Operating System: Linux debian 2.6.32-3-amd64 #1 SMP Wed Feb 24
18:07:42 UTC 2010 x86_64
Kernel command line: BOOT_IMAGE=/boot/vmlinuz-2.6.32-3-amd64
root=UUID=cca7add1-981f-469f-9285-ae17722e24bd ro quiet
Build Date: 05 April 2010  02:21:15PM
xorg-server 2:1.7.6-2 (Timo Aaltonen )
Current version of pixman: 0.16.4
Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Thu Apr 29 19:58:58 2010
(==) Using config file: "/etc/X11/xorg.conf"
(==) ServerLayout "X.org Configured"
(**) |-->Screen "Screen0" (0)
(**) |   |-->Monitor "Monitor0"
(**) |   |-->Device "Card0"
(**) |-->Input Device "Mouse0"
(**) |-->Input Device "Keyboard0"
(==) Automatically adding devices
(==) Automatically enabling devices
(WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
Entry deleted from font path.
(WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
Entry deleted from font path.
(**) FontPath set to:
/usr/share/f

Re: [OT] Home UPS (was Filesystem recommendations)

[Stan Hoeppner]

Kelly Clowers put forth on 4/29/2010 12:07 PM:

> Furthermore most almost all power outages here are very brief,
> and I end up not having to shutdown at all, which is just pure
> convenience. For me, my Back-UPS XS 1000 was one of my
> best computer-related purchases.

I've got an old APC RM1400NET in the bottom of my home rack backing just one
server at the moment, a rarely used CRT, and my comms gear.  I get about an
hour out of it during a total outage.  I bought it used from a local "off
lease equipment" reseller/liquidator.  Gave just over $100 USD for it.  The
battery pack lasted 6 months.  Bought a replacement pack from batteries.com
for a little over $100 with shipping.  I've got over 4 years on the current
battery pack.  Average lifespan on the 1400 pack is 5-7 years depending on
the number and duration of inverter cycles.  As with you, this is one of the
smartest hardware purchases I ever made.  The electronics and electrical
parts in UPSes very rarely fail, so as long as you replace batteries every 5
years or so you'd got reliable power backup, and cheap--$20 per year
basically for batteries.  This level of power (and piece of mind) protection
costs less per year than one trip to the movie theater to see Avatar.

I've got an equally old MinuteMan 650 floor model backing my home
workstation.  Again I purchased this one used from a liquidator (different
one in this case) for around $40 back in 1998.  I've replaced the battery
once after 6 years and am about ready to replace it again.  The battery for
this one runs around $40.

Today you can buy a 700kva class consumer UPS for $100.  If the battery
lasts you 5 years, you've paid $20/year for power/surge and data protection.
 Not to mention convenience.

I can't imagine ever going without a UPS, whether server or workstation.
Laptops are great because, for all practical purposes, you get a free UPS
built in.

-- 
Stan


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Re: [TexLive] This math formula work a few month a go, but nowadays it didn't work anymore

[Johan Grönqvist]

2010-04-29 19:40, Norbert Zeh skrev:


You are missing the font file
fmex8.pfb.  If I search for it using apt-file, apt-file claims that this
file is part of texlive-base.  I have this package installed, but the
whole directory where this file is supposed to live does not exist.
Something wrong with the texlive-base package?



Perhaps it exists in lenny but not in squeeze? My apt-file search also 
says that it exists, but I do not even have the directory in which the 
file is supposed to reside.


According to the debian site, however, the file is not available in squeeze:





It seems to come from a cmex package. Can that package have changed and 
dropped the fmex* files? It now seems to contain cmex*-files instead, 
but I do not know if that is the correct interpretation.


Regards

Johan


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Re: [webmin-l] how to redirect a domain in virtualmin

[Jamie Cameron]

Assuming you are running Virtalmin 3.78 or later, you can just select AAA.com
from the left menu, go to Server Configuration -> Website Redirects, and create
a redirect from / to the URL http://BBB.com/index.php?lang=en .

 - Jamie

On 29/Apr/2010 09:35 Jozsi Vadkan  wrote ..
> The question is simple.
> 
> The answer [is there any] isn't simple [it's not implemented in
> virtualmin yet?].
> 
> So:
> 
> There are two domains:
> 
> AAA.com
> 
> and:
> 
> BBB.com
> 
> Ok! Both domains are on the Virtualmin server, Ok!
> 
> The big question:
> 
> How can I redirect
> 
> AAA.com
> 
> to:
> 
> BBB.com/index.php?lang=en
> 
> ?
> 
> In the menu: Apache Servers -> AAA.com -> Aliases and Redirections -> I
> fill the forms as the:
> 
> http://doxfer.com/Webmin/ApacheWebserver
> 
> says it would work -> Save -> Apply Changes -> it doesn't work.
> 
> Webmin version: 1.350 / Lenny
> 
> 
> 
> So is there an offical howto/doc/anyTHING, that describes, how to
> redirect "AAA.com" to "BBB.com/index.php?lang=en" ???
> 
> 
> Thank you.
> 
> Sorry for posting to two mailing lists, but I just can't seem to find a
> working howto :O [I read about this problem in forums, others complain
> about it too!]
> 
> 
> --
> -
> Forwarded by the Webmin mailing list at webadmin-l...@lists.sourceforge.net
> To remove yourself from this list, go to
> http://lists.sourceforge.net/lists/listinfo/webadmin-list


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Re: Synaptic hangs when updating Debian testing

[Edward C. Jones]

I ran
 apt-get -f install
The output was:

Reading package lists...
Building dependency tree...
Reading state information...
The following packages were automatically installed and are no longer 
required:

 network-manager-pptp-gnome libjs-jquery gs libmagickcore2-extra
 ghostscript-x devicekit-disks liblzma1 libxxf86misc1
 wwwconfig-common redland-utils libparted1.8-12 libmagickcore2 
 libtiffxx0c2 libmagickwand2 fastjar libxklavier15 javascript-common

 resolvconf raptor-utils libntfs-3g54 libntfs-3g73
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 84 not upgraded.


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Package install warns to stop XDM service, but it's not running

[Tom Schlodder]

Hello;

FYI: I'm new to Linux :)

I am running Debian and attempting to install the cvm package.  I recieve an
warning, stating that I have to manually stop the XDM service, but when I
use /etc/init.d/xdm stop, it says that XDM is not running.  I have also used
rcconf and de-selected XDM.

Thanks for you help :)

--Tom

Re: [TexLive] This math formula work a few month a go, but nowadays it didn't work anymore

[Norbert Zeh]

Marcelo Laia [2010.04.29 1321 -0300]:
> Hi,
> 
> I have opened this thread http://tinyurl.com/2amjquj
> 
> Could you help there or here?
> 
> Thank you very much!

Hmm, there's something weird here.  You are missing the font file
fmex8.pfb.  If I search for it using apt-file, apt-file claims that this
file is part of texlive-base.  I have this package installed, but the
whole directory where this file is supposed to live does not exist.
Something wrong with the texlive-base package?

- Norbert


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Re: how to redirect a domain in virtualmin

[Mihamina Rakotomandimby]

> Jozsi Vadkan  :
>The big question:
>How can I redirect
>AAA.com
>to:
>BBB.com/index.php?lang=en
>?

With Apache. RedirectPermanent, or RewriteRule.
A few lines in apache configuration file.
A dont understand why you use such bloatware for that...

But it's your choice.

-- 
   Architecte Informatique chez Blueline/Gulfsat:
Administration Systeme, Recherche & Developpement
+261 34 29 155 34 / +261 33 11 207 36


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The modem-related questions: connection and enroll.

[Sthu Deus]

Good day, again.


Can I use for connection through ppp something like this:

pon isp /dev/ttyACM0

where
isp is my /etc/ppp/peers/isp file,
/dev/ttyACM0 - the modem device.

In other words, may I set the modem device name as the command parameter 
instead of specifying the device in /etc/ppp/peers/isp file - for the multiple 
ISPs/devices -  its multiplication of the /etc/ppp/peers/isp*-dev* files.

Another question is regarding connection enrolling for farther traffic volumes 
consideration: if I set in pppd options file a log file that can be viewed by 
usual user - how I can track all the technical connections that belong to 
single human manual connection? - That is when a user has a connection 
established - the pppd can make reconnections - all they will belong to the 
same user's PID. But the PID is not written into that /var/log/pppd.log - as it 
is in /var/log/messages. No any marks on when the user required to establish 
the connection - nor to finish it. So, how I can distinguish all the records in 
/var/log/pppd.log that belong to single user's connection? Please, any ideas.


Thanks for Your time.

PS Please, reply to the list.


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Re: [OT] Home UPS (was Filesystem recommendations)

[Kelly Clowers]

On Thu, Apr 29, 2010 at 08:54, Stephen Powell  wrote:
> On Thu, 29 Apr 2010 11:26:52 -0400 (EDT), Stan Hoeppner wrote:
>>
>> Anyway, the way I've always looked at the residential side of the UPS debate
>> is to ask myself this question:  Is it worth spending $100 to surge and
>> power backup protect my $1000 PC and printer?  For me that answer is an
>> emphatic yes.
>
> You make a strong case.  But I come from a different perspective than
> you do.  I don't have any new hardware at home.  The only piece of
> equipment I bought new was a 4-port Ethernet router which cost me about
> $20, I think.  Almost everything else was either given away or thrown
> away or sold used for a low price.  The most expensive computer I own
> cost me somewhere around $300, I think.  I bought it used 2 years ago,
> and it's market value today is probably around $150-200.  All my monitors
> (with the exception of those built-in to laptops) are thrown-away CRTs.
> In other words, my home hardware collection consists almost exclusively
> of dumpster-diver specials.  How much money am I willing to spend to
> protect my hardware?  Probably not as much as you are.  Still, it would
> be nice to have.  Maybe I'll put it on my Christmas list.  :-)
>
> Oh, wait.  I did buy my powered speakers new -- about 15 years
> ago.  ;-)

For me, it is only partly about my hardware. It is also about my data.
I have backups, but I didn't used to, and I would just as soon not
have to go through a restore process. And even a simple power
outage that wouldn't harm hardware might at least produce the
need for a fsck (not as much of a problem with ext4, but again
I would rather avoid the situation entirely).

Furthermore most almost all power outages here are very brief,
and I end up not having to shutdown at all, which is just pure
convenience. For me, my Back-UPS XS 1000 was one of my
best computer-related purchases.


Cheers,
Kelly Clowers


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Re: To switch usb-modem to modem-mode.

[Umarzuki Mochlis]

On Fri, Apr 30, 2010 at 12:48 AM, Sthu Deus  wrote:

> Good day.
>
>
> I have such a problem: I need to switch an usb-modem Huawei E1550 deom
> cd-rom mode to modem modem. AFAIK usb-modeswitch utility can help me w/ this
> BUT! - it is not installable IMHO in stable repo. Even though I will install
> it from testing - it will destroy my lovely KDE-3.5 and a huge other
> packages. So, is there way for me for now - not when next release will be
> released and not destroying so many packages - to switch the modem?
>
> May, here are the (usb-)modem experts that can help me how I can switch it
> with the tools we have in the stable version?
>
>
i get usb-modeswitch package from here
https://forge.betavine.net/frs/?group_id=12&release_id=247


>
> Big thanks for advance and Your time.
>
> PS Please, reply to the list.
>
>
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>
>


-- 
Regards,

Umarzuki Mochlis
http://debmal.my

To switch usb-modem to modem-mode.

[Sthu Deus]

Good day.


I have such a problem: I need to switch an usb-modem Huawei E1550 deom cd-rom 
mode to modem modem. AFAIK usb-modeswitch utility can help me w/ this BUT! - it 
is not installable IMHO in stable repo. Even though I will install it from 
testing - it will destroy my lovely KDE-3.5 and a huge other packages. So, is 
there way for me for now - not when next release will be released and not 
destroying so many packages - to switch the modem?

May, here are the (usb-)modem experts that can help me how I can switch it with 
the tools we have in the stable version?


Big thanks for advance and Your time.

PS Please, reply to the list.


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Re: Questions about RAID 6

[Dan Ritter]

On Mon, Apr 26, 2010 at 04:44:32PM -0500, Boyd Stephen Smith Jr. wrote:
> On Monday 26 April 2010 09:29:28 Tim Clewlow wrote:
> > I'm getting ready to build a RAID 6 with 4 x 2TB drives to start,
> > but the intention is to add more drives as storage requirements
> > increase.
> 
> Since you seem fine with RAID 6, I'll assume you are also fine with RAID 5.
> 
> I don't know what your requirements / levels of paranoia are, but RAID 5 is 
> probably better than RAID 6 until you are up to 6 or 7 drives; the chance of 
> a 
> double failure in a 5 (or less) drive array is minuscule.


It's not minuscule; it happens all the time. The key is that the
double failure won't be simultaneous: first one drive goes, and
then the extra stress involved in rebuilding it makes another
drive go. Then it's time to replace disks and restore from
backup.

-dsr-


-- 
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You can't defend freedom by getting rid of it.


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how to redirect a domain in virtualmin

[Jozsi Vadkan]

The question is simple.

The answer [is there any] isn't simple [it's not implemented in
virtualmin yet?].

So:

There are two domains:

AAA.com

and:

BBB.com

Ok! Both domains are on the Virtualmin server, Ok!

The big question:

How can I redirect

AAA.com

to:

BBB.com/index.php?lang=en

?

In the menu: Apache Servers -> AAA.com -> Aliases and Redirections -> I
fill the forms as the:

http://doxfer.com/Webmin/ApacheWebserver

says it would work -> Save -> Apply Changes -> it doesn't work.

Webmin version: 1.350 / Lenny



So is there an offical howto/doc/anyTHING, that describes, how to
redirect "AAA.com" to "BBB.com/index.php?lang=en" ???


Thank you.

Sorry for posting to two mailing lists, but I just can't seem to find a
working howto :O [I read about this problem in forums, others complain
about it too!]


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Re: sympa user/group prob on list creation (possibly)

[Jeffrey B. Green]

Jeffrey B. Green wrote:
> 
> Obviously, the suexecusergroup isn't being applied to the fcgi scripts.
> Anyone have the answer for why it is not? Or alternatively should it
> work and should I be digging deeper into the logs, i.e. I have a config
> error somewhere?
> 

A misconfig. Finding and following the instructions on the sympa.org
site got it right, e.g.

UID CMD
sympa /usr/bin/perl /usr/lib/sympa/bin/sympa.pl
sympa /usr/bin/perl -U /usr/lib/cgi-bin/sympa/sympa_soap_server.fcgi
sympa /usr/bin/perl -U /usr/lib/cgi-bin/sympa/wwsympa.fcgi
sympa /usr/bin/perl -U /usr/lib/cgi-bin/sympa/sympa_soap_server.fcgi
sympa /usr/bin/perl -U /usr/lib/cgi-bin/sympa/wwsympa.fcgi

-jeff


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[TexLive] This math formula work a few month a go, but nowadays it didn't work anymore

[Marcelo Laia]

Hi,

I have opened this thread http://tinyurl.com/2amjquj

Could you help there or here?

Thank you very much!

-- 
Marcelo Luiz de Laia
Lages - SC - Brasil (Brazil)
Linux user number 487797


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Re: [OT] Home UPS (was Filesystem recommendations)

[Boyd Stephen Smith Jr.]

On Thursday 29 April 2010 10:54:47 Stephen Powell wrote:
> On Thu, 29 Apr 2010 11:26:52 -0400 (EDT), Stan Hoeppner wrote:
> > Is it worth spending $100 to
> > surge and power backup protect my $1000 PC and printer?  For me that
> > answer is an emphatic yes.
> 
> You make a strong case.  But I come from a different perspective than
> you do.  I don't have any new hardware at home.  The only piece of
> equipment I bought new was a 4-port Ethernet router which cost me about
> $20, I think.  Almost everything else was either given away or thrown
> away or sold used for a low price.
> 
> Oh, wait.  I did buy my powered speakers new -- about 15 years
> ago.  ;-)

A UPS probably won't last that long (the battery isn't designed for that 
AFAIK).  However it is something that isn't replaced often, since power has 
been fairly standard (V / Hz / Plug shape and polarity) for a while.

For those reasons and more, a working UPS is rather hard to find when 
dumpster-diving.

Also, clean power should make your existing hardware last longer.  That might 
be a big plus since you may be the type that never disposes of working 
hardware.
-- 
Boyd Stephen Smith Jr.   ,= ,-_-. =.
b...@iguanasuicide.net  ((_/)o o(\_))
ICQ: 514984 YM/AIM: DaTwinkDaddy `-'(. .)`-'
http://iguanasuicide.net/\_/


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Description: This is a digitally signed message part.

Re: Filesystem recommendations

[Monique Y. Mudama]

On Thu, Apr 29 at 10:26, Stan Hoeppner penned:
> 
> In the U.S. most business facilities have more stable power than
> residential areas.  

Probably true, but I've been living in my house maybe two years longer
than I've been in this office, and I've had fewer power problems at home
than at work.  To be fair, there haven't been many in either case.  So
as always, YMMV.

-- 
monique


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Re: Filesystem recommendations

[Monique Y. Mudama]

On Thu, Apr 29 at  9:50, Stephen Powell penned:
> 
> I agree with John.  Stan must hobnob with an elite crowd.  I don't
> have a UPS at home either, and I don't know anyone that does.  I do
> have one at work, but even there most desktop systems aren't on it.
> The only reason that my desktop system uses the UPS is that my
> cubicle is on raised floor inside the computer room and I connected
> it myself.  Most desktop users, even at the office, are not so
> privileged.  And my employer is a very big entity, financially.
> It's not a small business.

I don't have one on my home workstation - I do on the server, and I keep
anything important on it.  I've also found that UPSes can fail
eventually, and you might not know until the brown-out from which it
doesn't protect you.  I use ext3 on the server, which has fine
erformance for my needs.  I use the OS Which Must Not Be Named on my
workstation.

(I don't have a good reason not to have a UPS on my workstation -
basically laziness.)

As far as I know, no one at my mid-sized company has a UPS on his or
her workstation.  The expectation, again, is that important data goes
on the fileserver, although for various reasons that expectation is
not always correct.  We do have the option of requesting backups for
particular directories on our workstations, but I think they're
nightly at best.  I've actually asked about getting a UPS here and
there, but given that no one else has one and that we rarely get
brownouts, let alone blackouts, I haven't pushed the question.

I do see a lot of non-techie people using laptops as their only
computer; none of those people run linux or would recognize the term
"filesystem."  Among the techie people I know (in the US, so relatively
privileged), very few use a laptop as their primary computer; it's
usually a supplement to a beefier desktop machine.

But regardless, this is back to one of those eternal tradeoffs -
performance vs. data integrity.  I see no reason I shouldn't use a UPS
*and* a journalling filesystem when the performance of that filesystem
is adequate for my needs.

-- 
monique


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sympa user/group prob on list creation (possibly)

[Jeffrey B. Green]

Hi,

I have my sympa web setup with a suexecusergroup to sympa sympa. However
it seems that when I do a list creation via the web interface,
everything in the /var/lib/sympa/expl/listname directory gets the
default apache setup for the owner and group, i.e. www-data:www-data.
Doing a (trimmed down) ps (of pgrep sympa) gives:

UID CMD
www-data /usr/bin/perl -U /usr/lib/cgi-bin/sympa/sympa_soap_server.fcgi
www-data /usr/bin/perl -U /var/www/sympa/cgi-bin/wwsympa.fcgi
www-data /usr/bin/perl -U /usr/lib/cgi-bin/sympa/sympa_soap_server.fcgi
www-data /usr/bin/perl -U /var/www/sympa/cgi-bin/wwsympa.fcgi
sympa /usr/bin/perl /usr/lib/sympa/bin/sympa.pl

Obviously, the suexecusergroup isn't being applied to the fcgi scripts.
Anyone have the answer for why it is not? Or alternatively should it
work and should I be digging deeper into the logs, i.e. I have a config
error somewhere?

thanks,
-jeff


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[OT] Home UPS (was Filesystem recommendations)

[Stephen Powell]

On Thu, 29 Apr 2010 11:26:52 -0400 (EDT), Stan Hoeppner wrote:
> 
> Anyway, the way I've always looked at the residential side of the UPS debate
> is to ask myself this question:  Is it worth spending $100 to surge and
> power backup protect my $1000 PC and printer?  For me that answer is an
> emphatic yes.

You make a strong case.  But I come from a different perspective than
you do.  I don't have any new hardware at home.  The only piece of
equipment I bought new was a 4-port Ethernet router which cost me about
$20, I think.  Almost everything else was either given away or thrown
away or sold used for a low price.  The most expensive computer I own
cost me somewhere around $300, I think.  I bought it used 2 years ago,
and it's market value today is probably around $150-200.  All my monitors
(with the exception of those built-in to laptops) are thrown-away CRTs.
In other words, my home hardware collection consists almost exclusively
of dumpster-diver specials.  How much money am I willing to spend to
protect my hardware?  Probably not as much as you are.  Still, it would
be nice to have.  Maybe I'll put it on my Christmas list.  :-)

Oh, wait.  I did buy my powered speakers new -- about 15 years
ago.  ;-)

-- 
  .''`. Stephen Powell
 : :'  :
 `. `'`
   `-


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Re: Filesystem recommendations

[Stan Hoeppner]

Stephen Powell put forth on 4/29/2010 8:50 AM:

> I agree with John.  Stan must hobnob with an elite crowd.  

Not really.  A computer educated crowd maybe, but by no means elite for most
definitions of elite.

> I don't
> have a UPS at home either, and I don't know anyone that does.

Be the first.  Even something like this will get you through browns and sags
without a burb from the PC, and will give you 5-20 minutes to do a proper
shutdown with an average mini tower in the case of total outages due to the
occasional storm or line crew replacing a transformer, etc.  Less than $50
at WorstBuy:

http://www.bestbuy.com/site/CyberPower+-+425VA+SL-Series+Battery+Back-Up+System/6201585.p?id=1069297060711&skuId=6201585

A better choice IMO would be something like this:

http://www.bestbuy.com/site/APC+-+900VA+Battery+Back-Up+System/7842588.p?id=1142298456537&skuId=7842588

Provides surge protection for PC, dsl modem, coax; long battery runtime for
a single home PC.  Keeps the cordless phone base working during a storm
along with a desk lamp so you're not in total darkness.  They're great for
the living room home theater system too.  Allows you to watch the local
weather during a storm when the power is out.

> I do have one at work, but even there most desktop systems aren't
> on it.  The only reason that my desktop system uses the UPS is that
> my cubicle is on raised floor inside the computer room and I
> connected it myself.  Most desktop users, even at the office, are not
> so privileged.  And my employer is a very big entity, financially.
> It's not a small business.

In the U.S. most business facilities have more stable power than residential
areas.  Most offices have transformers inside the building and buried cable
to the building, unlike residential which, if not fairly new, has all above
ground cabling and multiple houses on one transformer up on a power pole.
The latter is a magnet for falling tree limbs due to wind in the summer and
ice in the winter.  Most offices don't suffer from browns and sags due to
having dedicated transformers.  Usually when office power goes out it's due
to a major component failure at a substation or an overhead line somewhere
in between that got clipped by a boom truck or the like.  In short, office
desktops usually don't need a UPS, especially if user data is stored on
network shares on UPS backed servers.  If power goes out it just garbles
local temp files--unless it's a Windows PC and the registry was held open,
as it usually is, even though it's not supposed to be...

Anyway, the way I've always looked at the residential side of the UPS debate
is to ask myself this question:  Is it worth spending $100 to surge and
power backup protect my $1000 PC and printer?  For me that answer is an
emphatic yes.

-- 
Stan


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Re: installing Lenny packages in Squeeze

[Boyd Stephen Smith Jr.]

On Wednesday 28 April 2010 22:11:00 Rob Owens wrote:
> My understanding is that live-helper must build the kernel so that
> certain modules necessary to the live system get included.  I confess
> that I don't completely understand that answer, but it's what I was told
> by the developer.

You should look into the live-helper configuration and adjust where it gets 
the kernel source and any (extra?) patches it applies.  It should be able to 
work with kernel sources provided from lenny-backports with the proper 
configuration, since it already works with both Lenny and Squeeze kernel 
sources.  The bpo kernels are not packaged significantly differently.

If live-helper doesn't have any relevant configuration, looking into how it 
receives, patches, compiles, and packages the kernel should give you some 
insight into a work-around.  (e.g. repackaging the bpo kernel package to have 
the same package name but a higher version than the Lenny kernel package.)
-- 
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Wichtig: Linktausch mit Ihrer Webseite

[Dipl . -Ing . D . Herrmann| GoAllgaeu . com]

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Daniel Herrmann
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Re: installing Lenny packages in Squeeze

[Boyd Stephen Smith Jr.]

On Wednesday 28 April 2010 20:35:29 Rob Owens wrote:
> If I were to install a bare-bones Squeeze system, then add Lenny
> repositories and declare Lenny to be the Default-Release in apt.conf,
> can I expect to have many problems installing a full desktop environment
> from the Lenny repos?  (Gnome, LXDE, or Fluxbox, most likely).

This type of setup is neither tested nor supported.  Since a number of library 
transitions have already gone into Squeeze, I would expect issues, though I 
don't know what.
-- 
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Re: Creating a debian local mirror from 5 debian DVDs

[L.Guruprasad]

Hi,

> Take a look at "apt-cacher" instead of a full mirror, see whether it
> could help you.
> http://www.debuntu.org/how-to-set-up-a-repository-cache-with-apt-cacher

>> Or approx - I use it and like it very much.

The problem is that these tools involve one time download and I don't
want to make even that as I have all the debian 504 dvds with me. I
can't even do that one time download.

Btw, how do I turn off the digest mode and subscribe to the regular one
mail per mail to the list mode?

Regards,
Guruprasad


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Re: backing up LVM volumes

[Boyd Stephen Smith Jr.]

On Thursday 29 April 2010 06:24:54 Ron Johnson wrote:
> On 04/27/2010 02:51 PM, Boyd Stephen Smith Jr. wrote:
> > For "normal" file operations, taking an LVM snapshot of the mounted
> > filesystem and then making your backup from that should be sufficient. 
> > This should even work for postgreSQL database files (though, it is not
> > optimal).  MySQL has a history of being more flaky, but it might work
> > there as well.
> >
> > If you snapshot a mounted file system, the snapshot will be approximately
> > equivalent to the original file system, uncleanly unmounted at that exact
> > moment (think: power failure).  It's possible to then take backups of an
> > active system with no downtime (although I/O load will certainly go up
> > during the backup).  If you mount the snapshot as part of the backup
> > procedure, a journaled file system will want to replay the journal then. 
> > Otherwise, a journal replay will be required at restore time.  PostgreSQL
> > (etc.) will also end up doing a journal replay / recovery at restore
> > time.
> 
> A proper RDBMS will have a hot-backup feature, so I'd still say that
> a file-only backup is the way to go.

Just because something doesn't advertise itself as an RDBMS doesn't mean that 
it won't be in the middle of doing something "odd"[1] to a file.  You should, 
if at all possible, quiesce the filesystem before you back it up, or at least 
quiesce the individual files prior to back up.

cp -a and rsync will not do either by themselves.  Most of what my message 
said about doing a unmount, snapshot, mount dance would also apply to a 
remount r/o, snapshot, remount r/w dance and it may be more practical for some 
file systems.

Both MySQL and PostgreSQL have "hot" backup procedures that do not require 
taking down the database daemon.  Having PostgreSQL relocate its journal files 
rather than delete them can result in a "live" backup, that is literally only 
a few dozen write-queries behind the production server, at most.

[1] I should really be more specific instead of saying "odd" and "normal".  
"Normal" means writing to the end of a file, truncating a file at any offset, 
reading from any part of a file.  "Odd" means (over) writing at a position 
that is not the end of the file.  RDBMS are more likely to do the last 
(updating fixed-length records, or the fixed-length parts of records), but 
they are not the only application that might have a good reason for doing it 
that way.
-- 
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Re: Filesystem recommendations

[Boyd Stephen Smith Jr.]

On Wednesday 28 April 2010 20:26:46 Rob Owens wrote:
> On Mon, Apr 26, 2010 at 08:28:37AM -0500, Stan Hoeppner wrote:
> > Javier Barroso put forth on 4/26/2010 6:56 AM:
> > > Why Debian Installer doesn't change its default filesystem to xfs if
> > > it is better than ext3 / ext4? I think always is better stick to
> > > defaults if it is possible
> >
> > If one disk filesystem was better than all the others in all ways, then
> > Linus would only allow one FS in the kernel tree.  As of 2.6.33 there are
> > no less than 7 stable primary disk filesystems offered in the kernel. 
> > Your question is a bit simplistic, and not really valid.  There is no
> > single "perfect" filesystem.  IMO, for servers anyway, XFS is pretty
> > close.
> >
> > Newbies _should_ always stick to defaults.  Experts install with expert
> > mode, and choose exactly what they want/need.
> >
> > I didn't write the Debian installer so I can't tell you why EXT is the
> > default.  I can only speculate.  Thankfully the installer offers us
> > expert mode so we can do whatever we want.  In this regard, I guess the
> > Debian team considers EXT the best choice for non-experts.
> 
> If I'm right that EXT3 has superior resilience to power loss (see my
> othe post in this thread) , then that
> fact alone makes it a good choice for default filesystem.

Ext3 basically syncs to disk every 5 seconds or so.  Ext4 didn't, but it's 
possible that has been / will be put back.  XFS uses longer gaps between disk 
syncs by default, but it is tunable.

You could always use the "sync" file system option to avoid the whole issue.  
If that's no good enough, a simple shell script (while sleep 5; do sync; done) 
running as root (perhaps started from init) will fill basically the same role.

Both XFS and Ext3/4 recover through journal replay, and it is usually enough.  
Rarely, a manual filesystem check will be required, and xfs_check is usually 
much faster than fsck.ext3 or even fsck.ext4.
-- 
Boyd Stephen Smith Jr.   ,= ,-_-. =.
b...@iguanasuicide.net  ((_/)o o(\_))
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Re: Creating a debian local mirror from 5 debian DVDs

[Mihamina Rakotomandimby]

> "L.Guruprasad"  :
> I want to do mass network installation using pxe boot and using a
> local debian mirror.

Also care about the "security" download during the install.
You should cache them.

-- 
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Administration Systeme, Recherche & Developpement
+261 34 29 155 34 / +261 33 11 207 36


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Re: How to trick my Debian in thinking that a package is not installed

[Monique Y. Mudama]

On Wed, Apr 28 at 21:07, Daniel Burrows penned:
> 
>   With aptitude 0.6.2+, I'd be curious to know whether you get the
>   answers you want (with less removals and less need to manually
>   hold) with this setting or something like it:
> 
> Aptitude::ProblemResolver::SolutionCost="2*removals +
> canceled-actions,safety,priority"
> 
>   (sorry about the long line)

Thanks for this suggestion.

I'll let you know once I upgrade to the 0.6.2 line; first I need to
keep 0.6.5.1 from removing some packages I'd like to keep =)  Ahh,
sid, I would be so bored without you!

-- 
monique


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Re: Questions about RAID 6

[Boyd Stephen Smith Jr.]

On Wednesday 28 April 2010 20:51:18 Stan Hoeppner wrote:
> Mike Bird put forth on 4/28/2010 5:48 PM:
> > On Wed April 28 2010 15:10:32 Stan Hoeppner wrote:
> >> Given the way most database engines do locking, you'll get zero
> >> additional seek benefit on reads, and you'll take a 4x hit on writes. I
> >> don't know how you could possibly argue otherwise.
> >
> > Linux can overlap seeks on multiple spindles, as can most operating
> > systems of the last fifty years.
> 
> Of course it can, and it even performs I/Os in parallel on multicore or smp
> systems, in addition to overlapped I/O.  You're still missing the point
>  that you have to perform 4x the writes with the 4 disk RAID 1 setup, which
>  reduces write performance by a factor of 4 vs a single disk,

4x the data to write does not mean that it take 4x the time.  Since I/O 
performance is generally measured in B/s or ops/s, reducing it by a factor of 
4 would mean taking 4x the time to write the same amount.  That doesn't happen 
in a 4-way RAID-1.

Instead, all the writes to the disk are triggered asynchronously, and 
virtually simultaneously, by the OS.  At some time later, the OS waits for the 
disks to signal that those writes have completed.  We'll assume worse-case and 
make the OS refuse to do anything else until all those writes have finished, 
even then.  Your average time to having all the writes completed is just a 
tiny bit more than writing to a single disk.  [Assuming identical disks, it's 
based on the average write performance of a single disk, and the standard 
deviation of write perform of a single disk.  Something like (1 + StdDev/30) * 
Average.

The OS can be smarter and only wait for 2 of the writes to finish, since the 
array is consistent at that point, which would make that number even better.

In short, RAID-1 does hurt your write throughput, but not by much.  It can 
improve both read response rate and read throughput, although the current 
kernel implementation isn't great at either.

>  and increases
>  write bandwidth by a factor of 4 for writes.

Assuming software RAID, it does increase the bandwidth required on the PCI-X 
or PCIe bus -- but either is so much faster than disks to rarely be a 
bottleneck.  Assuming SATA or SAS connection and no port multipliers, it 
doesn't affect the bandwidth since both are serial interfaces, so all 
bandwidth is measured per attached device.

> Thus, on a loaded multi-user server, compared to a single disk system,
> you've actually decreased your overall write throughput compared to a
>  single disk.  In other words, if the single disk server can't handle the
>  I/O load, running a 4-way RAID 1 will make the situation worse.  Whereas
>  running with RAID 10 you should get almost double the write speed of a
>  single disk due to the striping, even though the total number of writes to
>  disk is the same as with RAID 1.

While I genuinely agree that RAID-1/0 makes more sense than RAID-1 when 
dealing with 3 or more disks, it comparative performance greatly depends on 
the various options you've created your array with.  (Particularly, since the 
current kernel implementation would let you do a 1+2 mirroring [original data 
+ 2 copies] across 4 drives and still call it RAID-1/0)

In the simple case where you have 2 pairs of mirrored drives and you do the 
striping across the pairs (i.e. as most 4-way RAID-1/0 hardware controllers 
do), your read response is about the same as a single disk (just slightly less 
than RAID-1), your read throughput is about 4x a single disk (same as RAID-1), 
and your write throughput is a little less than 2x a single disk (almost 2x 
RAID-1).  Read response (for either/both) could be better, but again, the 
current kernel implementation isn't that great.  [RAID-1 gives you more 
redundancy, of course.]
-- 
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Jemputan preview kaedah TIPS (Teknik Ingat Pantas & Sistematik) 1 Mei 2010

[Impact Learning Center]

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di 03-33249980 untuk pendaftaran.



Sekian Terima Kasih


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Re: Filesystem recommendations

[Stephen Powell]

On Thu, 29 Apr 2010 09:07:00 -0400 (EDT), John Hasler wrote:
> Stan Hoeppner wrote:
>> I'd say most U.S. desktop users have a UPS.
> 
> I'd say most home desktop users and the majority of small
> businesses don't.
>>
>> I know I do.
> 
> I don't.  I can't afford it (and I've never lost important data in a
> power failure (but then I have little important data to lose)).
>>
>> Pretty much every computer user I know personally has a UPS.
> 
> No non-power-user I know has one.  Most don't know what one is.

I agree with John.  Stan must hobnob with an elite crowd.  I don't
have a UPS at home either, and I don't know anyone that does.
I do have one at work, but even there most desktop systems aren't
on it.  The only reason that my desktop system uses the UPS is that
my cubicle is on raised floor inside the computer room and I
connected it myself.  Most desktop users, even at the office, are not
so privileged.  And my employer is a very big entity, financially.
It's not a small business.

-- 
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Re: installing Lenny packages in Squeeze

[Rob Owens]

On Wed, Apr 28, 2010 at 08:17:57PM -0700, Jimmy Johnson wrote:
> Rob Owens wrote:
>
>> I use a Debian-Live USB and I like to run Lenny because of the
>> infrequent updates.  But one of my laptops requires the Squeeze kernel
>> in order for wifi to work.  I've been told by the Debian-Live developer
>> that I cannot install alternate kernels on my live system (otherwise I'd
>> be able to use a kernel from backports.org).
>
>
>
> What you need is Debian Backports  
> www.backports.org/dokuwiki/doku.php?id=instructions You will find your  
> kernel upgrade there, plus you will need to add linux-firmware for the  
> new kernel, both the kernel and firmware are in the backports.

I can't use backports, according to the developer of debian-live.  That
was the first thing I tried, but it didn't work.

-Rob


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Re: Filesystem recommendations

[Rob Owens]

On Thu, Apr 29, 2010 at 07:36:39AM -0500, Stan Hoeppner wrote:
> Rob Owens put forth on 4/28/2010 8:26 PM:
> > Many/most
> > users don't run a UPS and sudden unexpected power loss is a real
> > possibility for them.
> 
> Really?  I was under the impression that laptops and netbooks are now the
> primary computer of well over 50% of users worldwide (not counting smart
> phones).  Laptops have a built-in UPS.  In the U.S., given the numbers of
> cheap APC, Triplite, and Belkin UPS on the shelves at $big_box_store I'd say
> most U.S. desktop users have a UPS.  I know I do.  Pretty much every
> computer user I know personally has a UPS.  In other parts of the world I'm
> sure there are many people who can barely afford a PC let alone a UPS.  Used
> laptops are a great fit for those users, assuming the batteries aren't shot.
> 
I only know for sure of one friend who has a UPS.  He's the sysadmin for
his company.  I don't even have one, and I know better!  Good point
about laptops and netbooks, though.

By the way, I use XFS on my MythTV storage drive and I haven't had any
problem w/ data loss due to power outages.  It has happened to me
several times, though, when I was using JFS.  That's why I switched to
XFS.  (I chose JFS and XFS over EXT3 in this case, due to their ability
to very quickly delete large files).

-Rob


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Re: Creating a debian local mirror from 5 debian DVDs

[Yitzhak Grossman]

On Thu, 29 Apr 2010 15:54:32 +0530
Anand Sivaram  wrote:

> On Thu, Apr 29, 2010 at 15:23, L.Guruprasad  wrote:
> > Hi all,
> > I want to do mass network installation using pxe boot and using a local
> > debian mirror. However I don't want to download the files from a debian
> > mirror to create a local one? Is it possible to create a mirror using
> > the 5 DVDs of debian that I have? I tried using the option
> > 'debian-installer/allow_unauthenticated=true' in pxelinux.cfg/default
> > file, but I get a 'bad archive mirror' error. How to work around this
> > problem?
> >
> > Thank you.
> >
> > Regards,
> > Guruprasad
> >
> >
> > --
> > To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org
> > with a subject of "unsubscribe". Trouble? Contact 
> > listmas...@lists.debian.org
> > Archive: http://lists.debian.org/4bd95709.1050...@gmail.com
> >
> >
> 
> Take a look at "apt-cacher" instead of a full mirror, see whether it
> could help you.
> http://www.debuntu.org/how-to-set-up-a-repository-cache-with-apt-cacher

Or approx - I use it and like it very much.

Yitzhak
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Re: Filesystem recommendations

[John Hasler]

Stan Hoeppner
> I'd say most U.S. desktop users have a UPS.

I'd say most home desktop users and the majority of small businesses
don't.

> I know I do.

I don't.  I can't afford it (and I've never lost important data in a
power failure (but then I have little important data to lose)).

> Pretty much every computer user I know personally has a UPS.

No non-power-user I know has one.  Most don't know what one is.
-- 
John Hasler


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Re: New monitor, how to change screen resolution?

[Stephen Powell]

On Thu, 29 Apr 2010 07:42:58 -0400 (EDT), James Stuckey wrote:
> 
> I just changed monitors and the new one has a different resolution. How do I
> configure my system to account for the change?

You didn't provide much information, James.  I'm afraid that there's no
"one size fits all" answer to that question.  It depends on a lot of things.
Please provide the following information:

(1) The make and model of your computer
(2) The make and model of your video card
(3) The make and model of your monitor
(4) The type of monitor (CRT, LCD, etc.)
(5) The type of video connection used (digital, analog, etc.)
(6) The contents of /etc/X11/xorg.conf, if it exists
(7) The contents of /var/log/Xorg.0.log
(8) Which release of Debian you are running (Lenny, Squeeze, Sid, etc)

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Re: Filesystem recommendations

[Stan Hoeppner]

Rob Owens put forth on 4/28/2010 8:26 PM:
> Many/most
> users don't run a UPS and sudden unexpected power loss is a real
> possibility for them.

Really?  I was under the impression that laptops and netbooks are now the
primary computer of well over 50% of users worldwide (not counting smart
phones).  Laptops have a built-in UPS.  In the U.S., given the numbers of
cheap APC, Triplite, and Belkin UPS on the shelves at $big_box_store I'd say
most U.S. desktop users have a UPS.  I know I do.  Pretty much every
computer user I know personally has a UPS.  In other parts of the world I'm
sure there are many people who can barely afford a PC let alone a UPS.  Used
laptops are a great fit for those users, assuming the batteries aren't shot.

Don't read me wrong.  I'm not advocating XFS on laptops, although I do know
of many folks who use it on laptops.  For the average user there would be
little performance benefit.  For power users it's a valid possible choice.

-- 
Stan


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New monitor, how to change screen resolution?

[James Stuckey]

Hello,

I just changed monitors and the new one has a different resolution. How do I
configure my system to account for the change?

Re: downloaded .jnlp won't open

[Camaleón]

On Thu, 29 Apr 2010 06:35:41 -0500, Ron Johnson wrote:

> On 04/27/2010 11:11 AM, Camaleón wrote: [snip]
>>
>> How about these sample files? Can you run them?
>>
>> http://pscode.org/jws/api.html
>>
>> I'm afraid the problem resides not in your Icewasel or Java setup but
>> in JNLP file itself. Try running others.
>>
>>
> When I click on any of the "Launch ... Demo" buttons, it asks me to open
> the .jnlp file with /usr/lib/jvm/java-6-sun-1.6.0.20/jre
> 
> When I do so, the Java splash screen pops up, then I get an Application
> Error window saying "Unable to launch application."

You're running Squeeze, right? In Lenny there is no problem :-)

> The base exceptions are:
> java.net.SocketException: Network is unreachable
>  at java.net.PlainSocketImpl.socketConnect(Native Method) at
>  java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
> 
> com.sun.deploy.net.FailedDownloadException: Unable to load resource:
> http://www.pscode.org/jws/clipserv.jnlp

So you are facing the same bug the OP has with java. But I thought he 
alredy bypassed this... threads ago ;-)

Greetings,

-- 
Camaleón


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Re: downloaded .jnlp won't open

[Ron Johnson]

On 04/27/2010 11:11 AM, Camaleón wrote:
[snip]


How about these sample files? Can you run them?

http://pscode.org/jws/api.html

I'm afraid the problem resides not in your Icewasel or Java setup but in
JNLP file itself. Try running others.



When I click on any of the "Launch ... Demo" buttons, it asks me to 
open the .jnlp file with /usr/lib/jvm/java-6-sun-1.6.0.20/jre


When I do so, the Java splash screen pops up, then I get an 
Application Error window saying "Unable to launch application."


The base exceptions are:
java.net.SocketException: Network is unreachable
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)

com.sun.deploy.net.FailedDownloadException: Unable to load resource: 
http://www.pscode.org/jws/clipserv.jnlp


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Re: Odd logcheck behaviour.

[Friedrich Clausen]

>
> I suspect it's because you're using a relative path (./gigaspaces). You'll
> need the full path to it from cron which may not be in the same directory
> you were in.

Thanks for your reply. I am using an identical copy of the file on my
workstation and some excerpts from the logs. But I ran the egrep check
on the server itself using the actual logcheck configuration and log
file (fed it to "egrep -f") and it works as expected - stack traces
are filtered out. But when logcheck runs from cron then the stack
traces are not filtered out (using the same config file). Its bizarre
- I'll see what else I can find out.

Cheers,

Fred.
>
>
> --
> Chris Jackson
> Shadowcat Systems Ltd.
>


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Re: backing up LVM volumes

[Ron Johnson]

On 04/27/2010 02:51 PM, Boyd Stephen Smith Jr. wrote:
[snip]


For "normal" file operations, taking an LVM snapshot of the mounted filesystem
and then making your backup from that should be sufficient.  This should even
work for postgreSQL database files (though, it is not optimal).  MySQL has a
history of being more flaky, but it might work there as well.

If you snapshot a mounted file system, the snapshot will be approximately
equivalent to the original file system, uncleanly unmounted at that exact
moment (think: power failure).  It's possible to then take backups of an
active system with no downtime (although I/O load will certainly go up during
the backup).  If you mount the snapshot as part of the backup procedure, a
journaled file system will want to replay the journal then.  Otherwise, a
journal replay will be required at restore time.  PostgreSQL (etc.) will also
end up doing a journal replay / recovery at restore time.



A proper RDBMS will have a hot-backup feature, so I'd still say that 
a file-only backup is the way to go.


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Re: HotSpot Server

[Mihamina Rakotomandimby]

> Sokvantha YOUK  :
>Dear All,
>I am looking for hotspot server for Debian Lenny, could you please
>advice me which software is good enough to manage my hotspot setup for
>6 locations access point?

We use CoovaChilli.

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Administration Systeme, Recherche & Developpement
+261 34 29 155 34 / +261 33 11 207 36


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Re: howto setup my own wikipedia site

[gn643202]

Jozsi Vadkan wrote:
Can anyone post a link, howto install/setup a wikipedia-like site? 


I just want to put my "stiky-notes" to my own wikipedia site.

Thank you


   I have used Mediawiki for a couple of years for my "stiky-notes". 
This is a great idea.   Not only a home one, but for the network that I 
manage at our Church.



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Re: Gramps in Lenny

[gn643202]

Ravi Sista wrote:
Does it work?  In the Gramps website, I see mention of it working 
against Sid/Squeeze but nothing about Lenny.  I'd appreciate if someone 
who made this work in Lenny throw some light (what version/how to 
install i.e. download *.deb or through Synaptic etc.).  Thanks.
 
Ravi


   Gramps is a great package.  Have been using it for about three years 
since Etch.   The Gramps group is very active, so it changes quickly. 
But would recommend staying with the stable package.
   If you are going to use gramps, contact me off line.   I can offer a 
few little tips and show you some results.



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[Solved] Re: Ctrl+alt+Fn not showing consoles

[rudupere]

Le 29/04/2010 05:55, Justin The Cynical a écrit :


rudu wrote:


In single user mode, I can login on the first virtual console but
every other ctrl+alt+Fn I hit only gives me a black screen with a
prompt flashing in the upper left corner ...


IIRC, in single user mode, this is normal.



Launching a graphic session with startx instead of gdm/kdm doesn't
change anything except that I don't even have any flashing prompt on
my black screen anymore.



This is an old, old bug (IMO) in the binary nvidia module. I've had this
problem since getting Linux running on my old pentium m laptop with a
6000 go series chip.

For example:

http://www.nvnews.net/vbulletin/showthread.php?t=131639

and possible fix (seems to be hit or miss):
http://www.nvnews.net/vbulletin/showthread.php?t=120492




Bingo !!
That was it, an old bug from nvidia drivers.
The workaround that worked for me :
Append the line :
options nvidia NVreg_UseVBios=0
to the file /etc/modprobe.d/nvidia-kernel-nkc.conf

A big thank you to Justin and everyone who helped.

Jean-Marc


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Re: Creating a debian local mirror from 5 debian DVDs

[Anand Sivaram]

On Thu, Apr 29, 2010 at 15:23, L.Guruprasad  wrote:
> Hi all,
> I want to do mass network installation using pxe boot and using a local
> debian mirror. However I don't want to download the files from a debian
> mirror to create a local one? Is it possible to create a mirror using
> the 5 DVDs of debian that I have? I tried using the option
> 'debian-installer/allow_unauthenticated=true' in pxelinux.cfg/default
> file, but I get a 'bad archive mirror' error. How to work around this
> problem?
>
> Thank you.
>
> Regards,
> Guruprasad
>
>
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>
>

Take a look at "apt-cacher" instead of a full mirror, see whether it
could help you.
http://www.debuntu.org/how-to-set-up-a-repository-cache-with-apt-cacher


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