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Improve a bit sh syntax and fix it for multiple swap devices

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This commit is contained in:
Renato Botelho 2015-01-27 10:59:46 -02:00
parent f76cbd6ffe
commit db4b45768d
1 changed files with 40 additions and 31 deletions
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71
usr/local/sbin/ufslabels.sh
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@ -12,7 +12,7 @@
string_length() {
unset LEN
LEN=`echo -n ${1} | /usr/bin/wc -m | awk '{print $1}'`
LEN=$(echo -n "${1}" | /usr/bin/wc -m)
}
get_ufsid() {
@ -21,63 +21,72 @@ get_ufsid() {
# 51928c99a471c440
unset UFSID
local _dev="${1}"
ID_PARTS=`/sbin/dumpfs /dev/${1} | /usr/bin/head -n 2 | /usr/bin/tail -n 1 | /usr/bin/cut -f2 -d'[' | /usr/bin/cut -f1 -d ']'`
if [ -z "${_dev}" ]; then
return
fi
ID_PARTS=$(/sbin/dumpfs /dev/${_dev} | \
/usr/bin/head -n 2 | \
/usr/bin/tail -n 1 | \
/usr/bin/cut -f2 -d'[' | \
/usr/bin/cut -f1 -d ']')
# " 51110eb0 f288b35d " (note it has more spaces than we need/want)
ID_PART1=`echo ${ID_PARTS} | awk '{print $1;}'`
ID_PART1=$(echo ${ID_PARTS} | awk '{print $1}')
# "51110eb0"
ID_PART2=`echo ${ID_PARTS} | awk '{print $2;}'`
ID_PART2=$(echo ${ID_PARTS} | awk '{print $2}')
# "f288b35d"
if [ "${ID_PART1}" = "" ] || [ "${ID_PART2}" = "" ]; then
if [ -z "${ID_PART1}" -o -z "${ID_PART2}" ]; then
echo "Invalid ufsid on ${1} (${ID_PARTS}), cannot continue"
exit.
exit -1
fi
# Safety check to avoid http://www.freebsd.org/cgi/query-pr.cgi?pr=156908
string_length ${ID_PART1}
string_length "${ID_PART1}"
if [ ${LEN} -ne 8 ]; then
ID_PART1=`printf "%08s" "${ID_PART1}"`
ID_PART1=$(printf "%08s" "${ID_PART1}")
fi
string_length ${ID_PART2}
string_length "${ID_PART2}"
if [ ${LEN} -ne 8 ]; then
ID_PART2=`printf "%08s" "${ID_PART2}"`
ID_PART2=$(printf "%08s" "${ID_PART2}")
fi
UFSID=${ID_PART1}${ID_PART2}
UFSID="${ID_PART1}${ID_PART2}"
}
find_fs_device(){
find_fs_device() {
unset DEV
DEV=`/usr/bin/grep -e "[[:blank:]]*${1}[[:blank:]]" ${FSTAB} | awk '{print $1;}'`
DEV=$(/usr/bin/grep -e "[[:blank:]]*${1}[[:blank:]]" ${FSTAB} | awk '{print $1}')
DEV=${DEV##/dev/}
}
FSTAB=/etc/fstab
NEED_CHANGES=false
unset NEED_CHANGES
cp ${FSTAB} ${FSTAB}.tmp
ALL_FILESYSTEMS=`/bin/cat /etc/fstab | /usr/bin/awk '/ufs/ && !(/dev\/mirror\// || /dev\/ufsid\// || /dev\/label\// || /dev\/geom\//) {print $2;}'`
ALL_FILESYSTEMS=$(/usr/bin/awk '/ufs/ && !(/dev\/mirror\// || /dev\/ufsid\// || /dev\/label\// || /dev\/geom\//) {print $2}' /etc/fstab)
for FS in ${ALL_FILESYSTEMS}
do
find_fs_device ${FS}
find_fs_device "${FS}"
if [ "${DEV}" != "" ]; then
get_ufsid ${DEV}
string_length ${UFSID}
string_length "${UFSID}"
if [ ${LEN} -ne 16 ]; then
echo "Invalid UFS ID for FS ${FS} ($UFSID), skipping"
else
/usr/bin/sed -i '' -e "s/${DEV}/ufsid\/${UFSID}/g" ${FSTAB}.tmp
NEED_CHANGES=true
NEED_CHANGES=1
fi
else
echo "Unable to find device for ${FS}"
return -1
exit -1
fi
echo "FS: ${FS} on device ${DEV} with ufsid ${UFSID}"
done
ALL_SWAPFS=`/bin/cat /etc/fstab | /usr/bin/awk '/swap/ && !(/dev\/mirror\// || /dev\/ufsid\// || /dev\/label\// || /dev\/geom\//) {print $1;}'`
ALL_SWAPFS=$(/usr/bin/awk '/swap/ && !(/dev\/mirror\// || /dev\/ufsid\// || /dev\/label\// || /dev\/geom\//) {print $1}' /etc/fstab)
SWAPNUM=0
for SFS in ${ALL_SWAPFS}
do
@ -87,15 +96,15 @@ do
echo "FS: Swap slice ${SWAPNUM} on device ${SWAPDEV}"
if [ "${SWAPDEV}" != "" ]; then
/usr/bin/sed -i '' -e "s/${SWAPDEV}/label\/swap${SWAPNUM}/g" ${FSTAB}.tmp
NEED_CHANGES=true
NEED_CHANGES=1
fi
SWAPNUM=`expr ${SWAPNUM} + 1`
SWAPNUM=$((SWAPNUM+1))
fi
done
if [ "${NEED_CHANGES}" = "false" ]; then
if [ -z "${NEED_CHANGES}" ]; then
echo Nothing to do, all filesystems and swap already use some form of device-independent labels
exit
exit 0
fi
echo "===================="
@ -113,21 +122,21 @@ else
fi
# Commit changes
if [ "${COMMIT}" = "y" ] || [ "${COMMIT}" = "Y" ]; then
echo "Disabling swap to apply label"
/sbin/swapoff /dev/${SWAPDEV}
if [ "${COMMIT}" = "y" -o "${COMMIT}" = "Y" ]; then
echo "Applying label to swap parition"
echo "Applying label to swap partition"
SWAPNUM=0
for SFS in ${ALL_SWAPFS}
do
find_fs_device ${SFS}
find_fs_device "${SFS}"
if [ "${DEV}" != "" ]; then
SWAPDEV=${DEV}
if [ "${SWAPDEV}" != "" ]; then
if [ -n "${SWAPDEV}" ]; then
echo "Disabling swap ${SWAPDEV} to apply label"
/sbin/swapoff /dev/${SWAPDEV}
/sbin/glabel label swap${SWAPNUM} /dev/${SWAPDEV}
fi
SWAPNUM=`expr ${SWAPNUM} + 1`
SWAPNUM=$((SWAPNUM+1))
fi
done