sparse file handling bug in XFS

[Eric Sandeen]

On 6/16/11 12:57 PM, Christoph Hellwig wrote:
> On Thu, Jun 16, 2011 at 12:33:49PM -0500, Eric Sandeen wrote:
>> Actually this looks like it's a result of
>>
>> 6e857567dbbfe14dd6cc3f7414671b047b1ff5c7 xfs: don't truncate prealloc from frequently accessed inodes
>>
>> I thought Dave's patch from the "Re: drastic changes to allocsize semantics in or around 2.6.38?"
>> thread would fix it, but it doesn't seem to.  Here it is anyway ;)
> 
> It should fix the thing about the preallocation staying when removing
> and recreating the file.  Keeping pre-allocate blocks around otherwise
> is a considered a feature.

It strikes me as odd that truncating & rewriting would lead to
different preallocation though .. I'll let Dave chime in.

Thanks,
-Eric