Bug #968867 “KVM is unstable: virtio bug” : Bugs : qemu-kvm package : Ubuntu

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max (mikhmv) wrote on 2012-03-30:

#1

Screenshot of error. Edit (28.2 KiB, image/png)

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max (mikhmv) wrote on 2012-03-30:

#2

max@s0:/var/lib/one/var$ uname -a
Linux s0 3.2.0-20-generic #33-Ubuntu SMP Tue Mar 27 16:42:26 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

max@s0:/var/lib/one/var$ kvm --version
QEMU emulator version 1.0 (qemu-kvm-devel), Copyright (c) 2003-2008 Fabrice Bellard

ps aux| grep kvm | grep one-52
oneadmin 62687 28.9 0.3 25283292 839204 ? Sl 01:31 2:22 /usr/bin/kvm -S -M pc-1.0 -enable-kvm -m 20040 -smp 60,sockets=60,cores=1,threads=1 -name one-52 -uuid 30c77a47-85c4-65dd-6c21-9d9b3e66cabe -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/one-52.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -drive file=/var/lib/one/var//52/images/disk.0,if=none,id=drive-virtio-disk0,format=raw,cache=writeback -device virtio-blk-pci,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -drive file=/var/lib/one/var//52/images/disk.1,if=none,id=drive-virtio-disk4,format=raw,cache=writeback -device virtio-blk-pci,bus=pci.0,addr=0x6,drive=drive-virtio-disk4,id=virtio-disk4 -fsdev local,security_model=mapped,id=fsdev-fs0,path=/tank/biouml-shared -device virtio-9p-pci,id=fs0,fsdev=fsdev-fs0,mount_tag=VirtFS,bus=pci.0,addr=0x3 -netdev tap,fd=21,id=hostnet0 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=02:00:c0:a8:02:1e,bus=pci.0,addr=0x4 -usb -device usb-mouse,id=input0 -vnc 0.0.0.0:52 -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7 -cpu host

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Serge Hallyn (serge-hallyn) wrote on 2012-03-30:

#3

Please run "apport-collect 968867" if possible.

Do you have any errors in syslog on the host?

If you remove the 9p fs, does this still happen?

Changed in qemu-kvm (Ubuntu):
importance:	Undecided → High
status:	New → Incomplete

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max (mikhmv) wrote on 2012-03-31:

#4

Syslog on host does not contain any errors.
I cannot remove 9p. We store all data on underline FS and sharing between different VM's.

I run apport-collect 968867.
the server doesn't have X. I follow instructions in command line but not sure was it work well.
Does system submit anything?

Regards

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Serge Hallyn (serge-hallyn) wrote on 2012-04-02:

#5

Sorry, no, nothing was added by apport :(

As noone else is experiencing this problem, I suspect it's actually caused by the 9p code, but can't be certain.

I'll need to try to reproduce. If you can try (as mentioned in your other bug) the qemu-kvm package from ppa:ubuntu-virt/ppa, we can see if upstream fixes the issue.

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max (mikhmv) wrote on 2012-04-03: BootDmesg.txt

#6

BootDmesg.txt Edit (96.6 KiB, text/plain)

apport information

tags:	added: apport-collected precise third-party-packages
description:	updated

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max (mikhmv) wrote on 2012-04-03: CurrentDmesg.txt

#7

CurrentDmesg.txt Edit (4.6 KiB, text/plain)

apport information

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max (mikhmv) wrote on 2012-04-03: Dependencies.txt

#8

Dependencies.txt Edit (2.6 KiB, text/plain)

apport information

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max (mikhmv) wrote on 2012-04-03: KvmCmdLine.txt

#9

KvmCmdLine.txt Edit (4.7 KiB, text/plain)

apport information

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max (mikhmv) wrote on 2012-04-03: Lspci.txt

#10

Lspci.txt Edit (28.7 KiB, text/plain)

apport information

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max (mikhmv) wrote on 2012-04-03: Lsusb.txt

#11

Lsusb.txt Edit (499 bytes, text/plain)

apport information

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max (mikhmv) wrote on 2012-04-03: ProcCpuinfo.txt

#12

ProcCpuinfo.txt Edit (67.7 KiB, text/plain)

apport information

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max (mikhmv) wrote on 2012-04-03: ProcEnviron.txt

#13

ProcEnviron.txt Edit (111 bytes, text/plain)

apport information

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max (mikhmv) wrote on 2012-04-03: ProcInterrupts.txt

#14

ProcInterrupts.txt Edit (33.2 KiB, text/plain)

apport information

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max (mikhmv) wrote on 2012-04-03: ProcModules.txt

#15

ProcModules.txt Edit (3.5 KiB, text/plain)

apport information

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max (mikhmv) wrote on 2012-04-03: RelatedPackageVersions.txt

#16

RelatedPackageVersions.txt Edit (2.0 KiB, text/plain)

apport information

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max (mikhmv) wrote on 2012-04-03: UdevDb.txt

#17

UdevDb.txt Edit (166.4 KiB, text/plain)

apport information

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max (mikhmv) wrote on 2012-04-03: UdevLog.txt

#18

UdevLog.txt Edit (377.3 KiB, text/plain)

apport information

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Serge Hallyn (serge-hallyn) wrote on 2012-04-03:

#19

Thanks, the information came through.

can you show the result of 'cat /proc/self/mounts' and 'cat /proc/self/mountinfo'?

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max (mikhmv) wrote on 2012-04-04:

#20

Download full text (6.1 KiB)

On host:

max@s0:~$ cat /proc/self/mounts
rootfs / rootfs rw 0 0
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
udev /dev devtmpfs rw,relatime,size=132034552k,nr_inodes=33008638,mode=755 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
tmpfs /run tmpfs rw,nosuid,relatime,size=52817444k,mode=755 0 0
/dev/disk/by-uuid/39e3c519-7ef2-44ea-af9f-60f5328337f2 / ext4 rw,relatime,errors=remount-ro,user_xattr,acl,barrier=1,data=ordered 0 0
cgroup /sys/fs/cgroup tmpfs rw,relatime,mode=755 0 0
cgroup /sys/fs/cgroup/cpuset cgroup rw,relatime,cpuset 0 0
cgroup /sys/fs/cgroup/cpu cgroup rw,relatime,cpu 0 0
cgroup /sys/fs/cgroup/cpuacct cgroup rw,relatime,cpuacct 0 0
cgroup /sys/fs/cgroup/memory cgroup rw,relatime,memory 0 0
cgroup /sys/fs/cgroup/devices cgroup rw,relatime,devices 0 0
cgroup /sys/fs/cgroup/freezer cgroup rw,relatime,freezer 0 0
cgroup /sys/fs/cgroup/blkio cgroup rw,relatime,blkio 0 0
cgroup /sys/fs/cgroup/perf_event cgroup rw,relatime,perf_event 0 0
none /sys/fs/fuse/connections fusectl rw,relatime 0 0
none /sys/kernel/debug debugfs rw,relatime 0 0
none /sys/kernel/security securityfs rw,relatime 0 0
none /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k 0 0
none /run/shm tmpfs rw,nosuid,nodev,relatime 0 0
/dev/sda1 /boot ext4 rw,relatime,user_xattr,acl,barrier=1,data=ordered 0 0
rpc_pipefs /run/rpc_pipefs rpc_pipefs rw,relatime 0 0
nfsd /proc/fs/nfsd nfsd rw,relatime 0 0
tank /tank zfs rw,relatime,xattr 0 0
tank/Irina /tank/Irina zfs rw,relatime,xattr 0 0
tank/OpenNebula /tank/OpenNebula zfs rw,relatime,xattr 0 0
tank/biouml-shared /tank/biouml-shared zfs rw,relatime,xattr 0 0

max@s0:~$ cat /proc/self/mountinfo
15 20 0:14 / /sys rw,nosuid,nodev,noexec,relatime - sysfs sysfs rw
16 20 0:3 / /proc rw,nosuid,nodev,noexec,relatime - proc proc rw
17 20 0:5 / /dev rw,relatime - devtmpfs udev rw,size=132034552k,nr_inodes=33008638,mode=755
18 17 0:11 / /dev/pts rw,nosuid,noexec,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=000
19 20 0:15 / /run rw,nosuid,relatime - tmpfs tmpfs rw,size=52817444k,mode=755
20 1 8:2 / / rw,relatime - ext4 /dev/disk/by-uuid/39e3c519-7ef2-44ea-af9f-60f5328337f2 rw,errors=remount-ro,user_xattr,acl,barrier=1,data=ordered
22 15 0:16 / /sys/fs/cgroup rw,relatime - tmpfs cgroup rw,mode=755
23 22 0:17 / /sys/fs/cgroup/cpuset rw,relatime - cgroup cgroup rw,cpuset
24 22 0:18 / /sys/fs/cgroup/cpu rw,relatime - cgroup cgroup rw,cpu
25 22 0:19 / /sys/fs/cgroup/cpuacct rw,relatime - cgroup cgroup rw,cpuacct
26 22 0:20 / /sys/fs/cgroup/memory rw,relatime - cgroup cgroup rw,memory
27 22 0:21 / /sys/fs/cgroup/devices rw,relatime - cgroup cgroup rw,devices
28 22 0:22 / /sys/fs/cgroup/freezer rw,relatime - cgroup cgroup rw,freezer
29 22 0:23 / /sys/fs/cgroup/blkio rw,relatime - cgroup cgroup rw,blkio
30 22 0:24 / /sys/fs/cgroup/perf_event rw,relatime - cgroup cgroup rw,perf_event
31 15 0:25 / /sys/fs/fuse/connections rw,relatime - fusectl none rw
32 15 0:6 / /sys/kernel/debug rw,relatime - debugfs none rw
33 15 0:10 / /sys/kernel/security rw,relatime - securityfs none rw
34 19 0:26 / /run/lock rw,nosuid,nodev,noexec,relatime - t...

On host:

max@s0:~$ cat /proc/self/mounts
rootfs / rootfs rw 0 0
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
udev /dev devtmpfs rw,relatime,size=132034552k,nr_inodes=33008638,mode=755 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
tmpfs /run tmpfs rw,nosuid,relatime,size=52817444k,mode=755 0 0
/dev/disk/by-uuid/39e3c519-7ef2-44ea-af9f-60f5328337f2 / ext4 rw,relatime,errors=remount-ro,user_xattr,acl,barrier=1,data=ordered 0 0
cgroup /sys/fs/cgroup tmpfs rw,relatime,mode=755 0 0
cgroup /sys/fs/cgroup/cpuset cgroup rw,relatime,cpuset 0 0
cgroup /sys/fs/cgroup/cpu cgroup rw,relatime,cpu 0 0
cgroup /sys/fs/cgroup/cpuacct cgroup rw,relatime,cpuacct 0 0
cgroup /sys/fs/cgroup/memory cgroup rw,relatime,memory 0 0
cgroup /sys/fs/cgroup/devices cgroup rw,relatime,devices 0 0
cgroup /sys/fs/cgroup/freezer cgroup rw,relatime,freezer 0 0
cgroup /sys/fs/cgroup/blkio cgroup rw,relatime,blkio 0 0
cgroup /sys/fs/cgroup/perf_event cgroup rw,relatime,perf_event 0 0
none /sys/fs/fuse/connections fusectl rw,relatime 0 0
none /sys/kernel/debug debugfs rw,relatime 0 0
none /sys/kernel/security securityfs rw,relatime 0 0
none /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k 0 0
none /run/shm tmpfs rw,nosuid,nodev,relatime 0 0
/dev/sda1 /boot ext4 rw,relatime,user_xattr,acl,barrier=1,data=ordered 0 0
rpc_pipefs /run/rpc_pipefs rpc_pipefs rw,relatime 0 0
nfsd /proc/fs/nfsd nfsd rw,relatime 0 0
tank /tank zfs rw,relatime,xattr 0 0
tank/Irina /tank/Irina zfs rw,relatime,xattr 0 0
tank/OpenNebula /tank/OpenNebula zfs rw,relatime,xattr 0 0
tank/biouml-shared /tank/biouml-shared zfs rw,relatime,xattr 0 0

max@s0:~$ cat /proc/self/mountinfo
15 20 0:14 / /sys rw,nosuid,nodev,noexec,relatime - sysfs sysfs rw
16 20 0:3 / /proc rw,nosuid,nodev,noexec,relatime - proc proc rw
17 20 0:5 / /dev rw,relatime - devtmpfs udev rw,size=132034552k,nr_inodes=33008638,mode=755
18 17 0:11 / /dev/pts rw,nosuid,noexec,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=000
19 20 0:15 / /run rw,nosuid,relatime - tmpfs tmpfs rw,size=52817444k,mode=755
20 1 8:2 / / rw,relatime - ext4 /dev/disk/by-uuid/39e3c519-7ef2-44ea-af9f-60f5328337f2 rw,errors=remount-ro,user_xattr,acl,barrier=1,data=ordered
22 15 0:16 / /sys/fs/cgroup rw,relatime - tmpfs cgroup rw,mode=755
23 22 0:17 / /sys/fs/cgroup/cpuset rw,relatime - cgroup cgroup rw,cpuset
24 22 0:18 / /sys/fs/cgroup/cpu rw,relatime - cgroup cgroup rw,cpu
25 22 0:19 / /sys/fs/cgroup/cpuacct rw,relatime - cgroup cgroup rw,cpuacct
26 22 0:20 / /sys/fs/cgroup/memory rw,relatime - cgroup cgroup rw,memory
27 22 0:21 / /sys/fs/cgroup/devices rw,relatime - cgroup cgroup rw,devices
28 22 0:22 / /sys/fs/cgroup/freezer rw,relatime - cgroup cgroup rw,freezer
29 22 0:23 / /sys/fs/cgroup/blkio rw,relatime - cgroup cgroup rw,blkio
30 22 0:24 / /sys/fs/cgroup/perf_event rw,relatime - cgroup cgroup rw,perf_event
31 15 0:25 / /sys/fs/fuse/connections rw,relatime - fusectl none rw
32 15 0:6 / /sys/kernel/debug rw,relatime - debugfs none rw
33 15 0:10 / /sys/kernel/security rw,relatime - securityfs none rw
34 19 0:26 / /run/lock rw,nosuid,nodev,noexec,relatime - tmpfs none rw,size=5120k
35 19 0:27 / /run/shm rw,nosuid,nodev,relatime - tmpfs none rw
36 20 8:1 / /boot rw,relatime - ext4 /dev/sda1 rw,user_xattr,acl,barrier=1,data=ordered
37 19 0:28 / /run/rpc_pipefs rw,relatime - rpc_pipefs rpc_pipefs rw
38 16 0:29 / /proc/fs/nfsd rw,relatime - nfsd nfsd rw
39 20 0:30 / /tank rw,relatime - zfs tank rw,xattr
40 39 0:31 / /tank/Irina rw,relatime - zfs tank/Irina rw,xattr
41 39 0:32 / /tank/OpenNebula rw,relatime - zfs tank/OpenNebula rw,xattr
42 39 0:33 / /tank/biouml-shared rw,relatime - zfs tank/biouml-shared rw,xattr
-----------------------------------------------------------------------------------------------------------------
On VM: 
biouml@biouml-1:~$ cat /proc/self/mounts
rootfs / rootfs rw 0 0
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
udev /dev devtmpfs rw,relatime,size=10048264k,nr_inodes=2512066,mode=755 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
tmpfs /run tmpfs rw,nosuid,relatime,size=4022824k,nr_inodes=2514264,mode=755 0 0
/dev/disk/by-uuid/6854f07d-b063-4ce1-b33c-789050e6a10a / ext4 rw,relatime,errors=remount-ro,user_xattr,acl,barrier=1,data=ordered 0 0
none /sys/fs/fuse/connections fusectl rw,relatime 0 0
none /sys/kernel/debug debugfs rw,relatime 0 0
none /sys/kernel/security securityfs rw,relatime 0 0
none /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k,nr_inodes=2514264 0 0
none /run/shm tmpfs rw,nosuid,nodev,relatime,size=10057056k,nr_inodes=2514264 0 0
/dev/vda1 /boot ext2 rw,relatime,errors=continue 0 0
VirtFS /srv/shared 9p rw,sync,dirsync,relatime,trans=virtio,version=9p2000.L 0 0
rpc_pipefs /run/rpc_pipefs rpc_pipefs rw,relatime 0 0

biouml@biouml-1:~$ cat /proc/self/mountinfo
15 20 0:14 / /sys rw,nosuid,nodev,noexec,relatime - sysfs sysfs rw
16 20 0:3 / /proc rw,nosuid,nodev,noexec,relatime - proc proc rw
17 20 0:5 / /dev rw,relatime - devtmpfs udev rw,size=10048264k,nr_inodes=2512066,mode=755
18 17 0:11 / /dev/pts rw,nosuid,noexec,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=000
19 20 0:15 / /run rw,nosuid,relatime - tmpfs tmpfs rw,size=4022824k,nr_inodes=2514264,mode=755
20 1 253:2 / / rw,relatime - ext4 /dev/disk/by-uuid/6854f07d-b063-4ce1-b33c-789050e6a10a rw,errors=remount-ro,user_xattr,acl,barrier=1,data=ordered
21 15 0:16 / /sys/fs/fuse/connections rw,relatime - fusectl none rw
22 15 0:6 / /sys/kernel/debug rw,relatime - debugfs none rw
23 15 0:10 / /sys/kernel/security rw,relatime - securityfs none rw
24 19 0:17 / /run/lock rw,nosuid,nodev,noexec,relatime - tmpfs none rw,size=5120k,nr_inodes=2514264
25 19 0:18 / /run/shm rw,nosuid,nodev,relatime - tmpfs none rw,size=10057056k,nr_inodes=2514264
26 20 253:1 / /boot rw,relatime - ext2 /dev/vda1 rw,errors=continue
27 20 0:19 / /srv/shared rw,relatime - 9p VirtFS rw,sync,dirsync,trans=virtio,version=9p2000.L
28 19 0:20 / /run/rpc_pipefs rw,relatime - rpc_pipefs rpc_pipefs rw

Did you have a chance to rebuild kvm?

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max (mikhmv) wrote on 2012-04-20:

#21

Looks like, now VM is stable and works for long time under heavy load without problems.

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Serge Hallyn (serge-hallyn) wrote on 2012-04-23:

#22

Thanks, Max. We'll have to find the commits which fixed these and attempt to cherrypick them for an SRU.

Changed in qemu-kvm (Ubuntu):
status:	Incomplete → Triaged
tags:	added: fixed-upstream

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Daniel van Vugt (vanvugt) wrote on 2022-09-06:

#23

Ubuntu 12.04 is no longer supported.

Changed in qemu-kvm (Ubuntu):
status:	Triaged → Won't Fix

Ubuntu
qemu-kvm package

KVM is unstable: virtio bug

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Ubuntuqemu-kvm package

KVM is unstable: virtio bug

Bug Description

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Ubuntu
qemu-kvm package