Script for unmounting all filesystem and deactivating VGs over ssh

[Anshif]

Hi,
Do anyone have a script alreay using on HPUX for ssh into a group of servers and unmounting all filesystems and deactivating the VGs?
I want to unmount all filesystems and deactivtae VGS excpet VG00.
Can anyone help me on this. I am not good at scripting so all your help will be a great help

Thanks

[Dennis Handly]

Any particular problem you are trying to solve?
You can't unmount ALL filesystems without rebooting.

[Johnson Punniyalingam]

seems to be you have duplicate thread.

http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1409419

[Anshif]

Whenever we need to perform any SAN activities where we have to unmount all filesystems and deactivate VGS, i am wondering if i have a script which can just trigger from one box and then it will ssh into each server and unmount all filesystems which mounted from SAN. and then deactivate particular VGs.

[James R. Ferguson]

Hi:

> Whenever we need to perform any SAN activities where we have to unmount all filesystems and deactivate VGS,

You could write something yourself. Read the lines of a list of filesystem names and volume groups. Knowing the filesystem names you would probably have to kill any processes using them ('fuser -k'); then unmount the filesystem; and finally use 'vgchange -a n' to deactivate the volume group.

The "guts" of your script might look something like:

#!/usr/bin/sh
MYFILESYS=/var/tmp/myfilesys
MYVGS=/var/tmp/myvgs
cat <<- EOF
filesys1
filesys2
filesys3
filesysX
filesysY
EOF > ${MYFILESYS}

cat <<- EOF
vg01
vg02
vg03
EOF > ${MYVGS}

while read FS
do
kill -k ${FS}
umount ${FS}
done < ${MYFILESYS}
while read VG
do
vgchange -a n ${VG}
done < ${MYVGS}
exit 0

Regards!

...JRF...

[James R. Ferguson]

Hi:

Here's a more viable script that drives its actions from the '/etc/fstab' of each server:

# cat ./sanmaint
#!/usr/bin/sh
MYVGS=/var/tmp/myvgs
while read DEV MNTPT X
do
VG=$( echo ${DEV} | awk '/^\/dev\// {split($1,a,"/");print a[3]}' )
if [ ! -z "${VG}" -a "${VG}" != "vg00" ]; then
echo fuser -k ${MNTPT} #...remove 'echo' to activate
echo ${VG} > ${MYVGS}
fi
done < /etc/fstab
sort -u ${MYVGS} | while read VG
do
echo vgchange -a n ${VG} #...remove 'echo' to activate
done
rm ${MYVGS}
exit 0

Regards!

...JRF...