CentOS 6.4 comes with native support for Hyper-V

CentOS 6.4 comes with Linux integration Services build-in.
"Microsoft Hyper-V drivers have been added to allow CentOS to be more efficient as a Virtual Machine when installed on Microsoft Hyper-V server."
http://wiki.centos.org/Manuals/ReleaseNotes/CentOS6.4
Bravo. Will FreeBSD 9.x follow?

The linux kernel 2.6.32 has the hyper-v support and other distributions such as Ubuntu should also be compatible.

FreeBSD 9.1 SU+J issues under Hyper-V

After several days of running freshly installed  FreeBSD 9.1 64bit is showing signs of fatigue - SU+J file system corrupt "panic: ufs_dirbad: .. mangled entry", running fsck -y in a single mode fixed the issues but many installed previously packages, such as ruby, mc were damaged.

Clearly it comes from somewhat poor integration with virtual environment, in this case hyper-v. I will reinstall FreeBSD from scratch and try to disable SU+J to see if it is getting more stable.

Installing FreeBSD 9.1 64bit on Windows 8 pro Hyper-V

FreeBSD installs without any issues if you add Legacy Network Adapter, instead of standard one in VM settings before install. I used ISO file 64bit  FreeBSD-9.1-RELEASE-amd64-dvd1. I assume the 32bit would have the same procedure.

update: out of box there are no Integration Services (heartbeat, time, reboot, etc..), but there is a patch that MS is trying to incorporate into FreeBSD / refer to https://github.com/FreeBSDonHyper-V/freebsd/wiki/Build-the-kernel-with-the-HyperV-drivers

the patch is sort of ready for 8.2 but not yet for 9.1, anyway this is what you can do to try to add hyper-v support in 9.1, run:

# pkg_add -r git
# cd /usr
# git clone https://github.com/FreeBSDonHyper-V/freebsd-head.git
# cd /usr/freebsd-head
# make buildworld
# make buildkernel KERNCONF=HYPERV_VM

for 8.3 or 8.2 follow the instruction here http://buchizo.wordpress.com/2012/09/12/freebsd-on-windows-azure-vms-en/

The hyper-v  on Windows 8 pro will complain that network adapter hn0 is in degraded mode and that integration service upgrade required.

freebsd-update error

Freebsd-update error:


root@FreeBSD:/ # freebsd-update fetch
Looking up update.FreeBSD.org mirrors... 3 mirrors found.
Fetching metadata signature for 9.1-RELEASE from update4.freebsd.org... done.
Fetching metadata index... done.
Inspecting system... done.
Preparing to download files... done.

The following files will be added as part of updating to 9.1-RELEASE-p2:
/usr/src/crypto/openssl/ssl/s3_cbc.c

root@FreeBSD:/ # freebsd-update install
Installing updates...install: ///usr/src/crypto/openssl/ssl/s3_cbc.c: No such file or directory
 done.

to solve it, just create that missing folder - mkdir -p /usr/src/crypto/openssl/ssl

This happens if you did not install sources tree.