Provided by: zfsutils-linux_2.2.2-0ubuntu9.1_amd64 
NAME
zpool-import — import ZFS storage pools or list available pools
SYNOPSIS
zpool import [-D] [-d dir|device]…
zpool import -a [-DflmN] [-F [-nTX]] [--rewind-to-checkpoint] [-c cachefile|-d dir|device] [-o mntopts] [-o
property=value]… [-R root]
zpool import [-Dflmt] [-F [-nTX]] [--rewind-to-checkpoint] [-c cachefile|-d dir|device] [-o mntopts] [-o
property=value]… [-R root] [-s] pool|id [newpool]
DESCRIPTION
zpool import [-D] [-d dir|device]…
Lists pools available to import. If the -d or -c options are not specified, this command searches
for devices using libblkid on Linux and geom on FreeBSD. The -d option can be specified multiple
times, and all directories are searched. If the device appears to be part of an exported pool,
this command displays a summary of the pool with the name of the pool, a numeric identifier, as
well as the vdev layout and current health of the device for each device or file. Destroyed pools,
pools that were previously destroyed with the zpool destroy command, are not listed unless the -D
option is specified.
The numeric identifier is unique, and can be used instead of the pool name when multiple exported
pools of the same name are available.
-c cachefile
Reads configuration from the given cachefile that was created with the cachefile pool
property. This cachefile is used instead of searching for devices.
-d dir|device
Uses device or searches for devices or files in dir. The -d option can be specified
multiple times.
-D Lists destroyed pools only.
zpool import -a [-DflmN] [-F [-nTX]] [-c cachefile|-d dir|device] [-o mntopts] [-o property=value]… [-R
root] [-s]
Imports all pools found in the search directories. Identical to the previous command, except that
all pools with a sufficient number of devices available are imported. Destroyed pools, pools that
were previously destroyed with the zpool destroy command, will not be imported unless the -D option
is specified.
-a Searches for and imports all pools found.
-c cachefile
Reads configuration from the given cachefile that was created with the cachefile pool
property. This cachefile is used instead of searching for devices.
-d dir|device
Uses device or searches for devices or files in dir. The -d option can be specified
multiple times. This option is incompatible with the -c option.
-D Imports destroyed pools only. The -f option is also required.
-f Forces import, even if the pool appears to be potentially active.
-F Recovery mode for a non-importable pool. Attempt to return the pool to an importable state
by discarding the last few transactions. Not all damaged pools can be recovered by using
this option. If successful, the data from the discarded transactions is irretrievably
lost. This option is ignored if the pool is importable or already imported.
-l Indicates that this command will request encryption keys for all encrypted datasets it
attempts to mount as it is bringing the pool online. Note that if any datasets have a
keylocation of prompt this command will block waiting for the keys to be entered. Without
this flag encrypted datasets will be left unavailable until the keys are loaded.
-m Allows a pool to import when there is a missing log device. Recent transactions can be
lost because the log device will be discarded.
-n Used with the -F recovery option. Determines whether a non-importable pool can be made
importable again, but does not actually perform the pool recovery. For more details about
pool recovery mode, see the -F option, above.
-N Import the pool without mounting any file systems.
-o mntopts
Comma-separated list of mount options to use when mounting datasets within the pool. See
zfs(8) for a description of dataset properties and mount options.
-o property=value
Sets the specified property on the imported pool. See the zpoolprops(7) manual page for
more information on the available pool properties.
-R root
Sets the cachefile property to none and the altroot property to root.
--rewind-to-checkpoint
Rewinds pool to the checkpointed state. Once the pool is imported with this flag there is
no way to undo the rewind. All changes and data that were written after the checkpoint are
lost! The only exception is when the readonly mounting option is enabled. In this case,
the checkpointed state of the pool is opened and an administrator can see how the pool
would look like if they were to fully rewind.
-s Scan using the default search path, the libblkid cache will not be consulted. A custom
search path may be specified by setting the ZPOOL_IMPORT_PATH environment variable.
-X Used with the -F recovery option. Determines whether extreme measures to find a valid txg
should take place. This allows the pool to be rolled back to a txg which is no longer
guaranteed to be consistent. Pools imported at an inconsistent txg may contain
uncorrectable checksum errors. For more details about pool recovery mode, see the -F
option, above. WARNING: This option can be extremely hazardous to the health of your pool
and should only be used as a last resort.
-T Specify the txg to use for rollback. Implies -FX. For more details about pool recovery
mode, see the -X option, above. WARNING: This option can be extremely hazardous to the
health of your pool and should only be used as a last resort.
zpool import [-Dflmt] [-F [-nTX]] [-c cachefile|-d dir|device] [-o mntopts] [-o property=value]… [-R root]
[-s] pool|id [newpool]
Imports a specific pool. A pool can be identified by its name or the numeric identifier. If
newpool is specified, the pool is imported using the name newpool. Otherwise, it is imported with
the same name as its exported name.
If a device is removed from a system without running zpool export first, the device appears as
potentially active. It cannot be determined if this was a failed export, or whether the device is
really in use from another host. To import a pool in this state, the -f option is required.
-c cachefile
Reads configuration from the given cachefile that was created with the cachefile pool
property. This cachefile is used instead of searching for devices.
-d dir|device
Uses device or searches for devices or files in dir. The -d option can be specified
multiple times. This option is incompatible with the -c option.
-D Imports destroyed pool. The -f option is also required.
-f Forces import, even if the pool appears to be potentially active.
-F Recovery mode for a non-importable pool. Attempt to return the pool to an importable state
by discarding the last few transactions. Not all damaged pools can be recovered by using
this option. If successful, the data from the discarded transactions is irretrievably
lost. This option is ignored if the pool is importable or already imported.
-l Indicates that this command will request encryption keys for all encrypted datasets it
attempts to mount as it is bringing the pool online. Note that if any datasets have a
keylocation of prompt this command will block waiting for the keys to be entered. Without
this flag encrypted datasets will be left unavailable until the keys are loaded.
-m Allows a pool to import when there is a missing log device. Recent transactions can be
lost because the log device will be discarded.
-n Used with the -F recovery option. Determines whether a non-importable pool can be made
importable again, but does not actually perform the pool recovery. For more details about
pool recovery mode, see the -F option, above.
-o mntopts
Comma-separated list of mount options to use when mounting datasets within the pool. See
zfs(8) for a description of dataset properties and mount options.
-o property=value
Sets the specified property on the imported pool. See the zpoolprops(7) manual page for
more information on the available pool properties.
-R root
Sets the cachefile property to none and the altroot property to root.
-s Scan using the default search path, the libblkid cache will not be consulted. A custom
search path may be specified by setting the ZPOOL_IMPORT_PATH environment variable.
-X Used with the -F recovery option. Determines whether extreme measures to find a valid txg
should take place. This allows the pool to be rolled back to a txg which is no longer
guaranteed to be consistent. Pools imported at an inconsistent txg may contain
uncorrectable checksum errors. For more details about pool recovery mode, see the -F
option, above. WARNING: This option can be extremely hazardous to the health of your pool
and should only be used as a last resort.
-T Specify the txg to use for rollback. Implies -FX. For more details about pool recovery
mode, see the -X option, above. WARNING: This option can be extremely hazardous to the
health of your pool and should only be used as a last resort.
-t Used with newpool. Specifies that newpool is temporary. Temporary pool names last until
export. Ensures that the original pool name will be used in all label updates and
therefore is retained upon export. Will also set -o cachefile=none when not explicitly
specified.
EXAMPLES
Example 9: Importing a ZFS Storage Pool
The following command displays available pools, and then imports the pool tank for use on the system. The
results from this command are similar to the following:
# zpool import
pool: tank
id: 15451357997522795478
state: ONLINE
action: The pool can be imported using its name or numeric identifier.
config:
tank ONLINE
mirror ONLINE
sda ONLINE
sdb ONLINE
# zpool import tank
SEE ALSO
zpool-export(8), zpool-list(8), zpool-status(8)