SMP Linux guests are hanging under KVM. This does not happen always, but at least 50% of the time or so.
If I start the guests with "-smp 1" or just completely omit the "-smp" parameter this doesn't happen.
I can also say that it doesn't seem to happen on a Nehalem-based 8-core Xeon-based machine I've tried it on, but it does happen on both an AMD Phenom II 965 machine (the one this bug report is from) as well as an AMD Phenom II 1090T-based machine.
I am starting the VMs from the command line, manually running qemu-kvm with a command like the following:
Binary package hint: qemu-kvm
SMP Linux guests are hanging under KVM. This does not happen always, but at least 50% of the time or so.
If I start the guests with "-smp 1" or just completely omit the "-smp" parameter this doesn't happen.
I can also say that it doesn't seem to happen on a Nehalem-based 8-core Xeon-based machine I've tried it on, but it does happen on both an AMD Phenom II 965 machine (the one this bug report is from) as well as an AMD Phenom II 1090T-based machine.
I am starting the VMs from the command line, manually running qemu-kvm with a command like the following:
qemu-system-x86_64 -m 1024 -smp 1 -cpu host -drive file=/var/ local/kvm/ machine. qcow2,if= virtio, cache=off, boot=on -net nic,model= virtio, macaddr= 77:88:99: 12:34:56 -net tap -nographic -daemonize
Additional Information:
Description: Ubuntu 10.04.2 LTS
Release: 10.04
qemu-kvm: noroms- 0ubuntu9. 3 noroms- 0ubuntu9. 3 noroms- 0ubuntu9. 3 0 us.archive. ubuntu. com/ubuntu/ lucid-updates/main Packages dpkg/status 12.3+noroms- 0ubuntu9 0 us.archive. ubuntu. com/ubuntu/ lucid/main Packages
Installed: 0.12.3+
Candidate: 0.12.3+
Version table:
*** 0.12.3+
500 http://
100 /var/lib/
0.
500 http://
ProblemType: Bug noroms- 0ubuntu9. 3 ature: Ubuntu 2.6.32-28.55-server 2.6.32.27+drm33.12 /boot/vmlinuz- 2.6.32- 28-server root=UUID= 941072c0- f822-44b4- b61c-09b6daadcb 7c ro quiet splash clocksource=pit asset.tag: To Be Filled By O.E.M. asset.tag: Asset-1234567890 version: Chassis Version MegatrendsInc. :bvr1006: bd08/18/ 2010:svnSystemm anufacturer: pnSystemProduct Name:pvrSystemV ersion: rvnASUSTeKCompu terINC. :rnM4A785- M:rvrRevX. 0x:cvnChassisMa nufacture: ct3:cvrChassisV ersion: version: System Version
DistroRelease: Ubuntu 10.04
Package: qemu-kvm 0.12.3+
ProcVersionSign
Uname: Linux 2.6.32-28-server x86_64
Architecture: amd64
Date: Sun Feb 6 19:11:57 2011
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
KvmCmdLine: Error: command ['ps', '-C', 'kvm', '-F'] failed with exit code 1: UID PID PPID C SZ RSS PSR STIME TTY TIME CMD
MachineType: System manufacturer System Product Name
ProcCmdLine: BOOT_IMAGE=
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: qemu-kvm
dmi.bios.date: 08/18/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1006
dmi.board.
dmi.board.name: M4A785-M
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev X.0x
dmi.chassis.
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: System Product Name
dmi.product.
dmi.sys.vendor: System manufacturer