Native ZFS encryption (OpenZFS): create, inherit, change-key
encryption=on at create. Children inherit. On Linux, rotate with zfs change-key.
Protect ZFS snapshots from destroy with hold
zfs destroy says dataset is busy. That is a hold. How to set one and drop it.
Proxmox templates from Linux cloud images (qm + cloud-init)
Five steps: download the cloud image, qm create, import the disk, qm template, clone.
Read an HP iLO license key without the web UI
GET https:///xmldata?item=CpqKey and pull the key out of the XML.
Replace a disk in a ZFS pool
zpool status gives you a GUID, not /dev/sde. replace -f GUID /dev/disk/by-id/…
Send ZFS snapshots to another host (and on to S3)
A zfs send stream is not a tarball. Another pool first, S3 object if you need it.
Upgrade HP iLO firmware over SSH
iLO web UI is dead. Serve the .bin over HTTP and load it from the SSH session.
ZFS command cheat sheet (pool, compression, cache, log)
The 2 a.m. commands to create, mount, compress, and not destroy the wrong pool.
zfs send/recv from an unencrypted dataset into an encrypted one
No -w. -o encryption=on only on the first recv. The destination dataset name is required.