shaba/lvm2
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16,914 Commits 425 Branches 667 Tags 54 MiB
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Commit Graph

9 Commits

Author SHA1 Message Date
David Teigland
a7b2fc8f57 writecache: add settings cleaner and max_age 
available in dm-writecache 1.2
 2020-06-10 12:15:50 -05:00
David Teigland
8153c5f1e6 writecache: working real dm uuid suffix for wcorig lv 2020-02-20 17:13:43 -06:00
David Teigland
4829f27b76 writecache: drop real dm suffix 
fixes the problem of adding writecache to an active LV
 2020-02-17 13:07:06 -06:00
David Teigland
1c9b36618e writecache: modprobe dm-writecache 2019-11-26 11:21:09 -06:00
Zdenek Kabelac
a454a1b4ea cachevol: put _cvol as protected suffix. 
This revert "drop cvol dm uuid suffix for cachevol LVs"
commit 5191057d9d.
Start using -cvol for  DM UUID.
 2019-10-14 15:16:05 +02:00
David Teigland
5191057d9d drop cvol dm uuid suffix for cachevol LVs 
The "-cvol" suffix on the uuid is interfering with
activation code, so drop the suffix for now.
 2019-09-23 14:13:31 -05:00
David Teigland
6f7d7089b4 writecache: use dm suffixes and lv attributes 
- use internal CACHE_VOL flag on cachevol LV
- add suffixes to dm uuids for internal LVs
- display appropriate letters in the LV attr field
- display writecache's cachevol in lvs output
 2019-09-20 14:08:51 -05:00
David Teigland
adfb9bf20c remove unused string writecache 2019-05-01 16:50:14 -05:00
David Teigland
3ae5569570 Add dm-writecache support 
dm-writecache is used like dm-cache with a standard LV
as the cache.

$ lvcreate -n main -L 128M -an foo /dev/loop0

$ lvcreate -n fast -L 32M -an foo /dev/pmem0

$ lvconvert --type writecache --cachepool fast foo/main

$ lvs -a foo -o+devices
  LV            VG  Attr       LSize   Origin        Devices
  [fast]        foo -wi-------  32.00m               /dev/pmem0(0)
  main          foo Cwi------- 128.00m [main_wcorig] main_wcorig(0)
  [main_wcorig] foo -wi------- 128.00m               /dev/loop0(0)

$ lvchange -ay foo/main

$ dmsetup table
foo-main_wcorig: 0 262144 linear 7:0 2048
foo-main: 0 262144 writecache p 253:4 253:3 4096 0
foo-fast: 0 65536 linear 259:0 2048

$ lvchange -an foo/main

$ lvconvert --splitcache foo/main

$ lvs -a foo -o+devices
  LV   VG  Attr       LSize   Devices
  fast foo -wi-------  32.00m /dev/pmem0(0)
  main foo -wi------- 128.00m /dev/loop0(0)
 2018-11-06 14:18:41 -06:00