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# 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"

# XXX: Properly call blkid on md devices. Workaround for #793631
KERNEL!="md[0-9]*", GOTO="next"
IMPORT{builtin}="blkid"
LABEL="next"

# 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", 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", 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"
TEST!="/run/systemd/system", ACTION!="add", GOTO="lvm_end"
TEST=="/run/systemd/system", 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".
TEST!="/run/systemd/system", GOTO="direct_pvscan"
TEST=="/run/systemd/system", 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 /sbin/lvm pvscan --cache $major:$minor", GOTO="lvm_end"
ENV{SYSTEMD_ALIAS}="/dev/block/$major:$minor"
ENV{ID_MODEL}="LVM PV $env{ID_FS_UUID_ENC} on /dev/$name"
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+="/sbin/lvm pvscan --cache --activate ay --major $major --minor $minor", ENV{LVM_SCANNED}="1"

LABEL="lvm_end"

Filemanager

Name Type Size Permission Actions
01-md-raid-creating.rules File 321 B 0644
39-usbmuxd.rules File 947 B 0644
40-usb_modeswitch.rules File 39.91 KB 0644
40-vm-hotadd.rules File 655 B 0644
50-apport.rules File 165 B 0644
50-firmware.rules File 210 B 0644
50-udev-default.rules File 3.53 KB 0644
55-dm.rules File 7.1 KB 0644
56-lvm.rules File 2.39 KB 0644
60-block.rules File 620 B 0644
60-bridge-network-interface.rules File 65 B 0644
60-cdrom_id.rules File 1.05 KB 0644
60-crda.rules File 69 B 0644
60-drm.rules File 413 B 0644
60-evdev.rules File 974 B 0644
60-input-id.rules File 282 B 0644
60-open-vm-tools.rules File 250 B 0644
60-persistent-alsa.rules File 616 B 0644
60-persistent-input.rules File 2.65 KB 0644
60-persistent-storage-dm.rules File 1.75 KB 0644
60-persistent-storage-tape.rules File 1.47 KB 0644
60-persistent-storage.rules File 6.37 KB 0644
60-persistent-v4l.rules File 769 B 0644
60-sensor.rules File 727 B 0644
60-serial.rules File 1.16 KB 0644
61-persistent-storage-android.rules File 456 B 0644
63-md-raid-arrays.rules File 2.08 KB 0644
64-btrfs-dm.rules File 387 B 0644
64-btrfs.rules File 570 B 0644
64-md-raid-assembly.rules File 1.41 KB 0644
64-xorg-xkb.rules File 257 B 0644
65-libwacom.rules File 46.07 KB 0644
66-azure-ephemeral.rules File 1.91 KB 0644
66-snapd-autoimport.rules File 190 B 0644
69-bcache.rules File 1.02 KB 0644
69-lvm-metad.rules File 6.51 KB 0644
69-md-clustered-confirm-device.rules File 846 B 0644
69-wacom.rules File 1.12 KB 0644
70-iscsi-disk.rules File 253 B 0644
70-iscsi-network-interface.rules File 226 B 0644
70-joystick.rules File 432 B 0644
70-mouse.rules File 734 B 0644
70-power-switch.rules File 568 B 0644
70-touchpad.rules File 473 B 0644
70-uaccess.rules File 2.62 KB 0644
71-power-switch-proliant.rules File 461 B 0644
71-seat.rules File 2.69 KB 0644
73-seat-late.rules File 636 B 0644
73-special-net-names.rules File 961 B 0644
73-usb-net-by-mac.rules File 1.26 KB 0644
75-net-description.rules File 452 B 0644
75-probe_mtd.rules File 174 B 0644
77-mm-cinterion-port-types.rules File 626 B 0644
77-mm-dell-port-types.rules File 958 B 0644
77-mm-ericsson-mbm.rules File 7.56 KB 0644
77-mm-fibocom-port-types.rules File 608 B 0644
77-mm-haier-port-types.rules File 507 B 0644
77-mm-huawei-net-port-types.rules File 1.98 KB 0644
77-mm-longcheer-port-types.rules File 12.64 KB 0644
77-mm-mtk-port-types.rules File 2.96 KB 0644
77-mm-nokia-port-types.rules File 1.9 KB 0644
77-mm-pcmcia-device-blacklist.rules File 388 B 0644
77-mm-qdl-device-blacklist.rules File 3.08 KB 0644
77-mm-sierra.rules File 401 B 0644
77-mm-simtech-port-types.rules File 1.71 KB 0644
77-mm-telit-port-types.rules File 2.02 KB 0644
77-mm-ublox-port-types.rules File 3.14 KB 0644
77-mm-usb-device-blacklist.rules File 8.56 KB 0644
77-mm-usb-serial-adapters-greylist.rules File 2.42 KB 0644
77-mm-x22x-port-types.rules File 3.59 KB 0644
77-mm-zte-port-types.rules File 14.38 KB 0644
78-graphics-card.rules File 965 B 0644
78-sound-card.rules File 4.7 KB 0644
80-debian-compat.rules File 1.34 KB 0644
80-drivers.rules File 615 B 0644
80-libinput-device-groups.rules File 277 B 0644
80-mm-candidate.rules File 972 B 0644
80-net-setup-link.rules File 295 B 0644
80-udisks2.rules File 8.91 KB 0644
84-nm-drivers.rules File 523 B 0644
85-hdparm.rules File 82 B 0644
85-nm-unmanaged.rules File 1.64 KB 0644
85-regulatory.rules File 221 B 0644
90-console-setup.rules File 265 B 0644
90-libinput-model-quirks.rules File 1.84 KB 0644
90-pulseaudio.rules File 7.17 KB 0644
95-dm-notify.rules File 479 B 0644
95-ucm-soundcard-name.rules File 427 B 0644
95-upower-csr.rules File 2.56 KB 0644
95-upower-hid.rules File 7.92 KB 0644
95-upower-wup.rules File 354 B 0644
99-systemd.rules File 4.26 KB 0644
99-vmware-scsi-udev.rules File 433 B 0644