Bug 1394048
| Summary: | LVM RAID: Ability to reduce the size of a RAID LV | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Jonathan Earl Brassow <jbrassow> |
| Component: | lvm2 | Assignee: | Heinz Mauelshagen <heinzm> |
| lvm2 sub component: | Mirroring and RAID | QA Contact: | cluster-qe <cluster-qe> |
| Status: | CLOSED ERRATA | Docs Contact: | Steven J. Levine <slevine> |
| Severity: | unspecified | ||
| Priority: | unspecified | CC: | agk, cmarthal, heinzm, jbrassow, msnitzer, prajnoha, prockai, rbednar, slevine, zkabelac |
| Version: | 7.2 | Keywords: | FutureFeature |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | lvm2-2.02.169-1.el7 | Doc Type: | Enhancement |
| Doc Text: |
LVM supports reducing the size of a RAID logical volume
As of Red Hat Enterprise Linux 7,4, you can use the "lvreduce" or "lvresize" command to reduce the size of a RAID logical volume.
|
Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-08-01 21:49:49 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: | 1385242, 1394039, 1411727 | ||
|
Description
Jonathan Earl Brassow
2016-11-10 21:54:18 UTC
Prepared for review/integration as lvresize/lvreduce functionality on lvm2 upstream branch dev-lvmguy-raid-takeover-reshape-resize_work Upstream commit 55eaabd1183042b8e03b3a969eadf624623c4b62 Verified with latest rpms, ability to reduce size of raid has been added.
Tested with raid0, raid1, raid4, raid5, raid6 and raid10.
# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
root rhel_virt-145 -wi-ao---- 6.70g
swap rhel_virt-145 -wi-ao---- 876.00m
raid0 vg rwi-a-r--- 1.00g
raid1 vg rwi-a-r--- 1.00g 100.00
raid10 vg rwi-a-r--- 1.00g 100.00
raid4 vg rwi-a-r--- 1.00g 100.00
raid5 vg rwi-a-r--- 1.00g 100.00
raid6 vg rwi-a-r--- 1.01g 100.00
# for i in raid0 raid1 raid4 raid5 raid6 raid10; do lvreduce -L500M vg/$i --force;done
WARNING: Reducing active logical volume to 500.00 MiB.
THIS MAY DESTROY YOUR DATA (filesystem etc.)
Size of logical volume vg/raid0 changed from 1.00 GiB (256 extents) to 500.00 MiB (125 extents).
Logical volume vg/raid0 successfully resized.
WARNING: Reducing active logical volume to 500.00 MiB.
THIS MAY DESTROY YOUR DATA (filesystem etc.)
Size of logical volume vg/raid1 changed from 1.00 GiB (256 extents) to 500.00 MiB (125 extents).
Logical volume vg/raid1 successfully resized.
WARNING: Reducing active logical volume to 500.00 MiB.
THIS MAY DESTROY YOUR DATA (filesystem etc.)
Size of logical volume vg/raid4 changed from 1.00 GiB (256 extents) to 500.00 MiB (125 extents).
Logical volume vg/raid4 successfully resized.
WARNING: Reducing active logical volume to 500.00 MiB.
THIS MAY DESTROY YOUR DATA (filesystem etc.)
Size of logical volume vg/raid5 changed from 1.00 GiB (256 extents) to 500.00 MiB (125 extents).
Logical volume vg/raid5 successfully resized.
WARNING: Reducing active logical volume to 500.00 MiB.
THIS MAY DESTROY YOUR DATA (filesystem etc.)
Size of logical volume vg/raid6 changed from 1.00 GiB (256 extents) to 500.00 MiB (125 extents).
Logical volume vg/raid6 successfully resized.
WARNING: Reducing active logical volume to 500.00 MiB.
THIS MAY DESTROY YOUR DATA (filesystem etc.)
Size of logical volume vg/raid10 changed from 1.00 GiB (256 extents) to 500.00 MiB (125 extents).
Logical volume vg/raid10 successfully resized.
# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
root rhel_virt-145 -wi-ao---- 6.70g
swap rhel_virt-145 -wi-ao---- 876.00m
raid0 vg rwi-a-r--- 504.00m
raid1 vg rwi-a-r--- 500.00m 100.00
raid10 vg rwi-a-r--- 504.00m 100.00
raid4 vg rwi-a-r--- 504.00m 100.00
raid5 vg rwi-a-r--- 504.00m 100.00
raid6 vg rwi-a-r--- 504.00m 100.00
3.10.0-640.el7.x86_64
lvm2-2.02.169-3.el7 BUILT: Wed Mar 29 16:17:46 CEST 2017
lvm2-libs-2.02.169-3.el7 BUILT: Wed Mar 29 16:17:46 CEST 2017
lvm2-cluster-2.02.169-3.el7 BUILT: Wed Mar 29 16:17:46 CEST 2017
device-mapper-1.02.138-3.el7 BUILT: Wed Mar 29 16:17:46 CEST 2017
device-mapper-libs-1.02.138-3.el7 BUILT: Wed Mar 29 16:17:46 CEST 2017
device-mapper-event-1.02.138-3.el7 BUILT: Wed Mar 29 16:17:46 CEST 2017
device-mapper-event-libs-1.02.138-3.el7 BUILT: Wed Mar 29 16:17:46 CEST 2017
device-mapper-persistent-data-0.7.0-0.1.rc6.el7 BUILT: Mon Mar 27 17:15:46 CEST 2017
cmirror-2.02.169-3.el7 BUILT: Wed Mar 29 16:17:46 CEST 2017
jbrassow: As per our IRC discussion, I have marked this BZ for inclusion in the 7.4 release notes and I have written up a description. Can you check that over to be sure it's correct? Steven (In reply to Steven J. Levine from comment #10) > jbrassow: > > As per our IRC discussion, I have marked this BZ for inclusion in the 7.4 > release notes and I have written up a description. Can you check that over > to be sure it's correct? > > Steven yes, looks fine. A user can reduce the size of a RAID LV with 'lvreduce' or 'lvresize'. I added lvresize to the description for the release notes. 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. https://access.redhat.com/errata/RHBA-2017:2222 |