There are several open bug reports upstream regarding ext4 corruption, but it's not clear which, if any, are related to the problems being observed.
http://bugzilla.kernel.org/show_bug.cgi?id=14354 is one bug that appears to be linked to the use of the DM layer - if you're following up to this bug report, please indicate whether your ext4 fs is sitting on top of a dm-crypt, LVM, or RAID device.
That bug also mentions using auto_da_alloc=0 as a boot option to work around; we should check whether that boot option makes a difference for users seeing this bug.
There are several open bug reports upstream regarding ext4 corruption, but it's not clear which, if any, are related to the problems being observed.
http:// bugzilla. kernel. org/show_ bug.cgi? id=14354 is one bug that appears to be linked to the use of the DM layer - if you're following up to this bug report, please indicate whether your ext4 fs is sitting on top of a dm-crypt, LVM, or RAID device.
That bug also mentions using auto_da_alloc=0 as a boot option to work around; we should check whether that boot option makes a difference for users seeing this bug.