mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-22 17:35:59 +03:00
3ae5569570
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)
39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
|
|
|
|
/*
|
|
* LV types used in command definitions. The type strings are used
|
|
* as LV suffixes, e.g. LV_type or LV_type1_type2.
|
|
*
|
|
* The final NULL arg can be replaced with lv_is_type() functions
|
|
* if the current lv_is_type #defines become functions and are
|
|
* moved to tools.h
|
|
*
|
|
* Until then, the lv_is_type() functions are called indirectly
|
|
* through _lv_is_type().
|
|
*/
|
|
|
|
lvt(LVT_NONE, "", NULL)
|
|
lvt(linear_LVT, "linear", NULL)
|
|
lvt(striped_LVT, "striped", NULL)
|
|
lvt(snapshot_LVT, "snapshot", NULL) /* lv_is_cow, lv_is_thick_snapshot */
|
|
lvt(thin_LVT, "thin", NULL)
|
|
lvt(thinpool_LVT, "thinpool", NULL)
|
|
lvt(cache_LVT, "cache", NULL)
|
|
lvt(cachepool_LVT, "cachepool", NULL)
|
|
lvt(vdo_LVT, "vdo", NULL)
|
|
lvt(vdopool_LVT, "vdopool", NULL)
|
|
lvt(vdopooldata_LVT, "vdopooldata", NULL)
|
|
lvt(mirror_LVT, "mirror", NULL)
|
|
lvt(raid_LVT, "raid", NULL) /* any raid type */
|
|
lvt(raid0_LVT, "raid0", NULL)
|
|
lvt(raid1_LVT, "raid1", NULL)
|
|
lvt(raid4_LVT, "raid4", NULL)
|
|
lvt(raid5_LVT, "raid5", NULL)
|
|
lvt(raid6_LVT, "raid6", NULL)
|
|
lvt(raid10_LVT, "raid10", NULL)
|
|
lvt(error_LVT, "error", NULL)
|
|
lvt(zero_LVT, "zero", NULL)
|
|
lvt(writecache_LVT, "writecache", NULL)
|
|
lvt(LVT_COUNT, "", NULL)
|
|
|