[lvm-devel] master - conf: add allocation/use_blkid_wiping
Peter Rajnoha
prajnoha at fedoraproject.org
Wed Nov 27 14:52:37 UTC 2013
Gitweb: http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=ab2f858af7a72448b6c015a5984c73f5cdaf3664
Commit: ab2f858af7a72448b6c015a5984c73f5cdaf3664
Parent: 9bfc0be493192958f5dbffea4eb7dda968062261
Author: Peter Rajnoha <prajnoha at redhat.com>
AuthorDate: Wed Nov 27 13:52:15 2013 +0100
Committer: Peter Rajnoha <prajnoha at redhat.com>
CommitterDate: Wed Nov 27 15:49:14 2013 +0100
conf: add allocation/use_blkid_wiping
Add allocation/use_blkid_wiping setting to lvm.conf to select between
LVM2 native code to detect signatures to wipe or blkid library code.
---
WHATS_NEW | 1 +
conf/example.conf.in | 15 +++++++++++++++
lib/config/config_settings.h | 1 +
3 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/WHATS_NEW b/WHATS_NEW
index 9823cd1..55b17c0 100644
--- a/WHATS_NEW
+++ b/WHATS_NEW
@@ -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.
diff --git a/conf/example.conf.in b/conf/example.conf.in
index 0ac53ef..b7ad3d1 100644
--- a/conf/example.conf.in
+++ b/conf/example.conf.in
@@ -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
diff --git a/lib/config/config_settings.h b/lib/config/config_settings.h
index 7a7e8e5..929e907 100644
--- a/lib/config/config_settings.h
+++ b/lib/config/config_settings.h
@@ -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)
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