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For DM devices, the add/change/remove can appear as action for genuine udev events. However, there are more action types (bind, unbind, move, online, offline) which never appear as actions for genuine DM udev events, but they can still be synthesized (e.g. by writing "<action>" to "/sys/.../uevent" file or by calling "udevadm trigger --action=<action>"). Let's also process these extra action types so that the udev-related content is not lost completely, keeping all the symlinks and udev db entries just like this was a synthetic udev event with "change" action. Related to https://gitlab.com/lvmteam/lvm2/-/issues/4.
81 lines
3.1 KiB
Plaintext
81 lines
3.1 KiB
Plaintext
# Copyright (C) 2009 Red Hat, Inc. All rights reserved.
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#
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# This file is part of LVM2.
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# Udev rules for device-mapper devices.
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#
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# These rules set permissions for DM devices.
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#
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# This file is considered to be a template where users can put their
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# own entries and then put a copy of it manually to a usual place with
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# user-edited udev rules (usually /etc/udev/rules.d).
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#
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# There are some environment variables set that can be used:
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# DM_UDEV_RULES_VSN - DM udev rules version
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# DM_NAME - actual DM device's name
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# DM_UUID - UUID set for DM device (blank if not specified)
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# DM_LV_NAME - logical volume name (not set if LVM device not present)
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# DM_VG_NAME - volume group name (not set if LVM device not present)
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# DM_LV_LAYER - logical volume layer (not set if LVM device not present)
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# "add" event is processed on coldplug only!
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ACTION=="remove", GOTO="dm_end"
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ENV{DM_UDEV_RULES_VSN}!="?*", GOTO="dm_end"
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# A few demonstrational examples...
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# PLAIN DM DEVICES
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#
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# Set permissions for a DM device named 'my_device' exactly
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# ENV{DM_NAME}=="my_device", OWNER:="root", GROUP:="root", MODE:="660"
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# Set permissions for all DM devices having 'MY_UUID-' UUID prefix
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# ENV{DM_UUID}=="MY_UUID-?*", OWNER:="root", GROUP:="root", MODE:="660"
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# LVM DEVICES
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#
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# Set permissions for all LVM devices
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# ENV{DM_UUID}=="LVM-?*", OWNER:="root", GROUP:="root", MODE:="660"
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# Set permissions for all devices that belong to one LVM VG
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# ENV{DM_VG_NAME}=="VolGroup00", OWNER:="root", GROUP:="root", MODE:="660"
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# Set permissions for an LVM device with VG named VolGroup00 and LV named LogVol00 exactly
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# ENV{DM_VG_NAME}=="VolGroup00", ENV{DM_LV_NAME}=="LogVol00", OWNER:="root", GROUP:="root", MODE:="660"
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# Set permissions for all LVM devices that does not belong to a VG named VolGroup00
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# ENV{DM_VG_NAME}!="VolGroup00", OWNER:="root", GROUP:="root", MODE:="660"
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# ENCRYPTED DEVICES (using cryptsetup >= 1.1)
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#
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# Set permissions for all encrypted devices created by cryptsetup (plain devices)
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# ENV{DM_UUID}=="CRYPT-PLAIN-?*", OWNER:="root", GROUP:="root", MODE:="660"
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# Set permissions for all encrypted devices created by cryptsetup (LUKS extension)
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# ENV{DM_UUID}=="CRYPT-LUKS1-?*", OWNER:="root", GROUP:="root", MODE:="660"
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# Set permissions for an encrypted device created by cryptsetup and having an exact luks UUID
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# ENV{DM_UUID}=="CRYPT-LUKS1-22fce5c8313c43c68d84b50a3b0fee78-?*", OWNER:="root", GROUP:="root", MODE:="660"
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# MULTIPATH DEVICES
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#
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# Set permissions for all multipath devices
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# ENV{DM_UUID}=="mpath-?*", OWNER:="root", GROUP:="root", MODE:="660"
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# Set permissions for first two partitions created on a multipath device (and detected by kpartx)
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# ENV{DM_UUID}=="part[1-2]-mpath-?*", OWNER:="root", GROUP:="root", MODE:="660"
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# ...you can use any combination of the comparisons with the environment variables
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# listed at the beginning of this file (udev provides simple pattern matching by
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# using *, ? and [] that you can use, see 'man udev' for more information).
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# Set default permissions for all DM devices if not set before.
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# OWNER:="root", GROUP:="root", MODE:="660"
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LABEL="dm_end"
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