Re: unable to cut a DVD from iso

[g]

On 12/07/2011 04:14 AM, Todd And Margo Chester wrote:
> On 12/06/2011 06:33 PM, g wrote:
>> in addition, as a note of curiousness, do you have k3b configed to open
>> cd/dvd drawer?
>
> yes.
---

i guess i could/should have gone ahead and mentioned why i was asking,
but i had other things run thru the head at time.

ria, i have not had k3b crash, but i have had an early v/r lock up when
it opened and closed tray. disabling ended lock up.


another bit of curiousness, at what point during verify does k3b crash?


k3b has their own site;

  http://www.k3b.org

which is mainly for announcing releases, fixes, downloads, and a faq;

  http://k3b.plainblack.com/faq

while their forum is at;

  http://forum.kde.org/viewforum.php?f=153

where you may/should find a solution for problem you are having.


command line is faster way for burning .iso files and file paths, but
not as easy as k3b when you have a bunch of scattered files to burn.
[that is when arguments are passed correctly. ;-) ]


hth.
-- 

peace out.

tc.hago,

g
.

*please reply "plain text" only. "html text" are deleted*


in a free world without fences, who needs gates.
**
help microsoft stamp out piracy - give linux to a friend today.
**
to mess up a linux box, you need to work at it.
to mess up an ms windows box, you just need to *look* at it.
**
The installation instructions stated to install Windows 2000 or better.
So I installed Linux.
**
learn linux:
'Rute User's Tutorial and Exposition' http://rute.2038bug.com/index.html
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'LDP HOWTO-index' http://www.tldp.org/HOWTO/HOWTO-INDEX/index.html
'HowtoForge' http://howtoforge.com/




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Re: unable to cut a DVD from iso

[Todd And Margo Chester]

On 12/06/2011 06:33 PM, g wrote:


in addition, as a note of curiousness, do you have k3b configed to open
cd/dvd drawer?


yes.

Re: Is the a SL 6.2 beta out there?

[zxq9]

On 12/07/2011 11:37 AM, Yasha Karant wrote:

On 12/06/2011 03:19 PM, Connie Sieh wrote:

On Tue, 6 Dec 2011, Todd And Margo Chester wrote:


Hi All,

Is there a SL 6.2 bet out there yet? If so,
do you know where?


No. We are fast but not that fast:-) RHEL 6.2 was released today.

-Connie Sieh


Many thanks,
-T



When SL 6.2 goes to production status, presumably 6x will then be 6.2 .
Where will this change be announced? To this list?

Yasha Karant


To the Scientific-Linux-Announce mailinglist, perhaps?
http://listserv.fnal.gov/archives/scientific-linux-announce.html

Re: Is the a SL 6.2 beta out there?

[Yasha Karant]

On 12/06/2011 03:19 PM, Connie Sieh wrote:

On Tue, 6 Dec 2011, Todd And Margo Chester wrote:


Hi All,

Is there a SL 6.2 bet out there yet? If so,
do you know where?


No. We are fast but not that fast:-) RHEL 6.2 was released today.

-Connie Sieh


Many thanks,
-T



When SL 6.2 goes to production status, presumably 6x will then be 6.2 . 
 Where will this change be announced?  To this list?


Yasha Karant

Re: unable to cut a DVD from iso

[g]

On 12/07/2011 01:31 AM, Todd And Margo Chester wrote:
<>

> It was not coughing on my "=" sign.  It was coughing on on the
> lack on dashes in -dvd-compat and -allow-limited-size
> 
> -dvd-compat  <> --dvd-compat
> -allow-limited-size <> --allow-limited-size
> 
> growisofs did not like the bad commands, so it sent them
> to mkisofs to see it mkisofs likes them any better.
> What terrible error handling!
> 
> 
> growisofs --dvd-compat \
> -Z /dev/sr0=./SL-61-x86_64-2011-07-27-Everything-DVD1.iso
---

now that is interesting, because;

while you and jdow where chatting, i decided to burn a .iso to
a dvd-r/w with k3b;

 ]$ k3b -version
 Qt: 3.3.6
 KDE: 3.5.4-26.el5_7.1 Red Hat
 K3b: 0.12.17
 ]$

and look at the debugging info to see what k3b showed for command line;

+++
growisofs command:
---
/usr/bin/growisofs -Z /dev/hdd=/hd/b/06/pmagic/pmagic.iso \
-use-the-force-luke=notray -use-the-force-luke=tty -dvd-compat \
-speed=4 -overburn -use-the-force-luke=bufsize:8m
+++

as you can see, '-dvd-compat', not '--dvd-compat'


 ]$ growisofs --help
 * growisofs by , version 7.0,
 - usage: growisofs [-dvd-compat] [-overburn] [-speed=1] \
  -[ZM] /dev/dvd 
   for  see 'mkisofs -help'
 ]$ mkisofs -version
 mkisofs 2.01 (cpu-pc-linux-gnu)
 ]$

 ]$ uname -a
 Linux 2.6.18-274.12.1.el5 #1 SMP Tue Nov 29 11:20:34 EST  2011
 i686 i686 i386 GNU/Linux
 ]$


> #  md5sum ./SL-61-x86_64-2011-07-27-Everything-DVD2.iso /dev/sr0
> 32cce790ae5eb3f435a7898431740544 
> ./SL-61-x86_64-2011-07-27-Everything-DVD2.iso
> 4fd4dfa15d7c9bb5f29eace90611e116  /dev/sr0
> 
> Still a bad md5sum.
> 
> But, I ran the self check and this time Disk 1 both boots
> and passes self check.  Joy!
___

that is what counts.

as mentioned before, failing md5sum is not an indication of a bad burn.


> Thank you all for your patience and your tips!
---

welcome.

glad to see you are now able to boot, now to install.


in addition, as a note of curiousness, do you have k3b configed to open
cd/dvd drawer?

ria, this was once a problem and could cause crashes during check. if
so, disable to see what happens.


-- 

peace out.

tc.hago,

g
.

*please reply "plain text" only. "html text" are deleted*


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**
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**
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to mess up an ms windows box, you just need to *look* at it.
**
The installation instructions stated to install Windows 2000 or better.
So I installed Linux.
**
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Re: unable to cut a DVD from iso

[jdow]

On 2011/12/06 16:54, Todd And Margo Chester wrote:

On 12/06/2011 04:50 PM, jdow wrote:

On 2011/12/06 16:38, Todd And Margo Chester wrote:

On 12/06/2011 04:29 PM, jdow wrote:

On 2011/12/06 14:37, Todd And Margo Chester wrote:

On 12/06/2011 02:09 PM, Andrew Z wrote:


On Tue, Dec 6, 2011 at 4:13 PM, Todd And Margo Chester
mailto:toddandma...@gmail.com>> wrote:

On Tue, Dec 6, 2011 at 3:40 PM, Todd And Margo Chester
mailto:toddandma...@gmail.com>
__>> wrote:
growisofs -dvd-compat -Z /dev/sr0
./SL-61-x86_64-2011-07-27-__Everything-DVD2.iso


Syntax:
growisofs -dvd-compat -Z /dev/dvd=image.iso

Change your command to:
growisofs -dvd-compat -Z
/dev/sr0=./SL-61-x86_64-2011-07-27-__Everything-DVD2.iso

(Add the = sign.)

The above is the burn an ISO example from the man file for growisofs.

{^_^}



# growisofs -dvd-compat -allow-limited-size -Z \
/dev/sr0=SL-61-x86_64-2011-07-27-Everything-DVD1.iso

growisofs: no mkisofs options are permitted with =, aborting...


mumble, mumble ...


Let's try a "naw, it can't be!"

Try escaping all the hyphens in the name or simply renaming it to image.iso
and see what happens.

When doing it "right" doesn't work, try asinine solutions. The question
this
will answer is whether "growisofs" interprets the hyphens to mean mkisofs
options are present.

{o.o}



# mv SL-61-x86_64-2011-07-27-Everything-DVD1.iso x.iso

# growisofs --dry-run -dvd-compat -allow-limited-size -Z /dev/sr0=x.iso
growisofs: no mkisofs options are permitted with =, aborting...

naw mumble, it mumble can't mumble be mumble [explicative deleted]!



Hm, TUV, bugreport, filed, one each?

But TUV about it. It sounds like the man page does not match reality.

Lemme see, I am using SL6.1. The growisofs tool is version 7.1. Not feeling
like wasting a DVD or CDROM I simply tried the command with no disk in the
drive.

growisofs -dvd-compat -Z /dev/sr0=image.iso   (With an appropriate file.)

It trundled for a few moments then complained:
:-( /dev/sr0: media is not recognized as recordable DVD: 0

growisofs is found at /usr/bin/growisofs and is seen as:
-rwxr-xr-x. 1 root root 93952 Nov 22  2010 /usr/bin/growisofs

I ran it as root for write privileges.

{^_^}

Re: unable to cut a DVD from iso

[Todd And Margo Chester]

On 12/06/2011 04:54 PM, Todd And Margo Chester wrote:

On 12/06/2011 04:50 PM, jdow wrote:

On 2011/12/06 16:38, Todd And Margo Chester wrote:

On 12/06/2011 04:29 PM, jdow wrote:

On 2011/12/06 14:37, Todd And Margo Chester wrote:

On 12/06/2011 02:09 PM, Andrew Z wrote:


On Tue, Dec 6, 2011 at 4:13 PM, Todd And Margo Chester
mailto:toddandma...@gmail.com>> wrote:

On Tue, Dec 6, 2011 at 3:40 PM, Todd And Margo Chester
mailto:toddandma...@gmail.com>
__>> wrote:
growisofs -dvd-compat -Z /dev/sr0
./SL-61-x86_64-2011-07-27-__Everything-DVD2.iso


Syntax:
growisofs -dvd-compat -Z /dev/dvd=image.iso

Change your command to:
growisofs -dvd-compat -Z
/dev/sr0=./SL-61-x86_64-2011-07-27-__Everything-DVD2.iso

(Add the = sign.)

The above is the burn an ISO example from the man file for growisofs.

{^_^}



# growisofs -dvd-compat -allow-limited-size -Z \
/dev/sr0=SL-61-x86_64-2011-07-27-Everything-DVD1.iso

growisofs: no mkisofs options are permitted with =, aborting...


mumble, mumble ...


Let's try a "naw, it can't be!"

Try escaping all the hyphens in the name or simply renaming it to
image.iso
and see what happens.

When doing it "right" doesn't work, try asinine solutions. The question
this
will answer is whether "growisofs" interprets the hyphens to mean mkisofs
options are present.

{o.o}



# mv SL-61-x86_64-2011-07-27-Everything-DVD1.iso x.iso

# growisofs --dry-run -dvd-compat -allow-limited-size -Z /dev/sr0=x.iso
growisofs: no mkisofs options are permitted with =, aborting...

naw mumble, it mumble can't mumble be mumble [explicative deleted]!



It was not coughing on my "=" sign.  It was coughing on on the
lack on dashes in -dvd-compat and -allow-limited-size

-dvd-compat  <> --dvd-compat
-allow-limited-size <> --allow-limited-size

growisofs did not like the bad commands, so it sent them
to mkisofs to see it mkisofs likes them any better.
What terrible error handling!


growisofs --dvd-compat \
-Z /dev/sr0=./SL-61-x86_64-2011-07-27-Everything-DVD1.iso



#  md5sum ./SL-61-x86_64-2011-07-27-Everything-DVD2.iso /dev/sr0
32cce790ae5eb3f435a7898431740544 
./SL-61-x86_64-2011-07-27-Everything-DVD2.iso

4fd4dfa15d7c9bb5f29eace90611e116  /dev/sr0

Still a bad md5sum.

But, I ran the self check and this time Disk 1 both boots
and passes self check.  Joy!

Thank you all for your patience and your tips!

-T

Re: unable to cut a DVD from iso

[Todd And Margo Chester]

On 12/06/2011 04:50 PM, jdow wrote:

On 2011/12/06 16:38, Todd And Margo Chester wrote:

On 12/06/2011 04:29 PM, jdow wrote:

On 2011/12/06 14:37, Todd And Margo Chester wrote:

On 12/06/2011 02:09 PM, Andrew Z wrote:


On Tue, Dec 6, 2011 at 4:13 PM, Todd And Margo Chester
mailto:toddandma...@gmail.com>> wrote:

On Tue, Dec 6, 2011 at 3:40 PM, Todd And Margo Chester
mailto:toddandma...@gmail.com>
__>> wrote:
growisofs -dvd-compat -Z /dev/sr0
./SL-61-x86_64-2011-07-27-__Everything-DVD2.iso


Syntax:
growisofs -dvd-compat -Z /dev/dvd=image.iso

Change your command to:
growisofs -dvd-compat -Z
/dev/sr0=./SL-61-x86_64-2011-07-27-__Everything-DVD2.iso

(Add the = sign.)

The above is the burn an ISO example from the man file for growisofs.

{^_^}



# growisofs -dvd-compat -allow-limited-size -Z \
/dev/sr0=SL-61-x86_64-2011-07-27-Everything-DVD1.iso

growisofs: no mkisofs options are permitted with =, aborting...


mumble, mumble ...


Let's try a "naw, it can't be!"

Try escaping all the hyphens in the name or simply renaming it to image.iso
and see what happens.

When doing it "right" doesn't work, try asinine solutions. The question
this
will answer is whether "growisofs" interprets the hyphens to mean mkisofs
options are present.

{o.o}



# mv SL-61-x86_64-2011-07-27-Everything-DVD1.iso x.iso

# growisofs --dry-run -dvd-compat -allow-limited-size -Z /dev/sr0=x.iso
growisofs: no mkisofs options are permitted with =, aborting...

naw mumble, it mumble can't mumble be mumble [explicative deleted]!

Re: unable to cut a DVD from iso

[jdow]

On 2011/12/06 16:38, Todd And Margo Chester wrote:

On 12/06/2011 04:29 PM, jdow wrote:

On 2011/12/06 14:37, Todd And Margo Chester wrote:

On 12/06/2011 02:09 PM, Andrew Z wrote:


On Tue, Dec 6, 2011 at 4:13 PM, Todd And Margo Chester
mailto:toddandma...@gmail.com>> wrote:

On Tue, Dec 6, 2011 at 3:40 PM, Todd And Margo Chester
mailto:toddandma...@gmail.com>
__>> wrote:
growisofs -dvd-compat -Z /dev/sr0
./SL-61-x86_64-2011-07-27-__Everything-DVD2.iso


Syntax:
growisofs -dvd-compat -Z /dev/dvd=image.iso

Change your command to:
growisofs -dvd-compat -Z
/dev/sr0=./SL-61-x86_64-2011-07-27-__Everything-DVD2.iso

(Add the = sign.)

The above is the burn an ISO example from the man file for growisofs.

{^_^}



# growisofs -dvd-compat -allow-limited-size -Z \
/dev/sr0=SL-61-x86_64-2011-07-27-Everything-DVD1.iso

growisofs: no mkisofs options are permitted with =, aborting...


mumble, mumble ...


Let's try a "naw, it can't be!"

Try escaping all the hyphens in the name or simply renaming it to image.iso
and see what happens.

When doing it "right" doesn't work, try asinine solutions. The question this
will answer is whether "growisofs" interprets the hyphens to mean mkisofs
options are present.

{o.o}

Re: unable to cut a DVD from iso

[Todd And Margo Chester]

On 12/06/2011 04:29 PM, jdow wrote:

On 2011/12/06 14:37, Todd And Margo Chester wrote:

On 12/06/2011 02:09 PM, Andrew Z wrote:


On Tue, Dec 6, 2011 at 4:13 PM, Todd And Margo Chester
mailto:toddandma...@gmail.com>> wrote:

On Tue, Dec 6, 2011 at 3:40 PM, Todd And Margo Chester
mailto:toddandma...@gmail.com>
__>> wrote:
growisofs -dvd-compat -Z /dev/sr0
./SL-61-x86_64-2011-07-27-__Everything-DVD2.iso


Syntax:
growisofs -dvd-compat -Z /dev/dvd=image.iso

Change your command to:
growisofs -dvd-compat -Z
/dev/sr0=./SL-61-x86_64-2011-07-27-__Everything-DVD2.iso

(Add the = sign.)

The above is the burn an ISO example from the man file for growisofs.

{^_^}



 # growisofs -dvd-compat -allow-limited-size -Z \
 /dev/sr0=SL-61-x86_64-2011-07-27-Everything-DVD1.iso

 growisofs: no mkisofs options are permitted with =, aborting...


mumble, mumble ...

Re: unable to cut a DVD from iso

[jdow]

On 2011/12/06 14:37, Todd And Margo Chester wrote:

On 12/06/2011 02:09 PM, Andrew Z wrote:


On Tue, Dec 6, 2011 at 4:13 PM, Todd And Margo Chester
mailto:toddandma...@gmail.com>> wrote:

On Tue, Dec 6, 2011 at 3:40 PM, Todd And Margo Chester
mailto:toddandma...@gmail.com>
__>> wrote:
growisofs -dvd-compat -Z /dev/sr0 
./SL-61-x86_64-2011-07-27-__Everything-DVD2.iso


Syntax:
growisofs -dvd-compat -Z /dev/dvd=image.iso

Change your command to:
growisofs -dvd-compat -Z 
/dev/sr0=./SL-61-x86_64-2011-07-27-__Everything-DVD2.iso

(Add the = sign.)

The above is the burn an ISO example from the man file for growisofs.

{^_^}

Re: unable to cut a DVD from iso

[Todd And Margo Chester]

On 12/06/2011 03:50 PM, g wrote:

On 12/06/2011 11:26 PM, Todd And Margo Chester wrote:
<>



I am burning the iso file inside the dvd!

---

procedure is to burn an *image*. not the file. ;)



I get a mountable DVD with the iso I just burned inside it!

---

because you are burning file, not image.

even a blank dvd is mountable.

either a blank dvd or a dvd with an image file, or an image burned to
a dvd are mountable.

only a *burned image* is bootable.


I tried booting off of SL61-DVD1.  It would not boot.  So, I could not
do the self check.


if it is *iso file*, it will not boot.



It was from the host.

---

best way.



k3b crashes a lot when trying to do a verify.  So I have always
just used the md5sum above.

---

if k3b is crashing a lot, i would suggest checking logs and contacting
k3b support. k3b crashing a lot is not normal.

i am currently running sl5.5 and have great results with k3b. no crashes
after burning over 20 cd's and dvd's. all have passed k3b's checking after
burning.


Noticed that as well.  I just buy a big pail of DVD+R's and don't
mess with the RW anymore.  The just R's write a lot faster too.



only failures has been with r/w that have been rewritten over about 20 times.
dropping write speed 1 level produces a good burn.




Any idea what is wrong with my growisofs syntax?

Re: unable to cut a DVD from iso

[Todd And Margo Chester]

On 12/06/2011 03:51 PM, Todd And Margo Chester wrote:

On 12/06/2011 03:28 PM, g wrote:

On 12/06/2011 10:37 PM, Todd And Margo Chester wrote:
<>


Look at the md5sum of the contents of the DVD vs the ISO.
There is an iso inside an iso! And the second one is
correct! What the ...

---

iso inside an iso? are you saying that you mounted .iso as a loop
device and saw a .iso file?


Yes, I created a mountable DVD that contained one file: the iso
I was trying to burn. I created a data disk with a copy of
my iso inside it.




or are you saying you looked at contents of dvd and saw a .iso file?

if former, no idea.

if latter, you *copied* .iso file as a file to dvd. you did not 'burn'
the the .iso file.


That is exactly what happened.

Here is my run string. Any idea what I did wrong?

growisofs -dvd-compat -Z /dev/sr0 \
./SL-61-x86_64-2011-07-27-Everything-DVD2.iso



Seems to me I am missing an "=" sign.  But that errors out:

 # growisofs -dvd-compat -allow-limited-size -Z \
/dev/sr0=SL-61-x86_64-2011-07-27-Everything-DVD1.iso

 growisofs: no mkisofs options are permitted with =, aborting...

Re: unable to cut a DVD from iso

[Todd And Margo Chester]

On 12/06/2011 03:28 PM, g wrote:

On 12/06/2011 10:37 PM, Todd And Margo Chester wrote:
<>


Look at the md5sum of the contents of the DVD vs the ISO.
There is an iso inside an iso!  And the second one is
correct!   What the ...

---

iso inside an iso? are you saying that you mounted .iso as a loop
device and saw a .iso file?


Yes, I created a mountable DVD that contained one file: the iso
I was trying to burn.  I created a data disk with a copy of
my iso inside it.




or are you saying you looked at contents of dvd and saw a .iso file?

if former, no idea.

if latter, you *copied* .iso file as a file to dvd. you did not 'burn'
the the .iso file.


That is exactly what happened.

Here is my run string.  Any idea what I did wrong?

growisofs -dvd-compat -Z /dev/sr0  \
  ./SL-61-x86_64-2011-07-27-Everything-DVD2.iso

Many thanks,
-T

Re: unable to cut a DVD from iso

[g]

On 12/06/2011 11:26 PM, Todd And Margo Chester wrote:
<>


> I am burning the iso file inside the dvd!
---

procedure is to burn an *image*. not the file. ;)


> I get a mountable DVD with the iso I just burned inside it!
---

because you are burning file, not image.

even a blank dvd is mountable.

either a blank dvd or a dvd with an image file, or an image burned to
a dvd are mountable.

only a *burned image* is bootable.

> I tried booting off of SL61-DVD1.  It would not boot.  So, I could not
> do the self check.

if it is *iso file*, it will not boot.


> It was from the host.
---

best way.


> k3b crashes a lot when trying to do a verify.  So I have always
> just used the md5sum above.
---

if k3b is crashing a lot, i would suggest checking logs and contacting
k3b support. k3b crashing a lot is not normal.

i am currently running sl5.5 and have great results with k3b. no crashes
after burning over 20 cd's and dvd's. all have passed k3b's checking after
burning.

only failures has been with r/w that have been rewritten over about 20 times.
dropping write speed 1 level produces a good burn.


-- 

peace out.

tc.hago,

g
.

*please reply "plain text" only. "html text" are deleted*


in a free world without fences, who needs gates.
**
help microsoft stamp out piracy - give linux to a friend today.
**
to mess up a linux box, you need to work at it.
to mess up an ms windows box, you just need to *look* at it.
**
The installation instructions stated to install Windows 2000 or better.
So I installed Linux.
**
learn linux:
'Rute User's Tutorial and Exposition' http://rute.2038bug.com/index.html
'The Linux Documentation Project' http://www.tldp.org/
'LDP HOWTO-index' http://www.tldp.org/HOWTO/HOWTO-INDEX/index.html
'HowtoForge' http://howtoforge.com/




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Re: Is the a SL 6.2 beta out there?

[Clint Bowman]

Perhaps a Christmas present?  I'm planning to upgrade the week 
between Christmas and New Years


Clint

--
Clint BowmanINTERNET:   cl...@ecy.wa.gov
Air Quality Modeler INTERNET:   cl...@math.utah.edu
Department of Ecology   VOICE:  (360) 407-6815
PO Box 47600FAX:(360) 407-7534
Olympia, WA 98504-7600


USPS:   PO Box 47600, Olympia, WA 98504-7600
Parcels:300 Desmond Drive, Lacey, WA 98503-1274


On Tue, 6 Dec 2011, Connie Sieh wrote:


On Tue, 6 Dec 2011, Todd And Margo Chester wrote:


 Hi All,

Is there a SL 6.2 bet out there yet?  If so,
 do you know where?


No.  We are fast but not that fast:-) RHEL 6.2 was released today.

-Connie Sieh


 Many thanks,
 -T

Re: Is the a SL 6.2 beta out there?

[Todd And Margo Chester]

On 12/06/2011 03:19 PM, Connie Sieh wrote:

On Tue, 6 Dec 2011, Todd And Margo Chester wrote:


Hi All,

Is there a SL 6.2 bet out there yet? If so,
do you know where?


No. We are fast but not that fast:-) RHEL 6.2 was released today.


Then it will be available tomorrow, right?  (Just funnin' you guys!
Joke! Joke! Joke!)



-Connie Sieh


Many thanks,
-T

Re: unable to cut a DVD from iso

[g]

On 12/06/2011 10:37 PM, Todd And Margo Chester wrote:
<>

> Look at the md5sum of the contents of the DVD vs the ISO.
> There is an iso inside an iso!  And the second one is
> correct!   What the ...
---

iso inside an iso? are you saying that you mounted .iso as a loop
device and saw a .iso file?

or are you saying you looked at contents of dvd and saw a .iso file?

if former, no idea.

if latter, you *copied* .iso file as a file to dvd. you did not 'burn'
the the .iso file.



-- 

peace out.

tc.hago,

g
.

*please reply "plain text" only. "html text" are deleted*


in a free world without fences, who needs gates.
**
help microsoft stamp out piracy - give linux to a friend today.
**
to mess up a linux box, you need to work at it.
to mess up an ms windows box, you just need to *look* at it.
**
The installation instructions stated to install Windows 2000 or better.
So I installed Linux.
**
learn linux:
'Rute User's Tutorial and Exposition' http://rute.2038bug.com/index.html
'The Linux Documentation Project' http://www.tldp.org/
'LDP HOWTO-index' http://www.tldp.org/HOWTO/HOWTO-INDEX/index.html
'HowtoForge' http://howtoforge.com/




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Re: unable to cut a DVD from iso

[Todd And Margo Chester]

On 12/06/2011 03:01 PM, g wrote:

On 12/06/2011 09:55 PM, Todd And Margo Chester wrote:
<>


Would kvm have anything to do with this?

---

i do not use kvm, so i can not offer an answer.



$ sha1sum ./SL-61-x86_64-2011-07-27-Everything-DVD2.iso
0dd829f14bd32be0bb6be5feedfd97062fe45b58
./SL-61-x86_64-2011-07-27-Everything-DVD2.iso

---

which shows you have a good .iso file to burn from.



That is not the problem.  This is the problem:

md5sum source.iso /dev/sr0

---

this i have never tried, tho stands to reason that it should work.

now, as to '*sum' checking a burned cd/dvd, i have never had a good
check.

but, i have had cd/dvd, when booted and 'self check' was run, it return
a good check.

on fedora tsl, this has been attributed to the boot information on cd/dvd
being different from what is in iso file.


I am burning the iso file inside the dvd!  I get a mountable DVD
with the iso I just burned inside it!




do cd/dvd that you have burned have a 'self check', or have you
gotten that far?


I tried booting off of SL61-DVD1.  It would not boot.  So, I could not
do the self check.



in finial thoughts, when you run 'md5sum source.iso /dev/sr0', are you
running that in a 'real' system or are you running it from kvm?


It was from the host.

k3b crashes a lot when trying to do a verify.  So I have always
just used the md5sum above.

Re: Is the a SL 6.2 beta out there?

[Connie Sieh]

On Tue, 6 Dec 2011, Todd And Margo Chester wrote:


Hi All,

   Is there a SL 6.2 bet out there yet?  If so,
do you know where?


No.  We are fast but not that fast:-) RHEL 6.2 was released today.

-Connie Sieh


Many thanks,
-T

Is the a SL 6.2 beta out there?

[Todd And Margo Chester]

Hi All,

   Is there a SL 6.2 bet out there yet?  If so,
do you know where?

Many thanks,
-T

Re: unable to cut a DVD from iso

[g]

On 12/06/2011 09:55 PM, Todd And Margo Chester wrote:
<>

> Would kvm have anything to do with this?
---

i do not use kvm, so i can not offer an answer.


> $ sha1sum ./SL-61-x86_64-2011-07-27-Everything-DVD2.iso
> 0dd829f14bd32be0bb6be5feedfd97062fe45b58 
> ./SL-61-x86_64-2011-07-27-Everything-DVD2.iso
---

which shows you have a good .iso file to burn from.


> That is not the problem.  This is the problem:
> 
>md5sum source.iso /dev/sr0
---

this i have never tried, tho stands to reason that it should work.

now, as to '*sum' checking a burned cd/dvd, i have never had a good
check.

but, i have had cd/dvd, when booted and 'self check' was run, it return
a good check.

on fedora tsl, this has been attributed to the boot information on cd/dvd
being different from what is in iso file.


do cd/dvd that you have burned have a 'self check', or have you
gotten that far?


in finial thoughts, when you run 'md5sum source.iso /dev/sr0', are you
running that in a 'real' system or are you running it from kvm?


-- 

peace out.

tc.hago,

g
.

*please reply "plain text" only. "html text" are deleted*


in a free world without fences, who needs gates.
**
help microsoft stamp out piracy - give linux to a friend today.
**
to mess up a linux box, you need to work at it.
to mess up an ms windows box, you just need to *look* at it.
**
The installation instructions stated to install Windows 2000 or better.
So I installed Linux.
**
learn linux:
'Rute User's Tutorial and Exposition' http://rute.2038bug.com/index.html
'The Linux Documentation Project' http://www.tldp.org/
'LDP HOWTO-index' http://www.tldp.org/HOWTO/HOWTO-INDEX/index.html
'HowtoForge' http://howtoforge.com/




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Description: OpenPGP digital signature

Re: unable to cut a DVD from iso

[Todd And Margo Chester]

On 12/06/2011 02:44 PM, JR van Rensburg wrote:

Ignore my last email then. K3b WAS trying to tell you something then
after all.
At least you found the error.

On Tue, 2011-12-06 at 14:37 -0800, Todd And Margo Chester wrote:

I reburned the second iso.

* Ah! Caramba! *

Look at the md5sum of the contents of the DVD vs the ISO.
There is an iso inside an iso!  And the second one is
correct!   What the .





Anyone know why?  I am at a loss.

Re: unable to cut a DVD from iso

[Todd And Margo Chester]

On 12/06/2011 02:09 PM, Andrew Z wrote:


On Tue, Dec 6, 2011 at 4:13 PM, Todd And Margo Chester
mailto:toddandma...@gmail.com>> wrote:

On Tue, Dec 6, 2011 at 3:40 PM, Todd And Margo Chester
mailto:toddandma...@gmail.com>
__>> wrote:

Hi All,

For some reason, I am unable to cut a DVD from an ISO.
Specifically, I am trying to cut DVDs of the SL61 DVD.

I get bad md5sums when using from both growisofs and k3b.

Just for kicks, I tried to boot off of DVD#1 and my BIOS
won't even recognize it as bootable.

Would kvm have anything to do with this?



On 12/06/2011 12:54 PM, Andrew Z wrote:
 > are you trying to burn a dvd from SL6.1 iso  or you are creating
 > an iso ?


The iso's are already make.  Just trying to cut them.

growisofs -dvd-compat -Z /dev/sr0
./SL-61-x86_64-2011-07-27-__Everything-DVD2.iso


mind to post the exact log ?



I reburned the second iso.

* Ah! Caramba! *

Look at the md5sum of the contents of the DVD vs the ISO.
There is an iso inside an iso!  And the second one is
correct!   What the ...

[editorial comment] AH [/editorial comment]

-T

$ growisofs -dvd-compat -Z /dev/sr0 
./SL-61-x86_64-2011-07-27-Everything-DVD2.iso


Executing 'mkisofs ./SL-61-x86_64-2011-07-27-Everything-DVD2.iso | 
builtin_dd of=/dev/sr0 obs=32k seek=0'

I: -input-charset not specified, using utf-8 (detected in locale settings)
  0.86% done, estimate finish Tue Dec  6 14:21:22 2011
/dev/sr0: "Current Write Speed" is 20.5x1352KBps.
  1.72% done, estimate finish Tue Dec  6 14:36:52 2011
  2.58% done, estimate finish Tue Dec  6 14:32:21 2011
  3.44% done, estimate finish Tue Dec  6 14:30:05 2011
...
 97.05% done, estimate finish Tue Dec  6 14:23:08 2011
 97.91% done, estimate finish Tue Dec  6 14:23:08 2011
 98.76% done, estimate finish Tue Dec  6 14:23:07 2011
 99.62% done, estimate finish Tue Dec  6 14:23:07 2011
Total translation table size: 0
Total rockridge attributes bytes: 0
Total directory bytes: 0
Path table size(bytes): 10
Max brk space used 0
582195 extents written (1137 MB)
builtin_dd: 582208*2KB out @ average 8.1x1352KBps
/dev/sr0: flushing cache
/dev/sr0: closing track
/dev/sr0: closing disc



$ md5sum ./SL-61-x86_64-2011-07-27-Everything-DVD2.iso /dev/sr0
32cce790ae5eb3f435a7898431740544 
./SL-61-x86_64-2011-07-27-Everything-DVD2.iso

fa2ff0e5301e37618729a87b1edd2d23  /dev/sr0


#  mount /dev/sr0 /mnt/cd
mount: block device /dev/sr0 is write-protected, mounting read-only

# ls -al /mnt/cd
total 1164048
dr-xr-xr-x.  1 root root2048 Dec  6 14:21 .
drwxrwsrwx. 11 tony users   4096 Nov 17 21:29 ..
-r-xr-xr-x.  1 root root  1191979008 Jul 27 20:42 sl_61_x8.iso

#  md5sum ./SL-61-x86_64-2011-07-27-Everything-DVD2.iso /mnt/cd/sl_61_x8.iso
32cce790ae5eb3f435a7898431740544 
./SL-61-x86_64-2011-07-27-Everything-DVD2.iso

32cce790ae5eb3f435a7898431740544  /mnt/cd/sl_61_x8.iso

Re: unable to cut a DVD from iso

[Todd And Margo Chester]

On 12/06/2011 02:07 PM, Alan Bartlett wrote:

On 6 December 2011 21:55, Todd And Margo Chester  wrote:


That is not the problem.  This is the problem:

  md5sum source.iso /dev/sr0


Hmm. Purely out of interest, what do you observe by --

mkdir /mnt/{foo1,foo2}
mount -r -t iso9660 /dev/sr0 /mnt/foo1
mount -r -t iso9660 -o loop source.iso /mnt/foo2
diff -r /mnt/foo1 /mnt/foo2

Alan.



I destroyed the bad disks already.

If is helps, I could not boot off the first disk.  And,
I boot of my FC16 Live CD all the time to copy files
to my USB flash drives, so I know my bios boot options
are working correctly.

I wonder is qemu-kvm is doing this?

-T

Re: unable to cut a DVD from iso

[Andrew Z]

On Tue, Dec 6, 2011 at 4:13 PM, Todd And Margo Chester <
toddandma...@gmail.com> wrote:

>  On Tue, Dec 6, 2011 at 3:40 PM, Todd And Margo Chester
>>> mailto:toddandma...@gmail.com**>> wrote:
>>>
>>>Hi All,
>>>
>>>For some reason, I am unable to cut a DVD from an ISO.
>>>Specifically, I am trying to cut DVDs of the SL61 DVD.
>>>
>>>I get bad md5sums when using from both growisofs and k3b.
>>>
>>>Just for kicks, I tried to boot off of DVD#1 and my BIOS
>>>won't even recognize it as bootable.
>>>
>>>Would kvm have anything to do with this?
>>>
>>
>
> On 12/06/2011 12:54 PM, Andrew Z wrote:
> > are you trying to burn a dvd from SL6.1 iso  or you are creating
> > an iso ?
>
>
> The iso's are already make.  Just trying to cut them.
>
> growisofs -dvd-compat -Z /dev/sr0 ./SL-61-x86_64-2011-07-27-**
> Everything-DVD2.iso
>

mind to post the exact log ?

Re: unable to cut a DVD from iso

[Alan Bartlett]

On 6 December 2011 21:55, Todd And Margo Chester  wrote:
>
> That is not the problem.  This is the problem:
>
>      md5sum source.iso /dev/sr0

Hmm. Purely out of interest, what do you observe by --

mkdir /mnt/{foo1,foo2}
mount -r -t iso9660 /dev/sr0 /mnt/foo1
mount -r -t iso9660 -o loop source.iso /mnt/foo2
diff -r /mnt/foo1 /mnt/foo2

Alan.

Re: unable to cut a DVD from iso

[Todd And Margo Chester]

On 12/06/2011 01:43 PM, JR van Rensburg wrote:

On Tue, 2011-12-06 at 13:23 -0800, Todd And Margo Chester wrote:

On Tue, 2011-12-06 at 12:40 -0800, Todd And Margo Chester wrote:

Hi All,

For some reason, I am unable to cut a DVD from an ISO.
Specifically, I am trying to cut DVDs of the SL61 DVD.

I get bad md5sums when using from both growisofs and k3b.


You specifically state here that there is a problem with the checksum.
If you are sure the chesksum is OK then the image is not corrupt.


The image(s) are good.  And, it does not matter if my iso is good
or not, after I burn, both the iso and the disk should match.  If
one is bad, both will be the "same" bad.





k3b won't check the md5sum for me.  k3b crashes when checking with an
error about a bad device.  I used the md5sum command from the command
line to test the new disks.


OK, so the iso is sound.

k3b should be able to check the disc integrity (haven't used it for a
while, but it uses either md5 or checksum.

You say that the error given by k3b is a device error?
if you are using rewritable discs, just try writing any data to the disc
and see if it works.
If you are still getting errors, you do have a device error.
Check the dmesg data to see/get a clue what the problem is. Try:
dmesg>tail


Not the error in dmesg.  I am using DVD+R, 16x

Re: unable to cut a DVD from iso

[Todd And Margo Chester]

On Tue, 6 Dec 2011, Todd And Margo Chester wrote:


On Tue, Dec 6, 2011 at 3:40 PM, Todd And Margo Chester
mailto:toddandma...@gmail.com>> wrote:

Hi All,

For some reason, I am unable to cut a DVD from an ISO.
Specifically, I am trying to cut DVDs of the SL61 DVD.

I get bad md5sums when using from both growisofs and k3b.

Just for kicks, I tried to boot off of DVD#1 and my BIOS
won't even recognize it as bootable.

Would kvm have anything to do with this?



On 12/06/2011 12:54 PM, Andrew Z wrote:

are you trying to burn a dvd from SL6.1 iso or you are creating
an iso ?



The iso's are already make. Just trying to cut them.

growisofs -dvd-compat -Z /dev/sr0
./SL-61-x86_64-2011-07-27-Everything-DVD2.iso






On 12/06/2011 01:36 PM, Steven J. Yellin wrote:
> Does 'sha1sum ./SL-61-x86_64-2011-07-27-Everything-DVD2.iso' return
> 0dd829f14bd32be0bb6be5feedfd97062fe45b58, the checksum given in
> ftp://ftp.scientificlinux.org/linux/scientific/6.1/x86_64/iso/SHA1SUM
> for that file? If so, the file is ok, and if not it isn't.
>
> Steven Yellin

Hi Steven,

$ sha1sum ./SL-61-x86_64-2011-07-27-Everything-DVD2.iso
0dd829f14bd32be0bb6be5feedfd97062fe45b58 
./SL-61-x86_64-2011-07-27-Everything-DVD2.iso


That is not the problem.  This is the problem:

  md5sum source.iso /dev/sr0

-T


>

Re: unable to cut a DVD from iso

[JR van Rensburg]

On Tue, 2011-12-06 at 13:23 -0800, Todd And Margo Chester wrote:
> > On Tue, 2011-12-06 at 12:40 -0800, Todd And Margo Chester wrote:
> >> Hi All,
> >>
> >> For some reason, I am unable to cut a DVD from an ISO.
> >> Specifically, I am trying to cut DVDs of the SL61 DVD.
> >>
> >> I get bad md5sums when using from both growisofs and k3b.

You specifically state here that there is a problem with the checksum.
If you are sure the chesksum is OK then the image is not corrupt.


> k3b won't check the md5sum for me.  k3b crashes when checking with an
> error about a bad device.  I used the md5sum command from the command
> line to test the new disks.

OK, so the iso is sound.

k3b should be able to check the disc integrity (haven't used it for a
while, but it uses either md5 or checksum.

You say that the error given by k3b is a device error?
if you are using rewritable discs, just try writing any data to the disc
and see if it works.
If you are still getting errors, you do have a device error.
Check the dmesg data to see/get a clue what the problem is. Try:
dmesg>tail

Re: unable to cut a DVD from iso

[Steven J. Yellin]

Does 'sha1sum ./SL-61-x86_64-2011-07-27-Everything-DVD2.iso' return
0dd829f14bd32be0bb6be5feedfd97062fe45b58, the checksum given in 
ftp://ftp.scientificlinux.org/linux/scientific/6.1/x86_64/iso/SHA1SUM

for that file?  If so, the file is ok, and if not it isn't.

Steven Yellin

On Tue, 6 Dec 2011, Todd And Margo Chester wrote:


On Tue, Dec 6, 2011 at 3:40 PM, Todd And Margo Chester
mailto:toddandma...@gmail.com>> wrote:

Hi All,

For some reason, I am unable to cut a DVD from an ISO.
Specifically, I am trying to cut DVDs of the SL61 DVD.

I get bad md5sums when using from both growisofs and k3b.

Just for kicks, I tried to boot off of DVD#1 and my BIOS
won't even recognize it as bootable.

Would kvm have anything to do with this?



On 12/06/2011 12:54 PM, Andrew Z wrote:

are you trying to burn a dvd from SL6.1 iso  or you are creating
an iso ?



The iso's are already make.  Just trying to cut them.

growisofs -dvd-compat -Z /dev/sr0 
./SL-61-x86_64-2011-07-27-Everything-DVD2.iso

Re: unable to cut a DVD from iso

[Todd And Margo Chester]

On Tue, 2011-12-06 at 12:40 -0800, Todd And Margo Chester wrote:

Hi All,

For some reason, I am unable to cut a DVD from an ISO.
Specifically, I am trying to cut DVDs of the SL61 DVD.

I get bad md5sums when using from both growisofs and k3b.

Just for kicks, I tried to boot off of DVD#1 and my BIOS
won't even recognize it as bootable.

Would kvm have anything to do with this?

Many thanks,
-T


On 12/06/2011 01:13 PM, JR van Rensburg wrote:

Usually k3b et al are pretty good at checking the iso. If it tells you
there is a problem with the md5sums, then the iso is corrupt.
Try downloading it again or use an ftp client and ask it to resume the
download.


k3b won't check the md5sum for me.  k3b crashes when checking with an
error about a bad device.  I used the md5sum command from the command
line to test the new disks.

I also tried growisofs from the command line with similar results.

Could something in QEMU-KVM be interfering with me?

-T

Re: unable to cut a DVD from iso

[Todd And Margo Chester]

On Tue, Dec 6, 2011 at 3:40 PM, Todd And Margo Chester
mailto:toddandma...@gmail.com>> wrote:

Hi All,

For some reason, I am unable to cut a DVD from an ISO.
Specifically, I am trying to cut DVDs of the SL61 DVD.

I get bad md5sums when using from both growisofs and k3b.

Just for kicks, I tried to boot off of DVD#1 and my BIOS
won't even recognize it as bootable.

Would kvm have anything to do with this?



On 12/06/2011 12:54 PM, Andrew Z wrote:
> are you trying to burn a dvd from SL6.1 iso  or you are creating
> an iso ?


The iso's are already make.  Just trying to cut them.

growisofs -dvd-compat -Z /dev/sr0 
./SL-61-x86_64-2011-07-27-Everything-DVD2.iso

Re: unable to cut a DVD from iso

[JR van Rensburg]

Usually k3b et al are pretty good at checking the iso. If it tells you
there is a problem with the md5sums, then the iso is corrupt.
Try downloading it again or use an ftp client and ask it to resume the
download.

On Tue, 2011-12-06 at 12:40 -0800, Todd And Margo Chester wrote:
> Hi All,
> 
> For some reason, I am unable to cut a DVD from an ISO.
> Specifically, I am trying to cut DVDs of the SL61 DVD.
> 
> I get bad md5sums when using from both growisofs and k3b.
> 
> Just for kicks, I tried to boot off of DVD#1 and my BIOS
> won't even recognize it as bootable.
> 
> Would kvm have anything to do with this?
> 
> Many thanks,
> -T

Re: unable to cut a DVD from iso

[Todd And Margo Chester]

On 12/06/2011 12:40 PM, Todd And Margo Chester wrote:

Hi All,

For some reason, I am unable to cut a DVD from an ISO.
Specifically, I am trying to cut DVDs of the SL61 DVD.

I get bad md5sums when using from both growisofs and k3b.

Just for kicks, I tried to boot off of DVD#1 and my BIOS
won't even recognize it as bootable.

Would kvm have anything to do with this?

Many thanks,
-T





On 12/06/2011 12:52 PM, Yasha Karant wrote:
> Todd,
>
> Did you try Nero Linux? I have had problems with a number of the
> licensed for
> free DVD burning applications supplied with Linux, but none with Nero.
>
> Yasha Karant


Hi Yasha,

Not so far.  I pretty much stopped trying other apps when I discovered
that growisofs also cut bad disks.

I am really suspicious of kvm.  Back when I used Virtual Box (VB), I
noticed that you could not cut anything properly while VB was running.

I asked the guys at kvm if there was a way to temporarily disable
kvm, but they have not gotten back to me.

-T

Re: unable to cut a DVD from iso

[Andrew Z]

are you trying to burn a dvd from SL6.1 iso  or you are creating an iso ?

On Tue, Dec 6, 2011 at 3:40 PM, Todd And Margo Chester <
toddandma...@gmail.com> wrote:

> Hi All,
>
> For some reason, I am unable to cut a DVD from an ISO.
> Specifically, I am trying to cut DVDs of the SL61 DVD.
>
> I get bad md5sums when using from both growisofs and k3b.
>
> Just for kicks, I tried to boot off of DVD#1 and my BIOS
> won't even recognize it as bootable.
>
> Would kvm have anything to do with this?
>
> Many thanks,
> -T
>

unable to cut a DVD from iso

[Todd And Margo Chester]

Hi All,

For some reason, I am unable to cut a DVD from an ISO.
Specifically, I am trying to cut DVDs of the SL61 DVD.

I get bad md5sums when using from both growisofs and k3b.

Just for kicks, I tried to boot off of DVD#1 and my BIOS
won't even recognize it as bootable.

Would kvm have anything to do with this?

Many thanks,
-T

Re: Is your USB really slow?

[Todd And Margo Chester]

On 12/06/2011 12:02 PM, Peter Jakobi wrote:

On Tue, Dec 06, 2011 at 08:41:09PM +0100, Florian Philipp wrote:

Am 06.12.2011 19:15, schrieb Todd And Margo Chester:


Extra info.  If I boot off a Fedora Core 16 Xfce Live CD, I
can copy my files to flash drive at full speed.  It is a pain
in the neck, but it works.


I  was  a  bit  pissed  b/c  of a similar  issue  this  week  as  well
(non-centos, ubuntu lucid, kernel 3.0).

checking  mount  options (async, stripping any  remaining  prehistoric
dirsync or other artefacts) and

cd /sys/block/sda/queue&&  ( echo noop>   scheduler;
test -f rotational&&  echo 0>  rotational )

made it behave and restored _reliable_ writing.

[   current  cfq  is said to recognize flashes, but it doesn't for me
 (rotational  was still 1), worse: using cfq degrades to less  than
 100KB/s writes for me, 100% reproducible after copying a few GB (AFAIR,
 always  after copying 'more  than physical RAM' GB, so it is  some
 kind of device-specific buffer reuse bug, maybe also vfat  related
 or related to  flaky readers. However there's nothing in the logs).
]

Hth,


Not see a difference between noop and cfq.  :'(

Thank you for the help,
-T


# ls -al rustymapes.ogg
-rwxrw-rw-. 1 todd users 5780060 Sep 30 11:37 rustymapes.ogg

# cat /sys/block/sda/queue/scheduler
noop anticipatory deadline [cfq]

# date; cp rustymapes.ogg /mnt/R/cfq; date
Tue Dec  6 12:19:38 PST 2011
Tue Dec  6 12:20:09 PST 2011


# echo "noop" > /sys/block/sda/queue/scheduler
# cat /sys/block/sda/queue/scheduler
[noop] anticipatory deadline cfq

# date; cp rustymapes.ogg /mnt/R/noop; date
Tue Dec  6 12:20:39 PST 2011
Tue Dec  6 12:21:10 PST 2011

Re: Is your USB really slow?

[Todd And Margo Chester]

On 12/06/2011 11:41 AM, Florian Philipp wrote:

Am 06.12.2011 19:15, schrieb Todd And Margo Chester:

Hi All,

SL 6.1 x64

I have noticed that writes to my USB Flash Drives
are a good 20 times slower than on my other CentOS
5.7 x32 machine.  What use to take five minutes,
now takes over two hours.  :-(

Anyone else notice this?  And, did you come up with a
work around?

Many thanks,
-T


Extra info.  If I boot off a Fedora Core 16 Xfce Live CD, I
can copy my files to flash drive at full speed.  It is a pain
in the neck, but it works.

-T


Factor 20 could mean USB-1.1 instead of 2.0. Factor 40 would be a better
fit but your flash drive probably maxes out before that is reached.
Please post the output of `lsusb -v`, `lspci` and `lsmod`.

Regards,
Florian Philipp




$lsusb -v

Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Device Descriptor:
  bLength18
  bDescriptorType 1
  bcdUSB   1.10
  bDeviceClass9 Hub
  bDeviceSubClass 0 Unused
  bDeviceProtocol 0 Full speed (or root) hub
  bMaxPacketSize064
  idVendor   0x1d6b Linux Foundation
  idProduct  0x0001 1.1 root hub
  bcdDevice2.06
  iManufacturer   3
  iProduct2
  iSerial 1
  bNumConfigurations  1
  Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength   25
bNumInterfaces  1
bConfigurationValue 1
iConfiguration  0
bmAttributes 0xe0
  Self Powered
  Remote Wakeup
MaxPower0mA
Interface Descriptor:
  bLength 9
  bDescriptorType 4
  bInterfaceNumber0
  bAlternateSetting   0
  bNumEndpoints   1
  bInterfaceClass 9 Hub
  bInterfaceSubClass  0 Unused
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bEndpointAddress 0x81  EP 1 IN
bmAttributes3
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wMaxPacketSize 0x0002  1x 2 bytes
bInterval 255

Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Device Descriptor:
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Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
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Re: Is your USB really slow?

[Peter Jakobi]

On Tue, Dec 06, 2011 at 08:41:09PM +0100, Florian Philipp wrote:
> Am 06.12.2011 19:15, schrieb Todd And Margo Chester:
> > 
> > Extra info.  If I boot off a Fedora Core 16 Xfce Live CD, I
> > can copy my files to flash drive at full speed.  It is a pain
> > in the neck, but it works.

I  was  a  bit  pissed  b/c  of a similar  issue  this  week  as  well
(non-centos, ubuntu lucid, kernel 3.0). 

checking  mount  options (async, stripping any  remaining  prehistoric
dirsync or other artefacts) and

   cd /sys/block/sda/queue && ( echo noop >  scheduler; 
   test -f rotational && echo 0 > rotational )

made it behave and restored _reliable_ writing.

[   current  cfq  is said to recognize flashes, but it doesn't for me
(rotational  was still 1), worse: using cfq degrades to less  than
100KB/s writes for me, 100% reproducible after copying a few GB (AFAIR,
always  after copying 'more  than physical RAM' GB, so it is  some 
kind of device-specific buffer reuse bug, maybe also vfat  related 
or related to  flaky readers. However there's nothing in the logs).
]

Hth,
-- 
cu
Peter
jak...@acm.org

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Re: Is your USB really slow?

[Florian Philipp]

Am 06.12.2011 19:15, schrieb Todd And Margo Chester:
>> Hi All,
>>
>> SL 6.1 x64
>>
>> I have noticed that writes to my USB Flash Drives
>> are a good 20 times slower than on my other CentOS
>> 5.7 x32 machine.  What use to take five minutes,
>> now takes over two hours.  :-(
>>
>> Anyone else notice this?  And, did you come up with a
>> work around?
>>
>> Many thanks,
>> -T
> 
> Extra info.  If I boot off a Fedora Core 16 Xfce Live CD, I
> can copy my files to flash drive at full speed.  It is a pain
> in the neck, but it works.
> 
> -T

Factor 20 could mean USB-1.1 instead of 2.0. Factor 40 would be a better
fit but your flash drive probably maxes out before that is reached.
Please post the output of `lsusb -v`, `lspci` and `lsmod`.

Regards,
Florian Philipp



signature.asc
Description: OpenPGP digital signature

Is your USB really slow?

[Todd And Margo Chester]

Hi All,

SL 6.1 x64

I have noticed that writes to my USB Flash Drives
are a good 20 times slower than on my other CentOS
5.7 x32 machine.  What use to take five minutes,
now takes over two hours.  :-(

Anyone else notice this?  And, did you come up with a
work around?

Many thanks,
-T


Extra info.  If I boot off a Fedora Core 16 Xfce Live CD, I
can copy my files to flash drive at full speed.  It is a pain
in the neck, but it works.

-T