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man: zfs-snapshot.8: import examples from zfs.8
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #13228
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.\" Copyright 2018 Nexenta Systems, Inc.
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.\" Copyright 2019 Joyent, Inc.
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.\"
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.Dd May 27, 2021
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.Dd March 16, 2022
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.Dt ZFS-SNAPSHOT 8
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.Os
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.
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@ -65,6 +65,64 @@ for details.
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Recursively create snapshots of all descendent datasets
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.El
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.
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.Sh EXAMPLES
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.\" These are, respectively, examples 2, 3, 10, 15 from zfs.8
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.\" Make sure to update them bidirectionally
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.Ss Example 1 : No Creating a ZFS Snapshot
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The following command creates a snapshot named
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.Ar yesterday .
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This snapshot is mounted on demand in the
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.Pa .zfs/snapshot
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directory at the root of the
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.Ar pool/home/bob
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file system.
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.Dl # Nm zfs Cm snapshot Ar pool/home/bob Ns @ Ns Ar yesterday
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.
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.Ss Example 2 : No Creating and Destroying Multiple Snapshots
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The following command creates snapshots named
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.Ar yesterday No of Ar pool/home
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and all of its descendent file systems.
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Each snapshot is mounted on demand in the
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.Pa .zfs/snapshot
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directory at the root of its file system.
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The second command destroys the newly created snapshots.
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.Dl # Nm zfs Cm snapshot Fl r Ar pool/home Ns @ Ns Ar yesterday
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.Dl # Nm zfs Cm destroy Fl r Ar pool/home Ns @ Ns Ar yesterday
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.
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.Ss Example 3 : No Promoting a ZFS Clone
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The following commands illustrate how to test out changes to a file system, and
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then replace the original file system with the changed one, using clones, clone
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promotion, and renaming:
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.Bd -literal -compact -offset Ds
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.No # Nm zfs Cm create Ar pool/project/production
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populate /pool/project/production with data
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.No # Nm zfs Cm snapshot Ar pool/project/production Ns @ Ns Ar today
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.No # Nm zfs Cm clone Ar pool/project/production@today pool/project/beta
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make changes to /pool/project/beta and test them
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.No # Nm zfs Cm promote Ar pool/project/beta
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.No # Nm zfs Cm rename Ar pool/project/production pool/project/legacy
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.No # Nm zfs Cm rename Ar pool/project/beta pool/project/production
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once the legacy version is no longer needed, it can be destroyed
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.No # Nm zfs Cm destroy Ar pool/project/legacy
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.Ed
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.
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.Ss Example 4 : No Performing a Rolling Snapshot
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The following example shows how to maintain a history of snapshots with a
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consistent naming scheme.
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To keep a week's worth of snapshots, the user destroys the oldest snapshot,
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renames the remaining snapshots, and then creates a new snapshot, as follows:
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.Bd -literal -compact -offset Ds
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.No # Nm zfs Cm destroy Fl r Ar pool/users@7daysago
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.No # Nm zfs Cm rename Fl r Ar pool/users@6daysago No @ Ns Ar 7daysago
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.No # Nm zfs Cm rename Fl r Ar pool/users@5daysago No @ Ns Ar 6daysago
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.No # Nm zfs Cm rename Fl r Ar pool/users@4daysago No @ Ns Ar 5daysago
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.No # Nm zfs Cm rename Fl r Ar pool/users@3daysago No @ Ns Ar 4daysago
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.No # Nm zfs Cm rename Fl r Ar pool/users@2daysago No @ Ns Ar 3daysago
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.No # Nm zfs Cm rename Fl r Ar pool/users@yesterday No @ Ns Ar 2daysago
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.No # Nm zfs Cm rename Fl r Ar pool/users@today No @ Ns Ar yesterday
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.No # Nm zfs Cm snapshot Fl r Ar pool/users Ns @ Ns Ar today
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.Ed
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.
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.Sh SEE ALSO
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.Xr zfs-bookmark 8 ,
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.Xr zfs-clone 8 ,
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@ -301,6 +301,7 @@ if invalid command line options were specified.
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.Sh EXAMPLES
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.\" Examples 1, 4, 6, 7, 11, 14, 16 are shared with zfs-set.8.
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.\" Examples 1, 10 are shared with zfs-create.8.
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.\" Examples 2, 3, 10, 15 are also shared with zfs-snapshot.8.
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.\" Examples 3, 10, 15 are shared with zfs-destroy.8.
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.\" Examples 5 are shared with zfs-list.8.
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.\" Examples 8 are shared with zfs-rollback.8.
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