On 07/02/2014 09:10 AM, Ljubomir Ljubojevic wrote: > On 07/02/2014 02:32 PM, Robert Moskowitz wrote: >> On 07/01/2014 06:25 PM, Frank Cox wrote: >>> On Tue, 01 Jul 2014 18:19:32 -0400 >>> Robert Moskowitz wrote: >>> >>>> How do I trouble shoot this? I am assuming that I only got a partially >>>> completed update. >>> Try yum-complete-transaction and see what happens. >> Well it looks like all the updates 'took' /etc/redhat-release now >> reports ver 6.5. >> >> But still getting a kernel panic and boot failing. I can fall back to >> the prior kernel and it will boot. So I tried to copy the lines off the >> monitor, as nothing is getting logged: >> >> IOMMU: failed to mpa dmn 0 >> kernel panic - not syncing: VFS: Unable to mount root fs on >> unknown_block (0,0) >> Pid:1, comm swapper Tainted: G -------------} 2.6.32-431.20.3.el6.i686 #1 >> >> then a a number of dump lines. >> >> The kernel that is working (only other one listed in menu) is: >> 2.6.32-279.22.1.el6.i686 >> > That is very old kernel. Try removing new kernel, and then reinstalling > it, and if that does not work try removing new kernel and installing one > before that, then one before that. Something like "yum install > kernel-2.6.32-279.22.1.el6.i686" should do it. List all kernels with > "yum list kernel*" Sounds a lot like what Harald was saying. So for the first step I get: # yum list kernel* Loaded plugins: fastestmirror, refresh-packagekit, security Loading mirror speeds from cached hostfile * base: ftpmirror.your.org * epel: less.cogeco.net * extras: ftpmirror.your.org * updates: ftpmirror.your.org Installed Packages kernel.i686 2.6.32-279.22.1.el6 @Updates/6.3 kernel.i686 2.6.32-431.20.3.el6 installed kernel-firmware.noarch 2.6.32-431.20.3.el6 installed kernel-headers.i686 2.6.32-431.20.3.el6 installed Available Packages kernel-abi-whitelists.noarch 2.6.32-431.20.3.el6 updates kernel-debug.i686 2.6.32-431.20.3.el6 updates kernel-debug-devel.i686 2.6.32-431.20.3.el6 updates kernel-devel.i686 2.6.32-431.20.3.el6 updates kernel-doc.noarch 2.6.32-431.20.3.el6 updates and # grep kernel /var/log/yum.log Jul 01 14:37:18 Installed: kernel-headers-2.6.32-431.20.3.el6.i686 Jul 01 14:37:22 Updated: kernel-firmware-2.6.32-431.20.3.el6.noarch Jul 01 14:41:31 Updated: libreport-plugin-kerneloops-2.0.9-19.el6.centos.i686 Jul 01 14:42:58 Updated: abrt-addon-kerneloops-2.0.8-21.el6.centos.i686 Jul 01 14:47:47 Updated: dracut-kernel-004-336.el6_5.2.noarch Jul 01 14:47:59 Installed: kernel-2.6.32-431.20.3.el6.i686 Jul 01 23:10:03 Erased: abrt-addon-kerneloops Jul 01 23:10:04 Erased: libreport-plugin-kerneloops Jul 01 23:13:24 Erased: dracut-kernel Jul 01 23:14:43 Erased: kernel-firmware