Bug 1698246
| Summary: | a tracked split raid image can not be permanently split using the --name arg like implied in man page and docs | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | Corey Marthaler <cmarthal> |
| Component: | lvm2 | Assignee: | Heinz Mauelshagen <heinzm> |
| lvm2 sub component: | Mirroring and RAID | QA Contact: | cluster-qe <cluster-qe> |
| Status: | CLOSED NOTABUG | Docs Contact: | |
| Severity: | low | ||
| Priority: | high | CC: | agk, heinzm, jbrassow, msnitzer, prajnoha, rbednar, rhandlin, slevine, zkabelac |
| Version: | 8.0 | Flags: | pm-rhel:
mirror+
|
| Target Milestone: | rc | ||
| Target Release: | 8.0 | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2020-02-18 17:48:04 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: | |||
Corey, WFM on RHEL8 and RHEL7, closing. Please reopen if you can reproduce, thanks. [root@vm165 ~]# lvm version LVM version: 2.03.02(2)-RHEL8 (2019-01-04) Library version: 1.02.155-RHEL8 (2019-01-04) Driver version: 4.39.0 Configuration: ./configure --build=x86_64-redhat-linux-gnu --host=x86_64-redhat-linux-gnu --program-prefix= --disable-dependency-tracking --prefix=/usr --exec-prefix=/usr --bi ndir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib64 --libexecdir=/usr/libexec --localstatedir=/var --sharedstate dir=/var/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-default-dm-run-dir=/run --with-default-run-dir=/run/lvm --with-default-pid-dir=/run --with-default-locking-di r=/run/lock/lvm --with-usrlibdir=/usr/lib64 --enable-fsadm --enable-write_install --with-user= --with-group= --with-device-uid=0 --with-device-gid=6 --with-device-mode=0660 --enab le-pkgconfig --enable-cmdlib --enable-dmeventd --enable-blkid_wiping --with-cluster=internal --enable-cmirrord --with-udevdir=/usr/lib/udev/rules.d --enable-udev_sync --with-thin= internal --with-cache=internal --enable-lvmpolld --enable-lvmlockd-dlm --enable-lvmlockd-sanlock --enable-dbus-service --enable-notify-dbus --enable-dmfilemapd --with-vdo=internal --with-vdo-format=/usr/bin/vdoformat --disable-silent-rules [root@vm165 ~]# uname -r 4.18.0-80.el8.x86_64 [root@vm165 ~]# lvcreate -y -m2 -L128 -nr1 t Logical volume "r1" created. [root@vm165 ~]# lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert root rhel_vm165 -wi-ao---- <45.02g swap rhel_vm165 -wi-ao---- <3.98g r1 t rwi-a-r--- 128.00m 100.00 [root@vm165 ~]# lvconvert --splitmirror 1 --trackchanges t/r1 t/r1_rimage_2 split from t/r1 for read-only purposes. Use 'lvconvert --merge t/r1_rimage_2' to merge back into t/r1. [root@vm165 ~]# lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert root rhel_vm165 -wi-ao---- <45.02g swap rhel_vm165 -wi-ao---- <3.98g r1 t rwi-a-r--- 128.00m 100.00 r1_rimage_2 t Iri-a-r--- 128.00m [root@vm165 ~]# lvconvert --merge t/r1_rimage_2 t/r1_rimage_2 successfully merged back into t/r1. [root@vm165 ~]# lvs -a LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert root rhel_vm165 -wi-ao---- <45.02g swap rhel_vm165 -wi-ao---- <3.98g r1 t rwi-a-r--- 128.00m 100.00 [r1_rimage_0] t iwi-aor--- 128.00m [r1_rimage_1] t iwi-aor--- 128.00m [r1_rimage_2] t iwi-aor--- 128.00m [r1_rmeta_0] t ewi-aor--- 4.00m [r1_rmeta_1] t ewi-aor--- 4.00m [r1_rmeta_2] t ewi-aor--- 4.00m [root@vm235 ~]# uname -r 3.10.0-1062.el7.x86_64 [root@vm235 ~]# lvm version LVM version: 2.02.185(2)-RHEL7 (2019-05-13) Library version: 1.02.158-RHEL7 (2019-05-13) Driver version: 4.37.1 Configuration: ./configure --build=x86_64-redhat-linux-gnu --host=x86_64-redhat-linux-gnu --program-prefix= --disable-dependency-tracking --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib64 --libexecdir=/usr/libexec --localstatedir=/var --sharedstatedir=/var/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-default-dm-run-dir=/run --with-default-run-dir=/run/lvm --with-default-pid-dir=/run --with-default-locking-dir=/run/lock/lvm --with-usrlibdir=/usr/lib64 --enable-lvm1_fallback --enable-fsadm --with-pool=internal --enable-write_install --with-user= --with-group= --with-device-uid=0 --with-device-gid=6 --with-device-mode=0660 --enable-pkgconfig --enable-applib --enable-cmdlib --enable-dmeventd --enable-blkid_wiping --enable-python2-bindings --with-cluster=internal --with-clvmd=corosync --enable-cmirrord --with-udevdir=/usr/lib/udev/rules.d --enable-udev_sync --with-thin=internal --enable-lvmetad --with-cache=internal --enable-lvmpolld --enable-lvmlockd-dlm --enable-lvmlockd-sanlock --enable-dmfilemapd [root@vm235 ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 1G 0 disk sdb 8:16 0 1G 0 disk sdc 8:32 0 1G 0 disk sdd 8:48 0 1G 0 disk vda 252:0 0 50G 0 disk ├─vda1 252:1 0 1G 0 part /boot └─vda2 252:2 0 49G 0 part ├─rhel_vm143-root 253:0 0 45.1G 0 lvm / └─rhel_vm143-swap 253:1 0 3.9G 0 lvm [SWAP] [root@vm235 ~]# vgcreate t /dev/sd* Physical volume "/dev/sda" successfully created. Physical volume "/dev/sdb" successfully created. Physical volume "/dev/sdc" successfully created. Physical volume "/dev/sdd" successfully created. Volume group "t" successfully created [root@vm235 ~]# lvcreate -y -m2 -L128 -nr1 t Logical volume "r1" created. [root@vm235 ~]# lvs -ao+segtype,devices LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert Type Devices root rhel_vm143 -wi-ao---- <45.12g linear /dev/vda2(992) swap rhel_vm143 -wi-ao---- <3.88g linear /dev/vda2(0) r1 t rwi-a-r--- 128.00m 100.00 raid1 r1_rimage_0(0),r1_rimage_1(0),r1_rimage_2(0) [r1_rimage_0] t iwi-aor--- 128.00m linear /dev/sda(1) [r1_rimage_1] t iwi-aor--- 128.00m linear /dev/sdb(1) [r1_rimage_2] t iwi-aor--- 128.00m linear /dev/sdc(1) [r1_rmeta_0] t ewi-aor--- 4.00m linear /dev/sda(0) [r1_rmeta_1] t ewi-aor--- 4.00m linear /dev/sdb(0) [r1_rmeta_2] t ewi-aor--- 4.00m linear /dev/sdc(0) [root@vm235 ~]# lvconvert --splitmirror 1 --trackchanges t/r1 t/r1_rimage_2 split from t/r1 for read-only purposes. Use 'lvconvert --merge t/r1_rimage_2' to merge back into t/r1. [root@vm235 ~]# lvconvert --merge t/r1_rimage_2 t/r1_rimage_2 successfully merged back into t/r1. |
Description of problem: I tried this on rhel7 and rhel8, so maybe this worked in like rhel6 or rhel5? From lvconvert(8): --trackchanges Can be used with --splitmirrors on a raid1 LV. This causes changes to the original raid1 LV to be tracked while the split images remain detached. This is a temporary state that allows the read-only detached image to be merged efficiently back into the raid1 LV later. Only the regions with changed data are resyn†chronized during merge. While a raid1 LV is tracking changes, operations on it are limited to merging the split image (see --mergemirrors) or permanently splitting the image (see --splitmirrors with --name. # First, there's a typo with the missing right ")". # Second, I don't know if this has ever been true. We even test to make sure a tracked change split can't be split again regardless of --name arg. # RHEL7.6 [root@mckinley-01 ~]# lvcreate --type raid1 -m 2 -n my_lv -L 100M my_vg Logical volume "my_lv" created. [root@mckinley-01 ~]# lvs -a -o +devices LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert Devices my_lv my_vg rwi-a-r--- 100.00m 100.00 my_lv_rimage_0(0),my_lv_rimage_1(0),my_lv_rimage_2(0) [my_lv_rimage_0] my_vg iwi-aor--- 100.00m /dev/mapper/mpathb1(1) [my_lv_rimage_1] my_vg iwi-aor--- 100.00m /dev/mapper/mpathc1(1) [my_lv_rimage_2] my_vg iwi-aor--- 100.00m /dev/mapper/mpathd1(1) [my_lv_rmeta_0] my_vg ewi-aor--- 4.00m /dev/mapper/mpathb1(0) [my_lv_rmeta_1] my_vg ewi-aor--- 4.00m /dev/mapper/mpathc1(0) [my_lv_rmeta_2] my_vg ewi-aor--- 4.00m /dev/mapper/mpathd1(0) [root@mckinley-01 ~]# lvconvert --splitmirrors 1 --trackchanges my_vg/my_lv my_vg/my_lv_rimage_2 split from my_vg/my_lv for read-only purposes. Use 'lvconvert --merge my_vg/my_lv_rimage_2' to merge back into my_vg/my_lv. [root@mckinley-01 ~]# lvs -a -o +devices LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert Devices my_lv my_vg rwi-a-r--- 100.00m 100.00 my_lv_rimage_0(0),my_lv_rimage_1(0),my_lv_rimage_2(0) [my_lv_rimage_0] my_vg iwi-aor--- 100.00m /dev/mapper/mpathb1(1) [my_lv_rimage_1] my_vg iwi-aor--- 100.00m /dev/mapper/mpathc1(1) my_lv_rimage_2 my_vg Iri-a-r--- 100.00m /dev/mapper/mpathd1(1) [my_lv_rmeta_0] my_vg ewi-aor--- 4.00m /dev/mapper/mpathb1(0) [my_lv_rmeta_1] my_vg ewi-aor--- 4.00m /dev/mapper/mpathc1(0) [my_lv_rmeta_2] my_vg ewi-a-r--- 4.00m /dev/mapper/mpathd1(0) [root@mckinley-01 ~]# lvconvert --splitmirrors 1 -n new my_vg/my_lv Conversion of tracking raid1 LV my_vg/my_lv is not supported. [root@mckinley-01 ~]# lvconvert --splitmirrors 1 -n new my_vg/my_lv_rimage_2 Command on LV my_vg/my_lv_rimage_2 does not accept LV type linear. Command not permitted on LV my_vg/my_lv_rimage_2. # RHEL8.0 [root@host-083 ~]# lvcreate --type raid1 -m 2 -n my_lv -L 100M my_vg Logical volume "my_lv" created. [root@host-083 ~]# lvs -a -o +devices LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert Devices my_lv my_vg rwi-a-r--- 100.00m 100.00 my_lv_rimage_0(0),my_lv_rimage_1(0),my_lv_rimage_2(0) [my_lv_rimage_0] my_vg iwi-aor--- 100.00m /dev/sda1(1) [my_lv_rimage_1] my_vg iwi-aor--- 100.00m /dev/sdb1(1) [my_lv_rimage_2] my_vg iwi-aor--- 100.00m /dev/sdc1(1) [my_lv_rmeta_0] my_vg ewi-aor--- 4.00m /dev/sda1(0) [my_lv_rmeta_1] my_vg ewi-aor--- 4.00m /dev/sdb1(0) [my_lv_rmeta_2] my_vg ewi-aor--- 4.00m /dev/sdc1(0) [root@host-083 ~]# lvconvert --splitmirrors 1 --trackchanges my_vg/my_lv my_vg/my_lv_rimage_2 split from my_vg/my_lv for read-only purposes. Use 'lvconvert --merge my_vg/my_lv_rimage_2' to merge back into my_vg/my_lv. [root@host-083 ~]# lvs -a -o +devices LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert Devices my_lv my_vg rwi-a-r--- 100.00m 100.00 my_lv_rimage_0(0),my_lv_rimage_1(0),my_lv_rimage_2(0) [my_lv_rimage_0] my_vg iwi-aor--- 100.00m /dev/sda1(1) [my_lv_rimage_1] my_vg iwi-aor--- 100.00m /dev/sdb1(1) my_lv_rimage_2 my_vg Iri-a-r--- 100.00m /dev/sdc1(1) [my_lv_rmeta_0] my_vg ewi-aor--- 4.00m /dev/sda1(0) [my_lv_rmeta_1] my_vg ewi-aor--- 4.00m /dev/sdb1(0) [my_lv_rmeta_2] my_vg ewi-a-r--- 4.00m /dev/sdc1(0) [root@host-083 ~]# lvconvert --splitmirrors 1 -n new my_vg/my_lv Conversion of tracking raid1 LV my_vg/my_lv is not supported. [root@host-083 ~]# lvconvert --splitmirrors 1 -n new my_vg/my_lv_rimage_2 Command on LV my_vg/my_lv_rimage_2 does not accept LV type linear. Command not permitted on LV my_vg/my_lv_rimage_2. Version-Release number of selected component (if applicable): kernel-4.18.0-74.el8 BUILT: Wed Feb 27 12:52:17 CST 2019 lvm2-2.03.02-6.el8 BUILT: Fri Feb 22 04:47:54 CST 2019 lvm2-libs-2.03.02-6.el8 BUILT: Fri Feb 22 04:47:54 CST 2019 lvm2-dbusd-2.03.02-6.el8 BUILT: Fri Feb 22 04:50:28 CST 2019 lvm2-lockd-2.03.02-6.el8 BUILT: Fri Feb 22 04:47:54 CST 2019 device-mapper-1.02.155-6.el8 BUILT: Fri Feb 22 04:47:54 CST 2019 device-mapper-libs-1.02.155-6.el8 BUILT: Fri Feb 22 04:47:54 CST 2019 device-mapper-event-1.02.155-6.el8 BUILT: Fri Feb 22 04:47:54 CST 2019 device-mapper-event-libs-1.02.155-6.el8 BUILT: Fri Feb 22 04:47:54 CST 2019 device-mapper-persistent-data-0.7.6-1.el8 BUILT: Sun Aug 12 04:21:55 CDT 2018