ZFS: cannot destroy snapshot, it has holds
Your zfs destroy fails with dataset is busy or dependent clones. Find the hold, release the tag, use deferred destroy, and promote a clone safely.
#snapshots
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ZFS snapshots, clones, rollback and promote
Take, list and diff ZFS snapshots, roll back past newer ones, clone a snapshot, promote the clone so the origin can be destroyed, and read the space columns.
ZFS send/receive backups to a storage VPS
Replicate ZFS datasets to a storage VPS with zfs send and receive: full and incremental streams over SSH, compression, resumable transfers and a systemd timer.
VPS lock-in: how portable is your server?
How interchangeable are VPS providers? Audit your current one on images, snapshot export, IPv6 and billing terms, then cut a move down to one evening.
Fix a duplicate machine-id after cloning a VPS
Two clones sharing one /etc/machine-id can fight over a DHCP lease. Regenerate it safely, and truncate it before you snapshot a golden image.
VPS snapshots vs backups vs clones
A snapshot lives on your provider's infrastructure, so it is not a backup. What each one restores, and what to fix on a cloned VPS before it runs.