[ale] Ext4 kernel bug

[Hessel, Matt]

FYI: fix has just been posted to the upstream mainline with specific 
info on the cause.  As long as you are not using the journal_checksum or 
journal_async_commit mount options, you are not affected..



commit 8c673cbc7682b3f2862fe42f8069cac20c09e160
Merge: 4476c0e ffb5387
Author: Linus Torvalds <torvalds at linux-foundation.org>
Date:   Tue Oct 30 15:35:16 2012 -0700

     Merge tag 'ext4_for_linus_stable' of 
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

     Pull ext4 bugfix from Ted Ts'o:
      "This fixes the root cause of the ext4 data corruption bug which 
raised
       a ruckus on LWN, Phoronix, and Slashdot.

       This bug only showed up when non-standard mount options
       (journal_async_commit and/or journal_checksum) were enabled, and when
       the file system was not cleanly unmounted, but the root cause was the
       inode bitmap modifications was not being properly journaled.

       This could potentially lead to minor file system corruptions (pass 5
       complaints with the inode allocation bitmap) after an unclean 
shutdown
       under the wrong/unlucky workloads, but it turned into major 
failure if
       the journal_checksum and/or jouaral_async_commit was enabled."

     * tag 'ext4_for_linus_stable' of 
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
       ext4: fix unjournaled inode bitmap modification



On 10/25/2012 12:47 PM, Jim Kinney wrote:
> 32 or 64-bit? I have both in DVD format
>   unless you have more than 4G RAM or 2TB drive space, using the 32-bit is best.
>
> On Thu, Oct 25, 2012 at 10:44 AM, Sean Kilpatrick <kilpatms at gmail.com> wrote:
>> Okay, I can do that.
>>
>> Does anyone have a CD/DVD of Centos 6.3 I could borrow?
>>
>> Sean
>>
>> On Thursday, October 25, 2012 08:58:00 am Jim Kinney wrote:
>>
>>> as that system is on f13 (dead, gone, should be updated IMMEDIATELY)
>>> it doesn't have a serious, if at all, issue with this kernel bug. It's
>>> very kernel version specific.
>>> Don't upgrade to f15 as it's also dead (F18 is nearing beta) soon.
>>> Back up the personal stuff and do a fresh install of F17 (and cuss a
>>> bit it the interface changes) or do a fresh install of Centos 6.3 (and
>>> add the EPEL repo for newer desktop toys).
>> [snipped for brevity]
>>
>>
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>
>