diff options
Diffstat (limited to 'udev')
| -rw-r--r-- | udev/11-dm-lvm.rules.in | 15 | ||||
| -rw-r--r-- | udev/13-dm-disk.rules.in | 3 | ||||
| -rw-r--r-- | udev/69-dm-lvm-metad.rules.in | 2 |
3 files changed, 19 insertions, 1 deletions
diff --git a/udev/11-dm-lvm.rules.in b/udev/11-dm-lvm.rules.in index f21d0aa6c..5032280db 100644 --- a/udev/11-dm-lvm.rules.in +++ b/udev/11-dm-lvm.rules.in @@ -20,6 +20,21 @@ ENV{DM_UUID}!="LVM-?*", GOTO="lvm_end" # Use DM name and split it up into its VG/LV/layer constituents. IMPORT{program}="(DM_EXEC)/dmsetup splitname --nameprefixes --noheadings --rows $env{DM_NAME}" +# DM_SUBSYSTEM_UDEV_FLAG0 is the 'NOSCAN' flag for LVM subsystem. +# This flag is used to temporarily disable selected rules to prevent any +# processing or scanning done on the LVM volume before LVM has any chance +# to zero any stale metadata found within the LV data area. Such stale +# metadata could cause false claim of the LV device, keeping it open etc. +# +# If the NOSCAN flag is present, backup selected existing flags used to +# disable rules, then set them firmly so those selected rules are surely skipped. +# Restore these flags once the NOSCAN flag is dropped (which is normally any +# uevent that follows for this LV, even an artificially generated one). +ENV{DM_SUBSYSTEM_UDEV_FLAG0}=="1", ENV{DM_NOSCAN}="1", ENV{DM_DISABLE_OTHER_RULES_FLAG_OLD}="$env{DM_UDEV_DISABLE_OTHER_RULES_FLAG}", ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG}="1" +ENV{DM_SUBSYSTEM_UDEV_FLAG0}!="1", IMPORT{db}="DM_NOSCAN", IMPORT{db}="DM_DISABLE_OTHER_RULES_FLAG_OLD" +ENV{DM_SUBSYSTEM_UDEV_FLAG0}!="1", ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG}="$env{DM_DISABLE_OTHER_RULES_FLAG_OLD}", \ + ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG_OLD}="", ENV{DM_NOSCAN}="" + ENV{DM_UDEV_DISABLE_SUBSYSTEM_RULES_FLAG}=="1", GOTO="lvm_end" OPTIONS+="event_timeout=180" diff --git a/udev/13-dm-disk.rules.in b/udev/13-dm-disk.rules.in index 1920260af..4b64dd69e 100644 --- a/udev/13-dm-disk.rules.in +++ b/udev/13-dm-disk.rules.in @@ -18,6 +18,7 @@ SYMLINK+="disk/by-id/dm-name-$env{DM_NAME}" ENV{DM_UUID}=="?*", SYMLINK+="disk/by-id/dm-uuid-$env{DM_UUID}" ENV{DM_SUSPENDED}=="1", GOTO="dm_end" +ENV{DM_NOSCAN}=="1", GOTO="dm_watch" (BLKID_RULE) ENV{DM_UDEV_LOW_PRIORITY_FLAG}=="1", OPTIONS="link_priority=-100" @@ -32,7 +33,7 @@ ENV{ID_FS_USAGE}=="filesystem|other", ENV{ID_FS_LABEL_ENC}=="?*", SYMLINK+="disk # (like creating a filesystem, changing filesystem label etc.). # # But let's use this until we have something better... - +LABEL="dm_watch" OPTIONS+="watch" LABEL="dm_end" diff --git a/udev/69-dm-lvm-metad.rules.in b/udev/69-dm-lvm-metad.rules.in index ba433967e..3303f4d06 100644 --- a/udev/69-dm-lvm-metad.rules.in +++ b/udev/69-dm-lvm-metad.rules.in @@ -17,6 +17,8 @@ SUBSYSTEM!="block", GOTO="lvm_end" (LVM_EXEC_RULE) +ENV{DM_NOSCAN}=="1", GOTO="lvm_end" + # If the PV label got lost, inform lvmetad immediately. # Detect the lost PV label by comparing previous ID_FS_TYPE value with current one. ENV{.ID_FS_TYPE_NEW}="$env{ID_FS_TYPE}" |