Martin Sivák has posted comments on this change.

Change subject: Add IO tunables support to updateVmPolicy
......................................................................


Patch Set 19:

(9 comments)

http://gerrit.ovirt.org/#/c/28715/19/tests/vmTests.py
File tests/vmTests.py:

Line 875:     def testBuildCmdLinePPC64(self):
Line 876:         self.assertBuildCmdLine(CONF_TO_DOMXML_PPC64)
Line 877: 
Line 878:     def _xml_sanitizer(self, text):
Line 879:         return re.sub(">[\t\n ]+<", "><", text).strip()
> this could be a module-private function. No big deal, can be extracted in a
I do not believe it is generic enough at this moment, so I would like to 
improve it in separate patch.
Line 880: 
Line 881:     def testUpdateVmPolicy(self):
Line 882:         with FakeVM() as machine:
Line 883:             dom = FakeDomain()


http://gerrit.ovirt.org/#/c/28715/19/vdsm/rpc/vdsmapi-schema.json
File vdsm/rpc/vdsmapi-schema.json:

Line 2348: # @VmDiskDeviceTuneLimits:
Line 2349: #
Line 2350: # Extra parameters for VM disk devices.
Line 2351: #
Line 2352: # @name:        #optional The name of the taget device
> typo: taRget
Done
Line 2353: #
Line 2354: # @path:        #optional The path of the taget device
Line 2355: #
Line 2356: # @guaranteed:  IO tune parameters - guranteed values


Line 2350: # Extra parameters for VM disk devices.
Line 2351: #
Line 2352: # @name:        #optional The name of the taget device
Line 2353: #
Line 2354: # @path:        #optional The path of the taget device
> ditto
Done
Line 2355: #
Line 2356: # @guaranteed:  IO tune parameters - guranteed values
Line 2357: #
Line 2358: # @maximum:     IO tune parameters - the hard limits


Line 2352: # @name:        #optional The name of the taget device
Line 2353: #
Line 2354: # @path:        #optional The path of the taget device
Line 2355: #
Line 2356: # @guaranteed:  IO tune parameters - guranteed values
> typo: guAranteed
Done
Line 2357: #
Line 2358: # @maximum:     IO tune parameters - the hard limits
Line 2359: #
Line 2360: # Since: 4.15.0


http://gerrit.ovirt.org/#/c/28715/19/vdsm/virt/vm.py
File vdsm/virt/vm.py:

Line 3682:     def _ioTuneValuesToDom(self, values, dom):
Line 3683:         ops = ["total", "read", "write"]
Line 3684:         units = ["bytes", "iops"]
Line 3685: 
Line 3686:         for op, unit in itertools.product(ops, units):
> Nice, but how about an explicit tuple of constants? do you plan to add more
Done
Line 3687:             name = op + "_" + unit + "_sec"
Line 3688:             if name in values and values[name] >= 0:
Line 3689:                 el = XMLElement(name)
Line 3690:                 el.appendTextNode(str(values[name]))


Line 3702: 
Line 3703:     def _ioTuneDomToValues(self, dom):
Line 3704:         values = {}
Line 3705: 
Line 3706:         # Parse device name
> redundant comment
Done
Line 3707:         if dom.hasAttribute("name"):
Line 3708:             values["name"] = dom.getAttribute("name")
Line 3709: 
Line 3710:         # Parse device path


Line 3706:         # Parse device name
Line 3707:         if dom.hasAttribute("name"):
Line 3708:             values["name"] = dom.getAttribute("name")
Line 3709: 
Line 3710:         # Parse device path
> ditto
Done
Line 3711:         if dom.hasAttribute("path"):
Line 3712:             values["path"] = dom.getAttribute("path")
Line 3713: 
Line 3714:         # Parse guranteed and maximum ioTune limits


Line 3710:         # Parse device path
Line 3711:         if dom.hasAttribute("path"):
Line 3712:             values["path"] = dom.getAttribute("path")
Line 3713: 
Line 3714:         # Parse guranteed and maximum ioTune limits
> ditto
Done
Line 3715:         els = dom.getElementsByTagName("guaranteed")
Line 3716:         if els:
Line 3717:             values["guaranteed"] = {}
Line 3718:             self._collectInnerElements(els[0], values["guaranteed"])


Line 3871:                 if ("path" in limit_object
Line 3872:                         and limit_object["path"] in ioTuneByPath):
Line 3873:                     ioTuneByPath[limit_object["path"]] = new_tune
Line 3874: 
Line 3875:                 metadata_modified = True
> Most, if not all, of this code seems to not use self, and since vm.py is al
Done, I created vmtune.py and put most of the code there.
Line 3876: 
Line 3877:             del params['ioTune']
Line 3878: 
Line 3879:         # Check remaining fields in params and report the list of 
unsupported


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Gerrit-MessageType: comment
Gerrit-Change-Id: I4ed108fbb2bf9d9af80577b2905242bf9f8c4221
Gerrit-PatchSet: 19
Gerrit-Project: vdsm
Gerrit-Branch: master
Gerrit-Owner: Martin Sivák <[email protected]>
Gerrit-Reviewer: Dan Kenigsberg <[email protected]>
Gerrit-Reviewer: Federico Simoncelli <[email protected]>
Gerrit-Reviewer: Francesco Romani <[email protected]>
Gerrit-Reviewer: Martin Sivák <[email protected]>
Gerrit-Reviewer: Nir Soffer <[email protected]>
Gerrit-Reviewer: [email protected]
Gerrit-Reviewer: oVirt Jenkins CI Server
Gerrit-HasComments: Yes
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