Solved: How to grow or extend ZFS filesystem in Solaris 10

Below are the steps to grow a zfs filesystem

• Identify the zpool of the zfs filesystem.

df -h | grep -i sagufs
df -Z | grep -i sagufs

Above command will give you the complete path of the filesystem and zpool name even if it's in zone.

• Check that  the pool doesn't have any errors.

root# zpool status sagu-zpool
 pool: sagu-zpool
 state: ONLINE
 scan: none requested
config:

NAME STATE READ WRITE CKSUM
 sagu-zpool ONLINE 0 0 0
 c0t911602657A702A0004D339BDCF15E111d0 ONLINE 0 0 0
 c0t911602657A702A00BE158E94CF15E111d0 ONLINE 0 0 0
 c0t911602657A702A004CD071A9CF15E111d0 ONLINE 0 0 0

errors: No known data errors

• Check the current size of the pool

root# zpool list sagu-zpool
NAME SIZE ALLOC FREE CAP HEALTH ALTROOT
sagu-zpool 249G 178G 71.1G 71% ONLINE -

• Label the new LUN.

root# format c0t9007538111C02A004E73B39A155BE211d0

• Add the LUN to appropriate zpool. Be careful about pool name.

root# zpool add sagu-zpool c0t9007538111C02A004E73B39A155BE211d0

• Now let's say we want to increase the filesystem from 100GB to 155GB. To increase FS first increase its quota.

root# zfs set quota=155G sagu-zpool/sagufs

• Finally increase the FS reservation

root# zfs set reservation=155G sagu-zpool/sagufs

• Now you should be able to see the increased space.