6 Commits

Author	SHA1	Message	Date
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