Maeve: Created page with "It is possible to '''sync one zpool's contents to another''' via ''zfs send'' and ''zfs recv.'' First, create a snapshot of the data you want to send. To copy an entire zpool, create a snapshot with the following command: zpool snapshot -r [zpool_to_snapshot]@[snapshot_name] You can also snapshot a specific subvol. zpool snapshot [zpool_to_snapshot/with_sub_vol]@[snapshot_name] We'll be sending the data from this snapshot over to another host using zfs send and zfs..."

2024-11-25T20:51:35Z

Created page with "It is possible to '''sync one zpool's contents to another''' via ''zfs send'' and ''zfs recv.'' First, create a snapshot of the data you want to send. To copy an entire zpool, create a snapshot with the following command: zpool snapshot -r [zpool_to_snapshot]@[snapshot_name] You can also snapshot a specific subvol. zpool snapshot [zpool_to_snapshot/with_sub_vol]@[snapshot_name] We'll be sending the data from this snapshot over to another host using zfs send and zfs..."

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It is possible to '''sync one zpool's contents to another''' via ''zfs send'' and ''zfs recv.''

First, create a snapshot of the data you want to send. To copy an entire zpool, create a snapshot with the following command:
zpool snapshot -r [zpool_to_snapshot]@[snapshot_name]
You can also snapshot a specific subvol.
zpool snapshot [zpool_to_snapshot/with_sub_vol]@[snapshot_name]
We'll be sending the data from this snapshot over to another host using zfs send and zfs recv. We'll want to run this command in a screen session in case our terminal disconnects. We pipe the output of zfs send into an ssh connection running zfs recv.

We run zfs send with -R to send all content under the specified snapshot. We run zfs recv with the flags -F (expand and replace) -d (discard target name and replace with source) -u (do not mount on destination). The pool must exist on the destination. Essentially, we're not cloning the ZFS configuration, we're funneling information on a higher level between them, in the same sense that one might SCP or rsync data. We recommend using zpool set autoexpand=on [pool_name]
zfs send -R [zpool_to_clone]@[snapshot_name] | ssh [destination_IP] zfs recv -Fdu [destination_pool]
This will take quite some time. It may take multiple days, depending on the size of your dataset.

ZFS Remote Sync - Revision history