Hi,
I add the Xen Scheduler APIs to xenDaemonDriver.
- xenDaemonGetSchedulerType
- xenDaemonGetSchedulerParameters
- xenDaemonSetSchedulerParameters
We will have the following improvements by this patch:
1) xenDaemonDriver of Schedulr is usable
when xenHypervisorDriver failed.
2) Show the Scheduler information with non-root user.
3) Set the Scheduler parameters for inactive domain.
(Unfortunately not right now, because we need this fix.
http://lists.xensource.com/archives/html/xen-devel/2008-03/msg00301.html)
And I have a few things to note:
- Currently, implemented for the Xen-credit scheduler only.
- xenDaemonGetSchedulerType is supported in xendConfigVersion >= 4,
because we can get "xen_scheduler" from xend after Cset13394 of
Xen (i.e. xendConfigVersion is four or later).
- For the above reason, xenDaemonGetSchedulerParameters and
xenDaemonSetSchedulerParameters are also supported in
xendConfigVersion >= 4, because they are using xenDaemonGetSchedulerType
to get the scheduler type.
- At xenDaemonSetSchedulerParameters, there are restrictions
which depends on Xend-version.
a) We cannot set the "cap" value by xend before Cset15476 of Xen,
because xend does not support the "cap" value
at xend/server/SrvDomain.py
b) We cannot set the scheduler parameters for inactive domain
without the following patch.
http://lists.xensource.com/archives/html/xen-devel/2008-03/msg00301.html
If the above patch is committed, this API will be available
for inactive domain.
Regards,
Saori Fukuta
Attachment:
ROcheck_at_virDomainSetSchedulerParameters.patch
Description: Binary data
Attachment:
xend_internal_add_scheduler.patch
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