How to Expand a File System

Steps

1. Check Prerequisites for Creating Solaris Volume Manager Components.

2. Use the growfs command to grow a UFS on a logical volume.

   # growfs -M /mount-point /dev/md/rdsk/volumename

   See the following example and the growfs(1M) man page for more information.

Example 22–5 Expanding a File System

# df -k
Filesystem            kbytes    used   avail capacity  Mounted on
...
/dev/md/dsk/d10        69047   65426       0   100%    /home2
...
# growfs -M /home2 /dev/md/rdsk/d10
/dev/md/rdsk/d10:       295200 sectors in 240 cylinders of 15 tracks, 82 sectors
        144.1MB in 15 cyl groups (16 c/g, 9.61MB/g, 4608 i/g)
super-block backups (for fsck -F ufs -o b=#) at:
 32, 19808, 39584, 59360, 79136, 98912, 118688, 138464, 158240, 178016, 197792,
 217568, 237344, 257120, 276896,
# df -k
Filesystem            kbytes    used   avail capacity  Mounted on
...
/dev/md/dsk/d10       138703   65426   59407    53%    /home2
...

In this example, a new slice was added to a volume, d10, which contains the mounted file system /home2. The growfs command specifies the mount point with the -M option to be /home2, which is expanded onto the raw volume /dev/md/rdsk/d10. The file system will span the entire volume when the growfs command is complete. You can use the df -hk command before and after to verify the total disk capacity.

For mirror and transactional volumes, always run the growfs command on the top-level volume, not a submirror or master device, even though space is added to the submirror or master device.