Re: kernel-2.6.32-131.2.1.el6.x86_64 Xen DomUs.
Hi Steven, On Jun 14, 2011, at 0:04, Steven Haigh wrote: In the latest batch of updates, I installed kernel-2.6.32-131.2.1.el6.x86_64 via a 'yum -y update'. It seemed all of my 5 Xen DomUs running SL6 failed to boot upon rebooting. It looks like all of these systems failed at roughly where switchroot is called. Interestingly, I could recover from this by shutting down the DomU, mounting then chrooting the DomUs filesystem and issuing: # rpm -ivh --force kernel-2.6.32-131.2.1.el6.x86_64.rpm Not sure how widespread this issue is, but I had a 100% failure rate on Xen DomUs. The one bare metal system I updated did so with no errors. no problems here on the two Xen domUs we're currently running. But then, we're still updating kernels with rpm -i rather than yum. Just a data point. Regards, Stephan -- Stephan Wiesand DESY -DV- Platanenallee 6 15738 Zeuthen, Germany
Re: kernel-2.6.32-131.2.1.el6.x86_64 Xen DomUs.
How are you booting the xen domU's, with pygrub, pvgrub, or with external kernel? Smells like either the mkinitrd failed to run at all, or ran in such a way that it didn't put some required xen block device into the ramdisk. For that matter--what hypervisor host are you using for the SL6 xen domU's--is it an SL6 guest on an SL5 hypervisor? I thought SL6 didn't support being a xen host anymore. Steve Timm On Tue, 14 Jun 2011, Stephan Wiesand wrote: Hi Steven, On Jun 14, 2011, at 0:04, Steven Haigh wrote: In the latest batch of updates, I installed kernel-2.6.32-131.2.1.el6.x86_64 via a 'yum -y update'. It seemed all of my 5 Xen DomUs running SL6 failed to boot upon rebooting. It looks like all of these systems failed at roughly where switchroot is called. Interestingly, I could recover from this by shutting down the DomU, mounting then chrooting the DomUs filesystem and issuing: # rpm -ivh --force kernel-2.6.32-131.2.1.el6.x86_64.rpm Not sure how widespread this issue is, but I had a 100% failure rate on Xen DomUs. The one bare metal system I updated did so with no errors. no problems here on the two Xen domUs we're currently running. But then, we're still updating kernels with rpm -i rather than yum. Just a data point. Regards, Stephan -- -- Steven C. Timm, Ph.D (630) 840-8525 t...@fnal.gov http://home.fnal.gov/~timm/ Fermilab Computing Division, Scientific Computing Facilities, Grid Facilities Department, FermiGrid Services Group, Group Leader. Lead of FermiCloud project.
Re: kernel-2.6.32-131.2.1.el6.x86_64 Xen DomUs.
On Tue, Jun 14, 2011 at 8:57 AM, Steven Timm t...@fnal.gov wrote: For that matter--what hypervisor host are you using for the SL6 xen domU's--is it an SL6 guest on an SL5 hypervisor? I thought SL6 didn't support being a xen host anymore. It seemed all of my 5 Xen DomUs running SL6 failed to boot upon rebooting. It looks like all of these systems failed at roughly where switchroot is called. Interestingly, I could recover from this by shutting down the DomU, mounting then chrooting the DomUs filesystem and issuing: # rpm -ivh --force kernel-2.6.32-131.2.1.el6.x86_64.rpm Not sure how widespread this issue is, but I had a 100% failure rate on Xen DomUs. The one bare metal system I updated did so with no errors. DomUs are guests. TUV and SL6 do pv-ops, so the same kernel will run baremetal or PV. -JR
Re: kernel-2.6.32-131.2.1.el6.x86_64 Xen DomUs.
On 14/06/2011 11:57 PM, Steven Timm wrote: How are you booting the xen domU's, with pygrub, pvgrub, or with external kernel? Smells like either the mkinitrd failed to run at all, or ran in such a way that it didn't put some required xen block device into the ramdisk. I'm using pygrub. This way each system has its own kernel. I believe the ramdisk failed - either in including a module, or through a silent error. Either way, it failed. For that matter--what hypervisor host are you using for the SL6 xen domU's--is it an SL6 guest on an SL5 hypervisor? I thought SL6 didn't support being a xen host anymore. I use a self-compiled Xen 4.1.0 with a self-compiled 2.6.32.40 kernel. I'm looking at making them all into RPMs and hosting a Xen repo for kernel + xen - but I'm not that experienced in creating RPMs as yet. In time, I'll get around to it. -- Steven Haigh Email: net...@crc.id.au Web: http://www.crc.id.au Phone: (03) 9001 6090 - 0412 935 897 Fax: (03) 8338 0299
kernel-2.6.32-131.2.1.el6.x86_64 Xen DomUs.
Hi all, In the latest batch of updates, I installed kernel-2.6.32-131.2.1.el6.x86_64 via a 'yum -y update'. It seemed all of my 5 Xen DomUs running SL6 failed to boot upon rebooting. It looks like all of these systems failed at roughly where switchroot is called. Interestingly, I could recover from this by shutting down the DomU, mounting then chrooting the DomUs filesystem and issuing: # rpm -ivh --force kernel-2.6.32-131.2.1.el6.x86_64.rpm Not sure how widespread this issue is, but I had a 100% failure rate on Xen DomUs. The one bare metal system I updated did so with no errors. -- Steven Haigh Email: net...@crc.id.au Web: http://www.crc.id.au Phone: (03) 9001 6090 - 0412 935 897 Fax: (03) 8338 0299
