Bug 1906412
| Summary: | "Detach cachevol before removing" error when attempting to uncache writecache pool | ||||||
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| Product: | Red Hat Enterprise Linux 8 | Reporter: | Corey Marthaler <cmarthal> | ||||
| Component: | lvm2 | Assignee: | David Teigland <teigland> | ||||
| lvm2 sub component: | Cache Logical Volumes | QA Contact: | cluster-qe <cluster-qe> | ||||
| Status: | CLOSED ERRATA | Docs Contact: | |||||
| Severity: | medium | ||||||
| Priority: | high | CC: | agk, heinzm, jbrassow, mcsontos, msnitzer, prajnoha, teigland, zkabelac | ||||
| Version: | 8.4 | ||||||
| Target Milestone: | rc | ||||||
| Target Release: | 8.0 | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | lvm2-2.03.11-0.4.20201222gitb84a992.el8 | Doc Type: | If docs needed, set a value | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2021-05-18 15:02:04 UTC | Type: | Bug | ||||
| 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
2020-12-10 13:19:18 UTC
Created attachment 1738192 [details]
verbose uncache attempt
fix https://sourceware.org/git/?p=lvm2.git;a=commit;h=5dbe2fdd9dd783c2911a5375d6fdec86118af280 Note this is a fix for an 8.4 feature being added in bug 1805896. Moving to Verified:Tested based on results with the following build. kernel-4.18.0-277.el8 BUILT: Wed Jan 20 09:06:28 CST 2021 lvm2-2.03.11-1.el8 BUILT: Fri Jan 8 05:21:07 CST 2021 lvm2-libs-2.03.11-1.el8 BUILT: Fri Jan 8 05:21:07 CST 2021 ============================================================ Iteration 10 of 10 started at Thu Jan 28 18:34:19 CST 2021 ============================================================ SCENARIO - [simple_writecache_snap_merge] Create snaps of writecache origin with fs data, verify data on snaps, change data on origin, merge data back to origin, verify origin data *** Writecache info for this scenario *** * origin (slow): /dev/sdf * pool (fast): /dev/sdg ************************************ Adding "slow" and "fast" tags to corresponding pvs Create origin (slow) volume lvcreate --yes --wipesignatures y -L 4G -n cworigin writecache_sanity @slow Create writecache cvol (fast) volumes lvcreate --yes -L 2G -n pool writecache_sanity @fast Deactivate *ONLY* fast pool before conversion to write cache (SEE bug 1185347) Create writecached volume by combining the cache pool (fast) and origin (slow) volumes lvconvert --yes --type writecache --cachesettings 'low_watermark=25 high_watermark=51 writeback_jobs=2914 autocommit_blocks=1920 autocommit_time=2549' --cachevol writecache_sanity/pool writecache_sanity/cworigin Placing an xfs filesystem on origin volume Mounting origin volume Writing files to /mnt/cworigin Checking files on /mnt/cworigin Making a snapshot of the origin volume, mounting, and verifying original data ( ** This is again enabled in rhel8.3 ** ) lvcreate --yes -s /dev/writecache_sanity/cworigin -c 64 -n merge -L 500M +++ Mounting and verifying snapshot merge data +++ Checking files on /mnt/merge Writing new origin data and then merging back the snapshot volume Writing files to /mnt/cworigin Checking files on /mnt/cworigin Umount origin volume Deactivating volume: cworigin Merge snapshot writecache_sanity/merge back into the origin lvconvert --yes --merge writecache_sanity/merge Activating volume: cworigin Although the activate passed, errors were found in its output LINE=18:39:33.443772 lvchange[309768] label/label.c:824 Scanned devices: read errors 0 process errors 0 failed 0 Although the activate passed, errors were found in its output LINE=18:39:36.542565 lvchange[309768] device_mapper/libdm-deptree.c:3051 Adding target to (253:11): 0 8388608 error Although the activate passed, errors were found in its output LINE=18:39:36.734025 lvchange[309768] notify/lvmnotify.c:69 D-Bus notification failed: The name com.redhat.lvmdbus1 was not provided by any .service files Waiting for the snap merge to complete... Failed to find logical volume "writecache_sanity/merge" Mount and verify the proper data now exists on the origin Checking files on /mnt/cworigin Uncaching cache origin (lvconvert --yes --uncache writecache_sanity/cworigin) from cache origin Removing cache origin volume writecache_sanity/cworigin lvremove -f /dev/writecache_sanity/cworigin Final verification with the latest rpms. kernel-4.18.0-283.el8 BUILT: Thu Feb 4 05:30:59 CST 2021 lvm2-2.03.11-4.el8 BUILT: Thu Feb 11 04:35:23 CST 2021 lvm2-libs-2.03.11-4.el8 BUILT: Thu Feb 11 04:35:23 CST 2021 ============================================================ Iteration 10 of 10 started at Mon Feb 15 13:58:46 CST 2021 ============================================================ SCENARIO - [simple_writecache_snap_merge] Create snaps of writecache origin with fs data, verify data on snaps, change data on origin, merge data back to origin, verify origin data *** Writecache info for this scenario *** * origin (slow): /dev/sdi * pool (fast): /dev/sde ************************************ Adding "slow" and "fast" tags to corresponding pvs Create origin (slow) volume lvcreate --yes --wipesignatures y -L 4G -n cworigin writecache_sanity @slow Create writecache cvol (fast) volumes lvcreate --yes -L 2G -n pool writecache_sanity @fast Deactivate *ONLY* fast pool before conversion to write cache (SEE bug 1185347) Create writecached volume by combining the cache pool (fast) and origin (slow) volumes lvconvert --yes --type writecache --cachesettings 'low_watermark=48 high_watermark=94 writeback_jobs=1973 autocommit_blocks=1612 autocommit_time=1971' --cachevol writecache_sanity/pool writecache_sanity/cworigin Placing an xfs filesystem on origin volume Mounting origin volume Writing files to /mnt/cworigin Checking files on /mnt/cworigin Making a snapshot of the origin volume, mounting, and verifying original data ( ** This is again enabled in rhel8.3 ** ) lvcreate --yes -s /dev/writecache_sanity/cworigin -c 64 -n merge -L 500M +++ Mounting and verifying snapshot merge data +++ Checking files on /mnt/merge Writing new origin data and then merging back the snapshot volume Writing files to /mnt/cworigin Checking files on /mnt/cworigin Umount origin volume Deactivating volume: cworigin Merge snapshot writecache_sanity/merge back into the origin lvconvert --yes --merge writecache_sanity/merge Activating volume: cworigin Waiting for the snap merge to complete... Mount and verify the proper data now exists on the origin Checking files on /mnt/cworigin Uncaching cache origin (lvconvert --yes --uncache writecache_sanity/cworigin) from cache origin 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 (lvm2 bug fix and enhancement update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2021:1659 |