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| .Dd June 2, 2021 |
| .Dt ZPOOL-SPLIT 8 |
| .Os |
| . |
| .Sh NAME |
| .Nm zpool-split |
| .Nd split devices off ZFS storage pool, creating new pool |
| .Sh SYNOPSIS |
| .Nm zpool |
| .Cm split |
| .Op Fl gLlnP |
| .Oo Fl o Ar property Ns = Ns Ar value Oc Ns … |
| .Op Fl R Ar root |
| .Ar pool newpool |
| .Oo Ar device Oc Ns … |
| . |
| .Sh DESCRIPTION |
| Splits devices off |
| .Ar pool |
| creating |
| .Ar newpool . |
| All vdevs in |
| .Ar pool |
| must be mirrors and the pool must not be in the process of resilvering. |
| At the time of the split, |
| .Ar newpool |
| will be a replica of |
| .Ar pool . |
| By default, the |
| last device in each mirror is split from |
| .Ar pool |
| to create |
| .Ar newpool . |
| .Pp |
| The optional device specification causes the specified device(s) to be |
| included in the new |
| .Ar pool |
| and, should any devices remain unspecified, |
| the last device in each mirror is used as would be by default. |
| .Bl -tag -width Ds |
| .It Fl g |
| Display vdev GUIDs instead of the normal device names. |
| These GUIDs can be used in place of device names for the zpool |
| detach/offline/remove/replace commands. |
| .It Fl L |
| Display real paths for vdevs resolving all symbolic links. |
| This can be used to look up the current block device name regardless of the |
| .Pa /dev/disk/ |
| path used to open it. |
| .It Fl l |
| Indicates that this command will request encryption keys for all encrypted |
| datasets it attempts to mount as it is bringing the new pool online. |
| Note that if any datasets have |
| .Sy keylocation Ns = Ns Sy 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. |
| .It Fl n |
| Do a dry-run |
| .Pq Qq No-op |
| split: do not actually perform it. |
| Print out the expected configuration of |
| .Ar newpool . |
| .It Fl P |
| Display full paths for vdevs instead of only the last component of |
| the path. |
| This can be used in conjunction with the |
| .Fl L |
| flag. |
| .It Fl o Ar property Ns = Ns Ar value |
| Sets the specified property for |
| .Ar newpool . |
| See the |
| .Xr zpoolprops 7 |
| manual page for more information on the available pool properties. |
| .It Fl R Ar root |
| Set |
| .Sy altroot |
| for |
| .Ar newpool |
| to |
| .Ar root |
| and automatically import it. |
| .El |
| . |
| .Sh SEE ALSO |
| .Xr zpool-import 8 , |
| .Xr zpool-list 8 , |
| .Xr zpool-remove 8 |