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Re: [Libvir] Bug in the virDomainGetInfo() API of libvirt 0.1.9 with Xen 3.0.3



Daniel P. Berrange a écrit :
On Fri, Jan 12, 2007 at 11:47:16AM +0100, Philippe Berthault wrote:
The maxMem field of the virDomainInfo structure is given in bytes instead of Kbytes when the domain is 0 (Domain-0). With others domains, the value of maxMem is correct.

Exemple with virsh:
 On a system with 4 GB memory, virsh reports:
 # virsh dominfo 0
 ...
 Max memory: 4294967292 kB

With the same libvirt version 0.1.9 but with an older Xen (not 3.0.3), the maxMem value of Domain-0 is correct.

This sounds like a bug in Xen, rather than a bug in libvirt - we don't
have any special handling for Domain-0 - we're just passing back through
whatever data we get from Xen.

Dan.
This problem seems to be caused by a missing initialization (in Xen or libvirt ? to be determined) because after setting the system memory size by using the "xm mem-max" command on Domain-0, the Max memory value returned by virsh is correct and reflect the value passed to the xm command.

This problem of incoherent maxMem value on Domain-0 has been detected after a system reboot.


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