Re: [CentOS] C6 Firefox 45.1 segmentation faults

[Nux!]

Morning,

Thanks for testing Akemi, I'll work towards upgrading ffmpeg then and the deps. 
Will be fun. :-)

--
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Nux!
www.nux.ro

- Original Message -
> From: "Akemi Yagi" 
> To: "CentOS mailing list" 
> Sent: Tuesday, 3 May, 2016 01:32:55
> Subject: Re: [CentOS] C6 Firefox 45.1 segmentation faults

> On Mon, May 2, 2016 at 5:07 PM, Akemi Yagi  wrote:
>> On Mon, May 2, 2016 at 4:27 PM, Nux!  wrote:
>>
 What I'm intending to do is to rebuild ffmpeg from PUIAS/springdale
 (see my earlier post). Specifically, ffmpeg-2.1.1-1.sdl6.src.rpm. It
 requires a lot of other packages though. :-)
>>
>>> Akemi,
>>>
>>> Most of the packages should already be in my repo, EPEL or PUIAS.
>>> If this works, I'll look at incorporating it in nux-dextop.
>>>
>>> Lucian
>>
>> Indeed, it worked. Now need to test this thing ...
> 
> With my short test, so far, so good. No crash with the site that used
> to bomb out.
> 
> I needed the latest version of soxr(-devel) and xvidcore(-devel) from
> PUIAS to run (build) ffmpeg-2.1.1-1.sdl6. All other dependencies were
> available from EPEL and nux.
> 
> Akemi
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[CentOS] Centos 6.7: kernel: EDAC MC0: CE row 2, channel 1, label "": (..... (Correctable Patrol Data ECC))

[Dario Lesca]

After update from centos 6.6 to centos 6.7 and reboot it, I have get a
lot of this error into /var/log/messages:

> May  3 11:27:20 s-virt kernel: EDAC MC0: CE row 2, channel 1, label
> "": (Branch=0 DRAM-Bank=2 RDWR=Read RAS=6093 CAS=896, CE Err=0x1
> (Correctable Patrol Data ECC))
> May  3 11:27:21 s-virt kernel: EDAC MC0: CE row 2, channel 1, label
> "": (Branch=0 DRAM-Bank=1 RDWR=Read RAS=1330 CAS=4, CE Err=0x2000
> (Correctable Non-Mirrored Demand Data ECC))
> May  3 11:27:22 s-virt kernel: EDAC MC0: CE row 2, channel 1, label
> "": (Branch=0 DRAM-Bank=2 RDWR=Read RAS=2673 CAS=4, CE Err=0x2000
> (Correctable Non-Mirrored Demand Data ECC))
> May  3 11:27:23 s-virt kernel: EDAC MC0: CE row 2, channel 1, label
> "": (Branch=0 DRAM-Bank=2 RDWR=Read RAS=1335 CAS=4, CE Err=0x2000
> (Correctable Non-Mirrored Demand Data ECC))
> May  3 11:27:24 s-virt kernel: EDAC MC0: CE row 2, channel 1, label
> "": (Branch=0 DRAM-Bank=2 RDWR=Read RAS=1335 CAS=4, CE Err=0x2000
> (Correctable Non-Mirrored Demand Data ECC))
> May  3 11:27:25 s-virt kernel: EDAC MC0: CE row 2, channel 1, label
> "": (Branch=0 DRAM-Bank=2 RDWR=Read RAS=240 CAS=4, CE Err=0x2000
> (Correctable Non-Mirrored Demand Data ECC))
> May  3 11:27:26 s-virt kernel: EDAC MC0: CE row 2, channel 1, label
> "": (Branch=0 DRAM-Bank=3 RDWR=Read RAS=1796 CAS=900, CE Err=0x1
> (Correctable Patrol Data ECC))
> May  3 11:27:27 s-virt kernel: EDAC MC0: CE row 2, channel 1, label
> "": (Branch=0 DRAM-Bank=3 RDWR=Read RAS=1337 CAS=4, CE Err=0x2000
> (Correctable Non-Mirrored Demand Data ECC))
> May  3 11:27:28 s-virt kernel: EDAC MC0: CE row 2, channel 1, label
> "": (Branch=0 DRAM-Bank=3 RDWR=Read RAS=3094 CAS=900, CE Err=0x1
> (Correctable Patrol Data ECC))
> May  3 11:27:29 s-virt kernel: EDAC MC0: CE row 2, channel 1, label
> "": (Branch=0 DRAM-Bank=3 RDWR=Read RAS=240 CAS=6, CE Err=0x2000
> (Correctable Non-Mirrored Demand Data ECC))
> May  3 11:27:30 s-virt kernel: EDAC MC0: CE row 2, channel 1, label
> "": (Branch=0 DRAM-Bank=3 RDWR=Read RAS=240 CAS=6, CE Err=0x2000
> (Correctable Non-Mirrored Demand Data ECC))

I have "yum install edac-utils -y" and I have get this output:

> [root@s-virt ~]# edac-util -v
> mc0: 0 Uncorrected Errors with no DIMM info
> mc0: 0 Corrected Errors with no DIMM info
> mc0: csrow0: 0 Uncorrected Errors
> mc0: csrow0: ch0: 0 Corrected Errors
> mc0: csrow0: ch1: 0 Corrected Errors
> mc0: csrow0: ch2: 0 Corrected Errors
> mc0: csrow0: ch3: 0 Corrected Errors
> mc0: csrow1: 0 Uncorrected Errors
> mc0: csrow1: ch0: 0 Corrected Errors
> mc0: csrow1: ch1: 0 Corrected Errors
> mc0: csrow1: ch2: 0 Corrected Errors
> mc0: csrow1: ch3: 0 Corrected Errors
> mc0: csrow2: 0 Uncorrected Errors
> mc0: csrow2: ch0: 0 Corrected Errors
> mc0: csrow2: ch1: 80384 Corrected Errors
> mc0: csrow2: ch2: 0 Corrected Errors
> mc0: csrow2: ch3: 0 Corrected Errors
> mc0: csrow3: 0 Uncorrected Errors
> mc0: csrow3: ch0: 0 Corrected Errors
> mc0: csrow3: ch1: 8 Corrected Errors
> mc0: csrow3: ch2: 0 Corrected Errors
> mc0: csrow3: ch3: 0 Corrected Errors

The server is a:

> [root@s-virt ~]# lshw
> s-virt.dom.it
> description: Tower Computer
> product: ProLiant ML370 G5 (433752-421)
> vendor: HP
> serial: GBxxxM
> width: 64 bits
> capabilities: smbios-2.4 dmi-2.4 vsyscall64 vsyscall32
> configuration: boot=hardware-failure-fw chassis=tower
> family=ProLiant sku=433752-421 uuid=3437-3532-4742-3837-
> 35303557534D

with this RAM installed:
> [root@s-virt ~]# dmidecode -t memory|grep Size
> Size: 1024 MB
> Size: 2048 MB
> Size: No Module Installed
> Size: No Module Installed
> Size: 1024 MB
> Size: 2048 MB
> Size: No Module Installed
> Size: No Module Installed
> Size: 1024 MB
> Size: 4096 MB
> Size: No Module Installed
> Size: No Module Installed
> Size: 1024 MB
> Size: 4096 MB
> Size: No Module Installed
> Size: No Module Installed

I'm not a hardware guru and I do not know "decrypt" log and output
commands messages

What is the problem signaled into log?

What I must to do ?

Many thanks for your help.

-- 
Dario Lesca
(inviato dal mio Linux Fedora 23 Workstation)

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[CentOS] CentOS-announce Digest, Vol 135, Issue 1

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Today's Topics:

   1. CESA-2016:0706 Important CentOS 7 mercurial   Security Update
  (Johnny Hughes)


--

Message: 1
Date: Mon, 2 May 2016 15:13:40 +
From: Johnny Hughes 
To: centos-annou...@centos.org
Subject: [CentOS-announce] CESA-2016:0706 Important CentOS 7 mercurial
Security Update
Message-ID: <20160502151340.ga6...@n04.lon1.karan.org>
Content-Type: text/plain; charset=us-ascii


CentOS Errata and Security Advisory 2016:0706 Important

Upstream details at : https://rhn.redhat.com/errata/RHSA-2016-0706.html

The following updated files have been uploaded and are currently 
syncing to the mirrors: ( sha256sum Filename ) 

x86_64:
51b6f5e3a72006f3fb6bbc766931df37fcd7c16dc15b539b373d9811e6523bbb  
emacs-mercurial-2.6.2-6.el7_2.x86_64.rpm
8a050be0471fb23fdaf06bed1afa61627b818e61ef04215c35e85dcfda969521  
emacs-mercurial-el-2.6.2-6.el7_2.x86_64.rpm
a4ed7916f00e191d3bfe3b7801c83720a0d1f82ea4ace2ee89703fe04b322448  
mercurial-2.6.2-6.el7_2.x86_64.rpm
268517d78257bd1f03a057940c0ef4840720b1c463910e2db7846e54fe48cc91  
mercurial-hgk-2.6.2-6.el7_2.x86_64.rpm

Source:
f37cf4ed34868e7ac289d15265c2f08c0df15292cc0b19a162b4ae306ed13537  
mercurial-2.6.2-6.el7_2.src.rpm



-- 
Johnny Hughes
CentOS Project { http://www.centos.org/ }
irc: hughesjr, #cen...@irc.freenode.net
Twitter: @JohnnyCentOS



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Re: [CentOS] Centos 6.7: kernel: EDAC MC0: CE row 2, channel 1, label "": (..... (Correctable Patrol Data ECC))

[Dario Lesca]

Il giorno mar, 03/05/2016 alle 12.15 +0200, Dario Lesca ha scritto:
> After update from centos 6.6 to centos 6.7 and reboot it, I have get
> a
> lot of this error into /var/log/messages:
> 
> > 
> > May  3 11:27:20 s-virt kernel: EDAC MC0: CE row 2, channel 1, label
> > "": (Branch=0 DRAM-Bank=2 RDWR=Read RAS=6093 CAS=896, CE
> > Err=0x1
> > (Correctable Patrol Data ECC))
> ...
> 
> What is the problem signaled into log?
> 
> What I must to do ?
> 
> Many thanks for your help.

I have found this suggest:
> 
> 
> As per logs, you are getting CE (Corrected Error) messages in the
> system. Ans you can ignore them, Edit grub.conf and add
> mce=dont_log_ce to the kernel line which will stop corrected error
> messages to log in file.
> 
> But it always good to run memory check in the system.
http://serverfault.com/questions/531110/var-log-messages-showing-lots-of-ce-err-0x2000-even-on-unused-banks-slots

Add mce=dont_log_ce to grub.conf imply a reboot.

It's possible to stop log message without reboot?

Thanks
-- 
Dario Lesca
(inviato dal mio Linux Fedora 23 Workstation)

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Re: [CentOS] Centos 6.7: kernel: EDAC MC0: CE row 2, channel 1, label "": (..... (Correctable Patrol Data ECC))

[Michael Schumacher]

Tuesday, May 3, 2016, 12:15:21 PM, you wrote:

DL> After update from centos 6.6 to centos 6.7 and reboot it, I have get a
DL> lot of this error into /var/log/messages:

>> May  3 11:27:20 s-virt kernel: EDAC MC0: CE row 2, channel 1, label
>> "": (Branch=0 DRAM-Bank=2 RDWR=Read RAS=6093 CAS=896, CE Err=0x1
>> (Correctable Patrol Data ECC))

Hi Dario,

I had a similar case in the past.

I had a brand new server that seemed to be running fine. After a
kernel update, I gor lot of error messages in /etc/messages.

That particular kernel update implemented additional error messages
that were related to the motherboard chipset. It appears that new
boards with new chipset run fine with existing kernel.
As soon as kernel updates incorporate special features of these
chipsets, you might get such messages.

I returned the board under warranty. The board manufacturer informed
me that a memory controller was faulty. The board had the hardware
error from the beginning. The new kernel only revealed an already
existing problem.

You may want to check first if the hardware problem comes from memory
or motherboard.

best regards
---
Michael Schumacher

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[CentOS] Copying a live system

[Timothy Murphy]

I want to backup my current CentOS-7.2 system to another drive.
Is it safe to copy the system while it is running?
Eg by
mount /dev/sdb5 /mnt
rsync -HPaxvz /. /mnt/
I've found contradictory advice on the web.

-- 
Timothy Murphy  
gayleard /at/ eircom.net
School of Mathematics, Trinity College, Dublin


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Re: [CentOS] Copying a live system

[m . roth]

Timothy Murphy wrote:
> I want to backup my current CentOS-7.2 system to another drive.
> Is it safe to copy the system while it is running?
> Eg by
> mount /dev/sdb5 /mnt
> rsync -HPaxvz /. /mnt/
> I've found contradictory advice on the web.

Yes. When we're cloning a system, such as a compute node in a cluster, or
rsync upgrading, we
rsync -HPavxz /. newmachine:/new/.
rsync -HPavxz /boot/. newmachine:/boot//new/.

As long as you're not copying /sys or /proc

 mark

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Re: [CentOS] Copying a live system

[m . roth]

Timothy Murphy wrote:
> I want to backup my current CentOS-7.2 system to another drive.
> Is it safe to copy the system while it is running?
> Eg by
> mount /dev/sdb5 /mnt
> rsync -HPaxvz /. /mnt/
> I've found contradictory advice on the web.

Oh, I hit  before I added several more things:

First, correct the MAC address in
/etc/udev/rules.d/70-persistant-net.rules (or it might be 60), and in
/etc/sysconfig/network-scripts for ifcfg-

Second, you'll need a new /etc/ssh/sshd-host-*

If you're getting your name & IP (and IPv6) from DHCP, don't forget to
update the DHPCD server.


Finally, this works if the system is identical hardware. If not, before
you try to boot, boot from linux rescue, then you need to
chroot /mnt/sysimage

cd /lib/modules

VER=$(ls -rt1 | tail -1)
echo $VER

mkinitrd X $VER
mv X /boot/initrd-$VER.img

At that point, you should be good to go.

   mark

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Re: [CentOS] Copying a live system

[Leon Fauster]

Am 03.05.2016 um 15:55 schrieb Timothy Murphy :
> I want to backup my current CentOS-7.2 system to another drive.
> Is it safe to copy the system while it is running?
> Eg by
> mount /dev/sdb5 /mnt
> rsync -HPaxvz /. /mnt/
> I've found contradictory advice on the web.



It depends, the running services should answer ... for a mysqld running system:

Delete the -x option above and add

--exclude /proc --exclude /sys --exclude /mnt --exclude /var/lib/mysql  

and then 

mysqldump --add-drop-table -c --create-options -x -u root -p -A > 
mysqldump-$(date +%s).sql

for example ...

--
LF





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Re: [CentOS] C6 Firefox 45.1 segmentation faults

[Akemi Yagi]

On Tue, May 3, 2016 at 12:11 AM, Nux!  wrote:

> - Original Message -
>> From: "Akemi Yagi" 
>> To: "CentOS mailing list" 
>> Sent: Tuesday, 3 May, 2016 01:32:55
>> Subject: Re: [CentOS] C6 Firefox 45.1 segmentation faults
>
>> On Mon, May 2, 2016 at 5:07 PM, Akemi Yagi  wrote:

>>> Indeed, it worked. Now need to test this thing ...
>>
>> With my short test, so far, so good. No crash with the site that used
>> to bomb out.
>>
>> I needed the latest version of soxr(-devel) and xvidcore(-devel) from
>> PUIAS to run (build) ffmpeg-2.1.1-1.sdl6. All other dependencies were
>> available from EPEL and nux.
>>
>> Akemi

> Morning,
>
> Thanks for testing Akemi, I'll work towards upgrading ffmpeg then and the 
> deps. Will be fun. :-)
>
> Nux!
> www.nux.ro

To add to your fun, let me present my wish list:

mplayer-gui and libquicktime (latest version from PUIAS) and
mlt >= 0.9.4

Thanks!
Akemi
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Re: [CentOS] C6 Firefox 45.1 segmentation faults

[m . roth]

Akemi Yagi wrote:
> On Tue, May 3, 2016 at 12:11 AM, Nux!  wrote:
>
>> - Original Message -
>>> From: "Akemi Yagi" 
>>> To: "CentOS mailing list" 
>>> Sent: Tuesday, 3 May, 2016 01:32:55
>>> Subject: Re: [CentOS] C6 Firefox 45.1 segmentation faults
>>
>>> On Mon, May 2, 2016 at 5:07 PM, Akemi Yagi  wrote:
>
 Indeed, it worked. Now need to test this thing ...
>>>
>>> With my short test, so far, so good. No crash with the site that used
>>> to bomb out.
>>>
>>> I needed the latest version of soxr(-devel) and xvidcore(-devel) from
>>> PUIAS to run (build) ffmpeg-2.1.1-1.sdl6. All other dependencies were
>>> available from EPEL and nux.
>>>
>>> Akemi
>
>> Morning,
>>
>> Thanks for testing Akemi, I'll work towards upgrading ffmpeg then and
>> the deps. Will be fun. :-)
>>
>> Nux!
>> www.nux.ro
>
> To add to your fun, let me present my wish list:
>
> mplayer-gui and libquicktime (latest version from PUIAS) and
> mlt >= 0.9.4
>
Ummm, NO. NOT the latter, under any circumstance... or hadn't you missed
the huge announcements that Apple would no longer support quicktime, and
every organization, at least here in the States, and all the trade press,
are saying uninstall quicktime yesterday!!!

And yes, we have been told to make it go away here at work... and I work
for a US federal gov't agency (civilian sector).

mark

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Re: [CentOS] C6 Firefox 45.1 segmentation faults

[Akemi Yagi]

On Tue, May 3, 2016 at 9:34 AM,   wrote:
> Akemi Yagi wrote:

>> To add to your fun, let me present my wish list:
>>
>> mplayer-gui and libquicktime (latest version from PUIAS) and
>> mlt >= 0.9.4
>>
> Ummm, NO. NOT the latter, under any circumstance... or hadn't you missed
> the huge announcements that Apple would no longer support quicktime, and
> every organization, at least here in the States, and all the trade press,
> are saying uninstall quicktime yesterday!!!
>
> And yes, we have been told to make it go away here at work... and I work
> for a US federal gov't agency (civilian sector).
>
> mark

I hope this is your misunderstanding, Mark. I am talking about
libquicktime from:

http://libquicktime.sourceforge.net/

Not Apple's quicktime.

As seen in http://libquicktime.sourceforge.net/introduction.html,
"libquicktime is in no way related to the original quicktime software,
which can be found here (http://quicktime.apple.com/)".

Akemi
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Re: [CentOS] C6 Firefox 45.1 segmentation faults

[m . roth]

Akemi Yagi wrote:
> On Tue, May 3, 2016 at 9:34 AM,   wrote:
>> Akemi Yagi wrote:
>
>>> To add to your fun, let me present my wish list:
>>>
>>> mplayer-gui and libquicktime (latest version from PUIAS) and
>>> mlt >= 0.9.4
>>>
>> Ummm, NO. NOT the latter, under any circumstance... or hadn't you missed
>> the huge announcements that Apple would no longer support quicktime, and
>> every organization, at least here in the States, and all the trade
>> press, are saying uninstall quicktime yesterday!!!
>
> I hope this is your misunderstanding, Mark. I am talking about
> libquicktime from:
>
> http://libquicktime.sourceforge.net/
>
> Not Apple's quicktime.
>
> As seen in http://libquicktime.sourceforge.net/introduction.html,
> "libquicktime is in no way related to the original quicktime software,
> which can be found here (http://quicktime.apple.com/)".
>
I understood that it's not Apples (I wouldn't expect them to release an
rpm for us); however, I don't know that the team building libquicktime is
going to continue to upgrade and enhance, now that Apple's ended all
support for it, and everyone's being pushed, at least in all
organizations, to get rid of it, or if they might wind down the project;
that is why I was emphatic about not wanting it.

  mark

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Re: [CentOS] C6 Firefox 45.1 segmentation faults

[Nux!]

Akemi,

Noted, thanks. I am trying to rebuild all packages which require ffmpeg. 
Already hit problems with gstreamer-ffmpeg, had to give up and resort to using 
its internal ffmpeg.

I'll let you guys know when stuff is ready so we can test.

--
Sent from the Delta quadrant using Borg technology!

Nux!
www.nux.ro

- Original Message -
> From: "Akemi Yagi" 
> To: "CentOS mailing list" 
> Sent: Tuesday, 3 May, 2016 17:22:16
> Subject: Re: [CentOS] C6 Firefox 45.1 segmentation faults

> On Tue, May 3, 2016 at 12:11 AM, Nux!  wrote:
> 
>> - Original Message -
>>> From: "Akemi Yagi" 
>>> To: "CentOS mailing list" 
>>> Sent: Tuesday, 3 May, 2016 01:32:55
>>> Subject: Re: [CentOS] C6 Firefox 45.1 segmentation faults
>>
>>> On Mon, May 2, 2016 at 5:07 PM, Akemi Yagi  wrote:
> 
 Indeed, it worked. Now need to test this thing ...
>>>
>>> With my short test, so far, so good. No crash with the site that used
>>> to bomb out.
>>>
>>> I needed the latest version of soxr(-devel) and xvidcore(-devel) from
>>> PUIAS to run (build) ffmpeg-2.1.1-1.sdl6. All other dependencies were
>>> available from EPEL and nux.
>>>
>>> Akemi
> 
>> Morning,
>>
>> Thanks for testing Akemi, I'll work towards upgrading ffmpeg then and the 
>> deps.
>> Will be fun. :-)
>>
>> Nux!
>> www.nux.ro
> 
> To add to your fun, let me present my wish list:
> 
> mplayer-gui and libquicktime (latest version from PUIAS) and
> mlt >= 0.9.4
> 
> Thanks!
> Akemi
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Re: [CentOS] Copying a live system

[Timothy Murphy]

m.r...@5-cent.us wrote:

>> I want to backup my current CentOS-7.2 system to another drive.
>> Is it safe to copy the system while it is running?
>> Eg by
>> mount /dev/sdb5 /mnt
>> rsync -HPaxvz /. /mnt/
>> I've found contradictory advice on the web.
> 
> Yes. When we're cloning a system, such as a compute node in a cluster, or
> rsync upgrading, we
> rsync -HPavxz /. newmachine:/new/.
> rsync -HPavxz /boot/. newmachine:/boot//new/.

Thanks very much to you, and all who responded to my query.


-- 
Timothy Murphy  
gayleard /at/ eircom.net
School of Mathematics, Trinity College, Dublin


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Re: [CentOS] systemd-journald corruption

[Chris Murphy]

On Fri, Apr 29, 2016 at 6:26 AM, Chris Adams  wrote:
> Once upon a time, Chris Adams  said:
>> So far, turning off the compression appears to have worked (but I'll
>> have to watch it for a day or two to really see).
>
> Just to follow up: turning off journald compression does appear to have
> fixed the corruption problem I was seeing.  I'll watch for an updated
> systemd package.

Does journalctl --verify no longer complain of corruption? Or is it
possible there's corruption but journalctl and rsyslogd now tolerate
it somehow?


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Re: [CentOS] Copying a live system

[Chris Murphy]

Anaconda live installs use this:

rsync -pogAXtlHrDx --exclude /dev/ --exclude /proc/ --exclude /sys/
--exclude /run/ --exclude /boot/*rescue* --exclude /etc/machine-id
/run/install/source/ /mnt/sysimage


Chris Murphy
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[CentOS] Inconsistancy in RAID documentation

[m . roth]

On the wiki page for creating a mirrored root drive, at
, it first
tells you, in the install, to chose manual partitioning, and to leave at
least 1M at the end of the drive and then it tells you to create the
RAID 1 using /dev/sda and /dev/sdb - the *whole* raw drives.

 mark, currently creating a RAID 1 using just the raw drives, no
partitions

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Re: [CentOS] Copying a live system

[m . roth]

Chris Murphy wrote:
> Anaconda live installs use this:
>
> rsync -pogAXtlHrDx --exclude /dev/ --exclude /proc/ --exclude /sys/
> --exclude /run/ --exclude /boot/*rescue* --exclude /etc/machine-id
> /run/install/source/ /mnt/sysimage
>
Oh. Yeah. DEFINITELY --exclude /var/log/lastlog

  mark

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[CentOS] ImageMagick security alert

[Alice Wonder]

https://imagetragick.com/

As CentOS is often used for web servers, I thought this should be posted 
here.


Bug in ImageMagick allows remote exploit.

AFAIK no patch exists yet but defense against the exploit is detailed at 
the link.


CVE-2016–3714
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[CentOS] c6, drbd and file systems

[John R Pierce]

I have a pair of centos 6 systems, with a rather large raid thats DRBD 
replicated from box 1 to box 2... box 1 mounts this as /data


when box 1 reboots, /data doesn't get mounted, but the drbd replication 
starts up just fine.   the entry in fstab is...


/dev/drbd0  /data   xfs inode64 1 0

once the system is booted up, if I `mount /data`, it mounts just fine.

I'm not using any sort of heartbeat or other HA management software, if 
box 1 fails, I'll manually configure box2 to take over after physically 
disabling box1 so it can't wake up a zombie.




--
john r pierce, recycling bits in santa cruz

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Re: [CentOS] c6, drbd and file systems

[Clint Dilks]

On Wed, May 4, 2016 at 9:41 AM, John R Pierce  wrote:

> I have a pair of centos 6 systems, with a rather large raid thats DRBD
> replicated from box 1 to box 2... box 1 mounts this as /data
>
> when box 1 reboots, /data doesn't get mounted, but the drbd replication
> starts up just fine.   the entry in fstab is...
>
> /dev/drbd0  /data   xfs inode64 1 0
>
> once the system is booted up, if I `mount /data`, it mounts just fine.
>
> I'm not using any sort of heartbeat or other HA management software, if
> box 1 fails, I'll manually configure box2 to take over after physically
> disabling box1 so it can't wake up a zombie.
>
>

Hi,

Are you using SE Linux?  If so does the context for /dev/drbd0 match on
both systems ?





>
>
> --
> john r pierce, recycling bits in santa cruz
>
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Re: [CentOS] c6, drbd and file systems

[John R Pierce]

On 5/3/2016 2:52 PM, Clint Dilks wrote:

Are you using SE Linux?  If so does the context for /dev/drbd0 match on
both systems ?


afaik, this has nothing to do with the drbd slave. I reboot the 
master, replication resumes just fine, but the /data filesystem doesn't 
get automounted til I manually mount it.




--
john r pierce, recycling bits in santa cruz

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Re: [CentOS] Inconsistancy in RAID documentation

[Arun Khan]

On Tue, May 3, 2016 at 12:49 PM,   wrote:
> On the wiki page for creating a mirrored root drive, at
> , it first

Way back in 2012, I had some problems with partition-able RAID1, when
one of the disks is missing.


A client's ERP system would not boot because one of the disks had gone bad.

A search "partitionable raid 1 site:lists.centos.org" also throws up
other discussions on partition-able RAID1"

Indeed the problem may have been fixed but I have not done any
partition-able RAID1 since 2012.

-- Arun Khan
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