how do I add a new disk to ZFS and make it available existing mountpoints if the current pool is root pool?
Attach the second disk as a mirror of the first, wait for resilver, remove the first disk, set the properties to autoexpand. Don't forget to setup boot code or anything like that. Example:
zpool attach rpool olddisk newdisk
...wait, check using zpool status rpool
zpool detach rpool olddisk
zpool set autoexpand=on rpool
You cannot "expand" the rpool size by appending one disk to another (raid 0), as previously mentioned, however as Chris S mentioned below, you could attach a larger disk as a mirror, then, once the data is sync'd (resliver complete), detach the smaller disk. (oops now I see Chris's response too)
Here is a process to mirror the root disk... http://constantin.glez.de/blog/2011/03/how-set-zfs-root-pool-mirror-oracle-solaris-11-express
Follow that except that where they do:
prtvtoc /dev/rdsk/c7t0d0s0 | fmthard -s - /dev/rdsk/c7t1d0s0
... you will want to run format and make the size of slice 0 larger, probably the whole disk
# format /dev/rdsk/c4t1d0s0
(I will not go into great detail on the interactive format command)
# zpool attach rpool c4t0d0s0 c4t1d0s0
# zpool status rpool
WAIT UNTIL IT SAYS "resilver completed" (keep checking zpool status rpool)
MAKE SURE YOU CAN BOOT TO THE SECOND DISK
Then detach the smaller rpool mirror and reboot, make sure you can boot again.
# zpool detach rpool c4t0d0s0
PROFIT!?
REFERENCE: http://docs.oracle.com/cd/E19963-01/html/821-1448/gjtuk.html#gjtui
Previous Answer:
After creating the pool using the command he specified:
zpool create mypool c4t1d0
Create a filesystem, for example:
zfs create mypool/home
... copy the data to the new disk ... (re)move the data from rpool disk, then set the mountpoint to a proper location, such as:
zfs set mountpoint=/export/home mypool/home
That is, of course, assuming that /export/home is where all the space is being used. You may have to do this in "single user" mode, or create a user with a home directory that is not in /export/home to complete this.
On a side note, your zfs list output looks funky, like it is missing something. rpool/ROOT is showing 101GB used, but the filesystems under it are only showing about 12.5GB REF, and far less USED. Do you by chance have other boot environments under rpool/ROOT that you "trimmed out" of your zfs list output? could you maybe destroy those bootenv's or at least the zfs filesystems to regain the space used in rpool/ROOT?
~tommy
Yes, I believe your only option is to create a new pool using the second disk. The only thing you can do with the rpool is mirror the disk - which won't make more space available. The rpool doesn't support striping, due to the difficulties it would pose with booting.
zpool create mypool c4t1d0