KfWiki: ZFS

ZFS

ZFS has many interesting features. The following works on Solaris.

Memory requirements

http://docs.freebsd.org/cgi/getmsg.cgi?fetch=8167+0+current/freebsd-fs

vm.kmem_size="1024M"
vm.kmem_size_max="1024M"

Other ports of ZFS

FreeBSD http://wiki.freebsd.org/ZFSQuickStartGuide
Fuse http://www.wizy.org/wiki/ZFS_on_FUSE

Getting the partition/drive names

First off, use iostat to list all the partition names

bash-3.00# iostat -En

Create a new raid-1 pool

bash-3.00# zpool create -f zvol1 mirror c1t1d0 c1t3d0
bash-3.00# zpool status
  pool: zvol1
 state: ONLINE
 scrub: none requested
config:

		NAME        STATE     READ WRITE CKSUM
		zvol1       ONLINE       0     0     0
		  mirror    ONLINE       0     0     0
			c1t1d0  ONLINE       0     0     0
			c1t3d0  ONLINE       0     0     0

bash-3.00# zpool list
NAME                    SIZE    USED   AVAIL    CAP  HEALTH     ALTROOT
zvol1                    68G     89K   68.0G     0%  ONLINE     -

Create filesystem

As soon as the mirror is created, one can start using the filesystem at for example /zvol1. If you need create "sub-directories" or mount points inside that mount point, use the zfs command:

zfs create zvol1/u01
zfs set quota=30GB zvol1/u01
zfs create zvol1/u02

Extending mirror

Suppose you want to extend the mirror volume and you have the new bigger drives (c3txd0) ready.

# zpool replace zvol1 c1t1d0 c3t1d0 
# zpool replace zvol1 c1t3d0 c3t3do

Fixing failed mirror

Replace the faulty drive then

# zpool replace zvol1 c1t3d0

Changing mount point

zfs set mountpoint=none zvol1
zfs set mountpoint=/u01 zvol1/u01
zfs list

File permission

Grant full access to multiple users

chmod -R A+user:usera:rwxpd:fd:allow /export/home/share
chmod -R A+user:userb:rwxpd:fd:allow /export/home/share
chmod -R A+user:userc:rwxpd:fd:allow /export/home/share

KfWiki : ZFS

ZFS