Hi Here is the serie of 7 patches to hold write bios on dm-raid1 until dmeventd does its job. It fixes bug https://bugzilla.redhat.com/show_bug.cgi?id=502927 . The first 6 patches are preparatory, they just move the code around, the last patch does the fix. I tested the thing, I managed to reproduce the bug (by manually stopping dmeventd with STOP signal, failing primary mirror leg and writing to the device) and I also verified that the patches fix the bug. For non-dmeventd operation, the current behavior is wrong and I just keep it as wrong as it was. There is no easy fix. It is just assume that if the user doesn't use dmeventd, he can't activate failed disks again. Mikulas -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel