Thanks all for the advice. It seems there is an issue with Dracut booting from these hosts when LVM is used. dracut: Scanning devices sda2 for LVM logical volumes VolGroup/lv_swap VolGroup/lv_root dracut: inactive '/dev/VolGroup/lv_swap' [1.94 GiB] inherit dracut: inactive '/dev/VolGroup/lv_root' [230.69 GiB] inherit dracut: PARTIAL MODE. Incomplete logical volumes will be processed. dracut: Operation prohibited while global/metadata_read_only is set. dracut: Operation prohibited while global/metadata_read_only is set. ... dracut Warning: LVM VolGroup/lv_swap not found dracut Warning: LVM VolGroup/lv_root not found Switching my kickstart to use real partitions rather than LVM solved the issue. Not sure if that's enough detail to figure out what's wrong / missing from the kernel / initrd. Bob > -----Original Message----- > From: centos-virt-bounces@xxxxxxxxxx [mailto:centos-virt- > bounces@xxxxxxxxxx] On Behalf Of Johnny Hughes > Sent: 04 December 2014 09:51 > To: centos-virt@xxxxxxxxxx > Subject: Re: xen-c6 fails to boot > > On 12/02/2014 07:36 AM, Bob Ball wrote: > >> -----Original Message----- > >> From: Johnny Hughes > >> On 12/01/2014 04:48 AM, Bob Ball wrote: > >>> > >>> [<ffffffff81575480>] panic+0xc4/0x1e1 > >>> [<ffffffff81054836>] find_new_reaper+0x176/0x180 > >>> [<ffffffff81055345>] forget_original_parent+0x45/0x2c0 > >>> [<ffffffff81107214>] ? task_function_call+0x44/0x50 > >>> [<ffffffff810555d7>] exit_notify+0x17/0x140 > >>> [<ffffffff81057053>] do_exit+0x1f3/0x450 > >>> [<ffffffff81057305>] do_group_exit+0x55/0xd0 > >>> [<ffffffff81057397>] sys_exit_group+0x17/0x20 > >>> [<ffffffff815806a9>] system_call_fastpath+0x16/0x1b > >> > >> It works fine for me .. you might consider using CentOS-6.6 and not > >> CentOS-6.4 .. also, we now use a 3.10 kernel and the latest version of > >> xen is 4.2.5 in the /6.6/xen4/ repo. > > > > Updated to CentOS-6.6, but I still get the same issue. > > > > By the above I assume you're using the xen4 repo rather than the xen-c6 > repository referred to by http://wiki.centos.org/QaWiki/Xen4? > > Is the xen-c6 repo now considered broken or deprecated with the xen4 > repo used in preference? > > > >> BUT .. it seems to be a hardware/driver issue. > > > > The same hardware (cluster of 10 machines) was successfully working with > the xen-c6 repository previously; I'm not sure what issue might have > occurred to cause this failure on all hosts which is why I think it's a software > issue. Possibly a driver issue although the last successful run was using the > same kernel so I assume had roughly the same drivers installed. Note that > the 3.4 kernel boots fine without Xen, it is only under Xen that the boot fails > and the machine restarts. > > > > What I mean by hardware issue is the way the hardware interacts with the > newer versions of xen. I guess what I should have said is that there is > some unique issue with your hardware. > > The updates have have posted are needed for numerous security updates, > so I would not recommend running older versions long term for security > reasons ... BUT ... all the previously released software is here: > > http://vault.centos.org/6.4/xen4/ > > http://vault.centos.org/6.5/xen4/ > > and > > http://mirror.centos.org/centos/6.6/xen4/ > > In this unique case (ie, your exact hardware and software combinations), > you may need to experiment with and find the exact combination of > software that works for you. > > In any event, all the software we have previously released is in those > locations, so getting a combination that works so we can isolate the > issue that causes it all to die is likely the best starting point. > > _______________________________________________ CentOS-virt mailing list CentOS-virt@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos-virt
