This post is updated continually
Semi organized
enlarge / shrink filesystem, different filesystems are easier/harder to extend or shrink
Virsh - Virtual Machines
List images on disk and see locations
See disk locations of vm images
LVM hierachy
#LVM hierarchy, how to picture the components of LVM
Files (Folders, Documents, Pictures ..)
Filesystem (ext4, fat32, ntfs)
/--- LVM ---
Logical Volume - #partitions volume groups $lvs
Volume Group #groups physical volumes $vgs
Physical Volume $pvs
--- LVM --- / #extend/shrink/snapshot harddrive space, consistent backups or application consistent snapshots
Software Raid #redundancy without without physical controller, cheaper but more cpu intensive $mdadm
Partitions
Harddisk
Hardware Raid #Physical raid controllers are expensive and often requires the same part to rebuild an array, higher cost offloads resources
# = comments
() = examples
$$ = commandsUnorganized
Difference between filesystems
Docker rootless vs podman
Install multiple php versions on the same host nd switch between versiionsfor the app
findmnt - see filesystem installed linux
lsblk -
Mounts
Things to look out for: mount options that squishes root an single user or mounts a removable drive with generic ownershi
Disk Drives
smartctl -x