Xen devel - Nov 2007 - [PATCH][TOOLS] libxc: make error path more verbose

Hi!

Attached patch makes qemu''s output more verbose on failures.

Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>

The qemu process seems to leak memory by performing more mmap() calls than 
munmap()''s. When a HVM guest with a 12GB image runs fsck, then the
guest
window disappears when the qemu process dies.

Then /var/log/qemu-dm-<domid>.log shows this:

I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
xc_map_foreign_batch error 12

With the attached patch you see this:

I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
xc_map_foreign_batch: mmap failed: Cannot allocate memory
xc_map_foreign_batch error 12

For short: The patch makes it easier to figure out
when you triggered the resource exhausting bug.



-- 
AMD Saxony, Dresden, Germany
Operating System Research Center

Legal Information:
AMD Saxony Limited Liability Company & Co. KG
Sitz (Geschäftsanschrift):
   Wilschdorfer Landstr. 101, 01109 Dresden, Deutschland
Registergericht Dresden: HRA 4896
vertretungsberechtigter Komplementär:
   AMD Saxony LLC (Sitz Wilmington, Delaware, USA)
Geschäftsführer der AMD Saxony LLC:
   Dr. Hans-R. Deppe, Thomas McCoy


_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel