On Wed, Feb 15, 2023 at 01:15:08PM -0700, Uday Shankar wrote: > The block layer might merge together discard requests up until the > max_discard_segments limit is hit, but blk_insert_cloned_request checks > the segment count against max_segments regardless of the req op. This > can result in errors like the following when discards are issued through > a DM device and max_discard_segments exceeds max_segments for the queue > of the chosen underlying device. > > blk_insert_cloned_request: over max segments limit. (256 > 129) > > Fix this by looking at the req_op and enforcing the appropriate segment > limit - max_discard_segments for REQ_OP_DISCARDs and max_segments for > everything else.
I'd just remove the debug check entirely. -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel
