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File Content: `69-dm-lvm-metad.rules`

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

# Udev rules for LVM.
#
# Scan all block devices having a PV label for LVM metadata.
# Store this information in LVMetaD (the LVM metadata daemon) and maintain LVM
# metadata state for improved performance by avoiding further scans while
# running subsequent LVM commands or while using lvm2app library.
# Also, notify LVMetaD about any relevant block device removal.
#
# This rule is essential for having the information in LVMetaD up-to-date.
# It also 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"

# 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}="$env{ID_FS_TYPE}"
IMPORT{db}="ID_FS_TYPE"
ENV{ID_FS_TYPE}=="LVM2_member|LVM1_member", ENV{.ID_FS_TYPE_NEW}!="LVM2_member|LVM1_member", ENV{LVM_PV_GONE}="1"
ENV{ID_FS_TYPE}="$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"

# Inform lvmetad about any PV that is gone.
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 "direct_pvscan" mode (see below), this means run rules only an ADD events.
# 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 sytemd 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"

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	Size	Permission
01-md-raid-creating.rules	321 bytes	0644
10-dm.rules	7266 bytes	0444
11-dm-lvm.rules	2454 bytes	0444
13-dm-disk.rules	1794 bytes	0444
40-redhat-disable-dell-ir-camera.rules	135 bytes	0644
40-redhat-disable-lenovo-ir-camera.rules	496 bytes	0644
40-redhat.rules	1786 bytes	0644
42-usb-hid-pm.rules	2207 bytes	0644
50-udev-default.rules	3284 bytes	0644
60-alias-kmsg.rules	357 bytes	0644
60-cdrom_id.rules	910 bytes	0644
60-drm.rules	153 bytes	0644
60-evdev.rules	532 bytes	0644
60-keyboard.rules	821 bytes	0644
60-net.rules	129 bytes	0644
60-persistent-alsa.rules	616 bytes	0644
60-persistent-input.rules	2464 bytes	0644
60-persistent-serial.rules	947 bytes	0644
60-persistent-storage-tape.rules	1563 bytes	0644
60-persistent-storage.rules	7272 bytes	0644
60-persistent-v4l.rules	769 bytes	0644
60-raw.rules	326 bytes	0644
61-accelerometer.rules	166 bytes	0644
63-md-raid-arrays.rules	2377 bytes	0644
64-btrfs-dm.rules	387 bytes	0644
64-btrfs.rules	418 bytes	0644
65-md-incremental.rules	2992 bytes	0644
69-dm-lvm-metad.rules	6375 bytes	0444
69-md-clustered-confirm-device.rules	858 bytes	0644
70-mouse.rules	734 bytes	0644
70-power-switch.rules	706 bytes	0644
70-touchpad.rules	345 bytes	0644
70-uaccess.rules	2591 bytes	0644
71-biosdevname.rules	1086 bytes	0644
71-seat.rules	2360 bytes	0644
73-idrac.rules	316 bytes	0644
73-seat-late.rules	596 bytes	0644
75-net-description.rules	452 bytes	0644
75-probe_mtd.rules	174 bytes	0644
75-tty-description.rules	426 bytes	0644
76-phys-port-name.rules	473 bytes	0644
78-sound-card.rules	4400 bytes	0644
80-drivers.rules	618 bytes	0644
80-net-name-slot.rules	491 bytes	0644
80-net-setup-link.rules	292 bytes	0644
81-kvm-rhel.rules	92 bytes	0644
90-iprutils.rules	70 bytes	0644
90-vconsole.rules	441 bytes	0644
91-drm-modeset.rules	56 bytes	0644
95-dm-notify.rules	483 bytes	0444
95-udev-late.rules	155 bytes	0644
98-kexec.rules	695 bytes	0644
99-systemd.rules	4072 bytes	0644

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

File Content: `69-dm-lvm-metad.rules`