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Old 02-06-2009, 07:44 PM
Radek Hladik
Default Virt-manager and qemu logging

Cole Robinson napsal(a):

Radek Hladik wrote:

I am using virt-manager+libvirt+kvmqemu and I noticed today that when
virt-manager is running and polling VMs stats libvirt log in
/var/log/libivrt/qemu/vmname is filling with messages like

info blockstats
ide0-hd0: rd_bytes=16710828032 <http://www.snapanumber.com/> <http://www.snapanumber.com/>
wr_bytes=2248787148 <http://www.snapanumber.com/> <http://www.snapanumber.com/>8


ide1-cd0: rd_bytes=936448 wr_bytes=0 rd_operations=456 wr_operations=0
floppy0: rd_bytes=0 wr_bytes=0 rd_operations=0 wr_operations=0
sd0: rd_bytes=0 wr_bytes=0 rd_operations=0 wr_operations=0

is this needed for virt-manager to poll the info or have I only
forgotten to disable some debugging somewhere? I tried to change loging
parameter in libvirt.conf but that had no effect (I didnt restart the
VMs though).

If disk polling is enabled in virt-manager, those messages will be
logged by libvirt. They are coming from the qemu monitor every time disk
stats info is requested. As far as I know there is no way to disable
logging these messages, though it would certainly be handy since they
will quickly take up a lot of room if virt-manager is left running.

You can disable disk polling in virt-manager via Edit->Preferences

- Cole

I left virt-manager running for about a day and it grew to cca 100MB per
VM. I will probably set up more drastic rotation or disable the logging
at all somehow...

Thanks for your answer.


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