Description of problem: [root@hayes-02 ~]# lvconvert --yes --type writecache --cachevol seven/wpool seven/worigin Logical volume seven/worigin now has write cache. [root@hayes-02 ~]# lvs -a -o +devices LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert Devices worigin seven Cwi---C--- 1.00g [wpool_cvol] [worigin_wcorig] worigin_wcorig(0) [worigin_wcorig] seven owi---C--- 1.00g /dev/sdh1(0) [wpool_cvol] seven Cwi---C--- 200.00m /dev/sdg1(0) [root@hayes-02 ~]# lvchange -ay seven # check that no active volumes can be split [root@hayes-02 ~]# vgsplit --config devices/scan_lvs=1 seven ten /dev/sdh1 /dev/sdg1 Logical volume seven/worigin must be inactive. [root@hayes-02 ~]# lvchange -an seven # check that _cvol PV can't be split w/o the _wcorig [root@hayes-02 ~]# vgsplit --config devices/scan_lvs=1 seven ten /dev/sdg1 Can't split LV worigin between two Volume Groups # same check as above but reversed (this should provide the same error as above [root@hayes-02 ~]# vgsplit --config devices/scan_lvs=1 seven ten /dev/sdh1 Unknown logical volume wpool_cvol specified for writecache in segment segment1 of logical volume worigin. Couldn't read all logical volumes for volume group ten. # check that it can be done if both PVs are provided [root@hayes-02 ~]# vgsplit --config devices/scan_lvs=1 seven ten /dev/sdg1 /dev/sdh1 New volume group "ten" successfully split from "seven" [root@hayes-02 ~]# lvs -a -o +devices LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert Devices worigin ten Cwi---C--- 1.00g [wpool_cvol] [worigin_wcorig] worigin_wcorig(0) [worigin_wcorig] ten owi---C--- 1.00g /dev/sdh1(0) [wpool_cvol] ten Cwi---C--- 200.00m /dev/sdg1(0) Version-Release number of selected component (if applicable): kernel-4.18.0-151.el8 BUILT: Fri Nov 15 13:14:53 CST 2019 lvm2-2.03.06-0.2.el8 BUILT: Mon Nov 18 06:39:12 CST 2019 lvm2-libs-2.03.06-0.2.el8 BUILT: Mon Nov 18 06:39:12 CST 2019 lvm2-dbusd-2.03.06-0.2.el8 BUILT: Mon Nov 18 06:39:12 CST 2019 lvm2-lockd-2.03.06-0.2.el8 BUILT: Mon Nov 18 06:39:12 CST 2019 boom-boot-1.0-0.2.20190610git246b116.el8 BUILT: Mon Jun 10 08:22:40 CDT 2019 device-mapper-1.02.165-0.2.el8 BUILT: Mon Nov 18 06:39:12 CST 2019 device-mapper-libs-1.02.165-0.2.el8 BUILT: Mon Nov 18 06:39:12 CST 2019 device-mapper-event-1.02.165-0.2.el8 BUILT: Mon Nov 18 06:39:12 CST 2019 device-mapper-event-libs-1.02.165-0.2.el8 BUILT: Mon Nov 18 06:39:12 CST 2019 device-mapper-persistent-data-0.8.5-2.el8 BUILT: Wed Jun 5 10:28:04 CDT 2019
fixed in master https://sourceware.org/git/?p=lvm2.git;a=commit;h=379a7e1288a5e7a15cd2872c074b219992575b4d # lvs -a foo -o+devices LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert Devices [fast_cvol] foo Cwi---C--- 32.00m /dev/sdg(0) main foo Cwi---C--- 64.00m [fast_cvol] [main_wcorig] main_wcorig(0) [main_wcorig] foo owi---C--- 64.00m /dev/sde(0) # vgsplit foo foo2 /dev/sdg Can't split LV main between two Volume Groups # vgsplit foo foo2 /dev/sde Cannot split cache origin foo2/main_wcorig and its cachevol foo/fast_cvol into separate VGs. # vgsplit foo foo2 /dev/sde /dev/sdg New volume group "foo2" successfully split from "foo"
Corey, could you ack please?
Verified with latest RPMs lvm2-2.03.08-2.el8.x86_64 # lvs vg -a -o+devices LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert Devices main vg Cwi---C--- 300.00m [pool_cvol] [main_wcorig] main_wcorig(0) [main_wcorig] vg owi---C--- 300.00m /dev/sdc(0) [pool_cvol] vg Cwi---C--- 200.00m /dev/sdd(0) # vgsplit vg newvg /dev/sdc Can't split LV main between two Volume Groups # vgsplit vg newvg /dev/sdd Can't split LV main between two Volume Groups # vgsplit vg newvg /dev/sdd /dev/sdc New volume group "newvg" successfully split from "vg"
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/RHEA-2020:1881