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[
{ type: install
message: <<EOM
To enable automatic snapshots, place lines such as these into /etc/crontab:
PATH=/etc:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin
15,30,45 * * * * root %%PREFIX%%/sbin/zfs-auto-snapshot frequent 4
0 * * * * root %%PREFIX%%/sbin/zfs-auto-snapshot hourly 24
7 0 * * * root %%PREFIX%%/sbin/zfs-auto-snapshot daily 7
14 0 * * 7 root %%PREFIX%%/sbin/zfs-auto-snapshot weekly 4
28 0 1 * * root %%PREFIX%%/sbin/zfs-auto-snapshot monthly 12
This will keep 4 15-minutely snapshots, 24 hourly snapshots, 7 daily snapshots,
4 weekly snapshots and 12 monthly snapshots. Any resulting zero-sized snapshots
will be automatically cleaned up.
Enable snapshotting on a dataset or top-level pool with:
zfs set com.sun:auto-snapshot=true DATASET
Children datasets can be disabled for snapshot with:
zfs set com.sun:auto-snapshot=false DATASET
Or for specific intervals:
zfs set com.sun:auto-snapshot:frequent=false DATASET
See website and command usage output for further details.
EOM
}
]
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