Ubuntu Karmic Server PV & HVM DomUs sharing same image at Sun xVM 3.4.2 on top of OSOL 1002-128a

Set up Sun xVM 3.4.2 on top of opensolaris 1002-128a via binary packages been built by Pascal Gienger at Index of /software/xvm/3.4.2. Been performing testing bellow my major concern was ability Sun xVM 3.4.2 to handle PV DomUs with boot file systems of ext4fs type. Actually, two guests have been tested : F12 and Ubuntu Karmic Server, in both cases boot partition has been converted to ext3fs to create DomUs manageable via virsh ( virt-manager).

wget http://southbrain.com/software/xvm/3.4.2/SUNWlibvirt-xvm-3.4.2.pkg
wget http://southbrain.com/software/xvm/3.4.2/SUNWlibvirtr-xvm-3.4.2.pkg
wget http://southbrain.com/software/xvm/3.4.2/SUNWurlgrabber-xvm-3.4.2.pkg
........
pkgadd -d SUNWurlgrabber-xvm-3.4.2.pkg
pkgadd -d SUNWlibvirtr-xvm-3.4.2.pkg
pkgadd -d SUNWurlgrabber-xvm-3.4.2.pkg
.......

svcadm enable milestone/xvm

After packages install and enabling xVM, grub entry for xVM should look like :-

title Xen Solaris Development snv_128a X86
findroot (pool_rpool,0,a)
bootfs rpool/ROOT/opensolaris
kernel$ /boot/$ISADIR/xen.gz console=vga dom0_mem=2048M dom0_vcpus_pin=false watchdog=false
module$ /platform/i86xpv/kernel/$ISADIR/unix /platform/i86xpv/kernel/$ISADIR/unix -B $ZFS-BOOTFS
module$ /platform/i86pc/$ISADIR/boot_archive

Install HVM DomU via virt-install :-

virt-install --debug -n KarmicSRV --hvm -r 2048 \
--vcpus=1 -f /dev/zvol/dsk/tvsk2/disk \
--vnc -c /export/home/boris/isos/karmic.iso




Login into HVM :-

# cd /etc/init
# cp tty1.conf hvc0.conf
# vi hvc0.conf
and replace tty1 with hvc0

Shutdown HVM and load PV DomU first time via profile

# cat koala1.py
name="KarmicPV"
memory=2048
bootloader="/usr/lib/xen/bin/pygrub"
kernel="/vmlinuz-2.6.31-14-server"
ramdisk="/boot/initrd.img-2.6.31-14-server"
vif=[' ']
disk=['phy:/dev/zvol/dsk/tvsk2/disk,xvda,w']
extra="root=/dev/xvda2 ro console=hvc0"

xm create -c koala1.py

When DomU gets loaded run tasksel and install Ubuntu Desktop



Shutdown PV DomU and load HVM DomU
Replace grub2 with grub legacy at Karmic HVM DomU:-

# mv /boot/grub /boot/grub_backup
# mkdir /boot/grub
# apt-get --purge remove grub-pc grub-common os-prober
# apt-get install grub
# update-grub
# grub-install /dev/sda

Modify /boot/grub/menu.lst at DomU as follows:-

title Ubuntu 9.10, kernel 2.6.31-14-server (PV)
uuid 8f2cf635-75a0-40d3-9ae5-8d13ce97fe51
kernel /vmlinuz-2.6.31-14-server root=/dev/xvda2 ro quiet splash
initrd /initrd.img-2.6.31-14-server

title Ubuntu 9.10, kernel 2.6.31-14-server (HVM)
uuid 8f2cf635-75a0-40d3-9ae5-8d13ce97fe51
kernel /vmlinuz-2.6.31-14-server root=UUID=8a70da2f-c711-4b86-a785-efdd
0f5fdf8c ro quiet splash
initrd /initrd.img-2.6.31-14-server

Shutdown HVM and load PV DomU via profile koala2.py :-

name="KarmicPV1"
memory=2048
bootloader="/usr/lib/xen/bin/pygrub"
vif=[' ']
disk=['phy:/dev/zvol/dsk/tvsk2/disk,xvda,w']
vfb=['type=vnc,vncunused=1']

# xm create koala2.py
# vncviewer localhost:0

Run virsh dumpxml KarmicPVM > karmic.xml at runtime and shutdown DomU

# virsh define karmic.xml
# virsh start KarmicPV1
# vncviewer localhost :0








References
1. Sun xVM 3.4.2 available, dom0_min_mem

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6 Responses to Ubuntu Karmic Server PV & HVM DomUs sharing same image at Sun xVM 3.4.2 on top of OSOL 1002-128a

  1. [...] Set up Sun xVM 3.4.2 on top of opensolaris 1002-128a via binary packages been built by Pascal Gienger at Index of /software/xvm/3.4.2. More here [...]

  2. Trygve Laugstøl says:

    I could only get this to work if I changed

    kernel=”/vmlinuz-2.6.31-14-server”

    to

    kernel=”/boot/vmlinuz-2.6.31-14-server”

    and

    extra=”root=/dev/xvda1 ro console=hvc0″

    to

    extra=”root=/dev/xvda2 ro console=hvc0″

    in koala1.py

  3. dbaxps says:

    I believe your’s /boot is mounted on /dev/xvda1
    and “/” is mounted on /dev/xvda2.
    It’s just a typo in my blog.
    Could you post “df -h” ?

  4. Trygve Laugstøl says:

    $ df -h
    Filesystem Size Used Avail Use% Mounted on
    /dev/xvda1 1.9G 671M 1.1G 38% /
    udev 1.1G 120K 1.1G 1% /dev
    none 1.1G 0 1.1G 0% /dev/shm
    none 1.1G 32K 1.1G 1% /var/run
    none 1.1G 0 1.1G 0% /var/lock
    none 1.1G 0 1.1G 0% /lib/init/rw

  5. dbaxps says:

    Per your report, just one “/” on /dev/xvda1 :-

    kernel=”/boot/vmlinuz-2.6.31-14-server”
    ramdisk=”/boot/initrd.img-2.6.31-14-server”
    extra= “root=/dev/xvda1 ro console=hvc0″

    You don’t have /dev/xvda2

  6. Ronald says:

    Your mode of explaining everything in this article is really fastidious, every one be able to effortlessly understand it, Thanks a lot.

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