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[Xen-users] Kernel panics

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: Yves Dorfsman <yves@xxxxxxxxx>
  • Date: Wed, 04 Jul 2007 22:30:37 -0600 (MDT)
  • Delivery-date: Wed, 04 Jul 2007 21:28:38 -0700
  • List-id: Xen user discussion <xen-users.lists.xensource.com>


I'm knwe to XEN, and having the usual panic problem.
XEN ( loads, then the kernel loads, then it says:
"Please append a correct "root=" boot option"
"Not syncying VFS unable to mount root fs on unknown-block(2,0)"
(sort of, I'm catching this just before it reboots !).

I've googled, and it seems that the typical two sources of this problems are invalid initrd and/or missing drivers in the kernel. So before I turn mad, I've got a bunch of questions I'd be very happy if somebody could help me with:

Do you HAVE to have an initrd, or if you managed to put all the necessary drivers in the kernel, you should be able to boot without an initrd ?

My root partition is formated with JFS. Can this be an issue, or as long as I have the JFS drivers in the kernel I should be fine ?

Is there a way to capture the console output, short of using the serial line (or a digital camera :-) ?

Or a way to make it stop and wait for a key to be pressed before it reboots ?

When I do use an initrd, I get a segfault from the linuxrc.
Depending what version of mkinitrd I use I get different results, a lot of the time I can't even mount the gunzip resulting file, and when I can mount it, I get a lot of empty directories.... Is there a better way of producing the initrd ?


Yves Dorfsman                                             yves@xxxxxxxxx

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