73 lines
3.6 KiB
Diff
73 lines
3.6 KiB
Diff
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--- LVM2.2.02.68-old/udev/10-dm.rules.in 2010-06-23 18:00:32.000000000 +0100
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+++ LVM2.2.02.68/udev/10-dm.rules.in 2010-06-23 19:46:27.000000000 +0100
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@@ -19,6 +19,13 @@
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SUBSYSTEM!="block", GOTO="dm_end"
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KERNEL!="dm-[0-9]*", GOTO="dm_end"
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+# There is a new change event generated in block layer since kernel
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+# version 2.6.32. It adds notification for changes in read-only
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+# attribute. We don't want to misinterpret the regular meaning of change
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+# events for DM devices and we don't want to apply the rules prematurely,
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+# therefore we disable them in this situation.
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+ENV{DISK_RO}=="1", GOTO="dm_disable"
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+
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# Set proper sbin path, /sbin has higher priority than /usr/sbin.
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ENV{DM_SBIN_PATH}="/sbin"
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TEST!="$env{DM_SBIN_PATH}/dmsetup", ENV{DM_SBIN_PATH}="/usr/sbin"
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@@ -30,16 +37,11 @@
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# kernels >= 2.6.31 only.
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ENV{DM_COOKIE}=="?*", IMPORT{program}="$env{DM_SBIN_PATH}/dmsetup udevflags $env{DM_COOKIE}"
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-# Device created, major and minor number assigned - "add" event generated.
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-# Table loaded - no event generated.
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-# Device resumed (or renamed) - "change" event generated.
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-# Device removed - "remove" event generated.
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-#
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-# The dm-X nodes are always created, even on "add" event, we can't suppress
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-# that (the node is created even earlier with devtmpfs). All the symlinks
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-# (e.g. /dev/mapper) are created in right time after a device has its table
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-# loaded and is properly resumed. For this reason, direct use of dm-X nodes
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-# is not recommended.
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+# Normally, we would test for DM_UDEV_DISABLE_DM_RULES_FLAG here and skip
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+# the rules if set. However, we need to set DM_* environment variables
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+# for now to properly filter out inappropriate events. This dependency
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+# might be removed in the future.
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+
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ACTION!="add|change", GOTO="dm_end"
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# There is no cookie set nor any flags encoded in events not originating
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@@ -53,7 +55,6 @@
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IMPORT{db}="DM_UDEV_DISABLE_OTHER_RULES_FLAG"
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IMPORT{db}="DM_UDEV_LOW_PRIORITY_FLAG"
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IMPORT{db}="DM_UDEV_DISABLE_LIBRARY_FALLBACK_FLAG"
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-IMPORT{db}="DM_UDEV_PRIMARY_SOURCE_FLAG"
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IMPORT{db}="DM_UDEV_FLAG7"
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IMPORT{db}="DM_SUBSYSTEM_UDEV_FLAG0"
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IMPORT{db}="DM_SUBSYSTEM_UDEV_FLAG1"
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@@ -65,19 +66,12 @@
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IMPORT{db}="DM_SUBSYSTEM_UDEV_FLAG7"
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LABEL="dm_flags_done"
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-# Normally, we operate on "change" events. But when coldplugging, there's an
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-# "add" event present. We have to recognize this and do our actions in this
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-# particular situation, too. Also, we don't want the nodes to be created
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-# prematurely on "add" events while not coldplugging. We check
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-# DM_UDEV_PRIMARY_SOURCE_FLAG to see if the device was activated correctly
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-# before and if not, we ignore the "add" event totally. This way we can support
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-# udev triggers generating "add" events (e.g. "udevadm trigger --action=add" or
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-# "echo add > /sys/block/<dm_device>/uevent"). The trigger with "add" event is
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-# also used at boot to reevaluate udev rules for all existing devices activated
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-# before (e.g. in initrd). If udev is used in initrd, we require the udev init
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-# script to not remove the existing udev database so we can reuse the information
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-# stored at the time of device activation in the initrd.
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-ACTION=="add", ENV{DM_UDEV_PRIMARY_SOURCE_FLAG}!="1", GOTO="dm_disable"
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+# Normally, we operate on "change" events only. But when
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+# coldplugging, there's an "add" event present. We have to
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+# recognize this and do our actions in this particular
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+# situation, too. Also, we don't want the nodes to be
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+# created prematurely on "add" events while not coldplugging.
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+ACTION=="add", ENV{STARTUP}!="1", NAME="", GOTO="dm_end"
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# "dm" sysfs subdirectory is available in newer versions of DM
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# only (kernels >= 2.6.29). We have to check for its existence
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