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pool: allow data on zero and error segtypes

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Renables usage of --type zero and --type error LVs to serve as
backend for _tdata device. Clearly not very useful in practice,
as it can't store any real data, but usable for some testing
and some sort of perfomance checking.

  lvcreate --type zero -L1T -n pool vg
  lvconvert --thinpool vg/pool

Will create a thin-pool with zero device backend.
This commit is contained in:
Zdenek Kabelac 2021-03-17 18:26:08 +01:00
parent 7a9efc5fae
commit 1c3774c7a8
1 changed files with 4 additions and 4 deletions
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8
tools/command-lines.in
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@ -435,7 +435,7 @@ FLAGS: SECONDARY_SYNTAX
# lvconvert utilities for creating/maintaining thin and cache objects.
# Create a new command set for these and migrate them out of lvconvert?
lvconvert --type thin --thinpool LV LV_linear_striped_raid_cache_thin
lvconvert --type thin --thinpool LV LV_linear_striped_raid_cache_thin_error_zero
OO: --thin, --originname LV_new, OO_LVCONVERT_POOL, OO_LVCONVERT
ID: lvconvert_to_thin_with_external
DESC: Convert LV to a thin LV, using the original LV as an external origin.
@ -444,7 +444,7 @@ RULE: all not lv_is_locked lv_is_raid_with_integrity
RULE: --poolmetadata not --readahead --stripesize --stripes_long
# alternate form of lvconvert --type thin
lvconvert --thin --thinpool LV LV_linear_striped_raid_cache_thin
lvconvert --thin --thinpool LV LV_linear_striped_raid_cache_thin_error_zero
OO: --type thin, --originname LV_new, OO_LVCONVERT_POOL, OO_LVCONVERT
ID: lvconvert_to_thin_with_external
DESC: Convert LV to a thin LV, using the original LV as an external origin
@ -517,7 +517,7 @@ RULE: all and lv_is_visible
---
lvconvert --type thin-pool LV_linear_striped_raid_cache
lvconvert --type thin-pool LV_linear_striped_raid_cache_error_zero
OO: --stripes_long Number, --stripesize SizeKB,
OO_LVCONVERT_THIN, OO_LVCONVERT_POOL, OO_LVCONVERT
OP: PV ...
@ -593,7 +593,7 @@ RULE: all not lv_is_raid_with_integrity
# This command syntax is deprecated, and the primary forms
# of creating a pool or swapping metadata should be used.
lvconvert --cachepool LV_linear_striped_raid_cachepool
lvconvert --cachepool LV_linear_striped_raid_cachepool_error_zero
OO: --type cache-pool, OO_LVCONVERT_CACHE, OO_LVCONVERT_POOL, OO_LVCONVERT
OP: PV ...
ID: lvconvert_to_cachepool_or_swap_metadata