lkml.org 
[lkml]   [2010]   [May]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: Wrong DIF guard tag on ext2 write
From
Date
>>>>> "Christof" == Christof Schmitt <christof.schmitt@de.ibm.com> writes:

Christof> Since the guard tags are created in Linux, it seems that the
Christof> data attached to the write request changes between the
Christof> generation in bio_integrity_generate and the call to
Christof> sd_prep_fn.

Yep, known bug. Page writeback locking is messed up for buffer_head
users. The extNfs folks volunteered to look into this a while back but
I don't think they have found the time yet.


Christof> Using ext3 or ext4 instead of ext2 does not show the problem.

Last I looked there were still code paths in ext3 and ext4 that
permitted pages to be changed during flight. I guess you've just been
lucky.

--
Martin K. Petersen Oracle Linux Engineering


\
 
 \ /
  Last update: 2010-05-31 16:25    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site