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udev: keep DM_ACTIVATION and DM_UDEV_PRIMARY_SOURCE_FLAG meaning as before commit 8d1d835

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The DM_ACTIVATION and DM_UDEV_PRIMARY_SOURCE_FLAG needs to be kept the
way it was for backward compatibility (e.g. the old rules are still
in initramfs). This way the check in whether the device should be
scanned in 69-dm-lvmetad.rules is even easier.
This commit is contained in:
Peter Rajnoha 2013-09-12 13:46:20 +02:00
parent 4d54400486
commit 6940e24aee
2 changed files with 11 additions and 10 deletions
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18
udev/10-dm.rules.in
View File

@ -45,13 +45,14 @@ ENV{DISK_RO}=="1", GOTO="dm_disable"
# in libdevmapper so we need to detect this and try to behave correctly.
# For such spurious events, regenerate all flags from current udev database content
# (this information would normally be inaccessible for spurious ADD and CHANGE events).
ENV{DM_UDEV_PRIMARY_SOURCE_FLAG}=="1", ENV{DM_ACTIVATED}="1", GOTO="dm_flags_done"
ENV{DM_UDEV_PRIMARY_SOURCE_FLAG}=="1", ENV{DM_ACTIVATION}="1", GOTO="dm_flags_done"
IMPORT{db}="DM_UDEV_DISABLE_DM_RULES_FLAG"
IMPORT{db}="DM_UDEV_DISABLE_SUBSYSTEM_RULES_FLAG"
IMPORT{db}="DM_UDEV_DISABLE_DISK_RULES_FLAG"
IMPORT{db}="DM_UDEV_DISABLE_OTHER_RULES_FLAG"
IMPORT{db}="DM_UDEV_LOW_PRIORITY_FLAG"
IMPORT{db}="DM_UDEV_DISABLE_LIBRARY_FALLBACK_FLAG"
IMPORT{db}="DM_UDEV_PRIMARY_SOURCE_FLAG"
IMPORT{db}="DM_UDEV_FLAG7"
IMPORT{db}="DM_SUBSYSTEM_UDEV_FLAG0"
IMPORT{db}="DM_SUBSYSTEM_UDEV_FLAG1"
@ -62,7 +63,6 @@ IMPORT{db}="DM_SUBSYSTEM_UDEV_FLAG5"
IMPORT{db}="DM_SUBSYSTEM_UDEV_FLAG6"
IMPORT{db}="DM_SUBSYSTEM_UDEV_FLAG7"
IMPORT{db}="DM_UDEV_RULES_VSN"
IMPORT{db}="DM_ACTIVATED"
LABEL="dm_flags_done"
# Normally, we operate on "change" events. But when coldplugging, there's an
@ -77,24 +77,26 @@ LABEL="dm_flags_done"
# before (e.g. in initrd). If udev is used in initrd, we require the udev init
# script to not remove the existing udev database so we can reuse the information
# stored at the time of device activation in the initrd.
# The DM_ACTIVATED variable indicates that the device has already been activated.
ACTION=="add", ENV{DM_UDEV_RULES_VSN}!="1", ENV{DM_ACTIVATED}!="1", GOTO="dm_disable"
ACTION!="add", GOTO="dm_no_coldplug"
ENV{DM_UDEV_RULES_VSN}!="1", ENV{DM_UDEV_PRIMARY_SOURCE_FLAG}!="1", GOTO="dm_disable"
ENV{DM_ACTIVATION}="1"
LABEL="dm_no_coldplug"
# Putting it together, following table is used to recognize genuine and spurious events.
# N.B. Spurious events are generated based on use of the WATCH udev
# rule or by triggering an event manually by "udevadm trigger" call
# or by "echo <event_name> > /sys/block/dm-X/uevent".
#
# EVENT DM_UDEV_PRIMARY_SOURCE_FLAG DM_ACTIVATED
# ====================================================================
# EVENT DM_UDEV_PRIMARY_SOURCE_FLAG DM_ACTIVATION
# ======================================================================
# add event (genuine) 0 0
# change event (genuine) 1 1
# add event (spurious)
# |_ dev still not active 0 0
# \_ dev already active 0 1
# \_ dev already active 1 1
# change event (spurious)
# |_ dev still not active 0 0
# \_ dev already active 0 1
# \_ dev already active 1 0
# "dm" sysfs subdirectory is available in newer versions of DM
# only (kernels >= 2.6.29). We have to check for its existence

3
udev/69-dm-lvm-metad.rules.in
View File

@ -39,8 +39,7 @@ ACTION=="remove", GOTO="lvm_scan"
# DM device:
KERNEL!="dm-[0-9]*", GOTO="next"
ACTION=="add", ENV{DM_ACTIVATED}=="1", GOTO="lvm_scan"
ACTION=="change", ENV{DM_UDEV_PRIMARY_SOURCE_FLAG}=="1", GOTO="lvm_scan"
ENV{DM_UDEV_PRIMARY_SOURCE_FLAG}=="1", ENV{DM_ACTIVATION}=="1", GOTO="lvm_scan"
GOTO="lvm_end"
# MD device: