This bug has been copied from bug #857554 and has been proposed to be backported to 6.3 z-stream (EUS).
The device failure regression test (helter_skelter) that found this regression now passes with discards turned on. Marking Verified. lvm2-2.02.95-10.el6_3.2 BUILT: Tue Oct 16 10:56:31 CDT 2012 lvm2-libs-2.02.95-10.el6_3.2 BUILT: Tue Oct 16 10:56:31 CDT 2012 lvm2-cluster-2.02.95-10.el6_3.2 BUILT: Tue Oct 16 10:56:31 CDT 2012 udev-147-2.41.el6 BUILT: Thu Mar 1 13:01:08 CST 2012 device-mapper-1.02.74-10.el6_3.2 BUILT: Tue Oct 16 10:56:31 CDT 2012 device-mapper-libs-1.02.74-10.el6_3.2 BUILT: Tue Oct 16 10:56:31 CDT 2012 device-mapper-event-1.02.74-10.el6_3.2 BUILT: Tue Oct 16 10:56:31 CDT 2012 device-mapper-event-libs-1.02.74-10.el6_3.2 BUILT: Tue Oct 16 10:56:31 CDT 2012 cmirror-2.02.95-10.el6_3.2 BUILT: Tue Oct 16 10:56:31 CDT 2012 [root@taft-04 ~]# pvscan PV /dev/sdb1 VG test lvm2 [135.66 GiB / 135.66 GiB free] PV /dev/sdc1 VG test lvm2 [135.66 GiB / 135.66 GiB free] PV /dev/sdd1 VG test lvm2 [135.66 GiB / 135.66 GiB free] [root@taft-04 ~]# lvcreate -m 1 -n mirror -L 100M test Logical volume "mirror" created [root@taft-04 ~]# lvs -a -o +devices LV VG Attr LSize Log Copy% Devices mirror test mwi-a-m- 100.00m mirror_mlog 100.00 mirror_mimage_0(0),mirror_mimage_1(0) [mirror_mimage_0] test iwi-aom- 100.00m /dev/sdb1(0) [mirror_mimage_1] test iwi-aom- 100.00m /dev/sdc1(0) [mirror_mlog] test lwi-aom- 4.00m /dev/sdd1(0) [root@taft-04 ~]# echo offline > /sys/block/sdc/device/state [root@taft-04 ~]# lvs -a -o +devices /dev/sdc1: read failed after 0 of 512 at 145669554176: Input/output error [...] /dev/sdc1: read failed after 0 of 2048 at 0: Input/output error Couldn't find device with uuid EKRAen-O2ge-ObPq-WjyK-c8P4-lcd9-guKeZD. LV VG Attr LSize Log Copy% Devices mirror test mwi-a-m- 100.00m mirror_mlog 100.00 mirror_mimage_0(0),mirror_mimage_1(0) [mirror_mimage_0] test iwi-aom- 100.00m /dev/sdb1(0) [mirror_mimage_1] test iwi-aom- 100.00m unknown device(0) [mirror_mlog] test lwi-aom- 4.00m /dev/sdd1(0) [root@taft-04 ~]# vgreduce --removemissing --force test /dev/sdc1: read failed after 0 of 512 at 145669554176: Input/output error [...] /dev/sdc1: read failed after 0 of 2048 at 0: Input/output error Couldn't find device with uuid EKRAen-O2ge-ObPq-WjyK-c8P4-lcd9-guKeZD. Wrote out consistent volume group test
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHBA-2012-1399.html