Embedded Files
OviOS Linux v5.0 DRACO Edition released.
"autosnap" is a command used to schedule snapshots in OviOS Linux.
The tool is not available from the ovios shell.
# autosnap --helpUsage: /usr/sbin/autosnap [options] [-l label] <'//' | name [name...]> --default-exclude Exclude datasets if com.ovios:auto-snapshot is unset. -d, --debug Print debugging messages. -e, --event=EVENT Set the com.ovios:auto-snapshot-desc property to EVENT. --fast Use a faster zfs list invocation. -n, --dry-run Print actions without actually doing anything. -s, --skip-scrub Do not snapshot filesystems in scrubbing pools. -h, --help Print this usage message. -k, --keep=NUM Keep NUM recent snapshots and destroy older snapshots. -l, --label=LAB LAB is usually 'hourly', 'daily', or 'monthly'. -p, --prefix=PRE PRE is 'ovios-auto-snap' by default. -q, --quiet Suppress warnings and notices at the console. --sep=CHAR Use CHAR to separate date stamps in snapshot names. -g, --syslog Write messages into the system log. -r, --recursive Snapshot named filesystem and all descendants. -v, --verbose Print info messages. --destroy-only Only destroy older snapshots, do not create new ones. name Filesystem and volume names, or '//' for all ZFS datasets.Examples using autosnap:
1. Take a snapshot of all available datasets in the system
ovios-indt:~ # autosnap //@ovios-auto-snap-2020-10-19-1356, 1 created, 0 destroyed, 0 warnings.ovios-indt:~ #Now you can list all the snapshots in the shell:
ovios-indt:~ # exitovios-shell> snap listList snapshot for a specific volume? If not, all will be listed. (Default: list ALL) [y | n]NAME USED CREATIONOVIOSPOOL@ovios-auto-snap-2020-10-19-1356 0B Mon Oct 19 13:56 2020OVIOSPOOL/lun01@ovios-auto-snap-2020-10-19-1356 0B Mon Oct 19 13:56 2020OVIOSPOOL/lun02@ovios-auto-snap-2020-10-19-1356 0B Mon Oct 19 13:56 2020OVIOSPOOL/nfsvol@ovios-auto-snap-2020-10-19-1356 0B Mon Oct 19 13:56 2020OVIOSPOOL/osbackup@ovios-auto-snap-2020-10-19-1356 0B Mon Oct 19 13:56 2020OVIOSPOOL/smbvol@ovios-auto-snap-2020-10-19-1356 0B Mon Oct 19 13:56 2020ovios-shell>2. Take a snapshot of a one or more LUNs or Volumes and keep the last 7.
ovios-indt:~ # autosnap -g -r -k 7 OVIOSPOOL/lun01 OVIOSPOOL/smbvol@ovios-auto-snap-2020-10-19-1358, 2 created, 0 destroyed, 0 warnings.ovios-indt:~ #In this example we take new snapshots for lun01 and smbvol, and keep the last 7 snapshots.
3. Schedule snapshots with a cron job:
In this example it will take a snapshot of all datasets available every minute, and will only keep the 3 latest of each dataset.
ovios-shell> edit_cron vim2016-08-14 02:31:50 INFO listing root's fcrontabPATH=/bin:/sbin:/usr/bin:/usr/sbin0 3 * * * /usr/sbin/logrotate /etc/logrotate.conf* * * * * /sbin/autosnap -k 3 //Google Sites
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