March 2014 - Devel - Ovirt List Archives

[Engine-devel] attn ui devs: why do we use inputs for labels?

by Greg Sheremeta

Hi fellow UI developers, Can someone explain why we are using "input type=text" fields to render labels? (see screenshot[1]) This seems like bad practice for a few reasons: * it's not semantic HTML * inputs do not have variable sizing like text. They cannot shrink down to the size of the text, which makes positioning difficult. * common browser extensions such as LastPass can be confused (see screenshot[1] -- lastpass sees these labels for the text fields they are, and attempts to help the user fill them in -- that's what those gray asterisks are. Very confusing.) I'd like to pursue correcting this, if possible. Thanks, Greg [1] http://i.imgur.com/AweOhJe.png Greg Sheremeta Red Hat, Inc. Sr. Software Engineer, RHEV Cell: 919-807-1086 gshereme(a)redhat.com

10 years, 1 month

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[Engine-devel] [ANN] oVirt Node ISO for oVirt 3.4 RC 2

by Fabian Deutsch

--=-XfnQPOo0nEpleRZqDZq2 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hey, let me announce a respun oVirt Node for oVirt 3.4 RC 2. After some time this is finally available from where it belongs: http://resources.ovirt.org/releases/3.4.0_pre/iso/ovirt-node-iso-3.0.4-1.0.= 201401291204.vdsm34rc2.el6.iso There are also older releases of oVirt Node, in case that the latest version has unknown regressions. http://resources.ovirt.org/releases/3.4.0_pre/iso/ Please let us known about issues you run into. You can also let us know when Node "Just Works (TM)". Greetings fabian --=-XfnQPOo0nEpleRZqDZq2 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.15 (GNU/Linux) iQIcBAABAgAGBQJTIykgAAoJEC9+uOgSHVGUnX4P/2TUR2eMvhscP0KSgL9T5hmV 23+zzQVc8xIVSAY2ko+GLlaYsZ9Ui7C5fB1mDOx0zjUQ8qqwsDvBzkTDJAX3sFhD HzIjfcF97CPKdRVbpT6qrFVyHew4dR+CloJT5iuxiidO3dXlDGvUarByfeYZ97cJ /T1BDx4Gi3vxx0hVG0/rzDZvqmrYa34SlbM9B7mP1OhVwU2ZgfD0+KjrnaLbeGUJ Y2jh//Zr9g+0mzGWTdjEZ1dlR4XXf6qLG53r49cX00zkC66BOLeaBoI67ngD6ah5 9Qj2zDhgN98TvF8QWQk6clzFFDuqTwX2fKbNnjy/6khH1xg9S95Vxn8f3o3HPtS0 CSh1mg+fs3EoMWj8W2kYrmVjs6CkXa0YI+pAAGacKkInLzuMgvTYUEDNYbAKdTFu kNz+Eps6ay8wWXHgR9QOXCakBfGliWcIVcR7CbwGbB+lsWrh5/l3eGKY0KzTaDR8 q/ieq6O6F7Uik2N+J347Sh9fyobUftaa75cbfQS9bfF7n4F44PRDJeYUjEkpZEo6 mRUhdi3OWlP+kergTaDst68NsR91F1P6FsO9cc3QlejmjH7ZpmtQDsqAtRDMvoCG 25Oqj5Rq425GOx9OfMwvRpZ1N8PjiPLxP4wLLaR6bgyw4EG4VirugPRImtfCf+4d Bd+qMPHfWkLunO8mioec =DTiV -----END PGP SIGNATURE----- --=-XfnQPOo0nEpleRZqDZq2--

10 years, 1 month

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[Engine-devel] Dependency checking tool

by Rohit Agrawal

hi, i am now trying to make some changes in ovirt engine code for which i neede to see the dependency. As there are many pom.xml files. Is there any dependency tool to see all the dependency. -- Regards, rohit

10 years, 2 months

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Re: [Engine-devel] oVirt Engine 3.2 ReST API

by Omer Frenkel

------=_Part_25735698_241434152.1394606717688 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit ----- Original Message ----- > From: "Vikas Kokare" <vikaskokare(a)gmail.com> > To: "Omer Frenkel" <ofrenkel(a)redhat.com> > Sent: Wednesday, March 12, 2014 5:24:11 AM > Subject: Re: [Engine-devel] oVirt Engine 3.2 ReST API > The problem is this situation is not obvious from the documentation. The data > center field on the cluster is defined as required during creation and > non-updatable. How can that be explained? So its a question not just for > this example but for other entity associations too. i guess this is a bug in the documentation, this field is editable in this specific case only. can you open a bug? > On Tue, Mar 11, 2014 at 5:56 PM, Omer Frenkel < ofrenkel(a)redhat.com > wrote: > > > From: "Vikas Kokare" < vikaskokare(a)gmail.com > > > > > > > To: engine-devel(a)ovirt.org > > > > > > Sent: Tuesday, March 11, 2014 12:11:41 PM > > > > > > Subject: [Engine-devel] oVirt Engine 3.2 ReST API > > > > > > As per the API documentation, the host cluster element "data_center id=" > > > is > > > both required at creation(exclamation in a triangle) as well as > > > non-updatable(lock sign). Is it right to consider that, not only is this > > > a > > > required element, but it can't be changed and deleting(disassociation) is > > > out of question? > > > > > > We have a RHEVM environment, where one such host cluster was created > > > initially being associated to a data center. Later someone changed > > > something, that resulted in the specific host cluster having no > > > "data_center" element on it. Could it be that the association was > > > deleted, > > > or that the data_center itself was deleted, but the system didn't honor > > > referential integrity, that it was being referred by other objects? > > > > > > _______________________________________________ > > > > > > Engine-devel mailing list > > > > > > Engine-devel(a)ovirt.org > > > > > > http://lists.ovirt.org/mailman/listinfo/engine-devel > > > > > it is possible to remove a data-center, even if it has clusters, > > > as long there is no usage in the storage (vms, templates..) > > > this makes the clusters to have no data-center, > > > and then the cluster can be joined to a different data center > > (new/existing) > ------=_Part_25735698_241434152.1394606717688 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <html><body><div style=3D"font-family: times new roman, new york, times, se= rif; font-size: 12pt; color: #000000"><div> </div><div> </div><hr id= =3D"zwchr"><blockquote style=3D"border-left:2px solid #1010FF;margin-left:5= px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-de= coration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;" data-= mce-style=3D"border-left: 2px solid #1010FF; margin-left: 5px; padding-left= : 5px; color: #000; font-weight: normal; font-style: normal; text-decoratio= n: none; font-family: Helvetica,Arial,sans-serif; font-size: 12pt;">From= : "Vikas Kokare" <vikaskokare(a)gmail.com> To: "Omer Fren= kel" <ofrenkel(a)redhat.com> Sent: Wednesday, March 12, 2014 = 5:24:11 AM Subject: Re: [Engine-devel] oVirt Engine 3.2 ReST API<= br><div> </div><div dir=3D"ltr">The problem is this situation is not obv= ious from the documentation. The data center field on the cluster is define= d as required during creation and non-updatable. How can that be explained?= So its a question not just for this example but for other entity associati= ons too. </div></blockquote><div>i guess this is a bug in the documentat= ion, </div><div>this field is editable in this specific case only. </= div><div>can you open a bug? </div><blockquote style=3D"border-left:2px = solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:norma= l;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-s= erif;font-size:12pt;" data-mce-style=3D"border-left: 2px solid #1010FF; mar= gin-left: 5px; padding-left: 5px; color: #000; font-weight: normal; font-st= yle: normal; text-decoration: none; font-family: Helvetica,Arial,sans-serif= ; font-size: 12pt;"><div class=3D"gmail_extra"><div> </div><div class=3D= "gmail_quote">On Tue, Mar 11, 2014 at 5:56 PM, Omer Frenkel <<a href=3D"mailto:ofrenkel@redhat.com" target=3D"_blank" data-mce-hr= ef=3D"mailto:ofrenkel@redhat.com">ofrenkel(a)redhat.com</a>> wrote:= <blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-lef= t:1px #ccc solid;padding-left:1ex" data-mce-style=3D"margin: 0 0 0 .8ex; bo= rder-left: 1px #ccc solid; padding-left: 1ex;"><div><div style=3D"font-size= :12pt;font-family:times new roman,new york,times,serif" data-mce-style=3D"f= ont-size: 12pt; font-family: times new roman,new york,times,serif;"><div><b= r></div><div> </div><hr><blockquote style=3D"padding-left:5px;font-size:= 12pt;font-style:normal;margin-left:5px;font-family:Helvetica,Arial,sans-ser= if;text-decoration:none;font-weight:normal;border-left:2px solid #1010ff" d= ata-mce-style=3D"padding-left: 5px; font-size: 12pt; font-style: normal; ma= rgin-left: 5px; font-family: Helvetica,Arial,sans-serif; text-decoration: n= one; font-weight: normal; border-left: 2px solid #1010ff;">From: "Vi= kas Kokare" <<a href=3D"mailto:vikaskokare@gmail.com" target=3D"_blank" = data-mce-href=3D"mailto:vikaskokare@gmail.com">vikaskokare(a)gmail.com</a>&gt= ; To: <a href=3D"mailto:engine-devel@ovirt.org" target=3D"_blank"= data-mce-href=3D"mailto:engine-devel@ovirt.org">engine-devel(a)ovirt.org</a>= Sent: Tuesday, March 11, 2014 12:11:41 PM Subject: [En= gine-devel] oVirt Engine 3.2 ReST API<div class=3D""> <div> </div><di= v dir=3D"ltr"><div>As per the API documentation, the host cluster element "= data_center id=3D" is both required at creation(exclamation in a triangle) = as well as non-updatable(lock sign). Is it right to consider that, not only= is this a required element, but it can't be changed and deleting(disassoci= ation) is out of question? </div>We have a RHEVM environment, where = one such host cluster was created initially being associated to a data cent= er. Later someone changed something, that resulted in the specific host clu= ster having no "data_center" element on it. Could it be that the associatio= n was deleted, or that the data_center itself was deleted, but the system d= idn't honor referential integrity, that it was being referred by other obje= cts? </div> </div>_______________________________________________ = Engine-devel mailing list <a href=3D"mailto:Engine-devel@ovirt.org" targ= et=3D"_blank" data-mce-href=3D"mailto:Engine-devel@ovirt.org">Engine-devel@= ovirt.org</a> <a href=3D"http://lists.ovirt.org/mailman/listinfo/engine-= devel" target=3D"_blank" data-mce-href=3D"http://lists.ovirt.org/mailman/li= stinfo/engine-devel">http://lists.ovirt.org/mailman/listinfo/engine-devel</= a> </blockquote><div> </div><div>it is possible to remove a data-cent= er, even if it has clusters, </div><div>as long there is no usage in the= storage (vms, templates..) </div><div>this makes the clusters to have n= o data-center, </div><div>and then the cluster can be joined to a differ= ent data center (new/existing) </div></div></div></blockquote></div> = </div></blockquote><div> </div></div></body></html> ------=_Part_25735698_241434152.1394606717688--

10 years, 2 months

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[Engine-devel] Consider iowait add into usage CPU percentage

by Liao, Chuan (Jason Liao, HPservers-Core-OE-PSC)

--_000_B63C858E777679458338A30A991BB524015C66EBG1W3780americas_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi All, On engine core, The usage CPU percentage is calculated by %sys + %usr class VdsBrokerObjectsBuilder function updateVDSStatisticsData vds.setCpuSys(AssignDoubleValue(xmlRpcStruct, VdsProperties.cpu_sys)); vds.setCpuUser(AssignDoubleValue(xmlRpcStruct, VdsProperties.cpu_us= er)); if (vds.getCpuSys() !=3D null && vds.getCpuUser() !=3D null) { vds.setUsageCpuPercent((int) (vds.getCpuSys() + vds.getCpuUser(= ))); } On vdsm, The %sys, %usr and %idle is calculated like below workflow, class API function getStats decStats =3D self._cif._hostStats.get() class clientIF function __init__ self._hostStats =3D sampling.HostStatsThread(log=3Dlog) self._hostStats.start() class HostStatsThread function get hs0, hs1 =3D self._samples[0], self._samples[-1] ... jiffies =3D (hs1.totcpu.user - hs0.totcpu.user) % (2 ** = 32) stats['cpuUser'] =3D jiffies / interval / self._ncpus jiffies =3D (hs1.totcpu.sys - hs0.totcpu.sys) % (2 ** 32) stats['cpuSys'] =3D jiffies / interval / self._ncpus stats['cpuIdle'] =3D max(0.0, 100.0 - stats['cpuUser'] - stats['cpu= Sys']) class HostSample function __init__ self.totcpu =3D TotalCpuSample() class TotalCpuSample function __init__ self.user, userNice, self.sys, self.idle =3D \ map(int, file('/proc/stat').readline().split()[1:5]) self.user +=3D userNice Question1: Why stats['cpuIdle'] do not use the sampling data totcpu.idle fo= r calculating? Question2: There is another data named iowait in /proc/stat, do we need to = consider add this into usage CPU percentage for calculating? Best Regards, Jason Liao --_000_B63C858E777679458338A30A991BB524015C66EBG1W3780americas_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr= osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" xmlns=3D"http:= //www.w3.org/TR/REC-html40"> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"= > <meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang=3D"ZH-CN" link=3D"#0563C1" vlink=3D"#954F72" style=3D"text-justi= fy-trim:punctuation"> <div class=3D"WordSection1"> Hi All,<o:p></o:p> <o:p> </o:p> On engine core, The usage CPU perce= ntage is calculated by %sys + %usr<o:p></o:p> <o:p> </o:p> class VdsBrokerObjectsBuilder <o:p></o:p> function updateVDSStatisticsData<o:= p></o:p> <spa= n lang=3D"EN-US" style=3D"font-family:"HP Simplified","sans-= serif"">vds.setCpuSys(AssignDoubleValue(xmlRpcStruct, VdsProperties.cp= u_sys));<o:p></o:p>      &nbsp= ;  vds.setCpuUser(AssignDoubleValue(xmlRpcStruct, VdsProperties.cpu_us= er));<o:p></o:p>      &nbsp= ;  if (vds.getCpuSys() !=3D null && vds.getCpuUser() !=3D null= ) {<o:p></o:p>      &nbsp= ;      vds.setUsageCpuPercent((int) (vds.getCpuSys= () + vds.getCpuUser()));<o:p></o:p>      &nbsp= ;  }<o:p></o:p> <o:p> </o:p> On vdsm, The %sys, %usr and %idle i= s calculated like below workflow,<o:p></o:p> <o:p> </o:p> class API<o:p></o:p> function getStats<o:p></o:p>= <spa= n lang=3D"EN-US" style=3D"font-family:"HP Simplified","sans-= serif"">decStats =3D self._cif._hostStats.get()<o:p></o:p> class clientIF<o:p></o:p></p= > function __init__<o:p></o:p>=      &nbsp= ;             s= elf._hostStats =3D sampling.HostStatsThread(log=3Dlog)<o:p></o:p></p= >      &nbsp= ;  self._hostStats.start()<o:p></o:p> class HostStatsThread<o:p></o:p></s= pan> function get<o:p></o:p>      &nbsp= ;             h= s0, hs1 =3D self._samples[0], self._samples[-1]<o:p></o:p>      &nbsp= ;             &= #8230;<o:p></o:p>      &nbsp= ;             j= iffies =3D (hs1.totcpu.user - hs0.totcpu.user) % (2 ** 32)<o:p></o:p></span= >      &nbsp= ;  stats['cpuUser'] =3D jiffies / interval / self._ncpus<o:p></o:p></s= pan>      &nbsp= ;  jiffies =3D (hs1.totcpu.sys - hs0.totcpu.sys) % (2 ** 32)<o:p></o:p= >      &nbsp= ;  stats['cpuSys'] =3D jiffies / interval / self._ncpus<o:p></o:p></sp= an>      &nbsp= ;  stats['cpuIdle'] =3D max(0.0, 100.0 - stats['cpuUser'] - stats['cpu= Sys'])<o:p></o:p> class HostSample<o:p></o:p><= /p> function __init__<o:p></o:p>=      &nbsp= ;             s= elf.totcpu =3D TotalCpuSample()<o:p></o:p> class TotalCpuSample<o:p></o:p></sp= an> function __init__<o:p></o:p>=      &nbsp= ;   self.user, userNice, self.sys, self.idle =3D \<o:p></o:p></sp= an>      &nbsp= ;      map(int, file('/proc/stat').readline().spli= t()[1:5])<o:p></o:p>      &nbsp= ;  self.user +=3D userNice<o:p></o:p> <o:p> </o:p> Question1: Why stats[‘cpuIdle= ’] do not use the sampling data totcpu.idle for calculating?<o:p></o:= p> <o:p> </o:p> Question2: There is another data na= med iowait in /proc/stat, do we need to consider add this into usage CPU pe= rcentage for calculating?<o:p></o:p> <o:p> </o:p> Best= Regards, Jason Liao= <o:p></o:p> <o:p> </o:p> </div> </body> </html> --_000_B63C858E777679458338A30A991BB524015C66EBG1W3780americas_--

10 years, 2 months

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[Engine-devel] oVirt Engine 3.2 ReST API

by Vikas Kokare

As per the API documentation, the host cluster element "data_center id=" is both required at creation(exclamation in a triangle) as well as non-updatable(lock sign). Is it right to consider that, not only is this a required element, but it can't be changed and deleting(disassociation) is out of question? We have a RHEVM environment, where one such host cluster was created initially being associated to a data center. Later someone changed something, that resulted in the specific host cluster having no "data_center" element on it. Could it be that the association was deleted, or that the data_center itself was deleted, but the system didn't honor referential integrity, that it was being referred by other objects?

10 years, 2 months

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[Engine-devel] Fwd: [vdsm] ovirt-guest-agent on debian

by Sven Kieske

Forwarding to engine devel, because it seems there is no interest in this feature on vdsm-devel. Could this get integrated somehow? I managed to reuse the ubuntu build of ovirt-guest-agent for debian. -------- Original-Nachricht -------- Betreff: [vdsm] ovirt-guest-agent on debian Datum: Mon, 10 Mar 2014 09:36:11 +0000 Von: Sven Kieske <S.Kieske(a)mittwald.de> An: VDSM Project Development <vdsm-devel(a)lists.fedorahosted.org> Hi, I just did some additional research, here are my results: on a clean debian 7 x64 VM inside oVirt: I did as root: apt-get install python-software-properties add-apt-repository -y ppa:zhshzhou/vdsm-ubuntu vim /etc/apt/sources.list.d/zhshzhou-vdsm-ubuntu-wheezy.list change the following lines from: deb http://ppa.launchpad.net/zhshzhou/vdsm-ubuntu/ubuntu wheezy main deb-src http://ppa.launchpad.net/zhshzhou/vdsm-ubuntu/ubuntu wheezy main to: deb http://ppa.launchpad.net/zhshzhou/vdsm-ubuntu/ubuntu precise main deb-src http://ppa.launchpad.net/zhshzhou/vdsm-ubuntu/ubuntu precise main then: apt-get update apt-get install ovirt-guest-agent You get an error: Setting up ovirt-guest-agent (1.0.8.201309301944.gitb7f8f2-1ppa1) ... chown: cannot access `/var/log/ovirt-guest-agent/ovirt-guest-agent.log': No such file or directory but it works: ls -lashi /var/log/ovirt-guest-agent/ovirt-guest-agent.log 533212 4.0K -rw-r--r-- 1 ovirtagent ovirtagent 208 Mar 10 10:20 /var/log/ovirt-guest-agent/ovirt-guest-agent.log service ovirt-guest-agent status [ ok ] ovirt-guest-agent is running. IP information shows up in ovirt. it would be cool if the folder "precise" on the ppa could be cloned to be a folder "wheezy". So you would not need to change the apt-sources entries. I don't know why this chown error occurs, but it seems to work! -- Mit freundlichen Grüßen / Regards Sven Kieske Systemadministrator Mittwald CM Service GmbH & Co. KG Königsberger Straße 6 32339 Espelkamp T: +49-5772-293-100 F: +49-5772-293-333 https://www.mittwald.de Geschäftsführer: Robert Meyer St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen _______________________________________________ vdsm-devel mailing list vdsm-devel(a)lists.fedorahosted.org https://lists.fedorahosted.org/mailman/listinfo/vdsm-devel

10 years, 2 months

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[Engine-devel] ovirt-engine-3.4.0 is broken

by Omer Frenkel

Hi, looks like both commits: http://gerrit.ovirt.org/#/c/25436/ http://gerrit.ovirt.org/#/c/25313/ introduced an upgrade script with the same number to the 3.4.0 branch, and now build fails. can you please fix this?

10 years, 2 months

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[Engine-devel] Supposed to add per CPU usage related infomation into engine core and vdsm

by Liao, Chuan (Jason Liao, HPservers-Core-OE-PSC)

--_000_B63C858E777679458338A30A991BB524015C4A99G2W2441americas_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi All, In order to support NUMA and guest NUMA feature in ovirt. We need per NUMA node CPU usage or per CPU usage related information on eng= ine core. This information will be used for VM who have NUMA aware information and fi= nd the best Host to run it on with best performance. Approach 1: 1. Sample data in vdsm for each CPU stats. (sys, usr, iowait, idle) 2. Calculate the each CPU usage information. (%sys, %usr, %iowait, %id= le) 3. Transport the usage data to engine core. 4. Engine core merge per NUMA node CPU usage. (%sys, %usr, %iowait, %i= dle) Approach 2: 1. Sample data in vdsm for each CPU stats. (sys, usr, iowait, idle) 2. Calculate the each CPU usage information. (%sys, %usr, %iowait, %id= le) 3. VDSM merge per NUMA node CPU usage. (%sys, %usr, %iowait, %idle) 4. Transport the usage data to engine core. Which one do you prefer, and why, or other solution. Best Regards, Jason Liao --_000_B63C858E777679458338A30A991BB524015C4A99G2W2441americas_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr= osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" xmlns=3D"http:= //www.w3.org/TR/REC-html40"> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"= > <meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang=3D"ZH-CN" link=3D"#0563C1" vlink=3D"#954F72" style=3D"text-justi= fy-trim:punctuation"> <div class=3D"WordSection1"> Hi All,<o:p></o:p> <o:p> </o:p> In order to support NUMA and guest = NUMA feature in ovirt.<o:p></o:p> We need per NUMA node CPU usage or = per CPU usage related information on engine core.<o:p></o:p> <o:p> </o:p> This information will be used for V= M who have NUMA aware information and find the best Host to run it on with = best performance.<o:p></o:p> <o:p> </o:p> Approach 1:<o:p></o:p> <![if !supportLists]>1.<sp= an style=3D"font:7.0pt "Times New Roman"">   &nbsp= ;  <![endif]>Sample data in vdsm for eac= h CPU stats. (sys, usr, iowait, idle)<o:p></o:p> <![if !supportLists]>2.<sp= an style=3D"font:7.0pt "Times New Roman"">   &nbsp= ;  <![endif]>Calculate the each CPU usag= e information. (%sys, %usr, %iowait, %idle)<o:p></o:p> <![if !supportLists]>3.<sp= an style=3D"font:7.0pt "Times New Roman"">   &nbsp= ;  <![endif]>Transport the usage data to= engine core.<o:p></o:p> <![if !supportLists]>4.<sp= an style=3D"font:7.0pt "Times New Roman"">   &nbsp= ;  <![endif]>Engine core merge per NUMA = node CPU usage. (%sys, %usr, %iowait, %idle)<o:p></o:p> <o:p> </o:p> Approach 2:<o:p></o:p> <![if !supportLists]>1.<sp= an style=3D"font:7.0pt "Times New Roman"">   &nbsp= ;  <![endif]>Sample data in vdsm for eac= h CPU stats. (sys, usr, iowait, idle)<o:p></o:p> <![if !supportLists]>2.<sp= an style=3D"font:7.0pt "Times New Roman"">   &nbsp= ;  <![endif]>Calculate the each CPU usag= e information. (%sys, %usr, %iowait, %idle)<o:p></o:p> <![if !supportLists]>3.<sp= an style=3D"font:7.0pt "Times New Roman"">   &nbsp= ;  <![endif]>VDSM merge per NUMA node CP= U usage. (%sys, %usr, %iowait, %idle)<o:p></o:p> <![if !supportLists]>4.<sp= an style=3D"font:7.0pt "Times New Roman"">   &nbsp= ;  <![endif]>Transport the usage data to= engine core.<o:p></o:p> <o:p> </o:p> Which one do you prefer, and why, o= r other solution.<o:p></o:p> <o:p> </o:p> Best= Regards, Jason Liao= <o:p></o:p> <o:p> </o:p> </div> </body> </html> --_000_B63C858E777679458338A30A991BB524015C4A99G2W2441americas_--

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Re: [Engine-devel] [Users] GSoC 14 Idea Discussion - virt-sparsify integration

by Yedidyah Bar David

----- Original Message ----- > From: "Utkarsh Singh" <utkarshsins(a)gmail.com> > To: users(a)ovirt.org > Sent: Friday, March 7, 2014 7:23:16 PM > Subject: [Users] GSoC 14 Idea Discussion - virt-sparsify integration > > Hello, > > I am Utkarsh, a 4th year undergrad from IIT Delhi and a GSoC-14 > aspirant. I have been lately involved in an ongoing project Baadal > Cloud Computing Platform in my institute, which has got me interested > in oVirt for a potential GSoC project. > > I was going through the virt-sparsify integration project idea. I have > gone through the architecture documentation on the oVirt website. As > far as I understand, the virt-sparsify integration needs to be done on > the VDSM daemon, and it's control is either going to be completely > independent of ovirt-engine (for example running it once every 24 > hours), or it's something that is centrally controlled by the > ovirt-engine through XML/RPC calls. The details are not specified in > the project ideas page. I would like to ask - > > 1. What would be the proposed ideal implementation? (Central-Control > or Independent-Control) > 2. Is virt-sparsify usage going to be automated or > administrator-triggered, or a combination of both? > > > There are some aspects of the idea, which I would like to discuss > before I start working on a proposal. > > It's not necessary that an automated usage of virt-sparsify is limited > to any simple idea. Architecture documentation states that > ovirt-engine has features like Monitoring that would allow > administrators (and possibly users) to be aware of vm-guest > performance as well as vm-host performance. I am not very sure about > how this data is collected, Is it done through MoM, or Is this > directly done by VDSM, or is someone else doing this (for hosts). It > would be great if someone can explain that to me. This information > about vm-guest usage and vm-host health can help in determining how > virt-sparsify is to be used. > > I am also not very clear about the Shared Storage component in the > architecture. Does oVirt make any assumptions about the Shared > Storage. For example, the performance difference between running > virt-sparsify on NFS as compared to running it (if possible) directly > on storage hardware. If the Storage solution is necessarily a NAS > instance, then virt-sparsify on NFS mount is the only option. > > > > Right now, I am in the process of setting up oVirt on my system, and > getting more familiar with the architecture. Regarding my experience. > I am acquainted with both Java and Python. I have little experience > with JBoss, but I have worked on some other Web Application Servers > like web2py and Play Framework. My involvement in Baadal Platform has > got me acquainted with libvirt/QEMU, the details of which I have > mentioned below (if anyone is interested). > > Please advise me about the things that I am missing about this > project. If there are some implementation details that I need to know, > kindly help me with that too. > > > > Looking forward. Thanks. > ===================== > Utkarsh > IIT Delhi > > Ongoing project details - > > Article (Old) > http://www.cc.iitd.ernet.in/CSC/index.php?view=article&id=123:baadal-the-... > > Github > https://github.com/apoorvemohan/newbaadal > > My contribution - Deployment Scripting and Sandbox Environment Setup for > Testing > https://github.com/apoorvemohan/newbaadal/tree/master/baadaltesting/sandbox > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users > (Adding vdsm-devel and engine-devel) -- Didi

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Devel March 2014