zpool-attach —
Attach a new device to an existing ZFS virtual device
(vdev).
zpool |
attach [-fsw]
[-o
property=value]
pool device new_device |
zpool attach
[-fsw] [-o
property=value]
pool device new_device- Attaches new_device to the existing
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 and any
running scrub is cancelled.
-f- Forces use of new_device, even if it appears to
be in use. Not all devices can be overridden in this manner.
-o
property=value- Sets the given pool properties. See the
zpoolprops(8) manual page for a list of valid
properties that can be set. The only property supported at the moment
is ashift.
-s- The new_device is reconstructed sequentially to
restore redundancy as quickly as possible. Checksums are not verfied
during sequential reconstruction so a scrub is started when the
resilver completes. Sequential reconstruction is not supported for
raidz configurations.
-w- Waits until new_device has finished resilvering
before returning.