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Description of problem: # Mirror -> RAID1 -> RAID1 down conversion [root@taft-01 ~]# lvs -a -o +devices LV VG Attr LSize Log Copy% Devices cent centipede mwi-a-m- 500.00m cent_mlog 100.00 cent_mimage_0(0),cent_mimage_1(0),cent_mimage_2(0) [cent_mimage_0] centipede iwi-aom- 500.00m /dev/sdh2(0) [cent_mimage_1] centipede iwi-aom- 500.00m /dev/sdh1(0) [cent_mimage_2] centipede iwi-aom- 500.00m /dev/sdg2(0) [cent_mlog] centipede lwi-aom- 4.00m /dev/sdd2(0) [root@taft-01 ~]# lvconvert --type raid1 centipede/cent [root@taft-01 ~]# lvs -a -o +devices LV VG Attr LSize Log Copy% Devices cent centipede rwi-a-m- 500.00m 100.00 cent_rimage_0(0),cent_rimage_1(0),cent_rimage_2(0) [cent_rimage_0] centipede iwi-aor- 500.00m /dev/sdh2(0) [cent_rimage_1] centipede iwi-aor- 500.00m /dev/sdh1(0) [cent_rimage_2] centipede iwi-aor- 500.00m /dev/sdg2(0) [cent_rmeta_0] centipede ewi-aor- 4.00m /dev/sdh2(125) [cent_rmeta_1] centipede ewi-aor- 4.00m /dev/sdh1(125) [cent_rmeta_2] centipede ewi-aor- 4.00m /dev/sdg2(125) [root@taft-01 ~]# lvconvert -m 1 centipede/cent /dev/sdh1 device-mapper: rename ioctl on centipede-cent_rimage_2 failed: Device or resource busy Failed to rename centipede-cent_rimage_2 (253:5) to centipede-cent_rimage_1 Failed to resume centipede/cent after committing changes libdevmapper exiting with 7 device(s) still suspended. [root@taft-01 ~]# lvs -a -o +devices [DEADLOCK] taft-01 kernel: device-mapper: ioctl: Unable to change name on mapped device centipede-cent_rimage_2 to one that already exists: centipede-cent_rimage_1 taft-01 kernel: INFO: task lvs:2301 blocked for more than 120 seconds. taft-01 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. taft-01 kernel: lvs D 0000000000000003 0 2301 2035 0x00000080 taft-01 kernel: ffff880218e09b18 0000000000000082 ffff880218e09ad8 ffffffffa000422e taft-01 kernel: ffff880218e09ae8 0000000008443e0a ffff880218e09b08 ffff8802152d1780 taft-01 kernel: ffff880215787078 ffff880218e09fd8 000000000000f4e8 ffff880215787078 taft-01 kernel: Call Trace: taft-01 kernel: [<ffffffffa000422e>] ? dm_table_unplug_all+0x8e/0x100 [dm_mod] taft-01 kernel: [<ffffffff8109b6a9>] ? ktime_get_ts+0xa9/0xe0 taft-01 kernel: [<ffffffff814ed153>] io_schedule+0x73/0xc0 taft-01 kernel: [<ffffffff811b18ce>] __blockdev_direct_IO_newtrunc+0x6fe/0xb90 taft-01 kernel: [<ffffffff81257f1d>] ? get_disk+0x7d/0xf0 taft-01 kernel: [<ffffffff811b1dbe>] __blockdev_direct_IO+0x5e/0xd0 taft-01 kernel: [<ffffffff811ae6c0>] ? blkdev_get_blocks+0x0/0xc0 taft-01 kernel: [<ffffffff8126ccca>] ? kobject_get+0x1a/0x30 taft-01 kernel: [<ffffffff811af527>] blkdev_direct_IO+0x57/0x60 taft-01 kernel: [<ffffffff811ae6c0>] ? blkdev_get_blocks+0x0/0xc0 taft-01 kernel: [<ffffffff8111277b>] generic_file_aio_read+0x6bb/0x700 taft-01 kernel: [<ffffffff81213741>] ? avc_has_perm+0x71/0x90 taft-01 kernel: [<ffffffff8120d23f>] ? security_inode_permission+0x1f/0x30 taft-01 kernel: [<ffffffff811762ba>] do_sync_read+0xfa/0x140 taft-01 kernel: [<ffffffff81090a90>] ? autoremove_wake_function+0x0/0x40 taft-01 kernel: [<ffffffff811aeafc>] ? block_ioctl+0x3c/0x40 taft-01 kernel: [<ffffffff811891e2>] ? vfs_ioctl+0x22/0xa0 taft-01 kernel: [<ffffffff81218d2b>] ? selinux_file_permission+0xfb/0x150 taft-01 kernel: [<ffffffff8120c0d6>] ? security_file_permission+0x16/0x20 taft-01 kernel: [<ffffffff81176cb5>] vfs_read+0xb5/0x1a0 taft-01 kernel: [<ffffffff810d4582>] ? audit_syscall_entry+0x272/0x2a0 taft-01 kernel: [<ffffffff81176df1>] sys_read+0x51/0x90 Version-Release number of selected component (if applicable): 2.6.32-220.4.2.el6.x86_64 lvm2-2.02.95-1.el6 BUILT: Tue Mar 6 10:00:33 CST 2012 lvm2-libs-2.02.95-1.el6 BUILT: Tue Mar 6 10:00:33 CST 2012 lvm2-cluster-2.02.95-1.el6 BUILT: Tue Mar 6 10:00:33 CST 2012 udev-147-2.40.el6 BUILT: Fri Sep 23 07:51:13 CDT 2011 device-mapper-1.02.74-1.el6 BUILT: Tue Mar 6 10:00:33 CST 2012 device-mapper-libs-1.02.74-1.el6 BUILT: Tue Mar 6 10:00:33 CST 2012 device-mapper-event-1.02.74-1.el6 BUILT: Tue Mar 6 10:00:33 CST 2012 device-mapper-event-libs-1.02.74-1.el6 BUILT: Tue Mar 6 10:00:33 CST 2012 cmirror-2.02.95-1.el6 BUILT: Tue Mar 6 10:00:33 CST 2012 How reproducible: Everytime
Works for me. Is your kernel up-to-date? [root@bp-01 LVM2]# lvcreate -m2 -L 500M -n lv vg Logical volume "lv" created [root@bp-01 LVM2]# devices vg; dmsetup ls | grep vg- LV Copy% Devices lv 100.00 lv_mimage_0(0),lv_mimage_1(0),lv_mimage_2(0) [lv_mimage_0] /dev/sdb1(0) [lv_mimage_1] /dev/sdc1(0) [lv_mimage_2] /dev/sdd1(0) [lv_mlog] /dev/sdi1(0) vg-lv_mimage_2 (253:6) vg-lv (253:7) vg-lv_mimage_1 (253:5) vg-lv_mimage_0 (253:4) vg-lv_mlog (253:3) [root@bp-01 LVM2]# lvconvert --type raid1 vg/lv [root@bp-01 LVM2]# devices vg; dmsetup ls | grep vg- LV Copy% Devices lv 100.00 lv_rimage_0(0),lv_rimage_1(0),lv_rimage_2(0) [lv_rimage_0] /dev/sdb1(0) [lv_rimage_1] /dev/sdc1(0) [lv_rimage_2] /dev/sdd1(0) [lv_rmeta_0] /dev/sdb1(125) [lv_rmeta_1] /dev/sdc1(125) [lv_rmeta_2] /dev/sdd1(125) vg-lv (253:7) vg-lv_rmeta_2 (253:9) vg-lv_rmeta_1 (253:8) vg-lv_rmeta_0 (253:3) vg-lv_rimage_2 (253:6) vg-lv_rimage_1 (253:5) vg-lv_rimage_0 (253:4) [root@bp-01 LVM2]# lvconvert -m1 vg/lv [root@bp-01 LVM2]# devices vg; dmsetup ls | grep vg- LV Copy% Devices lv 100.00 lv_rimage_0(0),lv_rimage_1(0) [lv_rimage_0] /dev/sdb1(0) [lv_rimage_1] /dev/sdc1(0) [lv_rmeta_0] /dev/sdb1(125) [lv_rmeta_1] /dev/sdc1(125) vg-lv (253:7) vg-lv_rmeta_1 (253:8) vg-lv_rmeta_0 (253:3) vg-lv_rimage_1 (253:5) vg-lv_rimage_0 (253:4)
Still fails for me with the latest kern. [root@taft-01 ~]# lvconvert -m 1 cent/lv /dev/sdc1 device-mapper: rename ioctl on cent-lv_rimage_2 failed: Device or resource busy Failed to rename cent-lv_rimage_2 (253:6) to cent-lv_rimage_1 Failed to resume cent/lv after committing changes libdevmapper exiting with 7 device(s) still suspended. [root@taft-01 ~]# lvs -a -o +devices [HANG] 2.6.32-251.el6.x86_64 lvm2-2.02.95-1.el6 BUILT: Tue Mar 6 10:00:33 CST 2012 lvm2-libs-2.02.95-1.el6 BUILT: Tue Mar 6 10:00:33 CST 2012 lvm2-cluster-2.02.95-1.el6 BUILT: Tue Mar 6 10:00:33 CST 2012 udev-147-2.40.el6 BUILT: Fri Sep 23 07:51:13 CDT 2011 device-mapper-1.02.74-1.el6 BUILT: Tue Mar 6 10:00:33 CST 2012 device-mapper-libs-1.02.74-1.el6 BUILT: Tue Mar 6 10:00:33 CST 2012 device-mapper-event-1.02.74-1.el6 BUILT: Tue Mar 6 10:00:33 CST 2012 device-mapper-event-libs-1.02.74-1.el6 BUILT: Tue Mar 6 10:00:33 CST 2012 cmirror-2.02.95-1.el6 BUILT: Tue Mar 6 10:00:33 CST 2012
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Fix verified in the latest errata rpms. [root@taft-01 ~]# lvs -a -o +devices LV VG Attr LSize Copy% Devices lv taft rwi-a-m- 500.00m 100.00 lv_rimage_0(0),lv_rimage_1(0),lv_rimage_2(0) [lv_rimage_0] taft iwi-aor- 500.00m /dev/sdb1(1) [lv_rimage_1] taft iwi-aor- 500.00m /dev/sdc1(1) [lv_rimage_2] taft iwi-aor- 500.00m /dev/sdd1(1) [lv_rmeta_0] taft ewi-aor- 4.00m /dev/sdb1(0) [lv_rmeta_1] taft ewi-aor- 4.00m /dev/sdc1(0) [lv_rmeta_2] taft ewi-aor- 4.00m /dev/sdd1(0) [root@taft-01 ~]# lvconvert -m 1 taft/lv /dev/sdc1 [root@taft-01 ~]# lvs -a -o +devices LV VG Attr LSize Copy% Devices lv taft rwi-a-m- 500.00m 100.00 lv_rimage_0(0),lv_rimage_1(0) [lv_rimage_0] taft iwi-aor- 500.00m /dev/sdb1(1) [lv_rimage_1] taft iwi-aor- 500.00m /dev/sdd1(1) [lv_rmeta_0] taft ewi-aor- 4.00m /dev/sdb1(0) [lv_rmeta_1] taft ewi-aor- 4.00m /dev/sdd1(0) 2.6.32-251.el6.x86_64 lvm2-2.02.95-2.el6 BUILT: Fri Mar 16 08:39:54 CDT 2012 lvm2-libs-2.02.95-2.el6 BUILT: Fri Mar 16 08:39:54 CDT 2012 lvm2-cluster-2.02.95-2.el6 BUILT: Fri Mar 16 08:39:54 CDT 2012 udev-147-2.40.el6 BUILT: Fri Sep 23 07:51:13 CDT 2011 device-mapper-1.02.74-2.el6 BUILT: Fri Mar 16 08:39:54 CDT 2012 device-mapper-libs-1.02.74-2.el6 BUILT: Fri Mar 16 08:39:54 CDT 2012 device-mapper-event-1.02.74-2.el6 BUILT: Fri Mar 16 08:39:54 CDT 2012 device-mapper-event-libs-1.02.74-2.el6 BUILT: Fri Mar 16 08:39:54 CDT 2012 cmirror-2.02.95-2.el6 BUILT: Fri Mar 16 08:39:54 CDT 2012
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-2012-0962.html