[libvirt-users] [Qemu-devel] Qcow2

[arun.sasi1 at wipro.com]

Hello Stefan,

I couldn't find any error when I do consistency check on the image file...

What can be the reason for not starting the VM.

Here I am suspecting when the base server go for reboot lesser image will start and it cached and larger image will take more time to create the cache...

Was this correct... if yes could you please help me how to increase the caching...


Thanks,
-Arun


-----Original Message-----
From: Stefan Hajnoczi [mailto:stefanha at gmail.com] 
Sent: Thursday, May 19, 2011 1:53 PM
To: Arun Sasi V (WI01 - Manage IT)
Cc: stefanha at linux.vnet.ibm.com; qemu-devel at nongnu.org; libvirt-users at redhat.com
Subject: Re: [Qemu-devel] Qcow2

On Wed, May 18, 2011 at 7:03 PM,  <arun.sasi1 at wipro.com> wrote:
> I was getting only the problem with audio(only Warning and error log) when I
> checking the logs
>
> {snip}
>
> LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
> HOME=/root USER=root LOGNAME=root TMPDIR=/tmp/root-tmp.2af1b17/files
> /usr/bin/kvm -S -M pc -m 512 -smp 4 -name sy0005embinf02 -uuid
> 9ddfc4b5-51bc-c3e9-3aea-59101bc15174 -monitor pty -pidfile
> /var/run/libvirt/qemu//sy0005embinf02.pid -boot c -drive
> file=,if=ide,media=cdrom,index=2 -drive
> file=/var/lib/libvirt/images/sy0005embinf02.img,if=virtio,index=0,boot=on
> -drive file=/var/lib/libvirt/images/sy0005embinf02_vdb.img,if=virtio,index=1
> -net nic,macaddr=00:16:36:1d:67:9e,vlan=0,model=virtio -net
> tap,fd=23,script=,vlan=0,ifname=vnet2 -serial pty -parallel none -usb -vnc
> 127.0.0.1:2 -k en-us -soundhw es1370
>
>
>
> cont
>
> oss: Could not initialize DAC
>
> oss: Failed to open `/dev/dsp'
>
> oss: Reason: No such file or directory
>
> oss: Could not initialize DAC
>
> oss: Failed to open `/dev/dsp'
>
> oss: Reason: No such file or directory
>
> audio: Failed to create voice `es1370.dac2'
>
> oss: Could not initialize ADC
>
> oss: Failed to open `/dev/dsp'
>
> oss: Reason: No such file or directory
>
> oss: Could not initialize ADC
>
> oss: Failed to open `/dev/dsp'
>
> oss: Reason: No such file or directory
>
> audio: Failed to create voice `es1370.adc'

These audio messages look like warnings, not fatal errors, but I am
not sure.  I would view the VM details using virt-manager and remove
the sound card device from the VM if you don't need it.

> {snip}

There were no further error messages indicating that starting the VM failed?

>
>
>
> When it was not booting up I just given full permission
>
> -rw-r--r-- 1 root root 384M 2010-10-06 08:01 sy0005embinf01.img.gz
>
> -rw-rw-rw- 1 root root   45 2010-10-06 15:43 SLBTemplate.img
>
> -rw-r--r-- 1 root root   45 2010-10-14 11:44 sy0005embapp01.img
>
> -rw-r--r-- 1 root root 412K 2011-01-08 19:54 sy0005embinf02_vdd.img
>
> -rwxrwxrwx 1 root root 609G 2011-05-18 23:41 sy0005embinf02_vdb.img
>
> -rw-rw-rw- 1 root root  41G 2011-05-18 23:51 sy0005embinf02.img
>
> -rw-rw-rw- 1 root root 2.0G 2011-05-18 23:52 sy0005embinf01.img
>
> -rw-rw-rw- 1 root root 3.8G 2011-05-18 23:52 sy0005embldap01.img
>
>
>
> Note: it was not working after the full permission too...
>
>
>
> Was there any caching problem after the reboot...???

You mentioned using QCOW2.  Use "qemu-img check
sy0005embinf02_vdb.img" to run a consistency check on the image file.
There should be no fatal errors.

Stefan