TrxShell [ lionsindia.in ]

Name	Size	Permission
acpi_available	112 B	-rwxr-xr-x
agetty	55.23 KB	-rwxr-xr-x
apm_available	81 B	-rwxr-xr-x
apparmor_parser	1.41 MB	-rwxr-xr-x
badblocks	26.01 KB	-rwxr-xr-x
blkdeactivate	14.49 KB	-rwxr-xr-x
blkdiscard	26.08 KB	-rwxr-xr-x
blkid	86.11 KB	-rwxr-xr-x
blockdev	38.07 KB	-rwxr-xr-x
bridge	86.16 KB	-rwxr-xr-x
capsh	17.99 KB	-rwxr-xr-x
cfdisk	94.44 KB	-rwxr-xr-x
cgdisk	182.17 KB	-rwxr-xr-x
chcpu	22.07 KB	-rwxr-xr-x
cryptdisks_start	1.11 KB	-rwxr-xr-x
cryptdisks_stop	1.16 KB	-rwxr-xr-x
cryptsetup	86.23 KB	-rwxr-xr-x
cryptsetup-reencrypt	80.96 KB	-rwxr-xr-x
ctrlaltdel	18.07 KB	-rwxr-xr-x
debugfs	217.47 KB	-rwxr-xr-x
depmod	146.18 KB	-rwxr-xr-x
devlink	78.16 KB	-rwxr-xr-x
dhclient	488.42 KB	-rwxr-xr-x
dhclient-script	15.25 KB	-rwxr-xr-x
dmeventd	46.08 KB	-rwxr-xr-x
dmsetup	158.8 KB	-rwxr-xr-x
dmstats	158.8 KB	-rwxr-xr-x
dosfsck	58.08 KB	-rwxr-xr-x
dosfslabel	54.08 KB	-rwxr-xr-x
dumpe2fs	26.08 KB	-rwxr-xr-x
e2fsck	306.72 KB	-rwxr-xr-x
e2image	34.08 KB	-rwxr-xr-x
e2label	102.25 KB	-rwxr-xr-x
e2undo	18.07 KB	-rwxr-xr-x
ebtables	5.99 KB	-rwxr-xr-x
ebtables-restore	9.99 KB	-rwxr-xr-x
ebtables-save	1.63 KB	-rwxr-xr-x
ethtool	338.9 KB	-rwxr-xr-x
fatlabel	54.08 KB	-rwxr-xr-x
fdisk	122.13 KB	-rwxr-xr-x
findfs	10.07 KB	-rwxr-xr-x
fixparts	62.17 KB	-rwxr-xr-x
fsadm	23.5 KB	-rwxr-xr-x
fsck	46.13 KB	-rwxr-xr-x
fsck.cramfs	34.11 KB	-rwxr-xr-x
fsck.ext2	306.72 KB	-rwxr-xr-x
fsck.ext3	306.72 KB	-rwxr-xr-x
fsck.ext4	306.72 KB	-rwxr-xr-x
fsck.fat	58.08 KB	-rwxr-xr-x
fsck.minix	90.1 KB	-rwxr-xr-x
fsck.msdos	58.08 KB	-rwxr-xr-x
fsck.vfat	58.08 KB	-rwxr-xr-x
fsck.xfs	433 B	-rwxr-xr-x
fsfreeze	10.07 KB	-rwxr-xr-x
fstab-decode	5.99 KB	-rwxr-xr-x
fstrim	42.08 KB	-rwxr-xr-x
gdisk	190.17 KB	-rwxr-xr-x
getcap	9.99 KB	-rwxr-xr-x
getpcaps	9.99 KB	-rwxr-xr-x
getty	55.23 KB	-rwxr-xr-x
halt	178.08 KB	-rwxr-xr-x
hdparm	128.18 KB	-rwxr-xr-x
hwclock	58.19 KB	-rwxr-xr-x
ifconfig	77.11 KB	-rwxr-xr-x
init	1.54 MB	-rwxr-xr-x
insmod	146.18 KB	-rwxr-xr-x
installkernel	2.58 KB	-rwxr-xr-x
integritysetup	39.66 KB	-rwxr-xr-x
ip	545.12 KB	-rwxr-xr-x
ip6tables	92.74 KB	-rwxr-xr-x
ip6tables-restore	92.74 KB	-rwxr-xr-x
ip6tables-save	92.74 KB	-rwxr-xr-x
ipmaddr	17.99 KB	-rwxr-xr-x
iptables	92.74 KB	-rwxr-xr-x
iptables-restore	92.74 KB	-rwxr-xr-x
iptables-save	92.74 KB	-rwxr-xr-x
iptunnel	21.99 KB	-rwxr-xr-x
iscsi-iname	9.99 KB	-rwxr-xr-x
iscsi_discovery	5.16 KB	-rwxr-xr-x
iscsiadm	381.95 KB	-rwxr-xr-x
iscsid	398.15 KB	-rwxr-xr-x
iscsistart	358.13 KB	-rwxr-xr-x
isosize	22.08 KB	-rwxr-xr-x
kbdrate	9.99 KB	-rwxr-xr-x
killall5	22.08 KB	-rwxr-xr-x
ldconfig	387 B	-rwxr-xr-x
ldconfig.real	1001.67 KB	-rwxr-xr-x
logsave	10 KB	-rwxr-xr-x
losetup	82.19 KB	-rwxr-xr-x
lsmod	146.18 KB	-rwxr-xr-x
lvchange	2.42 MB	-rwxr-xr-x
lvconvert	2.42 MB	-rwxr-xr-x
lvcreate	2.42 MB	-rwxr-xr-x
lvdisplay	2.42 MB	-rwxr-xr-x
lvextend	2.42 MB	-rwxr-xr-x
lvm	2.42 MB	-rwxr-xr-x
lvmconf	12.55 KB	-rwxr-xr-x
lvmconfig	2.42 MB	-rwxr-xr-x
lvmdiskscan	2.42 MB	-rwxr-xr-x
lvmdump	10.07 KB	-rwxr-xr-x
lvmetad	82.13 KB	-rwxr-xr-x
lvmpolld	70.45 KB	-rwxr-xr-x
lvmsadc	2.42 MB	-rwxr-xr-x
lvmsar	2.42 MB	-rwxr-xr-x
lvreduce	2.42 MB	-rwxr-xr-x
lvremove	2.42 MB	-rwxr-xr-x
lvrename	2.42 MB	-rwxr-xr-x
lvresize	2.42 MB	-rwxr-xr-x
lvs	2.42 MB	-rwxr-xr-x
lvscan	2.42 MB	-rwxr-xr-x
mdadm	577.4 KB	-rwxr-xr-x
mdmon	321.24 KB	-rwxr-xr-x
mii-tool	18.46 KB	-rwxr-xr-x
mkdosfs	34.5 KB	-rwxr-xr-x
mke2fs	126.31 KB	-rwxr-xr-x
mkfs	10.07 KB	-rwxr-xr-x
mkfs.bfs	30.08 KB	-rwxr-xr-x
mkfs.cramfs	34.01 KB	-rwxr-xr-x
mkfs.ext2	126.31 KB	-rwxr-xr-x
mkfs.ext3	126.31 KB	-rwxr-xr-x
mkfs.ext4	126.31 KB	-rwxr-xr-x
mkfs.fat	34.5 KB	-rwxr-xr-x
mkfs.minix	78.09 KB	-rwxr-xr-x
mkfs.msdos	34.5 KB	-rwxr-xr-x
mkfs.ntfs	78.11 KB	-rwxr-xr-x
mkfs.vfat	34.5 KB	-rwxr-xr-x
mkfs.xfs	423.52 KB	-rwxr-xr-x
mkhomedir_helper	18.02 KB	-rwxr-xr-x
mkntfs	78.11 KB	-rwxr-xr-x
mkswap	78.08 KB	-rwxr-xr-x
modinfo	146.18 KB	-rwxr-xr-x
modprobe	146.18 KB	-rwxr-xr-x
mount.fuse	9.99 KB	-rwxr-xr-x
mount.lowntfs-3g	106.67 KB	-rwxr-xr-x
mount.ntfs	142.7 KB	-rwxr-xr-x
mount.ntfs-3g	142.7 KB	-rwxr-xr-x
mount.vmhgfs	42.16 KB	-rwxr-xr-x
nameif	14.14 KB	-rwxr-xr-x
ntfsclone	54.12 KB	-rwxr-xr-x
ntfscp	34.1 KB	-rwxr-xr-x
ntfslabel	26.1 KB	-rwxr-xr-x
ntfsresize	70.12 KB	-rwxr-xr-x
ntfsundelete	50.1 KB	-rwxr-xr-x
on_ac_power	2.16 KB	-rwxr-xr-x
pam_extrausers_chkpwd	34 KB	-rwxr-sr-x
pam_extrausers_update	34 KB	-rwxr-xr-x
pam_tally	10.01 KB	-rwxr-xr-x
pam_tally2	14.01 KB	-rwxr-xr-x
parted	78.09 KB	-rwxr-xr-x
partprobe	10.07 KB	-rwxr-xr-x
pivot_root	10.07 KB	-rwxr-xr-x
plipconfig	10 KB	-rwxr-xr-x
plymouthd	90.25 KB	-rwxr-xr-x
poweroff	178.08 KB	-rwxr-xr-x
pvchange	2.42 MB	-rwxr-xr-x
pvck	2.42 MB	-rwxr-xr-x
pvcreate	2.42 MB	-rwxr-xr-x
pvdisplay	2.42 MB	-rwxr-xr-x
pvmove	2.42 MB	-rwxr-xr-x
pvremove	2.42 MB	-rwxr-xr-x
pvresize	2.42 MB	-rwxr-xr-x
pvs	2.42 MB	-rwxr-xr-x
pvscan	2.42 MB	-rwxr-xr-x
rarp	32.45 KB	-rwxr-xr-x
raw	14.07 KB	-rwxr-xr-x
reboot	178.08 KB	-rwxr-xr-x
resize2fs	58.07 KB	-rwxr-xr-x
rmmod	146.18 KB	-rwxr-xr-x
route	64.3 KB	-rwxr-xr-x
rtacct	40.13 KB	-rwxr-xr-x
rtmon	50 KB	-rwxr-xr-x
runlevel	178.08 KB	-rwxr-xr-x
runuser	42.07 KB	-rwxr-xr-x
setcap	9.99 KB	-rwxr-xr-x
setvtrgb	14.13 KB	-rwxr-xr-x
sfdisk	106.08 KB	-rwxr-xr-x
sgdisk	174.17 KB	-rwxr-xr-x
shadowconfig	885 B	-rwxr-xr-x
shutdown	178.08 KB	-rwxr-xr-x
slattach	40.45 KB	-rwxr-xr-x
start-stop-daemon	35.1 KB	-rwxr-xr-x
sulogin	46.08 KB	-rwxr-xr-x
swaplabel	14.07 KB	-rwxr-xr-x
swapoff	18.07 KB	-rwxr-xr-x
swapon	46.08 KB	-rwxr-xr-x
switch_root	14.07 KB	-rwxr-xr-x
sysctl	22.07 KB	-rwxr-xr-x
tc	453.79 KB	-rwxr-xr-x
telinit	178.08 KB	-rwxr-xr-x
tipc	53.99 KB	-rwxr-xr-x
tune2fs	102.25 KB	-rwxr-xr-x
udevadm	574.4 KB	-rwxr-xr-x
unix_chkpwd	34 KB	-rwxr-sr-x
unix_update	34 KB	-rwxr-xr-x
ureadahead	34.34 KB	-rwxr-xr-x
veritysetup	35.45 KB	-rwxr-xr-x
vgcfgbackup	2.42 MB	-rwxr-xr-x
vgcfgrestore	2.42 MB	-rwxr-xr-x
vgchange	2.42 MB	-rwxr-xr-x
vgck	2.42 MB	-rwxr-xr-x
vgconvert	2.42 MB	-rwxr-xr-x
vgcreate	2.42 MB	-rwxr-xr-x
vgdisplay	2.42 MB	-rwxr-xr-x
vgexport	2.42 MB	-rwxr-xr-x
vgextend	2.42 MB	-rwxr-xr-x
vgimport	2.42 MB	-rwxr-xr-x
vgimportclone	2.42 MB	-rwxr-xr-x
vgmerge	2.42 MB	-rwxr-xr-x
vgmknodes	2.42 MB	-rwxr-xr-x
vgreduce	2.42 MB	-rwxr-xr-x
vgremove	2.42 MB	-rwxr-xr-x
vgrename	2.42 MB	-rwxr-xr-x
vgs	2.42 MB	-rwxr-xr-x
vgscan	2.42 MB	-rwxr-xr-x
vgsplit	2.42 MB	-rwxr-xr-x
wipefs	38.08 KB	-rwxr-xr-x
xfs_repair	631.16 KB	-rwxr-xr-x
xtables-multi	92.74 KB	-rwxr-xr-x
zramctl	90.19 KB	-rwxr-xr-x

Code Editor : blkdeactivate

#!/bin/bash
#
# Copyright (C) 2012-2017 Red Hat, Inc. All rights reserved.
#
# This file is part of LVM2.
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions
# of the GNU General Public License v.2.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
# Author: Peter Rajnoha <prajnoha at redhat.com>
#
# Script for deactivating block devices
#
# Requires:
#   bash >= 4.0 (associative array support)
#   util-linux {
#       lsblk >= 2.22 (lsblk -s support)
#       umount
#   }
#   dmsetup >= 1.02.68 (--retry option support)
#   lvm >= 2.2.89 (activation/retry_deactivation config support)
#

#set -x
shopt -s dotglob nullglob

TOOL=blkdeactivate

sbindir="/sbin"

DEV_DIR="/dev"
SYS_BLK_DIR="/sys/block"

MOUNTPOINT="/bin/mountpoint"
UMOUNT="/bin/umount"
DMSETUP="$sbindir/dmsetup"
LVM="$sbindir/lvm"
MDADM="$sbindir/mdadm"
MPATHD="/sbin/multipathd"

if "$UMOUNT" --help | grep -- "--all-targets" >"$DEV_DIR/null"; then
	UMOUNT_OPTS="--all-targets "
else
	UMOUNT_OPTS=""
	FINDMNT="/bin/findmnt -r --noheadings -u -o TARGET"
	FINDMNT_READ="read -r mnt"
fi
DMSETUP_OPTS=""
LVM_OPTS=""
MDADM_OPTS=""
MPATHD_OPTS=""

LSBLK="/bin/lsblk -r --noheadings -o TYPE,KNAME,NAME,MOUNTPOINT"
LSBLK_VARS="local devtype local kname local name local mnt"
LSBLK_READ="read -r devtype kname name mnt"
SORT_MNT="/usr/bin/sort -r -u -k 4"

# Do not show tool errors by default (only done/skipping summary
# message provided by this script) and no verbose mode by default.
ERRORS=0
VERBOSE=0

# Do not unmount mounted devices by default.
DO_UMOUNT=0

# Deactivate each LV separately by default (not the whole VG).
LVM_DO_WHOLE_VG=0
# Do not retry LV deactivation by default.
LVM_CONFIG="activation{retry_deactivation=0}"

# Do not wait for MD RAID device resync, recovery or reshape.
MDRAID_DO_WAIT=0

# Do not disable queueing if set on multipath devices.
MPATHD_DO_DISABLEQUEUEING=0

#
# List of device names and/or VGs to be skipped.
# Device name is the KNAME from lsblk output.
#
# If deactivation of any device fails, it's automatically
# added to the SKIP_DEVICE_LIST (also a particular VG
# added to the SKIP_VG_LIST for a device that is an LV).
#
# These lists provide device tree pruning to skip
# particular device/VG deactivation that failed already.
# (lists are associative arrays!)
#
declare -A SKIP_DEVICE_LIST=()
declare -A SKIP_VG_LIST=()

#
# List of mountpoints to be skipped. Any device that is mounted on the mountpoint
# listed here will be added to SKIP_DEVICE_LIST (and SKIP_VG_LIST) automatically.
# (list is an associative array!)
#
declare -A SKIP_UMOUNT_LIST=(["/"]=1 \
                             ["/lib"]=1 ["/lib64"]=1 \
                             ["/bin"]=1 ["/sbin"]=1 \
                             ["/var"]=1 ["/var/log"]=1 \
                             ["/usr"]=1 \
                             ["/usr/lib"]=1 ["/usr/lib64"]=1 \
                             ["/usr/sbin"]=1 ["/usr/bin"]=1)
# Bash can't properly handle '[' and ']' used as a subscript
# within the '()'initialization - it needs to be done separately!
SKIP_UMOUNT_LIST["[SWAP]"]=1

usage() {
	echo "${TOOL}: Utility to deactivate block devices"
	echo
	echo "  ${TOOL} [options] [device...]"
	echo "    - Deactivate block device tree."
	echo "      If devices are specified, deactivate only supplied devices and their holders."
	echo
	echo "  Options:"
	echo "    -e | --errors                       Show errors reported from tools"
	echo "    -h | --help                         Show this help message"
	echo "    -d | --dmoptions     DM_OPTIONS     Comma separated DM specific options"
	echo "    -l | --lvmoptions    LVM_OPTIONS    Comma separated LVM specific options"
	echo "    -m | --mpathoptions  MPATH_OPTIONS  Comma separated DM-multipath specific options"
	echo "    -r | --mdraidoptions MDRAID_OPTIONS Comma separated MD RAID specific options"
	echo "    -u | --umount                       Unmount the device if mounted"
	echo "    -v | --verbose                      Verbose mode (also implies -e)"
	echo
	echo "  Device specific options:"
	echo "    DM_OPTIONS:"
	echo "      retry           retry removal several times in case of failure"
	echo "      force           force device removal"
	echo "    LVM_OPTIONS:"
	echo "      retry           retry removal several times in case of failure"
	echo "      wholevg         deactivate the whole VG when processing an LV"
	echo "    MDRAID_OPTIONS:"
	echo "      wait            wait for resync, recovery or reshape to complete first"
	echo "    MPATH_OPTIONS:"
	echo "      disablequeueing disable queueing on all DM-multipath devices first"

exit
}

add_device_to_skip_list() {
	SKIP_DEVICE_LIST+=(["$kname"]=1)
	return 1
}

add_vg_to_skip_list() {
	SKIP_VG_LIST+=(["$DM_VG_NAME"]=1)
	return 1
}

is_top_level_device() {
	# top level devices do not have any holders, that is
	# the SYS_BLK_DIR/<device_name>/holders dir is empty
	files=$(echo "$SYS_BLK_DIR/$kname/holders/"*)
	test -z "$files"
}

device_umount_one() {
	test -z "$mnt" && return 0

if test -z "${SKIP_UMOUNT_LIST["$mnt"]}" -a "$DO_UMOUNT" -eq "1"; then
		echo -n "  [UMOUNT]: unmounting $name ($kname) mounted on $mnt... "
		if eval "$UMOUNT" $UMOUNT_OPTS "$(printf "%s" "$mnt")" "$OUT" "$ERR"; then
			echo "done"
		elif "$MOUNTPOINT" -q "$mnt"; then
			echo "skipping"
			add_device_to_skip_list
		else
			echo "already unmounted"
		fi
	else
		echo "  [SKIP]: unmount of $name ($kname) mounted on $mnt"
		add_device_to_skip_list
	fi
}

device_umount() {
	test "$devtype" != "lvm" && test "${kname:0:3}" != "dm-" \
          && test "${kname:0:2}" != "md" && return 0

# FINDMNT is defined only if umount --all-targets is not available.
	# In that case, read the list of multiple mount points of one device
	# using FINDMNT and unmount it one by one manually.
	if test -z "$FINDMNT"; then
		device_umount_one
	else
		while $FINDMNT_READ; do
			device_umount_one || return 1
		done <<< "$($FINDMNT "$DEV_DIR/$kname")"
	fi

}

deactivate_holders () {
	local skip=1; $LSBLK_VARS

# Get holders for the device - either a mount or another device.
	# First line on the lsblk output is the device itself - skip it for
	# the deactivate call as this device is already being deactivated.
	while $LSBLK_READ; do
		test -e "$SYS_BLK_DIR/$kname" || continue
		# check if the device not on the skip list already
		test -z "${SKIP_DEVICE_LIST["$kname"]}" || return 1

# try to deactivate the holder
		test "$skip" -eq 1 && skip=0 && continue
		deactivate || return 1
	done <<< "$($LSBLK "$1")"
}

deactivate_dm () {
	local xname
	xname=$(printf "%s" "$name")
	test -b "$DEV_DIR/mapper/$xname" || return 0
	test -z "${SKIP_DEVICE_LIST["$kname"]}" || return 1

deactivate_holders "$DEV_DIR/mapper/$xname" || return 1

echo -n "  [DM]: deactivating $devtype device $xname ($kname)... "
	if eval "$DMSETUP" $DMSETUP_OPTS remove "$xname" "$OUT" "$ERR"; then
		echo "done"
	else
		echo "skipping"
		add_device_to_skip_list
	fi
}

deactivate_lvm () {
	local DM_VG_NAME; local DM_LV_NAME

eval "$(eval "$DMSETUP" splitname --nameprefixes --noheadings --rows "$name" LVM "$ERR")"
	test -b "$DEV_DIR/$DM_VG_NAME/$DM_LV_NAME" || return 0
	test -z "${SKIP_VG_LIST["$DM_VG_NAME"]}" || return 1

if test "$LVM_DO_WHOLE_VG" -eq 0; then
		# Skip LVM device deactivation if LVM tools missing.
		test "$LVM_AVAILABLE" -eq 0 && {
			add_device_to_skip_list
			return 1
		}
		# Deactivating only the LV specified
		deactivate_holders "$DEV_DIR/$DM_VG_NAME/$DM_LV_NAME" || {
			add_device_to_skip_list
			return 1
		}

echo -n "  [LVM]: deactivating Logical Volume $DM_VG_NAME/$DM_LV_NAME... "
		if eval "$LVM" lvchange $LVM_OPTS --config \'log\{prefix=\"\"\} $LVM_CONFIG\' -aln "$DM_VG_NAME/$DM_LV_NAME" "$OUT" "$ERR"; then
			echo "done"
		else
			echo "skipping"
			add_device_to_skip_list
		fi

else
		# Skip LVM VG deactivation if LVM tools missing.
		test "$LVM_AVAILABLE" -eq 0 && {
			add_vg_to_skip_list
			return 1
		}
		# Deactivating the whole VG the LV is part of
		lv_list=$(eval "$LVM" vgs --config "$LVM_CONFIG" --noheadings --rows -o lv_name "$DM_VG_NAME" "$ERR")
		for lv in $lv_list; do
			test -b "$DEV_DIR/$DM_VG_NAME/$lv" || continue
			deactivate_holders "$DEV_DIR/$DM_VG_NAME/$lv" || {
				add_vg_to_skip_list
				return 1
			}
		done

echo -n "  [LVM]: deactivating Volume Group $DM_VG_NAME... "
		if eval "$LVM" vgchange $LVM_OPTS --config \'log\{prefix=\"    \"\} $LVM_CONFIG\' -aln "$DM_VG_NAME" "$OUT" "$ERR"; then
			echo "done"
		else
			echo "skipping"
			add_vg_to_skip_list
		fi
	fi
}

deactivate_md () {
	local xname
	xname=$(printf "%s" "$name")
	local sync_action
	test -b "$DEV_DIR/$xname" || return 0
	test -z "${SKIP_DEVICE_LIST["$kname"]}" || return 1

# Skip MD device deactivation if MD tools missing.
	test "$MDADM_AVAILABLE" -eq 0 && {
		add_device_to_skip_list
		return 1
	}

deactivate_holders "$DEV_DIR/$xname" || return 1

echo -n "  [MD]: deactivating $devtype device $kname... "

test "$MDRAID_DO_WAIT" -eq 1 && {
		sync_action=$(cat "$SYS_BLK_DIR/$kname/md/sync_action")
		test "$sync_action" != "idle" && {
			echo -n "$sync_action action in progress... "
			if eval "$MDADM" $MDADM_OPTS -W "$DEV_DIR/$kname" "$OUT" "$ERR"; then
				echo -n "complete... "
			else
				test $? -ne 1 && echo -n "failed to wait for $sync_action action... "
			fi
		}
	}

if eval "$MDADM" $MDADM_OPTS -S "$xname" "$OUT" "$ERR"; then
		echo "done"
	else
		echo "skipping"
		add_device_to_skip_list
	fi
}

deactivate () {
	######################################################################
	# DEACTIVATION HOOKS FOR NEW DEVICE TYPES GO HERE!                   #
	#                                                                    #
	# Identify a new device type either by inspecting the TYPE provided  #
	# by lsblk directly ($devtype) or by any other mean that is suitable #
	# e.g. the KNAME provided by lsblk ($kname). See $LSBLK_VARS for     #
	# complete list of variables that may be used. Then call a           #
	# device-specific deactivation function that handles the exact type. #
	#                                                                    #
        # This device-specific function will certainly need to call          #
	# deactivate_holders first to recursively deactivate any existing    #
	# holders it might have before deactivating the device it processes. #
	######################################################################
	if test "$devtype" = "lvm"; then
		deactivate_lvm
	elif test "${kname:0:3}" = "dm-"; then
		deactivate_dm
	elif test "${kname:0:2}" = "md"; then
		deactivate_md
	fi
}

deactivate_all() {
	$LSBLK_VARS
	skip=0

echo "Deactivating block devices:"

test "$MPATHD_RUNNING" -eq 1 && {
		echo -n "  [DM]: disabling queueing on all multipath devices... "
		eval "$MPATHD" $MPATHD_OPTS disablequeueing maps "$ERR" | grep '^ok$' >"$DEV_DIR/null" && echo "done" || echo "failed"
	}

if test $# -eq 0; then
		#######################
		# Process all devices #
		#######################

# Unmount all relevant mountpoints first
		while $LSBLK_READ; do
			device_umount
		done <<< "$($LSBLK | $SORT_MNT)"

# Do deactivate
		while $LSBLK_READ; do
			# 'disk' is at the bottom already and it's a real device
			test "$devtype" = "disk" && continue

# if deactivation of any device fails, skip processing
			# any subsequent devices within its subtree as the
			# top-level device could not be deactivated anyway
			test "$skip" -eq 1 && {
				# reset 'skip' on top level device
				if is_top_level_device ; then
					skip=0
				else
					continue
				fi
			}

# check if the device is not on the skip list already
			test -z "${SKIP_DEVICE_LIST["$kname"]}" || continue

# try to deactivate top-level device, set 'skip=1'
			# if it fails to do so - this will cause all the
			# device's subtree to be skipped when processing
			# devices further in this loop
			deactivate || skip=1
		done <<< "$($LSBLK -s)"
	else
		##################################
		# Process only specified devices #
		##################################

while test $# -ne 0; do
			# Unmount all relevant mountpoints first
			while $LSBLK_READ; do
				device_umount
			done <<< "$($LSBLK "$1" | $SORT_MNT)"

# Do deactivate
			# Single dm device tree deactivation.
			if test -b "$1"; then
				$LSBLK_READ <<< "$($LSBLK --nodeps "$1")"

# check if the device is not on the skip list already
				test -z "${SKIP_DEVICE_LIST["$kname"]}" || {
					shift
					continue
				}

deactivate
			else
				echo "$1: device not found"
				return 1
			fi
			shift
		done;
	fi
}

get_dmopts() {
	ORIG_IFS=$IFS; IFS=','

for opt in $1; do
		case $opt in
			"") ;;
			"retry") DMSETUP_OPTS+="--retry " ;;
			"force") DMSETUP_OPTS+="--force " ;;
			*) echo "$opt: unknown DM option"
		esac
	done

IFS=$ORIG_IFS
}

get_lvmopts() {
	ORIG_IFS=$IFS; IFS=','

for opt in $1; do
		case "$opt" in
			"") ;;
			"retry") LVM_CONFIG="activation{retry_deactivation=1}" ;;
			"wholevg") LVM_DO_WHOLE_VG=1 ;;
			*) echo "$opt: unknown LVM option"
		esac
	done

IFS=$ORIG_IFS
}

get_mdraidopts() {
	ORIG_IFS=$IFS; IFS=','

for opt in $1; do
		case "$opt" in
			"") ;;
			"wait") MDRAID_DO_WAIT=1 ;;
			*) echo "$opt: unknown MD RAID option"
		esac
	done

IFS=$ORIG_IFS
}

get_mpathopts() {
	ORIG_IFS=$IFS; IFS=','

for opt in $1; do
		case "$opt" in
			"") ;;
			"disablequeueing") MPATHD_DO_DISABLEQUEUEING=1 ;;
			*) echo "$opt: unknown DM-multipath option"
		esac
	done

IFS=$ORIG_IFS
}

set_env() {
	if test "$ERRORS" -eq "1"; then
		unset ERR
	else
		ERR="2>$DEV_DIR/null"
	fi

if test "$VERBOSE" -eq "1"; then
		unset OUT
		UMOUNT_OPTS+="-v"
		DMSETUP_OPTS+="-vvvv"
		LVM_OPTS+="-vvvv"
		MDADM_OPTS+="-vv"
		MPATHD_OPTS+="-v 3"
	else
		OUT="1>$DEV_DIR/null"
	fi

if test -f "$LVM"; then
		LVM_AVAILABLE=1
	else
		LVM_AVAILABLE=0
	fi

if test -f $MDADM; then
		MDADM_AVAILABLE=1
	else
		MDADM_AVAILABLE=0
	fi

MPATHD_RUNNING=0
	test "$MPATHD_DO_DISABLEQUEUEING" -eq 1 && {
		if test -f "$MPATHD"; then
			if eval "$MPATHD" show daemon "$ERR" | grep "running" >"$DEV_DIR/null"; then
				MPATHD_RUNNING=1
			fi
		fi
	}
}

while test $# -ne 0; do
	case "$1" in
		"") ;;
		"-e"|"--errors") ERRORS=1 ;;
		"-h"|"--help") usage ;;
		"-d"|"--dmoptions") get_dmopts "$2" ; shift ;;
		"-l"|"--lvmoptions") get_lvmopts "$2" ; shift ;;
		"-m"|"--mpathoptions") get_mpathopts "$2" ; shift ;;
		"-r"|"--mdraidoptions") get_mdraidopts "$2"; shift ;;
		"-u"|"--umount") DO_UMOUNT=1 ;;
		"-v"|"--verbose") VERBOSE=1 ; ERRORS=1 ;;
		"-vv") VERBOSE=1 ; ERRORS=1 ; set -x ;;
		*) break ;;
	esac
	shift
done

set_env
deactivate_all "$@"

${this.title}

Code Editor : blkdeactivate