Comment # 1
on bug 1135984
from Andrei Dziahel
affects TW 20190628 too (lvm2 v2.02.180-5.3). Since then I've disassembled
RAID1 on root, so now it's just two plain LVs cached (see below), but it didn't
resolve the issue.
$ lvdisplay -a
--- Logical volume ---
LV Path /dev/system/swap
LV Name swap
VG Name system
LV UUID QQc3m4-3Hly-lfs3-nWr5-Jfai-ZO5H-Dov1vG
LV Write Access read/write
LV Creation host, time t-rex, 2018-03-17 17:14:43 +0300
LV Status available
# open 2
LV Size 40,00 GiB
Current LE 10240
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 1024
Block device 254:4
--- Logical volume ---
LV Path /dev/system/root
LV Name root
VG Name system
LV UUID zh5HZ0-VxRp-ubnM-KFiH-20t8-HqIX-W2YNIn
LV Write Access read/write
LV Creation host, time t-rex, 2018-03-18 08:34:30 +0300
Unknown feature in status: 8 149/9216 2048 46653/46656 10199113 197274
27005379 704726 101 100 0 3 metadata2 writeback no_discard_passdown 2
migration_threshold 2048 smq 0 rw -
LV Cache pool name lvc_root
LV Cache origin name root_corig
LV Status available
# open 1
LV Size 150,00 GiB
Cache used blocks 99,99%
Cache metadata blocks 1,62%
Cache dirty blocks 0,00%
Cache read hits/misses 10199113 / 197274
Cache wrt hits/misses 27005379 / 704726
Cache demotions 101
Cache promotions 100
Current LE 38400
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 1024
Block device 254:3
--- Logical volume ---
LV Path /dev/system/home
LV Name home
VG Name system
LV UUID zPSIMu-hvAW-mdKs-Rasc-lneO-3Yc1-eXVjXt
LV Write Access read/write
LV Creation host, time t-rex, 2018-03-18 08:43:49 +0300
Unknown feature in status: 8 2785/11264 192 924757/924757 32688605 8050475
174871322 12047899 1052 1055 0 3 metadata2 writeback no_discard_passdown 2
migration_threshold 2048 smq 0 rw -
LV Cache pool name lvc_home
LV Cache origin name home_corig
LV Status available
# open 1
LV Size 1,63 TiB
Cache used blocks 100,00%
Cache metadata blocks 24,72%
Cache dirty blocks 0,00%
Cache read hits/misses 32688605 / 8050475
Cache wrt hits/misses 174871322 / 12047899
Cache demotions 1052
Cache promotions 1055
Current LE 427910
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 1024
Block device 254:8
--- Logical volume ---
Internal LV Name lvc_root
VG Name system
LV UUID 5y8BUr-g9fy-afFy-f3HG-amF7-WrWl-fC8tmZ
LV Write Access read/write
LV Creation host, time t-rex, 2018-11-06 08:41:12 +0300
LV Pool metadata lvc_root_cmeta
LV Pool data lvc_root_cdata
LV Status NOT available
LV Size 45,56 GiB
Current LE 11664
Segments 1
Allocation inherit
Read ahead sectors auto
--- Logical volume ---
Internal LV Name lvc_home
VG Name system
LV UUID 1kDyOd-mmes-7AuT-4Lmw-ydI2-Uwsl-x8fZgr
LV Write Access read/write
LV Creation host, time t-rex, 2018-11-04 15:50:22 +0300
LV Pool metadata lvc_home_cmeta
LV Pool data lvc_home_cdata
LV Status NOT available
LV Size 84,66 GiB
Current LE 21674
Segments 1
Allocation inherit
Read ahead sectors auto
--- Logical volume ---
Internal LV Name lvol0_pmspare
VG Name system
LV UUID qAC79E-skhy-vVok-TJ4L-jHSE-1QVw-PcjDca
LV Write Access read/write
LV Creation host, time t-rex, 2018-11-04 15:49:47 +0300
LV Status NOT available
LV Size 44,00 MiB
Current LE 11
Segments 2
Allocation inherit
Read ahead sectors auto
--- Logical volume ---
Internal LV Name lvc_home_cmeta
VG Name system
LV UUID mVCub7-CxeA-gwcb-0ymD-mJrv-cekx-eHdgFV
LV Write Access read/write
LV Creation host, time t-rex, 2018-11-04 15:50:22 +0300
LV Status available
# open 1
LV Size 44,00 MiB
Current LE 11
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 1024
Block device 254:6
--- Logical volume ---
Internal LV Name lvc_home_cdata
VG Name system
LV UUID m3Nx9Z-33yW-8Ymh-VKiV-CFUi-0nrt-N2jTUQ
LV Write Access read/write
LV Creation host, time t-rex, 2018-11-04 15:50:22 +0300
LV Status available
# open 1
LV Size 84,66 GiB
Current LE 21674
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 1024
Block device 254:5
--- Logical volume ---
Internal LV Name lvc_root_cmeta
VG Name system
LV UUID 2vGld2-0HsR-MNms-jFh2-pLQw-U43x-qElYLA
LV Write Access read/write
LV Creation host, time t-rex, 2018-11-06 08:41:12 +0300
LV Status available
# open 1
LV Size 36,00 MiB
Current LE 9
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 1024
Block device 254:1
--- Logical volume ---
Internal LV Name lvc_root_cdata
VG Name system
LV UUID Z1AVWd-grlL-Mnzc-M5tK-ocex-4r5A-V5MrbV
LV Write Access read/write
LV Creation host, time t-rex, 2018-11-06 08:41:12 +0300
LV Status available
# open 1
LV Size 45,56 GiB
Current LE 11664
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 1024
Block device 254:0
--- Logical volume ---
Internal LV Name home_corig
VG Name system
LV UUID dWvrrk-cIif-yphO-doyz-EeY4-qZQa-QiFMzk
LV Write Access read/write
LV Creation host, time t-rex, 2018-11-15 12:57:21 +0300
LV origin of Cache LV home
LV Status available
# open 1
LV Size 1,63 TiB
Current LE 427910
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 1024
Block device 254:7
--- Logical volume ---
Internal LV Name root_corig
VG Name system
LV UUID ncn6Dt-5ShK-1EFZ-pwlm-EXFi-fGHA-xKyIGQ
LV Write Access read/write
LV Creation host, time t-rex, 2018-11-15 22:40:42 +0300
LV origin of Cache LV root
LV Status available
# open 1
LV Size 150,00 GiB
Current LE 38400
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 1024
Block device 254:2