topic lvcreate script in Operating System - HP-UX

lvcreate script

Donald C Nelson — Thu, 27 Jan 2005 11:35:03 GMT

Does anyone have a script that can recreate logical volumes from a bdf output or vgdisplay output. I will be particpating in a DR excercise and trying to expedite the lvcreate process

Re: lvcreate script

Sanjay_6 — Thu, 27 Jan 2005 11:49:06 GMT

Hi Donald,

Have not tried this, but try the script attched by Nick,

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=11150

Also get many more scripts for other purposes over here,

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=178514

Hope this helps.

Regds

Re: lvcreate script

Steven E. Protter — Thu, 27 Jan 2005 12:07:28 GMT

I love the idea of running lvcreate from bdf output to recreate logical volumes.

Overall concept though.

When I'm doing a DR excercise it involves getting a make_tape_recovery tape from secure off site storage, sticking it in a server tape drive and booting the system off the tape.

That lets be get the entire server setup running correctly in a few hours. Oracle apps, legacy apps, the whole nine yards.

SEP

Re: lvcreate script

A. Clay Stephenson — Thu, 27 Jan 2005 12:10:45 GMT

Bdf alone will not do the job. It knows nothing about swap and raw volumes.

Re: lvcreate script

Sundar_7 — Thu, 27 Jan 2005 13:19:15 GMT

I can suggest a quick and dirty script - take it from there :-)

# vgdisplay 2>/dev/null | grep "VG Name" | awk '{print $3}' | xargs -n1 | while read VG
do
VGNAME=$(echo "$VG" | sed 's/\/dev\///')
vgdisplay -v $VG | egrep "LV Name|Current LE" > /root/$VGNAME-LV.list
done

Now once you are done restoring the ignite in the DR server

# for VGS in $(ls /root/*LV.list)
do
cat VGS | xargs -n2 | while read LV SIZE
do
VGNAME=$(echo "$VGS" | sed 's/\-LV\.list//')
LVNAME=$(echo "$LV" | sed 's/\/dev\/vg.*\///')
lvcreate -l $SIZE -n $LVNAME /dev/$VGNAME
done
done

Remember, the above excerpt will not take care of striping or extend allocation policies or mirroring. But one would assume that is not critical for the DR tests.

I am not sure the above script is not going to work either :-).

Re: lvcreate script

Donald C Nelson — Thu, 27 Jan 2005 16:28:52 GMT

Sunar's scripts with a some modifications gave me exactly what I was looking for.