Nedd help to extend /usr filesystem

[Vivek Shrivastava_1]

Hi,

I need to extend the size of /usr file system. Could you please help me with step to extend the size of /usr filesystem or verify the following steps?

#1
Boot into single user mode
#2
lvextend /dev/vg00/lvolx
#3
extendfs /dev/vg00/lvolx
#4
reboot the system

When I boot into single user mode, the only filesystem mounted is '/' ( I might be wrong), is it going to be any kind of problem?

Please do reply!

thanks

[Sanjay_6 · Accepted solution]

Hi,

Looks like you don't have onlineJFS on the server. If you do, you can extend the size of /usr online without a reboot.

If you don't have online jfs, you can proceed like this,

1.) boot into single user mode
hpux -is at the boot prompt after interrupting the boot process
2.) activate the root vg
vgchange -a y /dev/vg00
3.) extend /usr (should be lvol7)
lvextend -L new_size_in_mb /dev/vg00/lvol7
4.) extend the filesystem
extendfs /dev/vg00/lvol7
5.) mount /usr to verify
mount /usr
boot into multiuser mode,
6.) init 3

you do not have to reboot.

Hope this helps.

Regds

[Pete Randall]

There are a couple of ways to go about this. Your steps look correct to me and you're right, / will be the only FS mounted. I would go ahead and do a "mount -a", then "umount /usr" - that way you'll have access to everything you may need.

You could also use Ignite to do a "make_tape_recovery" and enlarge /usr or any other root volume group file systems during the restore process.

Finally, if you have extra room, you can make a new logical volume of the desired size, copy the contents of /usr into it, switch the mount points in /etc/fstab and reboot.


Pete

[Rick Garland]

One thing to check for - do have room in vg00?
If so then you can extend the filesystem. Check this by running the vgdisplay -v /dev/vg00 and looking at the 'FREE PE' value.

If the vg00 has no room left then you will need to clean up or ignite the system and reallocate the space in vg00. Check for anyyhing you can clean up 1st.

[Vivek Shrivastava_1]

Thanks to all,

Just want to answer quick questions.

#1
Yes, I don't have online JFS.

#2
Yes, I do have lots of space in vg00.


Just want to know one thing from Pete.

Why do I have to activate vg00 when I boot into single user mode? Isnâ t already activated since '/' is already mounted. Please feel free to correct me.

Thank