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PATH: usr / lib / udev / rules.d

# Copyright (C) 2009 Red Hat, Inc. All rights reserved.
#
# This file is part of LVM2.

# Udev rules for LVM.
#
# These rules create symlinks for LVM logical volumes in
# /dev/VG directory (VG is an actual VG name). Some udev
# environment variables are set (they can be used in later
# rules as well):
#   DM_LV_NAME - logical volume name
#   DM_VG_NAME - volume group name
#   DM_LV_LAYER - logical volume layer (blank if not set)

# "add" event is processed on coldplug only!
ACTION!="add|change", GOTO="lvm_end"
ENV{DM_UDEV_RULES_VSN}!="?*", GOTO="lvm_end"
ENV{DM_UUID}!="LVM-?*", GOTO="lvm_end"

# Use DM name and split it up into its VG/LV/layer constituents.
IMPORT{program}="/usr/sbin/dmsetup splitname --nameprefixes --noheadings --rows $env{DM_NAME}"

# DM_SUBSYSTEM_UDEV_FLAG0 is the 'NOSCAN' flag for LVM subsystem.
# This flag is used to temporarily disable selected rules to prevent any
# processing or scanning done on the LVM volume before LVM has any chance
# to zero any stale metadata found within the LV data area. Such stale
# metadata could cause false claim of the LV device, keeping it open etc.
#
# If the NOSCAN flag is present, backup selected existing flags used to
# disable rules, then set them firmly so those selected rules are surely skipped.
# Restore these flags once the NOSCAN flag is dropped (which is normally any
# uevent that follows for this LV, even an artificially generated one).
ENV{DM_SUBSYSTEM_UDEV_FLAG0}=="1", ENV{DM_NOSCAN}="1", ENV{DM_DISABLE_OTHER_RULES_FLAG_OLD}="$env{DM_UDEV_DISABLE_OTHER_RULES_FLAG}", ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG}="1"
ENV{DM_SUBSYSTEM_UDEV_FLAG0}!="1", IMPORT{db}="DM_NOSCAN", IMPORT{db}="DM_DISABLE_OTHER_RULES_FLAG_OLD"
ENV{DM_SUBSYSTEM_UDEV_FLAG0}!="1", ENV{DM_NOSCAN}=="1", ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG}="$env{DM_DISABLE_OTHER_RULES_FLAG_OLD}", \
				   ENV{DM_DISABLE_OTHER_RULES_FLAG_OLD}="", ENV{DM_NOSCAN}=""

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

OPTIONS+="event_timeout=180"

# Do not create symlinks for inappropriate subdevices.
ENV{DM_LV_NAME}=="pvmove?*|?*_vorigin", GOTO="lvm_disable"
ENV{DM_LV_LAYER}=="?*", GOTO="lvm_disable"

# Create symlinks for top-level devices only.
ENV{DM_VG_NAME}=="?*", ENV{DM_LV_NAME}=="?*", SYMLINK+="$env{DM_VG_NAME}/$env{DM_LV_NAME}", GOTO="lvm_end"

LABEL="lvm_disable"
ENV{DM_UDEV_DISABLE_DISK_RULES_FLAG}="1"
ENV{DM_UDEV_DISABLE_OTHER_RULES_FLAG}="1"
OPTIONS:="nowatch"

LABEL="lvm_end"

[+] ..
[-] 60-raw.rules [edit]
[-] 10-dm.rules [edit]
[-] 13-dm-disk.rules [edit]
[-] 95-dm-notify.rules [edit]
[-] 40-redhat.rules [edit]
[-] 42-usb-hid-pm.rules [edit]
[-] 85-nm-unmanaged.rules [edit]
[-] 50-udev-default.rules [edit]
[-] 60-alias-kmsg.rules [edit]
[-] 60-cdrom_id.rules [edit]
[-] 60-drm.rules [edit]
[-] 60-evdev.rules [edit]
[-] 60-keyboard.rules [edit]
[-] 90-alsa-tools-firmware.rules [edit]
[-] 60-persistent-alsa.rules [edit]
[-] 60-fprint-autosuspend.rules [edit]
[-] 60-persistent-input.rules [edit]
[-] 70-hypervvss.rules [edit]
[-] 60-persistent-serial.rules [edit]
[-] 90-iprutils.rules [edit]
[-] 60-persistent-storage-tape.rules [edit]
[-] 70-hypervkvp.rules [edit]
[-] 60-persistent-storage.rules [edit]
[-] 70-hypervfcopy.rules [edit]
[-] 60-persistent-v4l.rules [edit]
[-] 64-btrfs-dm.rules [edit]
[-] 61-accelerometer.rules [edit]
[-] 64-btrfs.rules [edit]
[-] 70-mouse.rules [edit]
[-] 90-nm-thunderbolt.rules [edit]
[-] 70-power-switch.rules [edit]
[-] 70-touchpad.rules [edit]
[-] 70-uaccess.rules [edit]
[-] 71-seat.rules [edit]
[-] 73-idrac.rules [edit]
[-] 73-seat-late.rules [edit]
[-] 69-md-clustered-confirm-device.rules [edit]
[-] 75-net-description.rules [edit]
[-] 75-probe_mtd.rules [edit]
[-] 63-fc-wwpn-id.rules [edit]
[-] 75-tty-description.rules [edit]
[-] 76-phys-port-name.rules [edit]
[-] 78-sound-card.rules [edit]
[-] 80-drivers.rules [edit]
[-] 80-net-name-slot.rules [edit]
[-] 80-net-setup-link.rules [edit]
[-] 90-vconsole.rules [edit]
[-] 95-udev-late.rules [edit]
[-] 99-systemd.rules [edit]
[-] 60-net.rules [edit]
[-] 81-kvm-rhel.rules [edit]
[-] 98-kexec.rules [edit]
[-] 11-dm-lvm.rules [edit]
[-] 69-dm-lvm-metad.rules [edit]
[-] 40-usb_modeswitch.rules [edit]
[-] 91-drm-modeset.rules [edit]
[-] 84-nm-drivers.rules [edit]
[-] 71-biosdevname.rules [edit]
[-] 85-regulatory.rules [edit]
[-] 01-md-raid-creating.rules [edit]
[-] 63-md-raid-arrays.rules [edit]
[-] 65-md-incremental.rules [edit]
[-] 40-redhat-disable-dell-ir-camera.rules [edit]
[-] 40-redhat-disable-lenovo-ir-camera.rules [edit]