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--- zfs_snapshot_send_receive [2017/08/27 14:04]
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+++ zfs_snapshot_send_receive [2020/02/13 22:55]
@@ Line 1: / Line 1: @@
-====== ZFS Snapshot Send/Receive ======
-Local ZFS snapshots are uploaded to a remote server (backup) over SSH, using the utility znapzend to manage the snapshot schedule.
-http://www.znapzend.org/
-<note>The ZFS volume of the given name must exist on the remote node
-<code>*** WARNING: destination 'root@destserver:data/test' does not exist, will be ignored! ***</code></note>
-. znapzend is installed as a deb package (systemd service) using: https://github.com/Gregy/znapzend-debian
-. Create a shared key for SSH to allow password-less login from source to dest server as the receiver backupuser
-<note>
-Do not specify a password on the shared key, just press enter when prompted.
-</note>
-<code>
-ssh-keygen
-ssh-copy-id -i /root/.ssh/id_rsa.pub backup@desterver
-</code>
-. Create the remote ZFS volume to receive the snapshots and delegate permissions to a non-root user.
-<code>
-# zfs create data/test
-# zfs allow -u backupuser create,receive,rename,mount,send data/test
-# zfs allow data/test
----- Permissions on data/test ----------------------------------------
-Local+Descendent permissions:
-        user backupuser create,mount,receive,rename,send
-</code>
-. Create a snapshot schedule consisting of a local SRC schedule, and the remote DST schedule to send the snapshots.
-<note>
-Keep snapshots for 1week, with a snapshot every 30 minutes
-<code>
-# znapzendzetup create --recursive SRC '1week=>30min' data/test DST '1week=>30min' backupuser@destserver:data/test
-</code>
-</note>
-Reload the config of the znapzend daemon
-<code>
-# systemctl reload znapzend.service
-</code>
-. The backup schedule is saved as ZFS volume properties
-<code>
-# zfs get all data/test | grep org.znapzend
-data/test  org.znapzend:tsformat       %Y-%m-%d-%H%M%S                         local
-data/test  org.znapzend:pre_znap_cmd   off                                     local
-data/test  org.znapzend:dst_0          backupuser@destserver:data/test  local
-data/test  org.znapzend:mbuffer        off                                     local
-data/test  org.znapzend:dst_0_plan     1weeks=>30minutes                       local
-data/test  org.znapzend:enabled        on                                      local
-data/test  org.znapzend:zend_delay     0                                       local
-data/test  org.znapzend:recursive      on                                      local
-data/test  org.znapzend:mbuffer_size   1G                                      local
-data/test  org.znapzend:post_znap_cmd  off                                     local
-data/test  org.znapzend:src_plan       1weeks=>30minutes                       local
-</code>
-Watch the output of the znapzend daemon:
-<code>
-:~# journalctl -u znapzend.service -f &
-</code>
-Watch for local snapshots to be created:
-<code>
-# zfs list -t snap
-NAME                                 USED  AVAIL  REFER  MOUNTPOINT
-data/test@2017-08-27-100000             0      -   128K  -
-data/test@2017-08-27-103000             0      -   128K  -
-</code>

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