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conf: add allocation/use_blkid_wiping

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Add allocation/use_blkid_wiping setting to lvm.conf to select between
LVM2 native code to detect signatures to wipe or blkid library code.
This commit is contained in:
Peter Rajnoha 2013-11-27 13:52:15 +01:00
parent 9bfc0be493
commit ab2f858af7
3 changed files with 17 additions and 0 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.02.105 -
=====================================
Add allocation/use_blkid_wiping to lvm.conf to enable blkid wiping.
Add configure --enable-blkid_wiping to use libblkid to detect signatures.
Add -W/--wipesignatures lvcreate option to support wiping on new LVs.
Add allocation/wipe_signatures_on_new_logical_volumes_when_zeroing to lvm.conf.

15
conf/example.conf.in
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@ -272,6 +272,21 @@ allocation {
# algorithm.
maximise_cling = 1
# Whether to use blkid library instead of native LVM2 code to detect
# any existing signatures while creating new Physical Volumes and
# Logical Volumes. LVM2 needs to be compiled with blkid wiping support
# for this setting to take effect.
#
# LVM2 native detection code is currently able to recognize these signatures:
# - MD device signature
# - swap signature
# - LUKS signature
# To see the list of signatures recognized by blkid, check the output
# of 'blkid -k' command. The blkid can recognize more signatures than
# LVM2 native detection code, but due to this higher number of signatures
# to be recognized, it can take more time to complete the signature scan.
use_blkid_wiping = 1
# Whether do wipe any signatures found on newly created Logical Volumes
# automatically in addition to zeroing of the first KB on the LV
# (-Z/--zero y option) when running the LVM command without specifying

1
lib/config/config_settings.h
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@ -104,6 +104,7 @@ cfg(devices_issue_discards_CFG, "issue_discards", devices_CFG_SECTION, 0, CFG_TY
cfg_array(allocation_cling_tag_list_CFG, "cling_tag_list", allocation_CFG_SECTION, 0, CFG_TYPE_STRING, NULL, vsn(2, 2, 77), NULL)
cfg(allocation_maximise_cling_CFG, "maximise_cling", allocation_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_MAXIMISE_CLING, vsn(2, 2, 85), NULL)
cfg(allocation_use_blkid_wiping_CFG, "use_blkid_wiping", allocation_CFG_SECTION, 0, CFG_TYPE_BOOL, 1, vsn(2, 2, 105), NULL)
cfg(allocation_wipe_signatures_on_new_logical_volumes_when_zeroing_CFG, "wipe_signatures_on_new_logical_volumes_when_zeroing", allocation_CFG_SECTION, 0, CFG_TYPE_BOOL, 1, vsn(2, 2, 105), NULL)
cfg(allocation_mirror_logs_require_separate_pvs_CFG, "mirror_logs_require_separate_pvs", allocation_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_MIRROR_LOGS_REQUIRE_SEPARATE_PVS, vsn(2, 2, 85), NULL)
cfg(allocation_thin_pool_metadata_require_separate_pvs_CFG, "thin_pool_metadata_require_separate_pvs", allocation_CFG_SECTION, 0, CFG_TYPE_BOOL, DEFAULT_THIN_POOL_METADATA_REQUIRE_SEPARATE_PVS, vsn(2, 2, 89), NULL)