Red Hat Bugzilla – Full Text Bug Listing
|Summary:||qemu not updated on upgrade from F10 to F11|
|Product:||[Fedora] Fedora||Reporter:||Gerry Reno <greno>|
|Component:||qemu||Assignee:||Glauber Costa <gcosta>|
|Status:||CLOSED WORKSFORME||QA Contact:||Fedora Extras Quality Assurance <extras-qa>|
|Version:||rawhide||CC:||dwmw2, gcosta, itamar, kernel-maint, markmc, quintela, virt-maint|
|Fixed In Version:||Doc Type:||Bug Fix|
|Doc Text:||Story Points:||---|
|Last Closed:||2009-06-03 17:43:16 EDT||Type:||---|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
Description Gerry Reno 2009-05-23 18:48:42 EDT
Description of problem: Upgraded host from F10 to F11 (x86_64) and then x86 qemu guests had major problems. They either would not run at all or they would run extremely slow. Version-Release number of selected component (if applicable): 220.127.116.11-155.fc11.x86_64 How reproducible: always Steps to Reproduce: 1. upgrade to F11 (x86_64) 2. start x86 qemu guest 3. see x86 qemu guest fail Actual results: guest either fails to run or runs extremely slow Expected results: guest runs normally Additional info: # cat /proc/cpuinfo #showing just first cpu processor : 0 vendor_id : AuthenticAMD cpu family : 16 model : 2 model name : AMD Phenom(tm) 9850 Quad-Core Processor stepping : 3 cpu MHz : 2511.618 cache size : 512 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 4 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc pni monitor cx16 lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs bogomips : 5023.23 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 48 bits physical, 48 bits virtual power management: ts ttp tm stc 100mhzsteps hwpstate # rpm -q kernel qemu kernel-18.104.22.168-126.fc11.x86_64 kernel-22.214.171.124-155.fc11.x86_64 qemu-0.10-16.fc11.x86_64 If I make each guest only use 1 cpu then I can get them all to run but they run very slow. If I boot into the 126.96.36.199-126 kernel things are even worse. Then only 1 guest will run at all.
Comment 1 Gerry Reno 2009-05-23 18:52:32 EDT
Guest emulators are: /usr/bin/qemu-kvm
Comment 2 Gerry Reno 2009-05-23 19:02:45 EDT
Host clocksource: kernel line: empty (default) Current: tsc Available: tsc hpet acpi_pm jiffies Guest clocksource: kernel line: pit Current: acpi_pm Available: tsc, acpi_pm, jiffies I tried changing clocksource in the guest to both acpi_pm and jiffies but it didn't help.
Comment 3 Chuck Ebbert 2009-05-25 16:43:51 EDT
Can you attach boot messages from the guest when running on the old and new host kernels?
Comment 4 Gerry Reno 2009-05-25 18:03:47 EDT
The problem is that the F11 kernel is not loading the kvm modules. Once I loaded them with modprobe then the guests ran normally. The old kernel is no longer on the machine. Only the two F11 kernels are there. I'm attaching dmesg and boot log.
Comment 7 Gerry Reno 2009-05-25 18:59:58 EDT
Ok, I thought I had this problem fixed but after rebooting the host machine a number of times the kvm modules fail to load and the guests go back to extremely slow performance because there is no kvm.
Comment 8 Chuck Ebbert 2009-05-26 11:49:26 EDT
(In reply to comment #7) > Ok, I thought I had this problem fixed but after rebooting the host machine a > number of times the kvm modules fail to load and the guests go back to > extremely slow performance because there is no kvm. But can you still load the kvm drivers manually?
Comment 9 Gerry Reno 2009-05-26 11:55:34 EDT
Yes the kvm modules can be loaded manually after each reboot.
Comment 10 Gerry Reno 2009-05-26 12:10:14 EDT
Ok, I found a 'qemu' update and ran 'yum update qemu'. This added this file: /etc/sysconfig/modules/kvm.modules. And now the kvm modules stay loaded across reboot.
Comment 11 Chuck Ebbert 2009-05-27 10:33:49 EDT
qemu should have been updated with the upgrade.
Comment 12 Mark McLoughlin 2009-06-03 12:59:48 EDT
Hmm, qemu was updated to qemu-0.10-16.fc11.x86_64, but it sounds like the kvm.modules script was missing/broken ? Looking at: http://kojipkgs.fedoraproject.org/packages/qemu/0.10/16.fc11/x86_64/qemu-system-x86-0.10-16.fc11.x86_64.rpm kvm.modules looks just fine Any yum/anaconda logfiles remaining from the upgrade which might shed a light on what happened?
Comment 13 Gerry Reno 2009-06-03 13:49:33 EDT
No logs, but I do remember there were some selinux avc denials I noticed right after it finished. Don't know how that might affect things.
Comment 14 Mark McLoughlin 2009-06-03 17:43:16 EDT
okay, thanks Gerry Closing for now - if we get any more reports of this, we should re-open and take a closer look.