On Tuesday May 26, goswin-v-b@xxxxxx wrote: > hank peng <pengxihan@xxxxxxxxx> writes: > > > Only one of disks in this RAID1failed, it should continue to work with > > degraded state. > > Why LVM complained with I/O errors?? > > That is because the last drive in a raid1 can not fail: > > md9 : active raid1 ram1[1] ram0[2](F) > 65472 blocks [2/1] [_U] > > # mdadm --fail /dev/md9 /dev/ram1 > mdadm: set /dev/ram1 faulty in /dev/md9 > > md9 : active raid1 ram1[1] ram0[2](F) > 65472 blocks [2/1] [_U] > > See, still marked working. > > MfG > Goswin > > PS: Why doesn't mdadm or kernel give a message about not failing? -ENOPATCH :-) You would want to rate limit any such message from the kernel, but it might make sense to have it. NeilBrown -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
