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File Name : 69-dm-lvm-metad.rules

# Copyright (C) 2012 Red Hat, Inc. All rights reserved.
#
# This file is part of LVM2.

# Udev rules for LVM.
#
# This rule requires blkid to be called on block devices before so only devices
# used as LVM PVs are processed (ID_FS_TYPE="LVM2_member" or "LVM1_member").

SUBSYSTEM!="block", GOTO="lvm_end"

ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG}=="1", GOTO="lvm_end"

# Detect removed PV label by comparing previous ID_FS_TYPE value with current one.
ENV{.ID_FS_TYPE_NEW}="$env{ID_FS_TYPE}"
IMPORT{db}="ID_FS_TYPE"
ENV{ID_FS_TYPE}=="LVM2_member|LVM1_member", ENV{.ID_FS_TYPE_NEW}!="LVM2_member|LVM1_member", ENV{LVM_PV_GONE}="1"
ENV{ID_FS_TYPE}="$env{.ID_FS_TYPE_NEW}"
ENV{LVM_PV_GONE}=="1", GOTO="lvm_scan"

# Only process devices already marked as a PV - this requires blkid to be called before.
ENV{ID_FS_TYPE}!="LVM2_member|LVM1_member", GOTO="lvm_end"
ENV{DM_MULTIPATH_DEVICE_PATH}=="1", GOTO="lvm_end"

ACTION=="remove", GOTO="lvm_scan"

# Create /dev/disk/by-id/lvm-pv-uuid-<PV_UUID> symlink for each PV
ENV{ID_FS_UUID_ENC}=="?*", SYMLINK+="disk/by-id/lvm-pv-uuid-$env{ID_FS_UUID_ENC}"

# If the PV is a special device listed below, scan only if the device is
# properly activated. These devices are not usable after an ADD event,
# but they require an extra setup and they are ready after a CHANGE event.
# Also support coldplugging with ADD event but only if the device is already
# properly activated.
# This logic should be eventually moved to rules where those particular
# devices are processed primarily (MD and loop).

# DM device:
KERNEL!="dm-[0-9]*", GOTO="next"
ENV{DM_UDEV_PRIMARY_SOURCE_FLAG}=="1", ENV{DM_ACTIVATION}=="1", GOTO="lvm_scan"
GOTO="lvm_end"

# MD device:
LABEL="next"
KERNEL!="md[0-9]*", GOTO="next"
IMPORT{db}="LVM_MD_PV_ACTIVATED"
ACTION=="add", ENV{LVM_MD_PV_ACTIVATED}=="1", GOTO="lvm_scan"
ACTION=="change", ENV{LVM_MD_PV_ACTIVATED}!="1", TEST=="md/array_state", ENV{LVM_MD_PV_ACTIVATED}="1", GOTO="lvm_scan"
ACTION=="add", KERNEL=="md[0-9]*p[0-9]*", GOTO="lvm_scan"
ENV{LVM_MD_PV_ACTIVATED}!="1", ENV{SYSTEMD_READY}="0"
GOTO="lvm_end"

# Loop device:
LABEL="next"
KERNEL!="loop[0-9]*", GOTO="next"
ACTION=="add", ENV{LVM_LOOP_PV_ACTIVATED}=="1", GOTO="lvm_scan"
ACTION=="change", ENV{LVM_LOOP_PV_ACTIVATED}!="1", TEST=="loop/backing_file", ENV{LVM_LOOP_PV_ACTIVATED}="1", GOTO="lvm_scan"
ENV{LVM_LOOP_PV_ACTIVATED}!="1", ENV{SYSTEMD_READY}="0"
GOTO="lvm_end"

# If the PV is not a special device listed above, scan only if necessary.
# For "systemd_background" mode, systemd takes care of this by activating
# the lvm2-pvscan@.service only once.
LABEL="next"
ACTION!="add|change", GOTO="lvm_end"

LABEL="lvm_scan"

ENV{SYSTEMD_READY}="1"

# The method for invoking pvscan is selected at build time with the option
# --(enable|disable)-udev-systemd-background-jobs to "configure".
# On modern distributions with recent systemd, it's "systemd_background";
# on others, "direct_pvscan".
GOTO="systemd_background"

LABEL="systemd_background"

# The table below summarises the situations in which we reach the LABEL="lvm_scan"
# in the "systemd_background" case.
# Marked by X, X* means only if the special dev is properly set up.
# The artificial ADD is supported for coldplugging. We avoid running the pvscan
# on artificial CHANGE so there's no unexpected autoactivation when WATCH rule fires.
# N.B. MD and loop never actually  reaches lvm_scan on REMOVE as the PV label is gone
# within a CHANGE event (these are caught by the "LVM_PV_GONE" rule at the beginning).
#
# In this case, we simply set up the dependency between the device and the pvscan
# job using SYSTEMD_ALIAS (which sets up a simplified device identifier that
# allows using "BindsTo" in the systemd unit file) and SYSTEMD_WANTS (which tells
# systemd to start the pvscan job once the device is ready).
# We need to set these variables for both "add" and "change" events, otherwise
# systemd may loose information about the device/unit dependencies.
#
#        | real ADD | real CHANGE | artificial ADD | artificial CHANGE | REMOVE
# =============================================================================
#  DM    |          |      X      |       X*       |                   |   X
#  MD    |          |      X      |       X*       |                   |
#  loop  |          |      X      |       X*       |                   |
#  other |    X     |      X      |       X        |                   |   X
ACTION!="remove", ENV{LVM_PV_GONE}=="1", RUN+="/usr/bin/systemd-run /usr/sbin/lvm pvscan --cache $major:$minor", GOTO="lvm_end"
ENV{SYSTEMD_ALIAS}="/dev/block/$major:$minor"
ENV{SYSTEMD_WANTS}+="lvm2-pvscan@$major:$minor.service"
GOTO="lvm_end"

# FIXME: this mode is not used and should be removed.
LABEL="direct_pvscan"

# The table below summarises the situations in which we reach the LABEL="lvm_scan"
# for the "direct_pvscan" case.
# Marked by X, X* means only if the special dev is properly set up.
# The artificial ADD is supported for coldplugging. We avoid running the pvscan
# on artificial CHANGE so there's no unexpected autoactivation when WATCH rule fires.
#
# In this case, we need to make sure that pvscan is not invoked spuriously, therefore
# we invoke it only for "add" events for "other" devices.
#
#        | real ADD | real CHANGE | artificial ADD | artificial CHANGE | REMOVE
# =============================================================================
#  DM    |          |      X      |       X*       |                   |   X
#  MD    |          |      X      |       X*       |                   |
#  loop  |          |      X      |       X*       |                   |
#  other |    X     |             |       X        |                   |   X
RUN+="/usr/sbin/lvm pvscan --background --cache --activate ay --major $major --minor $minor", ENV{LVM_SCANNED}="1"

LABEL="lvm_end"

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	0/root	0755	2026-03-11 09:36:18
..	dir	-	0/root	0755	2026-03-05 10:17:05
01-md-raid-creating.rules	text/plain	321 B	0/root	0644	2025-11-05 10:54:46
10-dm.rules	text/plain	7.1 KB	0/root	0444	2026-01-23 07:31:05
11-dm-lvm.rules	text/plain	2.37 KB	0/root	0444	2026-01-23 07:31:05
11-dm-mpath.rules	text/plain	4.46 KB	0/root	0644	2025-04-22 01:55:39
11-dm-parts.rules	text/plain	1.41 KB	0/root	0644	2025-04-22 01:55:39
13-dm-disk.rules	text/plain	1.75 KB	0/root	0444	2026-01-23 07:31:05
40-elevator.rules	text/plain	728 B	0/root	0644	2026-03-04 08:02:38
40-redhat.rules	text/plain	1.79 KB	0/root	0644	2026-03-04 08:02:42
40-usb-blacklist.rules	text/plain	457 B	0/root	0644	2022-10-08 10:09:12
50-udev-default.rules	text/plain	3.66 KB	0/root	0644	2026-03-04 08:03:20
60-alias-kmsg.rules	text/plain	357 B	0/root	0644	2026-03-04 08:02:44
60-block.rules	text/plain	626 B	0/root	0644	2026-03-04 08:02:38
60-cdrom_id.rules	text/plain	1.05 KB	0/root	0644	2018-06-22 11:11:49
60-drm.rules	text/plain	413 B	0/root	0644	2018-06-22 11:11:49
60-evdev.rules	text/plain	974 B	0/root	0644	2018-06-22 11:11:49
60-fido-id.rules	text/plain	165 B	0/root	0644	2026-03-04 08:02:42
60-input-id.rules	text/plain	282 B	0/root	0644	2018-06-22 11:11:49
60-net.rules	text/plain	129 B	0/root	0644	2025-09-23 08:27:35
60-persistent-alsa.rules	text/plain	616 B	0/root	0644	2018-06-22 11:11:49
60-persistent-input.rules	text/plain	2.65 KB	0/root	0644	2018-06-22 11:11:49
60-persistent-storage-tape.rules	text/plain	1.61 KB	0/root	0644	2026-03-04 08:02:45
60-persistent-storage.rules	text/plain	6.38 KB	0/root	0644	2018-06-22 11:11:49
60-persistent-v4l.rules	text/plain	769 B	0/root	0644	2018-06-22 11:11:49
60-raw.rules	text/plain	326 B	0/root	0644	2026-02-04 08:18:17
60-sensor.rules	text/plain	727 B	0/root	0644	2018-06-22 11:11:49
60-serial.rules	text/plain	1.16 KB	0/root	0644	2018-06-22 11:11:49
60-tpm-udev.rules	text/plain	211 B	0/root	0644	2019-10-17 03:56:47
61-scsi-sg3_id.rules	text/plain	4.67 KB	0/root	0644	2017-09-18 07:15:01
62-multipath.rules	text/plain	3.93 KB	0/root	0644	2025-04-22 01:55:39
63-fc-wwpn-id.rules	text/plain	624 B	0/root	0644	2022-10-08 10:09:12
63-md-raid-arrays.rules	text/plain	2.57 KB	0/root	0644	2025-11-05 10:54:46
63-scsi-sg3_symlink.rules	text/plain	2.82 KB	0/root	0644	2015-10-29 08:52:08
64-btrfs.rules	text/plain	616 B	0/root	0644	2026-03-04 08:03:20
64-md-raid-assembly.rules	text/plain	2.31 KB	0/root	0644	2025-11-05 10:54:46
66-kpartx.rules	text/plain	1.12 KB	0/root	0644	2025-04-22 01:55:39
68-del-part-nodes.rules	text/plain	1.12 KB	0/root	0644	2025-04-22 01:55:39
69-dm-lvm-metad.rules	text/plain	5.69 KB	0/root	0444	2026-01-23 07:31:05
69-md-clustered-confirm-device.rules	text/plain	858 B	0/root	0644	2025-11-05 10:54:46
70-joystick.rules	text/plain	432 B	0/root	0644	2018-06-22 11:11:49
70-mouse.rules	text/plain	734 B	0/root	0644	2018-06-22 11:11:49
70-nvmf-autoconnect.rules	text/plain	1.07 KB	0/root	0644	2021-11-11 09:09:06
70-power-switch.rules	text/plain	568 B	0/root	0644	2018-06-22 11:11:49
70-touchpad.rules	text/plain	473 B	0/root	0644	2018-06-22 11:11:49
70-uaccess.rules	text/plain	2.61 KB	0/root	0644	2018-06-22 11:11:49
71-biosdevname.rules	text/plain	995 B	0/root	0644	2019-10-18 08:07:58
71-nvmf-iopolicy-netapp.rules	text/plain	276 B	0/root	0644	2021-11-11 09:09:06
71-prefixdevname.rules	text/plain	403 B	0/root	0644	2019-12-16 07:52:15
71-seat.rules	text/plain	2.69 KB	0/root	0644	2026-03-04 08:03:19
73-idrac.rules	text/plain	316 B	0/root	0644	2026-03-04 08:02:37
73-seat-late.rules	text/plain	636 B	0/root	0644	2026-03-04 08:03:26
75-net-description.rules	text/plain	452 B	0/root	0644	2018-06-22 11:11:49
75-probe_mtd.rules	text/plain	174 B	0/root	0644	2018-06-22 11:11:49
78-sound-card.rules	text/plain	4.7 KB	0/root	0644	2018-06-22 11:11:49
80-drivers.rules	text/plain	615 B	0/root	0644	2018-06-22 11:11:49
80-net-setup-link.rules	text/plain	292 B	0/root	0644	2018-06-22 11:11:49
80-udisks2.rules	text/plain	9.14 KB	0/root	0644	2025-09-03 09:06:58
84-nm-drivers.rules	text/plain	533 B	0/root	0644	2022-10-10 01:57:58
85-nm-unmanaged.rules	text/plain	1.97 KB	0/root	0644	2022-10-11 07:42:01
90-fwupd-devices.rules	text/plain	281 B	0/root	0644	2022-06-15 11:54:43
90-iprutils.rules	text/plain	70 B	0/root	0644	2020-05-08 02:19:42
90-nm-thunderbolt.rules	text/plain	588 B	0/root	0644	2022-10-10 01:57:58
90-vconsole.rules	text/plain	510 B	0/root	0644	2026-03-04 08:03:19
91-drm-modeset.rules	text/plain	56 B	0/root	0644	2023-10-11 09:18:04
95-dm-notify.rules	text/plain	483 B	0/root	0444	2026-01-23 07:31:05
98-kexec.rules	text/plain	695 B	0/root	0644	2026-02-10 05:24:35
99-nfs.rules	text/plain	95 B	0/root	0644	2026-03-09 01:07:56
99-systemd.rules	text/plain	4.26 KB	0/root	0644	2026-03-04 08:03:20

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