UNIX for Dummies Questions & Answers

I have a Sun box running Solaris 9.

My root disk was slices too small when it was installed and I am now at 99% capacity for my root partition.

Is it possible, and if so how?, to increase the size of slice 0 and decrease the size of slice 7??

Thanks!


Current partition table (original):
Total disk cylinders available: 24620 + 2 (reserved cylinders)

Part Tag Flag Cylinders Size Blocks
0 root wm 0 - 1440 1.99GB (1441/0/0) 4163049
1 unassigned wm 0 0 (0/0/0) 0
2 backup wm 0 - 24619 33.92GB (24620/0/0) 71127180
3 unassigned wm 0 0 (0/0/0) 0
4 unassigned wm 0 0 (0/0/0) 0
5 unassigned wm 0 0 (0/0/0) 0
6 unassigned wm 0 0 (0/0/0) 0
7 home wm 1441 - 24618 31.93GB (23178/0/0) 66961242

Hi FredSmith,

Looks like you're onto plums unless you can drop the size of that partition #7 (home).

All the space on this disk is already allocated. You would need to either add another disk, or backup everything on partition 7, shrink the partition (see format command) ensuring that you shrink from the 1441 cylinder mark upwards, rather than from the end of the disk downwards, then create a new filesystem (see newfs command) on the new smaller partition. You can then grow your existing root partition (man growfs command).

Hope this helps,

Craig

I can drop the size of partition #7, it's empty. Woudl that allow me to increase root? (Without losing data in root?)

Thanks!

Alternatively use a filesystem in partition #7 and move a number of directories from / into that filesystem.

What root directories do you still have on the root filesystem?

if you have a 2nd disk you can use liveupgrade (man lu) to build a new disk (online) with the needed setup. afterwards you only need a downtime to reboot the machine with the new disk.

What can I *safely* move from / to another filesystem in slice #7?

Can /var be moved?

An excellent candidate to move off the root file system.

In theory you should want the root file system to be

(a) minimalist

(b) able to be mounted read/only