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download PDF document: zfs-release.8.pdf

ZFS-HOLD(8) FreeBSD System Manager's Manual ZFS-HOLD(8)
NAME zfs-hold - hold ZFS snapshots to prevent their removal
SYNOPSIS zfs hold [-r] tag snapshot<?> zfs holds [-rHp] snapshot<?> zfs release [-r] tag snapshot<?>
DESCRIPTION zfs hold [-r] tag snapshot<?> Adds a single reference, named with the tag argument, to the specified snapshots. Each snapshot has its own tag namespace, and tags must be unique within that space.
If a hold exists on a snapshot, attempts to destroy that snapshot by using the zfs destroy command return EBUSY.
-r Specifies that a hold with the given tag is applied recursively to the snapshots of all descendent file systems.
zfs holds [-rHp] snapshot<?> Lists all existing user references for the given snapshot or snapshots.
-r Lists the holds that are set on the named descendent snapshots, in addition to listing the holds on the named snapshot.
-H Do not print headers, use tab-delimited output.
-p Prints holds timestamps as unix epoch timestamps.
zfs release [-r] tag snapshot<?> Removes a single reference, named with the tag argument, from the specified snapshot or snapshots. The tag must already exist for each snapshot. If a hold exists on a snapshot, attempts to destroy that snapshot by using the zfs destroy command return EBUSY.
-r Recursively releases a hold with the given tag on the snapshots of all descendent file systems.
SEE ALSO zfs-destroy(8)
FreeBSD 14.0-RELEASE-p6 June 30, 2019 FreeBSD 14.0-RELEASE-p6