2012-10-24 12:15:41

by Justin Piszcz

[permalink] [raw]
Subject: 3.6.0 kernel - ext4 corruption, or?

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.


2012-10-24 13:43:53

by Steven J. Magnani

[permalink] [raw]
Subject: Re: 3.6.0 kernel - ext4 corruption, or?

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!
http://www.digidescorp.com Earthling, return my space modulator!"

#include <standard.disclaimer>


2012-10-24 14:40:38

by Theodore Ts'o

[permalink] [raw]
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.

> # 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

2012-10-24 15:53:53

by Justin Piszcz

[permalink] [raw]
Subject: RE: 3.6.0 kernel - ext4 corruption, or?



-----Original Message-----
From: [email protected] [mailto:[email protected]]
Sent: Wednesday, October 24, 2012 10:40 AM
To: Justin Piszcz; Steven J. Magnani
Cc: [email protected]
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.

2012-10-24 18:39:09

by Theodore Ts'o

[permalink] [raw]
Subject: Re: 3.6.0 kernel - ext4 corruption, or?

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