On Tue, Jul 26, 2011 at 1:33 PM, Bernd W. Hennig
<consult...@hennig-consulting.com> wrote:
> G'Day,
>
> - zfs pool with 4 disks (from Clariion A)
> - must migrate to Clariion B (so I created 4 disks with the same size,
> avaiable for the zfs)
>
> The zfs pool has no mirrors, my idea was to add the new 4 disks from
> the Clariion B to the 4 disks which are still in the pool - and later
> remove the original 4 disks.
>
> I only found in all example how to create a new pool with mirrors
> but no example how to add to a pool without mirrors a mirror disk
> for each "disk" in the pool.
>
> - is it possible to add disks to each disk in the pool (they have different
> sizes, so I have exact add the correct disks form Clariion B to the
> original disk from Clariion B)
from "man zpool"
zpool attach [-f] pool device new_device
Attaches new_device to an existing zpool device. The
existing device cannot be part of a raidz configuration. If device is
not currently part
of a mirrored configuration, device automatically
transforms into a two-way mirror of device and new_device. If device
is part of a two-way
mirror, attaching new_device creates a three-way mirror,
and so on. In either case, new_device begins to resilver immediately.
-f Forces use of new_device, even if its appears to be
in use. Not all devices can be overridden in this manner.
> - can I later "remove" the disks from the Clariion A, pool is intact, user
> can work with the pool
zpool detach pool device
Detaches device from a mirror. The operation is refused if
there are no other valid replicas of the data.
If you're using raidz, you can't use zpool attach. Your best bet in
this case is zpool replace.
zpool replace [-f] pool old_device [new_device]
Replaces old_device with new_device. This is equivalent to
attaching new_device, waiting for it to resilver, and then detaching
old_device.
The size of new_device must be greater than or equal to the
minimum size of all the devices in a mirror or raidz configuration.
new_device is required if the pool is not redundant. If
new_device is not specified, it defaults to old_device. This form of
replacement is
useful after an existing disk has failed and has been
physically replaced. In this case, the new disk may have the same /dev
path as the old
device, even though it is actually a different disk. ZFS
recognizes this.
-f Forces use of new_device, even if its appears to be
in use. Not all devices can be overridden in this manner.
--
Fajar
_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
