I notice that the 'dmsetup table' output does not correspond to the information you gave at the beginning of the bug. (Different volume sizes - 16.5GB not 22GB - and different chunk size - 64KB not 8KB.) Does that 'dmsetup status' output correspond to the time the system reached OOM and tie in with the slabinfo you provided? If not, please can you try to get fresh data from the time of the failure? (both slabinfo and 'dmsetup status' taken at approximately the same time when the system is in (or close to) OOM; it's OK to take 'dmsetup info' and 'dmsetup table' earlier in the test as they won't change during it) Alasdair -- agk@xxxxxxxxxx -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel