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DescriptionCorey Marthaler
2014-06-18 23:29:05 UTC
Description of problem:
Create a RO origin (slow) volume
lvcreate -p r -L 4G -n corigin cache_sanity /dev/sdb1
WARNING: "cache_sanity/corigin" not zeroed
Create a RO cache data and cache metadata (fast) volumes
lvcreate -p r -L 2G -n display_cache cache_sanity /dev/sde1
WARNING: "cache_sanity/display_cache" not zeroed
lvcreate -p r -L 8M -n display_cache_meta cache_sanity /dev/sde1
WARNING: "cache_sanity/display_cache_meta" not zeroed
[root@host-012 ~]# lvs -a -o +devices
LV VG Attr LSize Pool Origin Devices
corigin cache_sanity -ri-a----- 4.00g /dev/sdb1(0)
display_cache cache_sanity -ri-a----- 2.00g /dev/sde1(0)
display_cache_meta cache_sanity -ri-a----- 8.00m /dev/sde1(512)
[root@host-012 ~]# lvconvert --type cache-pool --cachemode writeback --poolmetadata cache_sanity/display_cache_meta cache_sanity/display_cache
/dev/cache_sanity/display_cache_meta: write failed after 0 of 4096 at 0: Operation not permitted
Logical volume "lvol0" created
Converted cache_sanity/display_cache to cache pool.
[root@host-012 ~]# echo $?
0
[root@host-012 ~]# lvconvert --type cache --cachepool cache_sanity/display_cache cache_sanity/corigin
device-mapper: reload ioctl on failed: Block device required
Device '/dev/sdc1' has been left open.
Device '/dev/sda1' has been left open.
Device '/dev/sdb1' has been left open.
Device '/dev/sda1' has been left open.
Device '/dev/sdc1' has been left open.
Device '/dev/sdc1' has been left open.
Device '/dev/sdb1' has been left open.
Device '/dev/sde1' has been left open.
Device '/dev/sdb1' has been left open.
Device '/dev/sde1' has been left open.
Device '/dev/sde1' has been left open.
Device '/dev/sda1' has been left open.
Device '/dev/sdb1' has been left open.
Device '/dev/sdc1' has been left open.
Device '/dev/sda1' has been left open.
Device '/dev/sde1' has been left open.
[root@host-012 ~]# lvs -a -o +devices
LV VG Attr LSize Pool Origin Devices
corigin cache_sanity -ri-a----- 4.00g /dev/sdb1(0)
display_cache cache_sanity Cwi-a-C--- 2.00g display_cache_cdata(0)
[display_cache_cdata] cache_sanity Cri-a-C--- 2.00g /dev/sde1(0)
[display_cache_cmeta] cache_sanity eri-a-C--- 8.00m /dev/sde1(512)
[lvol0_pmspare] cache_sanity ewi------- 8.00m /dev/sda1(0)
Jun 18 18:24:50 host-012 kernel: device-mapper: cache metadata: sb_check failed: blocknr 18446744073709551615: wanted 0
Jun 18 18:24:50 host-012 kernel: device-mapper: block manager: superblock validator check failed for block 0
Jun 18 18:24:50 host-012 kernel: device-mapper: cache metadata: couldn't read lock superblock
Jun 18 18:24:50 host-012 kernel: device-mapper: table: 253:2: cache: Error creating metadata object
Version-Release number of selected component (if applicable):
3.10.0-123.el7.x86_64
lvm2-2.02.105-14.el7 BUILT: Wed Mar 26 08:29:41 CDT 2014
lvm2-libs-2.02.105-14.el7 BUILT: Wed Mar 26 08:29:41 CDT 2014
lvm2-cluster-2.02.105-14.el7 BUILT: Wed Mar 26 08:29:41 CDT 2014
device-mapper-1.02.84-14.el7 BUILT: Wed Mar 26 08:29:41 CDT 2014
device-mapper-libs-1.02.84-14.el7 BUILT: Wed Mar 26 08:29:41 CDT 2014
device-mapper-event-1.02.84-14.el7 BUILT: Wed Mar 26 08:29:41 CDT 2014
device-mapper-event-libs-1.02.84-14.el7 BUILT: Wed Mar 26 08:29:41 CDT 2014
device-mapper-persistent-data-0.3.2-1.el7 BUILT: Thu Apr 3 09:58:51 CDT 2014
cmirror-2.02.105-14.el7 BUILT: Wed Mar 26 08:29:41 CDT 2014