Subject: Re: [vserver] Possible Hashify Corruption - Update 2
From: Gordan Bobic <gordan@bobich.net>
Date: Wed, 20 Oct 2010 19:44:22 +0100

On 20/10/2010 15:53, John A. Sullivan III wrote:
> On Wed, 2010-10-20 at 15:02 +0100, Gordan Bobic wrote:
>> I have just tested this with a new kernel. And the issue doesn't arise
>> with 2.6.35.7-vs2.3.0.36.33! So it is definitely a kernel bug, most
>> likely in ext4.
>>
>> This really needs to be documented and stressed on the pages with
>> download links. Hashify feature causes total data corruption with
>> 2.6.30.10-vs2.3.0.36.14-pre8 when used on ext4 without a journal.
>>
>> I haven't tried other cases (ext4 with a journal or other file systems)
>> so I cannot speak for those, but in the mentioned use cases it is
>> completely repeatable.
>>
> Thank you, very, very much for wrestling this down - John

You're most welcome. It'd be interesting to find out at what kernel 
version this issue went away. Everything before that should be marked as 
dangerous, at least with ext4.

Gordan