On 02/01/2010 04:19 PM, Nikanth Karthikesan wrote: > Before remapping a barrier bio, make sure that there are no un-issued > pending I/O in the workqueue. Otherwise a dm_flush would simply add > a barrier request to the underlying device, without issuing the bio's > queued in the dm_crypt device. This should not be needed. Core dm code waits for all bios submitted before barrier requests. Mikulas, could you verify it? Milan -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel