From: Guido Winkelmann <guido-kvml@thisisnotatest.de>
To: Brian Jackson <iggy@theiggy.com>
Cc: kvm@vger.kernel.org
Subject: Re: I/O errors in guest OS after repeated migration
Date: Wed, 17 Oct 2012 17:45:14 +0200 [thread overview]
Message-ID: <1584623.O3dV3x1EMv@pc10> (raw)
In-Reply-To: <201210161244.28183.iggy@theiggy.com>
Am Dienstag, 16. Oktober 2012, 12:44:27 schrieb Brian Jackson:
> On Tuesday, October 16, 2012 11:33:44 AM Guido Winkelmann wrote:
> > The commandline, as generated by libvirtd, looks like this:
> >
> > LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
> > QEMU_AUDIO_DRV=none /usr/bin/qemu-kvm -S -M pc-0.15 -enable-kvm -m 1024
> > -smp 1,sockets=1,cores=1,threads=1 -name migratetest2 -uuid
> > ddbf11e9-387e-902b-4849-8c3067dc42a2 -nodefconfig -nodefaults -chardev
> > socket,id=charmonitor,path=/var/lib/libvirt/qemu/migratetest2.monitor,serv
> > e
> > r,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc
> > -no-reboot -no- shutdown -device
> > piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive
> > file=/data/migratetest2_system,if=none,id=drive-virtio-
> > disk0,format=qcow2,cache=none -device virtio-blk-
> > pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-
> > disk0,bootindex=1 -drive file=/data/migratetest2_data-1,if=none,id=drive-
> > virtio-disk1,format=qcow2,cache=none -device virtio-blk-
> > pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk1,id=virtio-disk1 -
> > netdev tap,fd=27,id=hostnet0,vhost=on,vhostfd=28 -device virtio-net-
> > pci,netdev=hostnet0,id=net0,mac=02:00:00:00:00:0c,bus=pci.0,addr=0x3 -vnc
> > 127.0.0.1:2,password -k de -vga cirrus -incoming tcp:0.0.0.0:49153 -device
> > virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6
>
> I see qcow2 in there. Live migration of qcow2 was a new feature in 1.0. Have
> you tried other formats or different qemu/kvm versions?
I tried the same thing with a raw image file instead of qcow2, and the problem
still happens. From the /var/log/messages of the guest:
Oct 17 17:10:34 localhost sshd[2368]: nss_ldap: could not search LDAP server -
Server is unavailable
Oct 17 17:10:39 localhost kernel: [ 126.800075] eth0: no IPv6 routers present
Oct 17 17:10:52 localhost kernel: [ 140.335783] Clocksource tsc unstable
(delta = -70265501 ns)
Oct 17 17:12:04 localhost /O error on device vda1, logical block 1858765
Oct 17 17:12:04 localhost kernel: [ 212.070584] Buffer I/O error on device
vda1, logical block 1858766
Oct 17 17:12:04 localhost kernel: [ 212.070587] Buffer I/O error on device
vda1, logical block 1858767
Oct 17 17:12:04 localhost kernel: [ 212.070589] Buffer I/O error on device
vda1, logical block 1858768
Oct 17 17:12:04 localhost kernel: [ 212.070592] Buffer I/O error on device
vda1, logical block 1858769
Oct 17 17:12:04 localhost kernel: [ 212.070595] Buffer I/O error on device
vda1, logical block 1858770
Oct 17 17:12:04 localhost kernel: [ 212.070597] Buffer I/O error on device
vda1, logical block 1858771
Oct 17 17:12:04 localhost kernel: [ 212.070600] Buffer I/O error on device
vda1, logical block 1858772
Oct 17 17:12:04 localhost kernel: [ 212.070602] Buffer I/O error on device
vda1, logical block 1858773
Oct 17 17:12:04 localhost kernel: [ 212.070605] Buffer I/O error on device
vda1, logical block 1858774
Oct 17 17:12:04 localhost kernel: [ 212.070607] Buffer I/O error on device
vda1, logical block 1858775
Oct 17 17:12:04 localhost kernel: [ 212.070610] Buffer I/O error on device
vda1, logical block 1858776
Oct 17 17:12:04 localhost kernel: [ 212.070612] Buffer I/O error on device
vda1, logical block 1858777
Oct 17 17:12:04 localhost kernel: [ 212.070615] Buffer I/O error on device
vda1, logical block 1858778
Oct 17 17:12:04 localhost kernel: [ 212.070617] Buffer I/O error on device
vda1, logical block 1858779
(I was writing a large file at the time, to make sure I actually catch I/O
errors as they happen)
Guido
next prev parent reply other threads:[~2012-10-17 15:58 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-16 16:33 I/O errors in guest OS after repeated migration Guido Winkelmann
2012-10-16 17:44 ` Brian Jackson
2012-10-17 11:54 ` Guido Winkelmann
2012-10-17 18:24 ` Brian Jackson
2012-10-17 15:45 ` Guido Winkelmann [this message]
2012-10-17 18:25 ` Brian Jackson
2012-10-18 15:50 ` Guido Winkelmann
2012-10-18 16:05 ` Avi Kivity
2012-10-19 12:55 ` Guido Winkelmann
2012-10-29 11:29 ` Stefan Hajnoczi
2012-11-06 11:07 ` Guido Winkelmann
2012-11-08 8:23 ` Stefan Hajnoczi
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