Re: [vserver] Possible Hashify Corruption

From: Gordan Bobic <gordan_at_bobich.net>
Date: Mon 18 Oct 2010 - 22:24:38 BST
Message-ID: <4CBCBB16.9010508@bobich.net>

On 10/18/2010 09:55 PM, Gordan Bobic wrote:
> On 10/18/2010 01:53 AM, Herbert Poetzl wrote:
>
>> putting superstition aside, can you recreate the issue?
>> i.e. is there a script or procedure which reliably
>> produces the 'corruption'?
>
> I believe I have just successfully re-created this, and it seems to be
> specifically related to hashify.
>
> I have two VMs, call them vm1 and vm2. Their contents are fine. Run
> hashify on them and reboot. All the binaries will be broken in the same
> way.
>
> The content of the files seems to be downright random. e.g. in the
> current instance, bash binary is zero-filled for the first few
> screenfuls I bothered to look through, and /sbin/init contains what
> looks like it might be a fragment of a RPM file. It is almost as if
> hashifying points the blocks somewhere random, most likely unused blocks
> since I haven't observed any file system level corruption or corruption
> of files in the host.
>
> I'll re-try it again in a bit, but so far it's been consistent.

For completenes, the userspace packages I use are:

util-vserver-lib-0.30.215+svn2847-143596525.fc12.x86_64
util-vserver-build-0.30.215+svn2847-143596525.fc12.x86_64
util-vserver-core-0.30.215+svn2847-143596525.fc12.x86_64
util-vserver-0.30.215+svn2847-143596525.fc12.x86_64
util-vserver-sysv-0.30.215+svn2847-143596525.fc12.x86_64

The kernel is 2.6.30.10-vs2.3.0.36.14-pre8.

Gordan
Received on Mon Oct 18 22:24:59 2010

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