topic Increasing file system under root VG in Operating System - HP-UX

Increasing file system under root VG

Eduardo Gaxiola_1 — Tue, 26 Oct 1999 13:54:16 GMT

Hi Everybody!!!!

I'm running HP-UX 10.20 on an HP9000 Box, and i'm trying to install Ignite UX
but i can't because the /opt file system doesn't have enough space.

/dev/vg00/lvol1 /
/dev/vg00/lvol3 /home
/dev/vg00/lvol4 /opt 86% full
/dev/vg00/lvol5 /tmp
/dev/vg00/lvol6 /usr
/dev/vg00/lvol7 /var

It has a 704 swap space area and the total disk space is 2 GB, is mirrored w/o
striping.
There's nothing i can remove but the VG has 178 PE Free (89 because of the
mirror).

My question is, are there special considerations for extending FS under the
root VG?
Can i treat them as any other FS?

Thanks!!!!

Re: Increasing file system under root VG

Tim Webster_1 — Wed, 27 Oct 1999 05:13:36 GMT

Hi Eduardo,

Extending /opt should not be a problem for you since you have free space in the
vg right now, and /opt is its own filesystem. Simply umount /opt and do an
lvextend to extend it to the new size and then run an extendfs on the raw lvol
device. You should be able to re-mount it then and bdf will reflect the new
amount of space.

Re: Increasing file system under root VG

Saleem Chaudhary — Thu, 28 Oct 1999 19:59:39 GMT

You can even extend the logical volume while the file system is still mounted.
Once this is succesfull, unmount the file system, extendfs and mount it back.

Re: Increasing file system under root VG

Jason Luginbuhl_1 — Wed, 03 Nov 1999 09:09:09 GMT

Sometimes extending the filesystems in vg00 are difficult because they do not
like to umount and report "Device busy". If this occurs you can try the
following:
1) lvextend the lvol
2) umount returns "Device busy" error
3) fuser -cu /xxx ###relace xxx with opt, var, usr..
This will show you what is currently accessing the filesystem.
4) cd /
5) fuser -cuk /xxx ###again replace xxx
This will kill all processes using the /xxx filesystem.
6) umount /xxx
If it works, then use extendfs and remount and you're done. If still
unsucessful, then this filesystem will not unmount in multi-user mode. You will
then need to go to single-user mode to get the filesystem unmounted and
extended. This is typical with most vg00 filesytems.