WinDirStat: see what is eating the disk on Windows
du gives numbers. WinDirStat gives the map: which folder and which extension own the disk.
Export a ZFS ZVOL to a RAW image
A ZVOL is a block device. dd (or qemu-img convert) to .raw. Snapshot first if the VM is up.
HP iLO CLI: users, network, ISO, and power
iLO CLP cheat sheet: accounts, network, virtual media, and power.
Import a ZFS pool after a power outage
Pool will not import. -f force, -F rewind txgs, then scrub.
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.