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| 1 | + | # zfs.hold.release: $zfs_dataset $zfs_hold_name "mirror" | |
| 2 | + | # arc - archive | |
| 3 | + | # arc or mirror | |
| 4 | + | # How to check that all ZFS snapshots within a pool are without holds before destroying that pool - Server Fault - https://serverfault.com/questions/456301/how-to-check-that-all-zfs-snapshots-within-a-pool-are-without-holds-before-destr | |
| 5 | + | alias zfs.release="zfs.hold.release" | |
| 6 | + | zfs.hold.release(){ | |
| 7 | + | ||
| 8 | + | zfs_dataset="${1:-""}" | |
| 9 | + | zfs_hold_name="${2:-"mirror"}" | |
| 10 | + | zfs_snapshot_userrefs="$(zfs get -Ht snapshot userrefs "$zfs_dataset" | grep -v $'\t'0 | cut -d $'\t' -f 1 )" | |
| 11 | + | zfs_snapshot_userref_count="$(zfs get -Ht snapshot userrefs "$zfs_dataset" | grep -v $'\t'0 | cut -d $'\t' -f 1 | wc -l )" | |
| 12 | + | ||
| 13 | + | echo zfs_snapshot_userref_count: $zfs_snapshot_userref_count | |
| 14 | + | if [[ -z "$zfs_snapshot_userref_count" ]] || [[ $zfs_snapshot_userref_count -lt 1 ]];then | |
| 15 | + | echo zfs_snapshot_userref_count must be greater than 0 else exit | |
| 16 | + | return 0 | |
| 17 | + | fi | |
| 18 | + | ||
| 19 | + | snapshots=( $( echo "$zfs_snapshot_userrefs" | tr '\n' '\0' | xargs -0 zfs holds -H | grep "$zfs_hold_name" | awk '{ print $1 }' | tr '\n' ' ') ) | |
| 20 | + | ||
| 21 | + | for snapshot in ${snapshots[@]}; do | |
| 22 | + | echo sudo zfs release $zfs_hold_name $snapshot | |
| 23 | + | sleep 1 | |
| 24 | + | sudo zfs release $zfs_hold_name $snapshot | |
| 25 | + | done | |
| 26 | + | ||
| 27 | + | } | |
| 28 | + | # --- | |
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