List command provides the functionality of listing useful information
about the logical volumes, file systems and devices.
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
---
scripts/fsadm.sh | 231 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 229 insertions(+), 2 deletions(-)
diff --git a/scripts/fsadm.sh b/scripts/fsadm.sh
index 2895371..803c6a5 100755
--- a/scripts/fsadm.sh
+++ b/scripts/fsadm.sh
@@ -17,7 +17,8 @@
# Script for resizing devices (usable for LVM resize)
#
# Needed utilities:
-# mount, umount, grep, readlink, blockdev, blkid, fsck, xfs_check
+# mount, umount, grep, readlink, blockdev, blkid, fsck, xfs_check, bc, df
+# xfs_db
#
# ext2/ext3/ext4: resize2fs, tune2fs
# reiserfs: resize_reiserfs, reiserfstune
@@ -54,6 +55,8 @@ READLINK=readlink
READLINK_E="-e"
FSCK=fsck
XFS_CHECK=xfs_check
+BC=bc
+DF=df
# user may override lvm location by setting LVM_BINARY
LVM=${LVM_BINARY:-lvm}
@@ -74,6 +77,8 @@ MOUNTPOINT=
MOUNTED=
REMOUNT=
PROCMOUNTS="/proc/mounts"
+PROCDEVICES="/proc/devices"
+PROCPARTITIONS="/proc/partitions"
NULL="$DM_DEV_DIR/null"
MAX_VGS=999
@@ -202,7 +207,6 @@ detect_fs() {
FSTYPE=$("$BLKID" -c "$NULL" -s TYPE "$VOLUME") || error "Cannot get FSTYPE of \"$VOLUME\""
FSTYPE=${FSTYPE##*TYPE=\"} # cut quotation marks
FSTYPE=${FSTYPE%%\"*}
- verbose "\"$FSTYPE\" filesystem found on \"$VOLUME\""
}
# check if the given device is already mounted and where
@@ -413,6 +417,7 @@ generic_make_fs() {
resize() {
NEWSIZE=$2
detect_fs "$1"
+ verbose "\"$FSTYPE\" filesystem found on \"$VOLUME\""
is_natural $NEWSIZE
[ $? -ne 1 ] && error "$NEWSIZE is not valid number for file system size"
detect_device_size
@@ -565,6 +570,226 @@ destroy() {
dry $LVM lvremove $FORCE $device
}
+float_math() {
+ if [ $# -le 0 ]; then
+ return
+ fi
+ result=$(LANG=C echo "scale=2; $@" | $BC -q 2> /dev/null)
+ echo $result
+}
+
+#####################################
+# Convet the size into human readable
+# form. size in KiB expected
+#####################################
+humanize_size() {
+ size=$1
+ count=0
+ while [ ${size%%.*} -ge 1024 ] && [ $count -lt 7 ]; do
+ size=$(float_math $size/1024)
+ count=$(($count+1))
+ done
+ case $count in
+ 0) unit="KiB" ;;
+ 1) unit="MiB" ;;
+ 2) unit="GiB" ;;
+ 3) unit="TiB" ;;
+ 4) unit="PiB" ;;
+ 5) unit="EiB" ;;
+ 6) unit="ZiB" ;;
+ 7) unit="YiB" ;;
+ *) unit="???" ;;
+ esac
+ echo "$size $unit"
+}
+
+get_ext_size() {
+ IFS=$NL
+ for i in $(LANG=C $TUNE_EXT -l "$VOLUME"); do
+ case "$i" in
+ "Block size"*) bsize=${i##* } ;;
+ "Block count"*) bcount=${i##* } ;;
+ "Reserved block count"*) rbcount=${i##* } ;;
+ "Free blocks"*) fbcount=${i##* } ;;
+ esac
+ done
+
+ bsize=$(($bsize/1024))
+ total=$(($bcount*$bsize))
+ TOTAL=$(humanize_size $total)
+ used=$((($bcount-$fbcount)*$bsize))
+ USED=$(humanize_size $used)
+ free=$((($fbcount-$rbcount)*$bsize))
+ FREE=$(humanize_size $free)
+ IFS=$OLD_IFS
+}
+
+get_xfs_size() {
+ IFS=$NL
+ if [ -z $MOUNTED ]; then
+
+ for i in $(LANG=C xfs_db -c 'sb' -c 'print blocksize fdblocks dblocks logblocks agcount' $VOLUME); do
+ case "$i" in
+ "blocksize ="*) bsize=${i##* } ;;
+ "fdblocks ="*) fbcount=${i##* } ;;
+ "dblocks ="*) bcount=${i##* } ;;
+ "logblocks ="*) lbcount=${i##* } ;;
+ "agcount ="*) agcount=${i##* } ;;
+ esac
+ done
+ bsize=$(($bsize/1024))
+ bcount=$(($bcount-$lbcount))
+ fbcount=$(($fbcount-(4+(4*$agcount))))
+
+ total=$(($bcount*$bsize))
+ TOTAL=$(humanize_size $total)
+ used=$((($bcount-$fbcount)*$bsize))
+ USED=$(humanize_size $used)
+ free=$(($fbcount*$bsize))
+ FREE=$(humanize_size $free)
+ return
+ fi
+
+ line=$($DF -k $VOLUME | grep -e "$MOUNTED$" | sed -e 's/ */ /g')
+ line=${line#* }
+ total=$(echo $line | cut -d' ' -f1)
+ TOTAL=$(humanize_size $total)
+ free=$(echo $line | cut -d' ' -f3)
+ FREE=$(humanize_size $free)
+ used=$(echo $line | cut -d' ' -f2)
+ USED=$(humanize_size $used)
+ IFS=$OLD_IFS
+}
+
+detect_fs_size() {
+ case $FSTYPE in
+ ext[234]) get_ext_size ;;
+ xfs) get_xfs_size ;;
+ *) error "Filesystem $FSTYM is not supported by $TOOL"
+ esac
+}
+
+list_filesystems() {
+ IFS=$NL
+ format="%-20s%-8s%-13s%-13s%-13s%s\n"
+ header=$(printf $format "Volume" "Type" "Free" "Used" "Total" "Mount point")
+ separator=""
+ for i in $(seq ${#header}); do
+ separator+="-"
+ done
+ echo $separator
+ echo $header
+ echo $separator
+ IFS=$NL
+ c=0
+ for line in $($LVM lvs -o lv_path,lv_size --noheadings --separator ' ' --nosuffix --units k 2> /dev/null); do
+ line=$(echo $line | sed -e 's/^ *\//\//')
+ volume=$(echo $line | cut -d' ' -f1)
+ detect_fs $volume
+ detect_mounted
+ detect_fs_size
+ printf $format $volume $FSTYPE $FREE $USED $TOTAL $MOUNTED
+ c=$((c+1))
+ done
+ if [ $c -eq 0 ]; then
+ echo " No file systems suitable for managing by $TOOL found."
+ fi
+ echo $separator
+ IFS=$OLD_IFS
+}
+
+list_devices() {
+ IFS=$NL
+
+ format="%-13s%-13s%-13s%-13s%s\n"
+ header=$(printf $format "Device" "Free" "Used" "Total" "Group")
+ separator=""
+ for i in $(seq ${#header}); do
+ separator+="-"
+ done
+ echo $separator
+ echo $header
+ echo $separator
+ c=0
+ for line in $(LANG=C $LVM pvs -o pv_name,vg_name,pv_size,pv_free,pv_used --separator ' ' --noheadings --nosuffix --units k); do
+ line=$(echo $line | sed -e 's/^ *\//\//')
+ device=$(echo $line | cut -d' ' -f1)
+ group=$(echo $line | cut -d' ' -f2)
+ total=$(echo $line | cut -d' ' -f3)
+ total=$(humanize_size ${total%%.*})
+ free=$(echo $line | cut -d' ' -f4)
+ free=$(humanize_size ${free%%.*})
+ used=$(echo $line | cut -d' ' -f5)
+ used=$(humanize_size ${used%%.*})
+
+ printf $format $device $free $used $total $group
+ c=$((c+1))
+ done
+ if [ $c -eq 0 ]; then
+ echo " No devices found in the pool."
+ fi
+ echo $separator
+ IFS=$OLD_IFS
+}
+
+list_pool() {
+ IFS=$NL
+
+ format="%-10s%-9s%-13s%-13s%s\n"
+ header=$(printf $format "Group" "Devices" "Free" "Used" "Total")
+ separator=""
+ for i in $(seq ${#header}); do
+ separator+="-"
+ done
+ echo $separator
+ echo $header
+ echo $separator
+ c=0
+ for line in $(LANG=C $LVM vgs -o vg_name,pv_count,vg_size,vg_free --separator ' ' --noheadings --nosuffix --units k); do
+ line=$(echo $line | sed -e 's/^ *//')
+ group=$(echo $line | cut -d' ' -f1)
+ devices=$(echo $line | cut -d' ' -f2)
+ total=$(echo $line | cut -d' ' -f3)
+ free=$(echo $line | cut -d' ' -f4)
+
+ used=$((${total%%.*}-${free%%.*}))
+ used=$(humanize_size ${used%%.*})
+ total=$(humanize_size ${total%%.*})
+ free=$(humanize_size ${free%%.*})
+ printf $format $group $devices $total $free $used
+ c=$((c+1))
+ done
+ if [ $c -eq 0 ]; then
+ echo " Pool is empty."
+ fi
+ echo $separator
+ IFS=$OLD_IFS
+}
+
+#############################
+# List the available storage
+# and file systems
+#############################
+list() {
+ for i in $@; do
+ case $i in
+ "filesystems" | "fs") list_filesystems ;;
+ "devices" | "dev") list_devices ;;
+ "pool") list_pool ;;
+ *) error "Wrong option $i. (see: $TOOL --help)"
+ esac
+ done
+
+ if [ $# -eq 0 ]; then
+ list_devices
+ echo ""
+ list_pool
+ echo ""
+ list_filesystems
+ fi
+}
+
+
####################################
# Calclulate diff between two dates
# LANG=C input is expected the
@@ -579,6 +804,7 @@ diff_dates() {
###################
check() {
detect_fs "$1"
+ verbose "\"$FSTYPE\" filesystem found on \"$VOLUME\""
if detect_mounted ; then
verbose "Skipping filesystem check for device \"$VOLUME\" as the filesystem is mounted on $MOUNTED";
cleanup 3
@@ -660,6 +886,7 @@ do
"resize") COMMAND=$1; shift; ARGS=$@; break ;;
"create") COMMAND=$1; shift; ARGS=$@; break ;;
"destroy") COMMAND=$1; shift; ARGS=$@; break ;;
+ "list") COMMAND=$1; shift; ARGS=$@; break ;;
*) error "Wrong argument \"$1\". (see: $TOOL --help)"
esac
shift
--
1.7.4.4
_______________________________________________
linux-lvm mailing list
linux-lvm@redhat.com
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
