[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-users] Troubles converting a pv host from dom0-hosted kernel to self-contained kernel
Hello list. I have a perfectly working PV host, with this configuration: kernel = "/boot/vmlinuz-2.6.18.8-xen-3.3.0-7mdv" ramdisk = "/boot/initrd-2.6.18.8-xen-3.3.0-7mdv.img" root = "/dev/sda1 ro" extra = "(hd0)/boot/grub/menu.lst" memory = 256 maxmem = 512 name = "sexonthebeach" uuid = "f36962f5-0dec-4708-84a0-f5b4dea48d34" disk = [ 'phy:/dev/vg0/sexonthebeach,sda1,w' ] vif = [ 'mac=00:16:3e:00:00:13, bridge=services' ]As this involves heavy coupling between dom0 and domU, I'm trying to make the PV host self-contained. AFAIK, the only way to do it is via pvgrub. Here is the configuration: kernel = "/usr/lib/xen/boot/pv-grub-x86_64.gz" extra = "(hd0)/boot/grub/menu.lst" memory = 256 maxmem = 512 name = "sexonthebeach" uuid = "f36962f5-0dec-4708-84a0-f5b4dea48d34" disk = [ 'phy:/dev/vg0/sexonthebeach,sda1,w' ] vif = [ 'mac=00:16:3e:00:00:13, bridge=services' ] The domU grub configuration: timeout 10 color black/cyan yellow/cyan default 0 title linux kernel (hd0)/boot/vmlinuz-server root=/dev/xvda1 initrd (hd0)/boot/initrd-server.imgFirst issue: I found than it was mandatory to use root=/dev/xvda1 in order to mount root device when booting, despite the partition being exported as sda1 according to domU configuration. Is this normal ? Second issue, the boot stop at root partition mount time, trying to force fsck: [/sbin/fsck.ext3 (1) -- /] fsck.ext3 -a -a /dev/sda1 fsck.ext3: No such file or directory while trying to open /dev/sda1 /dev/sda1: The superblock could not be read or does not describe a correct ext2 filesystem. If the device is valid and it really contains an ext2 filesystem (and not swap or ufs or something else), then the superblock is corrupt, and you might try running e2fsck with an alternate superblock: e2fsck -b 8193 <device>This happens whatever device I use for root partition in domU /etc/fstab (/dev/sda1 or /dev/xdva1). However, I can perfectly mount /dev/vg0/sexonthebeach as an ext3 partition in domU. Morevoer, the emergency shell has expected content monted under / in both case... Last question, loosely related to this problem: is there a way to easily convert a partition-based host to a disk-based host (phy:/dev/vg0/foo,sda1 -> phy:/dev/vg0/foo,sda) ? -- Guillaume Rousse Service des Moyens Informatiques INRIA Saclay - Île-de-France Parc Orsay Université, 4 rue J. Monod 91893 Orsay Cedex France Tel: 01 69 35 69 62 _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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