The recently released Ubuntu 14.04 “Trusty Tahir” LTS release comes with Xen HVM (Hardware-assisted virtualization) support. Previous LTS releases supported the older Xen PV (para-virtualization) mode only.
Phoronix has recently published a comparison between Ubuntu 14.04 Xen PV with Xen HVM virtualisation which seems to suggest that Ubuntu 14.04 with Xen HVM performs better than Xen PV on EC2 cloud. You can read the full article at Ubuntu 14.04 On Amazon EC2: Xen PV vs. HVM
Continue reading Running Ubuntu 14.04 “Trusty Tahir” on XenServer CloudStack
Update (20131106): Please see FreeBSD 10 On CloudStack + XenServer Blog post instead.
UPDATE (20131015): Major changes have gone into FreeBSD 10 including fixes for the xenbusb_nop_confighook_cb. BETA2 onwards would support XenServer out of the box. The ISOs are available at http://ftp.freebsd.org/pub/FreeBSD/releases/ISO-IMAGES/10.0/.
Pretty excited to have FreeBSD 10.0-CURRENT running under XenServer 6.1 in HVM mode using the XENHVM configs.
Follow the instructions in http://home.uncon.net/dokuwiki/doku.php?id=xenserver:freebsd to workaround the ‘xenbusb_nop_confighook_cb’ issue on boot-up. UPDATE (20131015):This is now fixed with r256423
Continue reading FreeBSD On XenServer