Bug 809231
| Summary: | merged back raid image (with change tracking) doesn't appear to get synced properly | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Corey Marthaler <cmarthal> |
| Component: | kernel | Assignee: | Jonathan Earl Brassow <jbrassow> |
| Status: | CLOSED ERRATA | QA Contact: | Cluster QE <mspqa-list> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 6.3 | CC: | agk, dwysocha, heinzm, jbrassow, mbroz, msnitzer, prajnoha, prockai, thornber, zkabelac |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | kernel-2.6.32-269.el6 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2012-06-20 08:45:15 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: | |||
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Description
Corey Marthaler
2012-04-02 19:16:28 UTC
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release. Before patch: [root@bp-01 ~]# lvcreate --type raid1 -m 2 -L 1G -n lv vg Logical volume "lv" created [root@bp-01 ~]# devices vg LV Copy% Devices lv 100.00 lv_rimage_0(0),lv_rimage_1(0),lv_rimage_2(0) [lv_rimage_0] /dev/sde1(1) [lv_rimage_1] /dev/sdc1(1) [lv_rimage_2] /dev/sdf1(1) [lv_rmeta_0] /dev/sde1(0) [lv_rmeta_1] /dev/sdc1(0) [lv_rmeta_2] /dev/sdf1(0) [root@bp-01 ~]# lvconvert --splitmirrors 1 --trackchanges vg/lv lv_rimage_2 split from lv for read-only purposes. Use 'lvconvert --merge vg/lv_rimage_2' to merge back into lv [root@bp-01 ~]# dd if=/dev/zero of=/dev/vg/lv bs=4M dd: writing `/dev/vg/lv': No space left on device 257+0 records in 256+0 records out 1073741824 bytes (1.1 GB) copied, 241.313 s, 4.4 MB/s [root@bp-01 ~]# sync [root@bp-01 ~]# lvconvert --merge vg/lv_rimage_2; dmsetup status vg-lv vg/lv_rimage_2 successfully merged back into vg/lv 0 2097152 raid raid1 3 AAA 2097152/2097152 ^^^^^^^^^^^^^^^^ SHOULD NOT BE FULLY SYNC'ED - INDICATES RECOVERY IS SKIPPED After patch: [root@bp-01 ~]# lvcreate --type raid1 -m 2 -L 1G -n lv vg Logical volume "lv" created [root@bp-01 ~]# devices vg LV Copy% Devices lv 100.00 lv_rimage_0(0),lv_rimage_1(0),lv_rimage_2(0) [lv_rimage_0] /dev/sde1(1) [lv_rimage_1] /dev/sdc1(1) [lv_rimage_2] /dev/sdf1(1) [lv_rmeta_0] /dev/sde1(0) [lv_rmeta_1] /dev/sdc1(0) [lv_rmeta_2] /dev/sdf1(0) [root@bp-01 ~]# lvconvert --splitmirrors 1 --trackchanges vg/lv lv_rimage_2 split from lv for read-only purposes. Use 'lvconvert --merge vg/lv_rimage_2' to merge back into lv [root@bp-01 ~]# dd if=/dev/zero of=/dev/vg/lv bs=4M dd: writing `/dev/vg/lv': No space left on device 257+0 records in 256+0 records out 1073741824 bytes (1.1 GB) copied, 237.336 s, 4.5 MB/s [root@bp-01 ~]# sync [root@bp-01 ~]# lvconvert --merge vg/lv_rimage_2; dmsetup status vg-lv vg/lv_rimage_2 successfully merged back into vg/lv 0 2097152 raid raid1 3 AAa 0/2097152 ^^^^^^^^^^^^^^^^^^ Device is properly signified as out-of-sync [root@bp-01 ~]# dmsetup status vg-lv 0 2097152 raid raid1 3 AAA 2097152/2097152 ^^^^^^^^^^^^^^^^^^ And goes on to recover properly. Patch(es) available on kernel-2.6.32-269.el6 Fix appears to work in the latest kernel. 2.6.32-269.el6.x86_64 lvm2-2.02.95-7.el6 BUILT: Wed May 2 05:14:03 CDT 2012 lvm2-libs-2.02.95-7.el6 BUILT: Wed May 2 05:14:03 CDT 2012 lvm2-cluster-2.02.95-7.el6 BUILT: Wed May 2 05:14:03 CDT 2012 udev-147-2.41.el6 BUILT: Thu Mar 1 13:01:08 CST 2012 device-mapper-1.02.74-7.el6 BUILT: Wed May 2 05:14:03 CDT 2012 device-mapper-libs-1.02.74-7.el6 BUILT: Wed May 2 05:14:03 CDT 2012 device-mapper-event-1.02.74-7.el6 BUILT: Wed May 2 05:14:03 CDT 2012 device-mapper-event-libs-1.02.74-7.el6 BUILT: Wed May 2 05:14:03 CDT 2012 cmirror-2.02.95-7.el6 BUILT: Wed May 2 05:14:03 CDT 2012 SCENARIO - [split_w_tracking_io_merge] Create a 3-way raid1 with fs data, verify data, split image with tracking, change data on raid vol, merge split image data back, verify origin data taft-01: lvcreate --type raid1 -m 2 -n split_tracking -L 1G split_image Waiting until all mirror|raid volumes become fully syncd... 0/1 mirror(s) are fully synced: ( 28.72% ) 0/1 mirror(s) are fully synced: ( 61.51% ) 0/1 mirror(s) are fully synced: ( 94.91% ) 1/1 mirror(s) are fully synced: ( 100.00% ) Placing an ext filesystem on raid1 volume mke2fs 1.41.12 (17-May-2010) Mounting raid1 volume Writing files to /mnt/split_tracking /usr/tests/sts-rhel6.3/bin/checkit -w /mnt/split_tracking -f /tmp/split_trackingA.26258 -n 500 checkit starting with: CREATE Num files: 500 Random Seed: 17282 Verify XIOR Stream: /tmp/split_trackingA.26258 Working dir: /mnt/split_tracking Checking files on /mnt/split_tracking /usr/tests/sts-rhel6.3/bin/checkit -w /mnt/split_tracking -f /tmp/split_trackingA.26258 -v checkit starting with: VERIFY Verify XIOR Stream: /tmp/split_trackingA.26258 Working dir: /mnt/split_tracking Issuing a sync to force data to disk splitting off leg from raid with tracking... taft-01: lvconvert --splitmirrors 1 --trackchanges split_image/split_tracking +++ Mounting and verifying split image data +++ mount: block device /dev/mapper/split_image-split_tracking_rimage_2 is write-protected, mounting read-only Checking files on /mnt/split_tracking_rimage_2 /usr/tests/sts-rhel6.3/bin/checkit -w /mnt/split_tracking_rimage_2 -f /tmp/split_trackingA.26258 -v checkit starting with: VERIFY Verify XIOR Stream: /tmp/split_trackingA.26258 Working dir: /mnt/split_tracking_rimage_2 Writing new data to the raid and then merging back the split off image Writing files to /mnt/split_tracking /usr/tests/sts-rhel6.3/bin/checkit -w /mnt/split_tracking -f /tmp/split_trackingB.26258 -n 500 checkit starting with: CREATE Num files: 500 Random Seed: 17347 Verify XIOR Stream: /tmp/split_trackingB.26258 Working dir: /mnt/split_tracking Checking files on /mnt/split_tracking /usr/tests/sts-rhel6.3/bin/checkit -w /mnt/split_tracking -f /tmp/split_trackingB.26258 -v checkit starting with: VERIFY Verify XIOR Stream: /tmp/split_trackingB.26258 Working dir: /mnt/split_tracking Writing files to /mnt/split_tracking /usr/tests/sts-rhel6.3/bin/checkit -w /mnt/split_tracking -f /tmp/split_trackingC.26258 -n 500 checkit starting with: CREATE Num files: 500 Random Seed: 17351 Verify XIOR Stream: /tmp/split_trackingC.26258 Working dir: /mnt/split_tracking Checking files on /mnt/split_tracking /usr/tests/sts-rhel6.3/bin/checkit -w /mnt/split_tracking -f /tmp/split_trackingC.26258 -v checkit starting with: VERIFY Verify XIOR Stream: /tmp/split_trackingC.26258 Working dir: /mnt/split_tracking Merge split off image split_image/split_tracking_rimage_2 back into the raid lvconvert --merge split_image/split_tracking_rimage_2 Waiting until all mirror|raid volumes become fully syncd... 1/1 mirror(s) are fully synced: ( 100.00% ) Issuing a sync to force data to disk AGAIN, splitting off leg from raid with tracking... taft-01: lvconvert --splitmirrors 1 --trackchanges split_image/split_tracking +++ Mounting and verifying split image data +++ mount: block device /dev/mapper/split_image-split_tracking_rimage_2 is write-protected, mounting read-only Checking files on /mnt/split_tracking_rimage_2 /usr/tests/sts-rhel6.3/bin/checkit -w /mnt/split_tracking_rimage_2 -f /tmp/split_trackingA.26258 -v checkit starting with: VERIFY Verify XIOR Stream: /tmp/split_trackingA.26258 Working dir: /mnt/split_tracking_rimage_2 Checking files on /mnt/split_tracking_rimage_2 /usr/tests/sts-rhel6.3/bin/checkit -w /mnt/split_tracking_rimage_2 -f /tmp/split_trackingB.26258 -v checkit starting with: VERIFY Verify XIOR Stream: /tmp/split_trackingB.26258 Working dir: /mnt/split_tracking_rimage_2 Checking files on /mnt/split_tracking_rimage_2 /usr/tests/sts-rhel6.3/bin/checkit -w /mnt/split_tracking_rimage_2 -f /tmp/split_trackingC.26258 -v checkit starting with: VERIFY Verify XIOR Stream: /tmp/split_trackingC.26258 Working dir: /mnt/split_tracking_rimage_2 Merge split off image split_image/split_tracking_rimage_2 back so it can be deleted lvconvert --merge split_image/split_tracking_rimage_2 Deactivating mirror split_tracking... and removing 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/RHSA-2012-0862.html |