Bug 1160044
| Summary: | [RFE] LVM cache: Ability to resize cache origin volume | |||
|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | Jonathan Earl Brassow <jbrassow> | |
| Component: | lvm2 | Assignee: | Zdenek Kabelac <zkabelac> | |
| lvm2 sub component: | Cache Logical Volumes | QA Contact: | cluster-qe <cluster-qe> | |
| Status: | CLOSED ERRATA | Docs Contact: | ||
| Severity: | unspecified | |||
| Priority: | medium | CC: | agk, cmackows, cmarthal, gsitlani, heinzm, jbrassow, jmagrini, mcsontos, msnitzer, nperic, pasik, prajnoha, rmadhuso, teigland, torkil, zkabelac | |
| Version: | 8.1 | Keywords: | FutureFeature, RFE, Triaged | |
| Target Milestone: | rc | |||
| Target Release: | 8.2 | |||
| Hardware: | Unspecified | |||
| OS: | Unspecified | |||
| Whiteboard: | ||||
| Fixed In Version: | lvm2-2.03.14-1.el8 | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | ||
| Clone Of: | ||||
| : | 1189111 1959609 (view as bug list) | Environment: | ||
| Last Closed: | 2022-05-10 15:21:57 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: | ||||
| Bug Depends On: | ||||
| Bug Blocks: | 1119326, 1186924, 1189111, 1959609 | |||
|
Description
Jonathan Earl Brassow
2014-11-03 22:17:15 UTC
Support for resize of cached LV (_corigin) is now supported via Bug 1899720 Comment 1. Should this bug include extending an LV with attached writecache in addition to extending an LV with attached cache? These appear to be the two commits in which cache and writecache extending were enabled: https://sourceware.org/git/?p=lvm2.git;a=commit;h=5ec24dfb0bb0c9e48d59d6fbb83262a7087964e1 https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=ac09fa08aa7a10cc3f807830de5d625d499ed1b1 commit 5ec24dfb0bb0c9e48d59d6fbb83262a7087964e1 Author: Zdenek Kabelac <zkabelac> Date: Sun Feb 7 20:12:00 2021 +0100 lv_resize: support resizing of cached volumes Automatically figure out resizable layer in the LV stack and resize it online. Split check for reshaped raids and postpone removal of unused space after finished reshaping after metadata archiving. Drop warning about unsupported automatic resize of monitored thin-pool. Currently there is not yet support for resize of writecache. commit ac09fa08aa7a10cc3f807830de5d625d499ed1b1 Author: Zdenek Kabelac <zkabelac> Date: Sat Feb 20 22:22:51 2021 +0100 lvextend: enable resize of writecached LV I suspect we'll need some further tests developed, though, since I'm not seeing much right now. commit b86eb913c18ca67415521b8003c04adf41a5496c seems to just verify that the lvextend command permits a dm-cache to be extended when it's used for thin pool data. Created bug 1957892 for lvextend with writecache, so this bug is only for lvextend with cache. Created a new test "lvextend-caches" that tests lvextend of an LV with an attached cache|writecache: https://sourceware.org/git/?p=lvm2.git;a=blob;f=test/shell/lvextend-caches.sh Updating this RFE to reflect that in 8.5 this is about the ability to resize the cache origin volume, and not the internal cache pool volumes. [root@hayes-02 ~]# lvs -a -o +devices LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert Devices corigin cache_sanity owi-aoC--- 5.95g [pool_cpool] [corigin_corig] 0.42 12.92 0.00 corigin_corig(0) [corigin_corig] cache_sanity owi-aoC--- 5.95g /dev/sdk1(0) [lvol0_pmspare] cache_sanity ewi------- 12.00m /dev/sdb1(0) online_resize cache_sanity swi-a-s--- 500.00m corigin 0.14 /dev/sdb1(3) [pool_cpool] cache_sanity Cwi---C--- 4.00g 0.42 12.92 0.00 pool_cpool_cdata(0) [pool_cpool_cdata] cache_sanity Cwi-ao---- 4.00g /dev/sdf1(0) [pool_cpool_cmeta] cache_sanity ewi-ao---- 12.00m /dev/sdf1(1024) [root@hayes-02 ~]# lvextend -L +500M /dev/cache_sanity/corigin Size of logical volume cache_sanity/corigin_corig changed from 5.46 GiB (1399 extents) to 5.95 GiB (1524 extents). [root@hayes-02 ~]# lvextend -L +500M -r /dev/cache_sanity/pool_cpool Can't resize internal logical volume cache_sanity/pool_cpool. [root@hayes-02 ~]# lvextend -L +500M -r /dev/cache_sanity/pool_cpool_cdata Can't resize internal logical volume cache_sanity/pool_cpool_cdata. [root@hayes-02 ~]# lvextend -L +500M -r /dev/cache_sanity/pool_cpool_cmeta Can't resize internal logical volume cache_sanity/pool_cpool_cmeta. Bug 1959626 likely blocks the verification of this feature. Marking Verified:Tested in the latest lvm rpms. kernel-4.18.0-305.7.el8.kpq1 BUILT: Mon May 17 12:55:07 CDT 2021 lvm2-2.03.12-2.el8 BUILT: Tue Jun 1 06:55:37 CDT 2021 lvm2-libs-2.03.12-2.el8 BUILT: Tue Jun 1 06:55:37 CDT 2021 device-mapper-1.02.177-2.el8 BUILT: Tue Jun 1 06:55:37 CDT 2021 device-mapper-libs-1.02.177-2.el8 BUILT: Tue Jun 1 06:55:37 CDT 2021 SCENARIO - [open_XFS_on_cache_origin_fsadm_resize_attempts] Create a cached XFS filesystem, mount it, snapshot it, and resize the ORIGIN while online *** Cache info for this scenario *** * origin (slow): /dev/sdf1 * pool (fast): /dev/sdj1 ************************************ Adding "slow" and "fast" tags to corresponding pvs Create origin (slow) volume lvcreate --yes --wipesignatures y -L 4G -n corigin cache_sanity @slow Create cache data and cache metadata (fast) volumes lvcreate --yes -L 4G -n pool cache_sanity @fast lvcreate --yes -L 12M -n pool_meta cache_sanity @fast Create cache pool volume by combining the cache data and cache metadata (fast) volumes with policy: mq mode: writethrough lvconvert --yes --type cache-pool --cachepolicy mq --cachemode writethrough -c 32 --poolmetadata cache_sanity/pool_meta cache_sanity/pool WARNING: Converting cache_sanity/pool and cache_sanity/pool_meta to cache pool's data and metadata volumes with metadata wiping. THIS WILL DESTROY CONTENT OF LOGICAL VOLUME (filesystem etc.) Create cached volume by combining the cache pool (fast) and origin (slow) volumes lvconvert --yes --type cache --cachemetadataformat 2 --cachepool cache_sanity/pool cache_sanity/corigin Placing an XFS filesystem on origin volume Mounting origin volume Writing files to /mnt/corigin Checking files on /mnt/corigin Making snapshot of origin volume lvcreate --yes -s /dev/cache_sanity/corigin -c 16 -n online_resize -L 500M Resize the open snapshoted ORIGIN XFS filesystem multiple times with lvextend/fsadm on hayes-01 RESIZING CACHE VOLUMES IS NOW SUPPORTED IN 8.5 (lvextend -L +500M -r /dev/cache_sanity/corigin) FS: 3848 >= 4369 LV: 4194304.00 eq 4706304.00 Checking files on /mnt/corigin (lvextend -L +500M -r /dev/cache_sanity/corigin) FS: 4369 >= 4889 LV: 4706304.00 eq 5218304.00 Checking files on /mnt/corigin (lvextend -L +500M -r /dev/cache_sanity/corigin) FS: 4889 >= 5410 LV: 5218304.00 eq 5730304.00 Checking files on /mnt/corigin (lvextend -L +500M -r /dev/cache_sanity/corigin) FS: 5410 >= 5930 LV: 5730304.00 eq 6242304.00 Checking files on /mnt/corigin (lvextend -L +500M -r /dev/cache_sanity/corigin) FS: 5930 >= 6451 LV: 6242304.00 eq 6754304.00 Checking files on /mnt/corigin (lvextend -L +500M -r /dev/cache_sanity/corigin) FS: 6451 >= 6971 LV: 6754304.00 eq 7266304.00 Checking files on /mnt/corigin (lvextend -L +500M -r /dev/cache_sanity/corigin) FS: 6971 >= 7492 LV: 7266304.00 eq 7778304.00 Checking files on /mnt/corigin (lvextend -L +500M -r /dev/cache_sanity/corigin) FS: 7492 >= 8013 LV: 7778304.00 eq 8290304.00 Checking files on /mnt/corigin (lvextend -L +500M -r /dev/cache_sanity/corigin) FS: 8013 >= 8533 LV: 8290304.00 eq 8802304.00 Checking files on /mnt/corigin (lvextend -L +500M -r /dev/cache_sanity/corigin) FS: 8533 >= 9054 LV: 8802304.00 eq 9314304.00 Checking files on /mnt/corigin Removing snap volume cache_sanity/online_resize lvremove -f /dev/cache_sanity/online_resize Uncaching cache origin (lvconvert --yes --uncache cache_sanity/corigin) from cache pool Removing cache origin volume cache_sanity/corigin lvremove -f /dev/cache_sanity/corigin Marking Verified in the latest rpms. kernel-4.18.0-348.4.el8.kpq0 BUILT: Wed Oct 27 15:00:32 CDT 2021 lvm2-2.03.14-1.el8 BUILT: Wed Oct 20 10:18:17 CDT 2021 lvm2-libs-2.03.14-1.el8 BUILT: Wed Oct 20 10:18:17 CDT 2021 SCENARIO - [open_EXT4_on_cache_origin_fsadm_resize_attempts] Create a cached EXT4 filesystem, mount it, snapshot it, and resize the ORIGIN while online *** Cache info for this scenario *** * origin (slow): /dev/sde1 * pool (fast): /dev/sdj1 ************************************ Adding "slow" and "fast" tags to corresponding pvs Create origin (slow) volume lvcreate --yes --wipesignatures y -L 4G -n corigin cache_sanity @slow Create cache data and cache metadata (fast) volumes lvcreate --yes -L 4G -n pool cache_sanity @fast lvcreate --yes -L 12M -n pool_meta cache_sanity @fast Create cache pool volume by combining the cache data and cache metadata (fast) volumes with policy: cleaner mode: writethrough lvconvert --yes --type cache-pool --cachepolicy cleaner --cachemode writethrough -c 64 --poolmetadata cache_sanity/pool_meta cache_sanity/pool WARNING: Converting cache_sanity/pool and cache_sanity/pool_meta to cache pool's data and metadata volumes with metadata wiping. THIS WILL DESTROY CONTENT OF LOGICAL VOLUME (filesystem etc.) Create cached volume by combining the cache pool (fast) and origin (slow) volumes lvconvert --yes --type cache --cachemetadataformat 1 --cachepool cache_sanity/pool cache_sanity/corigin Placing an EXT filesystem on origin volume mke2fs 1.45.6 (20-Mar-2020) Mounting origin volume Writing files to /mnt/corigin Checking files on /mnt/corigin Making snapshot of origin volume lvcreate --yes -s /dev/cache_sanity/corigin -c 16 -n online_resize -L 500M Resize the open snapshoted ORIGIN EXT4 filesystem multiple times with lvextend/fsadm on hayes-01 RESIZING CACHE VOLUMES IS NOW SUPPORTED IN 8.5 (lvextend -L +500M -r /dev/cache_sanity/corigin) resize2fs 1.45.6 (20-Mar-2020) FS: 3770 >= 4286 LV: 4194304.00 eq 4706304.00 Checking files on /mnt/corigin (lvextend -L +500M -r /dev/cache_sanity/corigin) resize2fs 1.45.6 (20-Mar-2020) FS: 4286 >= 4802 LV: 4706304.00 eq 5218304.00 Checking files on /mnt/corigin (lvextend -L +500M -r /dev/cache_sanity/corigin) resize2fs 1.45.6 (20-Mar-2020) FS: 4802 >= 5317 LV: 5218304.00 eq 5730304.00 Checking files on /mnt/corigin (lvextend -L +500M -r /dev/cache_sanity/corigin) resize2fs 1.45.6 (20-Mar-2020) FS: 5317 >= 5833 LV: 5730304.00 eq 6242304.00 Checking files on /mnt/corigin (lvextend -L +500M -r /dev/cache_sanity/corigin) resize2fs 1.45.6 (20-Mar-2020) FS: 5833 >= 6347 LV: 6242304.00 eq 6754304.00 Checking files on /mnt/corigin (lvextend -L +500M -r /dev/cache_sanity/corigin) resize2fs 1.45.6 (20-Mar-2020) FS: 6347 >= 6863 LV: 6754304.00 eq 7266304.00 Checking files on /mnt/corigin (lvextend -L +500M -r /dev/cache_sanity/corigin) resize2fs 1.45.6 (20-Mar-2020) WARNING: Heartbeat did not respond at start of command. Check btimed service on remote host FS: 6863 >= 7379 LV: 7266304.00 eq 7778304.00 Checking files on /mnt/corigin (lvextend -L +500M -r /dev/cache_sanity/corigin) resize2fs 1.45.6 (20-Mar-2020) FS: 7379 >= 7895 LV: 7778304.00 eq 8290304.00 Checking files on /mnt/corigin (lvextend -L +500M -r /dev/cache_sanity/corigin) resize2fs 1.45.6 (20-Mar-2020) FS: 7895 >= 8411 LV: 8290304.00 eq 8802304.00 Checking files on /mnt/corigin (lvextend -L +500M -r /dev/cache_sanity/corigin) resize2fs 1.45.6 (20-Mar-2020) FS: 8411 >= 8926 LV: 8802304.00 eq 9314304.00 Checking files on /mnt/corigin Removing snap volume cache_sanity/online_resize lvremove -f /dev/cache_sanity/online_resize Uncaching cache origin (lvconvert --yes --uncache cache_sanity/corigin) from cache pool Removing cache origin volume cache_sanity/corigin lvremove -f /dev/cache_sanity/corigin 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-2022:2038 |