Cannot install KVM guest on software raid

[janka]

I know, I know, software raid is not supported, so I don't expect any answer from the Proxmox team which is only fair!

But I reckon there are a few users out there that might have a clue...

I have installed 1.3 from CD on one 320GB 5400rpm 2,5" disk, upgraded to 1.5 and did a raid 1 on an identical disk following this guide.
Afterwards, when trying to install a KVM guest from ISO I get this error:


I have tried all three kernel versions and different flavors of Linux (kubuntu, suse, fedora) all with similar result.

Without raid, there is no problem.

I know that two 5400rpm disks in software raid is not a killer raid but I would not expect it to fail like this.

Any clue?

jan
http://www.howtoforge.com/how-to-se...m-system-incl-grub-configuration-debian-lenny

 

[Danielc1234]

I am having a similar problem, but have true raid 10 hardware. Seems like the KVM wont allow to install from CDROM.

 

[tom]

I am having a similar problem, but have true raid 10 hardware. Seems like the KVM wont allow to install from CDROM.

KVM guests can be installed from physical cdrom and ISO images without problems. so the issue is not KVM related.

 

[user100]

We use software raid-1 with Proxmox V 1.5 and are able to install from DVD or iso-image to file-storage or to local-LVM as storage like it (more ore less) works on another Host with a HW-Raid-controller (on IDE or virtio). Installed successfully CentOS, Debian, and Win2K (used KVM and 2.6.32 kernel).

Have you checked if proxmox-ve fits together with the kernel-version (for example proxmox-ve-2.6.32 when using pve-kernel-2.6.32-1-pve)? Have you installed the pve-qemu-kvm (0.11.1-2)? Have you maybe tried to use IDE instead of virtio? However even virtio works here (CentOS with modified initrd, Debian/Lenny or Squeeze out of the box).

Btw: Today I´m setting up some VMs (on the still running sw-raid-machine) that was lost on the newly installed second machine with a battery-buffered HW-Raidcontroller. Reason: It seems the HW-Controller made some dumb things. Or mabye he just went out from his slot (I´m still not fully happy how the hw-manufacturer put in the cables below the slot). The result: Everything gets lost now (even testdisk did not find any partitions anymore because it seems the raidcontroller did initialize everything new instead just reimporting old config) and since it was relative fresh install and still not finished, there was just one useable backup right now (surprise, surprise).

I remember that the newer machine with the HW-Raidcontroller had some devicename for the optical-drive which did not work by default in proxmox (making an ISO-dump was a quick workaround that did it). Maybe just some link was set false to some /dev/sr or /dev/scd device. I don´t remember such things on the (older) sw-raid-controller machine. I´m not sure if this have something to do with SW-Raid.


Greetings,
user100