Bug 206089
| Summary: | attempting to change the minor number of a cmirror causes havoc | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Cluster Suite | Reporter: | Corey Marthaler <cmarthal> |
| Component: | cmirror | Assignee: | Jonathan Earl Brassow <jbrassow> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Cluster QE <mspqa-list> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 4 | CC: | agk, cfeist, dwysocha, mbroz |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2008-08-05 21:34:56 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
This is reproducable. This is the exact same problem as rename - only the cmirror package is refussing to be screwed up by allowing multiple copies of the same table to be loaded. There is a work-around to this pending for user-space, as well as a kernel patch to fix the problem. Fixed, but waiting for checkin/new packages. Devel ACK let's put this into POST, since the fixes are now in the packages (I've checked), but I'm not sure the package has been built. fix verified in the latest builds: [root@link-08 lvm]# uname -ar Linux link-08 2.6.9-42.17.ELsmp #1 SMP Mon Oct 9 18:42:57 EDT 2006 x86_64 x86_64 x86_64 GNU/Linux [root@link-08 lvm]# rpm -q lvm2 lvm2-2.02.13-1 [root@link-08 lvm]# rpm -q lvm2-cluster lvm2-cluster-2.02.13-1 [root@link-08 lvm]# rpm -q device-mapper device-mapper-1.02.12-3 [root@link-08 lvm]# rpm -q cmirror-kernel cmirror-kernel-2.6.9-13.0 Fixed in latest release. |
Description of problem: It appears that after attempting to change the minor number of a cluster mirror, I ended up with an additional mirror server (two total) as well as additional mirror legs. [root@taft-04 tmp]# lvscan ACTIVE '/dev/vg/mirror' [100.00 GB] inherit [root@taft-04 tmp]# dmsetup ls vg-mirror_mimage_1 (253, 4) vg-mirror_mimage_0 (253, 3) vg-mirror (253, 5) VolGroup00-LogVol01 (253, 1) VolGroup00-LogVol00 (253, 0) vg-mirror_mlog (253, 2) [root@taft-04 tmp]# lvchange -My --major 200 --minor 100 /dev/vg/mirror Logical volume mirror will be deactivated temporarily. Continue? [y/n]: y Error locking on node taft-04: Internal lvm error, check syslog Error locking on node taft-02: Internal lvm error, check syslog Error locking on node taft-03: Internal lvm error, check syslog Error locking on node taft-01: Internal lvm error, check syslog Failed to lock mirror Appears to be two mirror servers now, taft-01 and taft-04... Sep 11 10:50:26 taft-01 kernel: dm-cmirror: I'm the cluster mirror log server for I6FTGdqG Sep 11 10:50:26 taft-01 kernel: dm-cmirror: Disk Resume:: I6FTGdqG (active) Sep 11 10:50:26 taft-01 dmeventd[7002]: Monitoring mirror device, vg-mirror for events Sep 11 10:50:26 taft-01 kernel: dm-cmirror: Live nodes :: 1 Sep 11 10:50:26 taft-01 kernel: dm-cmirror: In-Use Regions :: 0 Sep 11 10:50:26 taft-01 kernel: dm-cmirror: Good IUR's :: 0 Sep 11 10:50:26 taft-01 kernel: dm-cmirror: Bad IUR's :: 0 Sep 11 10:50:26 taft-01 kernel: dm-cmirror: Sync count :: 100783 Sep 11 10:50:26 taft-01 kernel: dm-cmirror: Disk Region count :: 204800 Sep 11 10:50:26 taft-01 kernel: dm-cmirror: Region count :: 204800 Sep 11 10:50:26 taft-01 kernel: dm-cmirror: Marked regions:: Sep 11 10:50:26 taft-01 kernel: dm-cmirror: 16816 - 24579 Sep 11 10:50:26 taft-01 kernel: dm-cmirror: 24582 - 24583 Sep 11 10:50:26 taft-01 kernel: dm-cmirror: 24585 - 24587 [...] Sep 11 10:50:32 taft-01 kernel: dm-cmirror: 204780 Sep 11 10:50:32 taft-01 kernel: dm-cmirror: 204782 - 204787 Sep 11 10:50:32 taft-01 kernel: dm-cmirror: 204790 - 204791 Sep 11 10:50:32 taft-01 kernel: dm-cmirror: 204793 - 204795 Sep 11 10:50:32 taft-01 kernel: dm-cmirror: 204798 - 204800 Sep 11 10:50:32 taft-01 kernel: dm-cmirror: Total = 104017 Sep 11 10:50:46 taft-01 kernel: dm-cmirror: Log already exists with uuid, I6FTGdqG Sep 11 10:50:46 taft-01 kernel: device-mapper: dm-mirror: Error creating mirror dirty log Sep 11 10:50:46 taft-01 kernel: device-mapper: error adding target to table Sep 11 10:50:46 taft-01 lvm[6847]: device-mapper: reload ioctl failed: Invalid argument Sep 11 11:58:49 taft-04 kernel: dm-cmirror: I'm the cluster mirror log server for I6FTGdqG Sep 11 11:58:49 taft-04 kernel: dm-cmirror: Disk Resume:: I6FTGdqG (active) Sep 11 11:58:49 taft-04 kernel: dm-cmirror: Live nodes :: 3 Sep 11 11:58:49 taft-04 kernel: dm-cmirror: In-Use Regions :: 0 Sep 11 11:58:49 taft-04 kernel: dm-cmirror: Good IUR's :: 0 Sep 11 11:58:49 taft-04 kernel: dm-cmirror: Bad IUR's :: 0 Sep 11 11:58:49 taft-04 kernel: dm-cmirror: Sync count :: 100783 Sep 11 11:58:49 taft-04 kernel: dm-cmirror: Disk Region count :: 204800 Sep 11 11:58:49 taft-04 kernel: dm-cmirror: Region count :: 204800 Sep 11 11:58:49 taft-04 kernel: dm-cmirror: Marked regions:: Sep 11 11:58:49 taft-04 kernel: dm-cmirror: 16816 - 24579 Sep 11 11:58:49 taft-04 kernel: dm-cmirror: 24582 - 24583 Sep 11 11:58:49 taft-04 kernel: dm-cmirror: 24585 - 24587 Sep 11 11:58:49 taft-04 kernel: dm-cmirror: 24590 - 24592 [...] Sep 11 11:58:54 taft-04 kernel: dm-cmirror: 204782 - 204787 Sep 11 11:58:54 taft-04 kernel: dm-cmirror: 204790 - 204791 Sep 11 11:58:54 taft-04 kernel: dm-cmirror: 204793 - 204795 Sep 11 11:58:54 taft-04 kernel: dm-cmirror: 204798 - 204800 Sep 11 11:58:54 taft-04 kernel: dm-cmirror: Total = 104017 Sep 11 11:59:24 taft-04 dmeventd[6853]: Monitoring mirror device, vg-mirror for events Sep 11 11:59:24 taft-04 kernel: dm-cmirror: Log already exists with uuid, I6FTGdqG Sep 11 11:59:24 taft-04 kernel: device-mapper: dm-mirror: Error creating mirror dirty log Sep 11 11:59:24 taft-04 kernel: device-mapper: error adding target to table Sep 11 11:59:24 taft-04 lvm[6671]: device-mapper: reload ioctl failed: Invalid argument [root@taft-01 tmp]# lvs -a -o +devices LV VG Attr LSize Origin Snap% Move Log Copy% Devices mirror vg mwi-a- 100.00G mirror_mlog 56.99 mirror_mimage_0(0),mirror_mimage_1(0) [mirror_mimage_0] vg iwi-ao 100.00G /dev/sdb1(0) [mirror_mimage_0] vg iwi-ao 100.00G /dev/sdb3(0) [mirror_mimage_1] vg iwi-ao 100.00G /dev/sdb2(0) [mirror_mimage_1] vg iwi-ao 100.00G /dev/sdc1(0) [mirror_mlog] vg lwi-ao 4.00M /dev/sdc3(0) Version-Release number of selected component (if applicable): [root@taft-01 tmp]# uname -ar Linux taft-01 2.6.9-42.0.2.ELsmp #1 SMP Thu Aug 17 17:57:31 EDT 2006 x86_64 x86_64 x86_64 GNU/Linux [root@taft-01 tmp]# rpm -q lvm2 lvm2-2.02.06-6.0.RHEL4 [root@taft-01 tmp]# rpm -q lvm2-cluster lvm2-cluster-2.02.06-7.0.RHEL4 [root@taft-01 tmp]# rpm -q device-mapper device-mapper-1.02.07-4.0.RHEL4 [root@taft-01 tmp]# rpm -q cmirror cmirror-1.0.1-0 [root@taft-01 tmp]# rpm -q cmirror-kernel cmirror-kernel-2.6.9-13.0