Xen users - Oct 2012 - how to save xm dmesg into a file

Hi,all,
the dmesg have a ring buffer size that is only 16k, so when overflows, some
of the printk() messages get lost. SO could someone please give me a
solution how to save all log message to a file. I don''t have serial
port
and cannot use that method to save log on another machine.  Thanks!


_______________________________________________
Xen-users mailing list
Xen-users@lists.xen.org
http://lists.xen.org/xen-users

On Sat, 2012-10-27 at 13:36 -0400, Wei Kuang wrote:
> Hi,all,
> the dmesg have a ring buffer size that is only 16k, so when overflows,
> some of the printk() messages get lost. SO could someone please give
> me a solution how to save all log message to a file. I don''t have
> serial port and cannot use that method to save log on another machine.
> Thanks!
Check out /etc/{sysconfig,default}/xencommons where you can set
XENCONSOLED_TRACE="hv" which will cause xenconsoled to log hypervisor
log message to somewhere under /var/log/xen/ (possibly under
console/...)

You can also log PV guest consoles (="guest") or both
(="all").

Ian.

On Sat, 2012-10-27 at 13:36 -0400, Wei Kuang wrote:
> Hi,all,
> the dmesg have a ring buffer size that is only 16k, so when overflows,
> some of the printk() messages get lost. SO could someone please give
> me a solution how to save all log message to a file. I don''t have
> serial port and cannot use that method to save log on another machine.
> Thanks!
Check out /etc/{sysconfig,default}/xencommons where you can set
XENCONSOLED_TRACE="hv" which will cause xenconsoled to log hypervisor
log message to somewhere under /var/log/xen/ (possibly under
console/...)

You can also log PV guest consoles (="guest") or both
(="all").

Ian.

On Sat, 2012-10-27 at 13:36 -0400, Wei Kuang wrote:
> Hi,all,
> the dmesg have a ring buffer size that is only 16k, so when overflows,
> some of the printk() messages get lost. SO could someone please give
> me a solution how to save all log message to a file. I don''t have
> serial port and cannot use that method to save log on another machine.
> Thanks!
Check out /etc/{sysconfig,default}/xencommons where you can set
XENCONSOLED_TRACE="hv" which will cause xenconsoled to log hypervisor
log message to somewhere under /var/log/xen/ (possibly under
console/...)

You can also log PV guest consoles (="guest") or both
(="all").

Ian.