3.6.0 kernel - ext4 corruption, or?

3.6.0 kernel - ext4 corruption, or?

[Justin Piszcz]

Hi,

I read there was a bug in 3.6.2, is there also one in 3.6.0, or can someone
help explain this?
I did boot systemrescuecd 3.0.0 and ran fsck.ext4 -f partition and there
were no errors reported.
Seems the inode for the directory is missing?

# grep 10.0.0.11 -r /etc
/etc/posfix.old/master.cf:10.0.0.11:smtp         inet  n       -       -
-        1    postscreen

# ls -l /etc/posfix.old/master.cf
-rw-r--r-- 1 root root 13236 Oct 28  2011 /etc/posfix.old/master.cf

# ls -ld /etc/postfix.old
ls: cannot access /etc/postfix.old: No such file or directory

Justin.

Re: 3.6.0 kernel - ext4 corruption, or?

[Steven J. Magnani]

False alarm? : 

On Wed, 2012-10-24 at 08:15 -0400, Justin Piszcz wrote: 
> # grep 10.0.0.11 -r /etc
> /etc/posfix.old/master.cf:10.0.0.11:smtp         inet  n       -       -
> -        1    postscreen
> 
> # ls -l /etc/posfix.old/master.cf
> -rw-r--r-- 1 root root 13236 Oct 28  2011 /etc/posfix.old/master.cf
> 
> # ls -ld /etc/postfix.old 
> ls: cannot access /etc/postfix.old: No such file or directory

This is not the same directory (posTfix).

------------------------------------------------------------------------
Steven J. Magnani               "I claim this network for MARS!
www.digidescorp.com              Earthling, return my space modulator!"

#include <standard.disclaimer>

Re: 3.6.0 kernel - ext4 corruption, or?

[tytso]

On Wed, Oct 24, 2012 at 08:15:37AM -0400, Justin Piszcz wrote:
> 
> I read there was a bug in 3.6.2, is there also one in 3.6.0, or can someone
> help explain this?

The problem which we are currently trying to investigate was
reportedly introduced in v3.6.1.  So far that's about how we know; we
have two users who have reported it, but I and other ext4 developers
haven't been able to reproduce it yet.

> # grep 10.0.0.11 -r /etc
> /etc/posfix.old/master.cf:10.0.0.11:smtp         inet  n       -       -
> -        1    postscreen
> 
> # ls -l /etc/posfix.old/master.cf
> -rw-r--r-- 1 root root 13236 Oct 28  2011 /etc/posfix.old/master.cf
> 
> # ls -ld /etc/postfix.old
> ls: cannot access /etc/postfix.old: No such file or directory
> 

Looks like you or some script renamed /etc/postfix to /etc/posfix.old
as part some upgrade?

      	       	       	      	      		   - Ted

RE: 3.6.0 kernel - ext4 corruption, or?

[Justin Piszcz]

-----Original Message-----
From: tytso@mit.edu [mailto:tytso@mit.edu] 
Sent: Wednesday, October 24, 2012 10:40 AM
To: Justin Piszcz; Steven J. Magnani
Cc: linux-kernel@vger.kernel.org
Subject: Re: 3.6.0 kernel - ext4 corruption, or?

On Wed, Oct 24, 2012 at 08:15:37AM -0400, Justin Piszcz wrote:
> 
> I read there was a bug in 3.6.2, is there also one in 3.6.0, or can
someone
> help explain this?

The problem which we are currently trying to investigate was
reportedly introduced in v3.6.1.  So far that's about how we know; we
have two users who have reported it, but I and other ext4 developers
haven't been able to reproduce it yet.

Got it.

> # grep 10.0.0.11 -r /etc
> /etc/posfix.old/master.cf:10.0.0.11:smtp         inet  n       -       -
> -        1    postscreen
> 
> # ls -l /etc/posfix.old/master.cf
> -rw-r--r-- 1 root root 13236 Oct 28  2011 /etc/posfix.old/master.cf
> 
> # ls -ld /etc/postfix.old
> ls: cannot access /etc/postfix.old: No such file or directory
> 

Looks like you or some script renamed /etc/postfix to /etc/posfix.old
as part some upgrade?

Whoops-- sorry about that, typo, so for now (concerning the other bug) it's
best to stay with 3.6.0 until the bug is found, thank you.

Justin.

Re: 3.6.0 kernel - ext4 corruption, or?

[Theodore Ts'o]

On Wed, Oct 24, 2012 at 11:53:47AM -0400, Justin Piszcz wrote:
>
> The problem which we are currently trying to investigate was
> reportedly introduced in v3.6.1.  So far that's about how we know; we
> have two users who have reported it, but I and other ext4 developers
> haven't been able to reproduce it yet.
>
> Got it.

Sorry, typo, we believe that it was introduced in v3.6.2; there were
no ext4-related changes between v3.6 and v3.6.1.

                                         - Ted