zfs discuss - Dec 2008 - zpol mirror creation after non-mirrored zpool is setup

I have installed Solaris 10 on a ZFS filesystem that is not mirrored. Since I
have an identical disk in the machine, I''d like to add that disk to the
existing pool as a mirror. Can this be done, and if so, how do I do it?

Thanks
-- 
This message posted from opensolaris.org

On Sat, Dec 13, 2008 at 04:44:10PM -0800, Mark Dornfeld
wrote:
> I have installed Solaris 10 on a ZFS filesystem that is not mirrored. Since
I have an identical disk in the machine, I''d like to add that disk to
the existing pool as a mirror. Can this be done, and if so, how do I do it?
Yes:

# zpool attach <poolname> <old_disk> <new_disk>

Jeff

Jeff Bonwick wrote:
> On Sat, Dec 13, 2008 at 04:44:10PM -0800, Mark Dornfeld wrote:
>> I have installed Solaris 10 on a ZFS filesystem that is not mirrored.
Since I have an identical disk in the machine, I''d like to add that
disk to the existing pool as a mirror. Can this be done, and if so, how do I do
it?
> 
> Yes:
> 
> # zpool attach <poolname> <old_disk> <new_disk>
> 
And if you want to be able to boot off of the newly attached
replica you might want to install a boot block on it.

See http://docs.sun.com/app/docs/doc/816-5166/installboot-1m

# installboot -F zfs /usr/platform/`uname -i`/lib/fs/zfs/bootblk \
       <raw device of the replica>

Thanks everyone for your answers.

I am ashamed to say that I have become lax in reading documentation  
due to the high quality of the forums. Of course, my question was  
easily answered both by reading docs and quick responses.

I rarely see anyone telling a questioner to RTFM anymore since the  
forums are such an efficient format. I guess the new directive should  
be RTFF.


On 14-Dec-08, at 2:09 PM, Bob Netherton wrote:
>
>
> Jeff Bonwick wrote:
>> On Sat, Dec 13, 2008 at 04:44:10PM -0800, Mark Dornfeld wrote:
>>> I have installed Solaris 10 on a ZFS filesystem that is not  
>>> mirrored. Since I have an identical disk in the machine,
I''d like
>>> to add that disk to the existing pool as a mirror. Can this be  
>>> done, and if so, how do I do it?
>> Yes:
>> # zpool attach <poolname> <old_disk> <new_disk>
> And if you want to be able to boot off of the newly attached
> replica you might want to install a boot block on it.
>
> See http://docs.sun.com/app/docs/doc/816-5166/installboot-1m
>
> # installboot -F zfs /usr/platform/`uname -i`/lib/fs/zfs/bootblk \
>      <raw device of the replica>
Mark T. Dornfeld, Cyantic Systems Corporation
203-2800 Skymark Avenue
Mississauga, Ontario, L4W 5A6 CANADA
Cell: (416) 616-6682 Main: (416) 621-6161  Fax: (416) 622-4130
Email: mark at cyantic.com

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