Z / zfs_release_holds.sh

# zfs.hold.release: $zfs_dataset $zfs_hold_name "mirror" # arc - archive # arc or mirror # How to check that all ZFS snapshots within a pool are without holds before destroying that pool - Server Fault - https://serverfault.com/questions/456301/how-to-check-that-all-zfs-snapshots-within-a-pool-are-without-holds-before-destr alias zfs.release="zfs.hold.release" zfs.hold.release(){ zfs_dataset="${1:-""}" zfs_hold_name="${2:-"mirror"}" zfs_snapshot_userrefs="$(zfs get -Ht snapshot userrefs "$zfs_dataset" | grep -v $'\t'0 | cut -d $'\t' -f 1 )" zfs_snapshot_userref_count="$(zfs get -Ht snapshot userrefs "$zfs_dataset" | grep -v $'\t'0 | cut -d $'\t' -f 1 | wc -l )" echo zfs_snapshot_userref_count: $zfs_snapshot_userref_count if [[ -z "$zfs_snapshot_userref_count" ]] || [[ $zfs_snapshot_userref_count -lt 1 ]];then echo zfs_snapshot_userref_count must be greater than 0 else exit return 0 fi snapshots=( $( echo "$zfs_snapshot_userrefs" | tr '\n' '\0' | xargs -0 zfs holds -H | grep "$zfs_hold_name" | awk '{ print $1 }' | tr '\n' ' ') ) for snapshot in ${snapshots[@]}; do echo sudo zfs release $zfs_hold_name $snapshot sleep 1 sudo zfs release $zfs_hold_name $snapshot done } # ---