Need help with extending volume. Suse10.

Spuddy · 03-23-2011, 12:31 PM

Hello,

I have taken over looking after a EMC/Suse iscsi storage network.

We recently run out of space on our virtual disk, so I added another 100GB from our storage pool using the EMC management software and the virtual disk the suse box is using expanded from 1.5TB to 1.6TB. That completed fine.

However the SuSe host is still showing 1.5TB. Do I need to extend the volume somehow? Or is it just a case of restarting the suse box. I have umounted and re-mounted but no change. It is imperitive the current data on there REMAINS INTACT!

I'm a relative newb. Some help would be great.

Code:

SuseServer:~ # df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda2             277G  2.1G  275G   1% /
udev                  2.0G  128K  2.0G   1% /dev
/dev/sdc1             1.1T  692G  392G  64% /mnt/san1/vd003-videdit
/dev/sdb1             1.5T  1.4T  9.3G 100% /mnt/san1/vd002-studio

SL00b · 03-23-2011, 01:17 PM

The storage pool may be larger, but the filesystem hasn't been extended, and that extra 100GB hasn't been formatted.

I know there are other ways to do it, but in the interest of data integrity, here's how I usually accomplish this sort of thing.

1) Create a new virtual disk.
2) Partition and format the new disk
3) Mount it at a temporary mount point.
4) Copy all the files from the old filesystem to the new one.
5) Modify the mount tables so the new disk gets mounted where the old one was.
6) Reboot.

The relevant question here is, do you have enough space in your SAN for another, temporary 1.6TB disk?

Spuddy · 03-23-2011, 01:21 PM

Quote:

Originally Posted by SL00b

The relevant question here is, do you have enough space in your SAN for another, temporary 1.6TB disk?

Hi SL00b thanks for your response.

That would be a no unfortunately to the spare space on the SAN. Is there no way to safely extend the volume?

Thanks

SL00b · 03-23-2011, 02:01 PM

It can be done, but it's pretty dicey, so make sure you've taken a good backup first. In fact, it might even be worth your while to just wipe out the partition, resize, and restore from backup. But if you really want to just resize it: http://www.howtoforge.com/linux_resi...xt3_partitions

Basically, you're going to delete the existing partition, resize the filesystem, and re-create the partition with the same starting cylinder and a new ending cylinder boundary.