Booting from CDROM, requires the host is not running para vitualised (PV), but full virtualised (HVM)
xe vm-param-set HVM-boot-policy="BIOS order" uuid=$vm-uuid
This can be changed back with.
xe vm-param-set HVM-boot-policy="" uuid=$vm-uuid
Force paravirtual Ubuntu machine booting into single user mode:
xe vm-param-set uuid=$vm-uuid PV-args="-- rw quiet console=hvc0 init=/bin/bash"
Show virtual machines timeoffset:
xe vm-list params=name-label,platform,uuid|grep timeoffset: -B2
Clone a running VM:
xe vm-snapshot uuid=$vm-uuid new-name-label=$new-template-name
xe vm-install template="$new-template-name" new-name-label="$new-server-name"
Backup script for clusters, xenservers or single vm’s
See xen-backup.sh
General understanding of SR and VDI