Public bug reported:
Binary package hint: qemu-kvm
1) # lsb_release -rd
Description: Ubuntu 10.04 LTS
Release: 10.04
2) # apt-cache policy qemu-kvm
qemu-kvm:
Installed: 0.12.3+noroms-0ubuntu9
Candidate: 0.12.3+noroms-0ubuntu9
Version table:
*** 0.12.3+noroms-0ubuntu9 0
500 http://70.84.184.243/ubuntu/ lucid/main Packages
100 /var/lib/dpkg/status
3) We expect that the aio threads that do not return should time out.
4) instead, KVM and virtualized guests become unresponsive when the
guest run performance tests against the libaio engine. This is
reproducable 100% by running fio with the libaio engine. In some cases,
the test must be run multiple times. The more vCPUs a guest instance
has, the more likely it is to crash quickly.
In some cases, one guest instance can also cause performance problems
and crashes for other guests on the same physical hardware. The only way
to regain control of KVM is to reboot the server.
This appears to be the same problem addressed by the KVM package in RHEL
5.5 (BZ#525114).
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: qemu-kvm 0.12.3+noroms-0ubuntu9
Uname: Linux 2.6.34-drclaw-iscsimod x86_64
Architecture: amd64
Date: Thu Jun 10 16:21:57 2010
KvmCmdLine: Error: command ['ps', '-C', 'kvm', '-F'] failed with exit code 1:
UID PID PPID C SZ RSS PSR STIME TTY TIME CMD
MachineType: Dell Inc. PowerEdge R710
ProcCmdLine: BOOT_IMAGE=vds-kernel-nfs initrd=iscsimod.lzma rw root=/dev/ram0
quiet BOOTIF=01-a4-ba-db-10-a5-d0
ProcEnviron:
PATH=(custom, no user)
SHELL=/bin/bash
ProcModules:
sch_htb 12262 - - Live 0xffffffffa0032000
iscsi_tcp 7928 - - Live 0xffffffffa002a000
libiscsi_tcp 11533 - - Live 0xffffffffa0021000
libiscsi 31730 - - Live 0xffffffffa0010000
scsi_transport_iscsi 25224 - - Live 0xffffffffa0000000
SourcePackage: qemu-kvm
dmi.bios.date: 10/30/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.3.6
dmi.board.name: 0YDJK3
dmi.board.vendor: Dell Inc.
dmi.board.version: A02
dmi.chassis.type: 23
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr1.3.6:bd10/30/2009:svnDellInc.:pnPowerEdgeR710:pvr:rvnDellInc.:rn0YDJK3:rvrA02:cvnDellInc.:ct23:cvr:
dmi.product.name: PowerEdge R710
dmi.sys.vendor: Dell Inc.
** Affects: qemu-kvm (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug lucid
--
KVM becomes unresponsive due to waiting for aio threads
https://bugs.launchpad.net/bugs/592327
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