Lucas Meneghel Rodrigues wrote:
On Sat, 2009-05-16 at 10:38 +0200, Hans de Bruin wrote:
Marcelo Tosatti wrote:
On Wed, May 13, 2009 at 12:20:26AM +0200, Hans de Bruin wrote:
Hans de Bruin wrote:
Staring to vms simultaneously end in crash
linux 30-rc5
kvm-qemu kvm-85-378-g143eb2b
proc AMD dualcore
vm's like:
#!/bin/sh
n=10
cdrom=/iso/server2008x64.iso
drive=file=/kvm/disks/vm$n
mem=1024
cpu=qemu64
vga=std
mac=52:54:00:12:34:$n
bridge=br1
qemu-system-x86_64 -cdrom $cdrom -drive $drive -m $mem -cpu $cpu -vga
$vga -net nic,macaddr=$mac -net tap,script=/etc/qemu/$bridge
another dmesg:
Hans,
The oopses below point to the possibility of a hardware problem,
similar to:
https://bugzilla.redhat.com/show_bug.cgi?id=480779
Can you please rule it out with memtest86?
I ran memtest for 11 hours and it completed 4.7 passes with no problems.
But then memtest is about cpu and memmory interaction. If the problem is
disk related there is also disk/chipset/dma and memmory interaction. I
could degrade my system by turning dma on disk io off, or i could have a
closer look at kvm-autotest.
Hans:
There is a memory test designed to stress disk/chipset/dma interaction.
I made an implementation of it on autotest, the test module is called
dma_memtest:
http://autotest.kernel.org/browser/trunk/client/tests/dma_memtest/dma_memtest.py
[09:09:47 INFO ] Test finished after 1 iterations.
Memory test passed.
[09:09:48 DEBUG] Running 'grep MemTotal /proc/meminfo'
[09:09:48 DEBUG] Running 'rpm -qa'
[09:09:49 INFO ] GOOD dma_memtest dma_memtest
timestamp=1243408189 localtime=May 27 09:09:49 completed
successfully
[09:09:49 DEBUG] Persistent state variable __group_level now set to 1
[09:09:49 INFO ] END GOOD dma_memtest dma_memtest
timestamp=1243408189 localtime=May 27 09:09:49
[09:09:49 DEBUG] Dropping caches
[09:09:49 DEBUG] Running 'sync'
[09:09:51 DEBUG] Running 'sync'
[09:09:51 DEBUG] Running 'echo 3 > /proc/sys/vm/drop_caches'
[09:09:52 DEBUG] Persistent state variable __group_level now set to 0
[09:09:52 INFO ] END GOOD ---- ---- timestamp=1243408192
localtime=May 27 09:09:52
Well that looks good. The web page talks about forcing the system to
swap. That never happend swap usage is still 0 bytes. I installed
autotest on the same lv (3 disk stripe) as the vmdisks.
--
Hans
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