Create Logical volume

[Shehan]

Hi All

I am planning to create several lvol(lvol1, lvol2,lvol3) in my new volume group(VG05). Please guide me to create those logical volumes in CLI mode.

Thanks
Niru

[Torsten.]

Basic usage is here:

http://docs.hp.com/en/B2355-60105/lvcreate.1M.html

Do you want to mirror the LVOLs and if, how many disks are in that VG?

[Hasan Atasoy]

hi niru ;

the basic create command is

lvcreate -n lvname1 -L sizeinMB vg05


without striping or mirrorring.


Hasan

[Doug O'Leary]

Hey;

Basic usage information can be found at http://www.olearycomputers.com/ll/hplvcreate.html

The way I normally do this is to create a data file:

#VG LV SIZE MP
######################
vg05 lvol1 2048 /oracle
vg05 lvol2 1024 /oracle/fs1
vg05 lvol3 512 /oracle/fs2
vg05 lvol4 8196 /oracle/fs3
vg05 lvol5 8196 /oracle/fs4

Then, you read through the data file:

grep -v ^# ${file | while read vg lv size
do
echo lvcreate -L ${size} -n ${lv} ${vg}
[[ ${size} -gt 2048 ]] && args="-o largefiles" || args=""
echo newfs -F vxfs ${args} /dev/${vg}/r${lv}
[[ ! -d ${mp} ]] && mkdir -p -m 755 ${mp}
[[ ${size} -gt 2048 ]] && args=",largefiles" || args=""
echo "${lv} ${mp} vxfs delaylog${args} 0 2" >> /etc/fstab
echo mount ${mp}
done

If that looks right, remove the echos.

Doug O'Leary

[Torsten.]

Nice script Doug, but for somebody who asked how to use lvcreate this script may be overkill
;-)
Or not?

[Doug O'Leary]

lol! Probably. I refer you to my personal quote:

"A good script will make an admin's day... A bad one will ruin it."

Doug

[Torsten.]

totally agree with you :-)