I''ve upgraded my Xen system from Xen 3.0.4 to Xen 3.1 by installing a new xen.gz, new xen-tools and new xen-libs for my SLES10 system (using RPMs provided through Novell). However, now the system doesn''t boot up any more. Basically, it seems to boot the Xen hypervisor (I can see all the (XEN) messages), but then suddenly reboots instead of booting the Dom0 kernel. When upgrading to 3.1, do I actually also need to upgrade the Dom0 kernel somehow? If yes then how can I do that? I don''t see any errors in the boot logs, as the kernel doesn''t even seem to start up at all before the system suddenly reboots. Thanks, Anna _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi Anna, try "*noreboot*" in your kernel-line (where xen.gz is) in grub.conf. Maybe this will give you a clue on what''s going on. Greetz Age_M Fischer, Anna schrieb:> I''ve upgraded my Xen system from Xen 3.0.4 to Xen 3.1 by installing a new xen.gz, new xen-tools and new xen-libs for my SLES10 system (using RPMs provided through Novell). However, now the system doesn''t boot up any more. Basically, it seems to boot the Xen hypervisor (I can see all the (XEN) messages), but then suddenly reboots instead of booting the Dom0 kernel. When upgrading to 3.1, do I actually also need to upgrade the Dom0 kernel somehow? If yes then how can I do that? I don''t see any errors in the boot logs, as the kernel doesn''t even seem to start up at all before the system suddenly reboots. > > Thanks, > Anna > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users > >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> try "*noreboot*" in your kernel-line (where xen.gz is) in grub.conf. > Maybe this will give you a clue on what''s going on.Good plan. If any interesting stuff comes out you could just photograph it with a digital camera. Or for long output (or if you lack regular physical access) you can use a serial line to capture output from Xen.> > I''ve upgraded my Xen system from Xen 3.0.4 to Xen 3.1 by installing a new > > xen.gz, new xen-tools and new xen-libs for my SLES10 system (using RPMs > > provided through Novell). However, now the system doesn''t boot up any > > more.Out of interest, did you uninstall the old Xen? The userspace tools can get mixed up and broken if you don''t remove one version before installing a different one. It doesn''t sound like that''s your current problem though, as what you''re seeing happens too early during boot.> > Basically, it seems to boot the Xen hypervisor (I can see all the > > (XEN) messages), but then suddenly reboots instead of booting the Dom0 > > kernel. When upgrading to 3.1, do I actually also need to upgrade the > > Dom0 kernel somehow?The Xen<->dom0 kernel interface didn''t change, so in that respect you don''t need to update the kernel... However, between 3.0.4 and 3.1 the default memory model changed from being non-PAE to PAE. My guess is that your new Xen wants a PAE dom0 kernel, whilst your older dom0 kernel is non-PAE. The solution here is either to upgrade the kernel to the newer, PAE one that presumably matches your new Xen packages? Or to try to get some non-PAE Xen 3.1 packages.> > If yes then how can I do that?I''d think there should be appropriate packages available from the same source you got your other upgrade packages. Have you had any luck finding these?> > I don''t see any > > errors in the boot logs, as the kernel doesn''t even seem to start up at > > all before the system suddenly reboots.You''ll probably find, once you''ve put noreboot on the Xen cmdline, that there''s a message saying something like "Xen and dom0 mismatched... Xen is PAE ... Dom0 is non-PAE". not in exactly those words but something to that effect. Cheers, Mark> > > > Thanks, > > Anna > > > > _______________________________________________ > > Xen-users mailing list > > Xen-users@lists.xensource.com > > http://lists.xensource.com/xen-users > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users-- Push Me Pull You - Distributed SCM tool (http://www.cl.cam.ac.uk/~maw48/pmpu/) _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
[This email is either empty or too large to be displayed at this time]
I''ve tried capturing the screen output now and in fact I don''t see any error messages. The boot process simply stops before loading Dom0 initrd and kernel. I''ve used the kernel+initrd successfully with Xen 3.0.4 before, so why does upgrading to Xen 3.1 stop the machine from booting up at all? Is there anything else I could try out? Thanks, Anna> > -----Original Message----- > > From: Age_M [mailto:Age_M@gmx.de] > > Sent: 04 April 2008 19:41 > > To: Fischer, Anna > > Cc: xen-users@lists.xensource.com > > Subject: Re: [Xen-users] Problems upgrading to Xen 3.1 > > > > Hi Anna, > > > > try "*noreboot*" in your kernel-line (where xen.gz is) in grub.conf. > > Maybe this will give you a clue on what''s going on. > > > > Greetz Age_M > > > > > > Fischer, Anna schrieb: > > > I''ve upgraded my Xen system from Xen 3.0.4 to Xen 3.1 by installing > a > > new xen.gz, new xen-tools and new xen-libs for my SLES10 system > (using > > RPMs provided through Novell). However, now the system doesn''t boot > up > > any more. Basically, it seems to boot the Xen hypervisor (I can see > all > > the (XEN) messages), but then suddenly reboots instead of booting the > > Dom0 kernel. When upgrading to 3.1, do I actually also need to > upgrade > > the Dom0 kernel somehow? If yes then how can I do that? I don''t see > any > > errors in the boot logs, as the kernel doesn''t even seem to start up > at > > all before the system suddenly reboots. > > > > > > Thanks, > > > Anna > > > > > > _______________________________________________ > > > Xen-users mailing list > > > Xen-users@lists.xensource.com > > > http://lists.xensource.com/xen-users > > > > > >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users