--_000_D86C48DF8800164BBE50B87623F7AC9585D0624Dln2wio001devtra_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I'm trying to use the vhostmd vdsm host to access ovirt node metrics from w= ithin a VM. Vhostmd is running and updating the /dev/shm/vhostmd0 on the ov= irt node. The part I'm stuck on is: "This disk image is exported read-only to guests.= Guests can read the disk image to see metrics" from http://www.ovirt.org/d= evelop/developer-guide/vdsm/hook/vhostmd/ Does the hook do this by default? I don't see any new read-only device moun= ted in the guest. Is there additional work I need to do to mount this and a= ccess the data from within the guest? Many thanks, Simon --_000_D86C48DF8800164BBE50B87623F7AC9585D0624Dln2wio001devtra_ 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"=
http://www.ovirt.org/develop/developer-guide/vdsm/hook/vhostmd/</a><o:p></= o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">Does the hook do this by default? I don’t see = any new read-only device mounted in the guest. Is there additional work I n= eed to do to mount this and access the data from within the guest?<o:p></o:=
<meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)"> <style><!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:11.0pt; font-family:"Calibri",sans-serif;} a:link, span.MsoHyperlink {mso-style-priority:99; color:#0563C1; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {mso-style-priority:99; color:#954F72; text-decoration:underline;} span.EmailStyle17 {mso-style-type:personal-compose; font-family:"Calibri",sans-serif; color:windowtext;} .MsoChpDefault {mso-style-type:export-only; font-family:"Calibri",sans-serif;} @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;} div.WordSection1 {page:WordSection1;} --></style><!--[if gte mso 9]><xml> <o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" /> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext=3D"edit"> <o:idmap v:ext=3D"edit" data=3D"1" /> </o:shapelayout></xml><![endif]--> </head> <body lang=3D"EN-US" link=3D"#0563C1" vlink=3D"#954F72"> <div class=3D"WordSection1"> <p class=3D"MsoNormal">I’m trying to use the vhostmd vdsm host to acc= ess ovirt node metrics from within a VM. Vhostmd is running and updating th= e /dev/shm/vhostmd0 on the ovirt node.<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">The part I’m stuck on is: “This disk ima= ge is exported read-only to guests. Guests can read the disk image to see m= etrics” from <a href=3D"http://www.ovirt.org/develop/developer-guide/vdsm/hook/vhostmd/"= p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">Many thanks,<o:p></o:p></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal">Simon<o:p></o:p></p> </div> </body> </html> --_000_D86C48DF8800164BBE50B87623F7AC9585D0624Dln2wio001devtra_--
This is a multi-part message in MIME format. --------------080601030306010607090205 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit Hi Simon, You will need to have vhostmd running on the oVirt node and set the "sap_agent" custom property for the vm as you may see on the screenshot. sap_agent Arsène On 04/15/2016 12:15 PM, Simon Barrett wrote:
Im trying to use the vhostmd vdsm host to access ovirt node metrics from within a VM. Vhostmd is running and updating the /dev/shm/vhostmd0 on the ovirt node.
The part Im stuck on is: This disk image is exported read-only to guests. Guests can read the disk image to see metrics from http://www.ovirt.org/develop/developer-guide/vdsm/hook/vhostmd/
Does the hook do this by default? I dont see any new read-only device mounted in the guest. Is there additional work I need to do to mount this and access the data from within the guest?
Many thanks,
Simon
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
--------------080601030306010607090205 Content-Type: multipart/related; boundary="------------010501040204020507090605" --------------010501040204020507090605 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: 8bit <html> <head> <meta content="text/html; charset=windows-1252" http-equiv="Content-Type"> </head> <body text="#000000" bgcolor="#FFFFFF"> Hi Simon,<br> <br> You will need to have vhostmd running on the oVirt node and set the "sap_agent" custom property for the vm as you may see on the screenshot.<br> <br> <img alt="sap_agent" src="cid:part1.05000603.06090803@unibas.ch" height="125" width="664"><br> <br> Arsène<br> <br> <div class="moz-cite-prefix">On 04/15/2016 12:15 PM, Simon Barrett wrote:<br> </div> <blockquote cite="mid:D86C48DF8800164BBE50B87623F7AC9585D0624D@ln2-wio-001.dev.tradingscreen.com" type="cite"> <meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <style><!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:11.0pt; font-family:"Calibri",sans-serif;} a:link, span.MsoHyperlink {mso-style-priority:99; color:#0563C1; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {mso-style-priority:99; color:#954F72; text-decoration:underline;} span.EmailStyle17 {mso-style-type:personal-compose; font-family:"Calibri",sans-serif; color:windowtext;} .MsoChpDefault {mso-style-type:export-only; font-family:"Calibri",sans-serif;} @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;} div.WordSection1 {page:WordSection1;} --></style><!--[if gte mso 9]><xml> <o:shapedefaults v:ext="edit" spidmax="1026" /> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext="edit"> <o:idmap v:ext="edit" data="1" /> </o:shapelayout></xml><![endif]--> <div class="WordSection1"> <p class="MsoNormal">Im trying to use the vhostmd vdsm host to access ovirt node metrics from within a VM. Vhostmd is running and updating the /dev/shm/vhostmd0 on the ovirt node.<o:p></o:p></p> <p class="MsoNormal"><o:p> </o:p></p> <p class="MsoNormal">The part Im stuck on is: This disk image is exported read-only to guests. Guests can read the disk image to see metrics from <a moz-do-not-send="true" href="http://www.ovirt.org/develop/developer-guide/vdsm/hook/vhostmd/">http://www.ovirt.org/develop/developer-guide/vdsm/hook/vhostmd/</a><o:p></o:p></p> <p class="MsoNormal"><o:p> </o:p></p> <p class="MsoNormal">Does the hook do this by default? I dont see any new read-only device mounted in the guest. Is there additional work I need to do to mount this and access the data from within the guest?<o:p></o:p></p> <p class="MsoNormal"><o:p> </o:p></p> <p class="MsoNormal">Many thanks,<o:p></o:p></p> <p class="MsoNormal"><o:p> </o:p></p> <p class="MsoNormal">Simon<o:p></o:p></p> </div> <br> <fieldset class="mimeAttachmentHeader"></fieldset> <br> <pre wrap="">_______________________________________________ Users mailing list <a class="moz-txt-link-abbreviated" href="mailto:Users@ovirt.org">Users@ovirt.org</a> <a class="moz-txt-link-freetext" href="http://lists.ovirt.org/mailman/listinfo/users">http://lists.ovirt.org/mailman/listinfo/users</a> </pre> </blockquote> <br> </body> </html> --------------010501040204020507090605 Content-Type: image/png; name="Selection_035.png" Content-Transfer-Encoding: base64 Content-ID: <part1.05000603.06090803@unibas.ch> Content-Disposition: inline; filename="Selection_035.png" iVBORw0KGgoAAAANSUhEUgAAApgAAAB9CAIAAACJRYSGAAAAA3NCSVQICAjb4U/gAAAAEHRF 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</p> <p class=3D"MsoNormal"><a name=3D"_MailEndCompose"><span style=3D"color:#1F= 497D"><o:p> </o:p></span></a></p> <div> <div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in = 0in 0in"> <p class=3D"MsoNormal"><b><span style=3D"color:windowtext">From:</span></b>= <span style=3D"color:windowtext"> users-bounces@ovirt.org [mailto:users-bou= nces@ovirt.org] <b>On Behalf Of </b>Ars=E8ne Gschwind<br> <b>Sent:</b> Monday, 18 April, 2016 16:03<br> <b>To:</b> users@ovirt.org<br> <b>Subject:</b> Re: [ovirt-users] vhostmd vdsm-hook<o:p></o:p></span></p> </div> </div> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt">Hi Simon,<br> <br> You will need to have vhostmd running on the oVirt node and set the "s= ap_agent" custom property for the vm as you may see on the screenshot.= <br> <br> <img width=3D"664" height=3D"125" id=3D"_x0000_i1025" src=3D"cid:image001.p= ng@01D19A1F.384C1930" alt=3D"sap_agent"><br> <br> Ars=E8ne<span style=3D"font-size:12.0pt"><o:p></o:p></span></p> <div> <p class=3D"MsoNormal">On 04/15/2016 12:15 PM, Simon Barrett wrote:<o:p></o= :p></p> </div> <blockquote style=3D"margin-top:5.0pt;margin-bottom:5.0pt"> <p class=3D"MsoNormal">I’m trying to use the vhostmd vdsm host to acc= ess ovirt node metrics from within a VM. Vhostmd is running and updating th= e /dev/shm/vhostmd0 on the ovirt node.<o:p></o:p></p> <p class=3D"MsoNormal"> <o:p></o:p></p> <p class=3D"MsoNormal">The part I’m stuck on is: “This disk ima= ge is exported read-only to guests. Guests can read the disk image to see m= etrics” from <a href=3D"http://www.ovirt.org/develop/developer-guide/vdsm/hook/vhostmd/"= http://www.ovirt.org/develop/developer-guide/vdsm/hook/vhostmd/</a><o:p></= o:p></p> <p class=3D"MsoNormal"> <o:p></o:p></p> <p class=3D"MsoNormal">Does the hook do this by default? I don’t see = any new read-only device mounted in the guest. Is there additional work I n= eed to do to mount this and access the data from within the guest?<o:p></o:=
--_004_D86C48DF8800164BBE50B87623F7AC9585D1394Bln2wio001devtra_ Content-Type: multipart/alternative; boundary="_000_D86C48DF8800164BBE50B87623F7AC9585D1394Bln2wio001devtra_" --_000_D86C48DF8800164BBE50B87623F7AC9585D1394Bln2wio001devtra_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks Ars=E8ne, I have vhostmd running on the ovirt node and have set the sap_agent to true= on the VM configuration. I also stopped and started the VM to ensure that = the config change took effect. On the oVirt node I see the vhostmd running and see the following entry in = the qemu-kvm output: drive file=3D/dev/shm/vhostmd0,if=3Dnone,id=3Ddrive-virtio-disk701,readonly= =3Don,format=3Draw -device virtio-blk-pci,scsi=3Doff,bus=3Dpci.0,addr=3D0x8= ,drive=3Ddrive-virtio-disk701,id=3Dvirtio-disk701 The part I wasn't quite understanding was how this presented itself on the = VM but I now see a new disk device "/dev/vdb". If I cat the contents of /de= v/vdb I now see the information that is provided from the ovirt node, which= is great news and very useful. Thanks for your help. Simon From: users-bounces@ovirt.org [mailto:users-bounces@ovirt.org] On Behalf Of= Ars=E8ne Gschwind Sent: Monday, 18 April, 2016 16:03 To: users@ovirt.org Subject: Re: [ovirt-users] vhostmd vdsm-hook Hi Simon, You will need to have vhostmd running on the oVirt node and set the "sap_ag= ent" custom property for the vm as you may see on the screenshot. [sap_agent] Ars=E8ne On 04/15/2016 12:15 PM, Simon Barrett wrote: I'm trying to use the vhostmd vdsm host to access ovirt node metrics from w= ithin a VM. Vhostmd is running and updating the /dev/shm/vhostmd0 on the ov= irt node. The part I'm stuck on is: "This disk image is exported read-only to guests.= Guests can read the disk image to see metrics" from http://www.ovirt.org/d= evelop/developer-guide/vdsm/hook/vhostmd/ Does the hook do this by default? I don't see any new read-only device moun= ted in the guest. Is there additional work I need to do to mount this and a= ccess the data from within the guest? Many thanks, Simon _______________________________________________ Users mailing list Users@ovirt.org<mailto:Users@ovirt.org> http://lists.ovirt.org/mailman/listinfo/users --_000_D86C48DF8800164BBE50B87623F7AC9585D1394Bln2wio001devtra_ Content-Type: text/html; charset="iso-8859-1" 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=3Diso-8859-= 1"> <meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)"> <!--[if !mso]><style>v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} </style><![endif]--><style><!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} @font-face {font-family:Consolas; panose-1:2 11 6 9 2 2 4 3 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:11.0pt; font-family:"Calibri",sans-serif; color:black;} a:link, span.MsoHyperlink {mso-style-priority:99; color:#0563C1; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {mso-style-priority:99; color:#954F72; text-decoration:underline;} pre {mso-style-priority:99; mso-style-link:"HTML Preformatted Char"; margin:0in; margin-bottom:.0001pt; font-size:10.0pt; font-family:"Courier New"; color:black;} span.EmailStyle17 {mso-style-type:personal; font-family:"Calibri",sans-serif; color:windowtext;} span.HTMLPreformattedChar {mso-style-name:"HTML Preformatted Char"; mso-style-priority:99; mso-style-link:"HTML Preformatted"; font-family:Consolas; color:black;} span.EmailStyle20 {mso-style-type:personal; font-family:"Calibri",sans-serif; color:#1F497D;} span.EmailStyle21 {mso-style-type:personal-compose; font-family:"Calibri",sans-serif; color:windowtext;} .MsoChpDefault {mso-style-type:export-only; font-size:10.0pt;} @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;} div.WordSection1 {page:WordSection1;} --></style><!--[if gte mso 9]><xml> <o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" /> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext=3D"edit"> <o:idmap v:ext=3D"edit" data=3D"1" /> </o:shapelayout></xml><![endif]--> </head> <body bgcolor=3D"white" lang=3D"EN-US" link=3D"#0563C1" vlink=3D"#954F72"> <div class=3D"WordSection1"> <p class=3D"MsoNormal"><span style=3D"color:#1F497D">Thanks Ars=E8ne,<o:p><= /o:p></span></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p> </o:p></spa= n></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D">I have vhostmd running= on the ovirt node and have set the sap_agent to true on the VM configurati= on. I also stopped and started the VM to ensure that the config change took= effect.<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p> </o:p></spa= n></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D">On the oVirt node I se= e the vhostmd running and see the following entry in the qemu-kvm output:<o= :p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p> </o:p></spa= n></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D">drive file=3D/dev/shm/= vhostmd0,if=3Dnone,id=3Ddrive-virtio-disk701,readonly=3Don,format=3Draw -de= vice virtio-blk-pci,scsi=3Doff,bus=3Dpci.0,addr=3D0x8,drive=3Ddrive-virtio-= disk701,id=3Dvirtio-disk701<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p> </o:p></spa= n></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D">The part I wasn’= t quite understanding was how this presented itself on the VM but I now see= a new disk device “/dev/vdb”. If I cat the contents of /dev/vd= b I now see the information that is provided from the ovirt node, which is great news and very useful.<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p> </o:p></spa= n></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D">Thanks for your help.<= o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p> </o:p></spa= n></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D">Simon<o:p></o:p></span= p></p> <p class=3D"MsoNormal"> <o:p></o:p></p> <p class=3D"MsoNormal">Many thanks,<o:p></o:p></p> <p class=3D"MsoNormal"> <o:p></o:p></p> <p class=3D"MsoNormal">Simon<o:p></o:p></p> <p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:"Ti= mes New Roman",serif"><br> <br> <br> <o:p></o:p></span></p> <pre>_______________________________________________<o:p></o:p></pre> <pre>Users mailing list<o:p></o:p></pre> <pre><a href=3D"mailto:Users@ovirt.org">Users@ovirt.org</a><o:p></o:p></pre=
<pre><a href=3D"http://lists.ovirt.org/mailman/listinfo/users">http://lists= .ovirt.org/mailman/listinfo/users</a><o:p></o:p></pre> </blockquote> <p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:"Ti= mes New Roman",serif"><o:p> </o:p></span></p> </div> </body> </html> --_000_D86C48DF8800164BBE50B87623F7AC9585D1394Bln2wio001devtra_-- --_004_D86C48DF8800164BBE50B87623F7AC9585D1394Bln2wio001devtra_ Content-Type: image/png; name="image001.png" Content-Description: image001.png Content-Disposition: inline; filename="image001.png"; size=6941; creation-date="Tue, 19 Apr 2016 08:48:31 GMT"; modification-date="Tue, 19 Apr 2016 08:48:31 GMT" Content-ID: <image001.png@01D19A1F.384C1930> Content-Transfer-Encoding: base64 iVBORw0KGgoAAAANSUhEUgAAApgAAAB9CAIAAACJRYSGAAAAA3NCSVQICAjb4U/gAAAAEHRFWHRT b2Z0d2FyZQBTaHV0dGVyY4LQCQAAGrlJREFUeNrt3XlYE9feB/AzCMEtAkkg4AKCLCpQVFC0Lk2u uNG+Km4opdoq1qUVqBR5vCKbWAsqiMtVS7W39FYoWG9d61K1LlRfrYpIlCVFEAQU2RJACJB5/5g2 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This is a multi-part message in MIME format. --------------040808020702070803070800 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit The metric information are available on this additional disk /dev/vdb. You may install the package vm-dump-metrics and use the command vm-dump-metrics which will display all metrics in an xml format. Arsène On 04/19/2016 10:48 AM, Simon Barrett wrote:
Thanks Arsène,
I have vhostmd running on the ovirt node and have set the sap_agent to true on the VM configuration. I also stopped and started the VM to ensure that the config change took effect.
On the oVirt node I see the vhostmd running and see the following entry in the qemu-kvm output:
drive file=/dev/shm/vhostmd0,if=none,id=drive-virtio-disk701,readonly=on,format=raw -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x8,drive=drive-virtio-disk701,id=virtio-disk701
The part I wasnt quite understanding was how this presented itself on the VM but I now see a new disk device /dev/vdb. If I cat the contents of /dev/vdb I now see the information that is provided from the ovirt node, which is great news and very useful.
Thanks for your help.
Simon
*From:*users-bounces@ovirt.org [mailto:users-bounces@ovirt.org] *On Behalf Of *Arsène Gschwind *Sent:* Monday, 18 April, 2016 16:03 *To:* users@ovirt.org *Subject:* Re: [ovirt-users] vhostmd vdsm-hook
Hi Simon,
You will need to have vhostmd running on the oVirt node and set the "sap_agent" custom property for the vm as you may see on the screenshot.
sap_agent
Arsène
On 04/15/2016 12:15 PM, Simon Barrett wrote:
Im trying to use the vhostmd vdsm host to access ovirt node metrics from within a VM. Vhostmd is running and updating the /dev/shm/vhostmd0 on the ovirt node.
The part Im stuck on is: This disk image is exported read-only to guests. Guests can read the disk image to see metrics from http://www.ovirt.org/develop/developer-guide/vdsm/hook/vhostmd/
Does the hook do this by default? I dont see any new read-only device mounted in the guest. Is there additional work I need to do to mount this and access the data from within the guest?
Many thanks,
Simon
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Users@ovirt.org <mailto:Users@ovirt.org>
--------------040808020702070803070800 Content-Type: multipart/related; boundary="------------040400040805020001030705" --------------040400040805020001030705 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: 8bit <html> <head> <meta content="text/html; charset=windows-1252" http-equiv="Content-Type"> </head> <body text="#000000" bgcolor="#FFFFFF"> The metric information are available on this additional disk /dev/vdb. You may install the package vm-dump-metrics and use the command vm-dump-metrics which will display all metrics in an xml format.<br> <br> Arsène<br> <br> <div class="moz-cite-prefix">On 04/19/2016 10:48 AM, Simon Barrett wrote:<br> </div> <blockquote cite="mid:D86C48DF8800164BBE50B87623F7AC9585D1394B@ln2-wio-001.dev.tradingscreen.com" type="cite"> <meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <!--[if !mso]><style>v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} </style><![endif]--> <style><!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} @font-face {font-family:Consolas; panose-1:2 11 6 9 2 2 4 3 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:11.0pt; font-family:"Calibri",sans-serif; color:black;} a:link, span.MsoHyperlink {mso-style-priority:99; color:#0563C1; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {mso-style-priority:99; color:#954F72; text-decoration:underline;} pre {mso-style-priority:99; mso-style-link:"HTML Preformatted Char"; margin:0in; margin-bottom:.0001pt; font-size:10.0pt; font-family:"Courier New"; color:black;} span.EmailStyle17 {mso-style-type:personal; font-family:"Calibri",sans-serif; color:windowtext;} span.HTMLPreformattedChar {mso-style-name:"HTML Preformatted Char"; mso-style-priority:99; mso-style-link:"HTML Preformatted"; font-family:Consolas; color:black;} span.EmailStyle20 {mso-style-type:personal; font-family:"Calibri",sans-serif; color:#1F497D;} span.EmailStyle21 {mso-style-type:personal-compose; font-family:"Calibri",sans-serif; color:windowtext;} .MsoChpDefault {mso-style-type:export-only; font-size:10.0pt;} @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;} div.WordSection1 {page:WordSection1;} --></style><!--[if gte mso 9]><xml> <o:shapedefaults v:ext="edit" spidmax="1026" /> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext="edit"> <o:idmap v:ext="edit" data="1" /> </o:shapelayout></xml><![endif]--> <div class="WordSection1"> <p class="MsoNormal"><span style="color:#1F497D">Thanks Arsène,<o:p></o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D">I have vhostmd running on the ovirt node and have set the sap_agent to true on the VM configuration. I also stopped and started the VM to ensure that the config change took effect.<o:p></o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D">On the oVirt node I see the vhostmd running and see the following entry in the qemu-kvm output:<o:p></o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D">drive file=/dev/shm/vhostmd0,if=none,id=drive-virtio-disk701,readonly=on,format=raw -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x8,drive=drive-virtio-disk701,id=virtio-disk701<o:p></o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D">The part I wasnt quite understanding was how this presented itself on the VM but I now see a new disk device /dev/vdb. If I cat the contents of /dev/vdb I now see the information that is provided from the ovirt node, which is great news and very useful.<o:p></o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D">Thanks for your help.<o:p></o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D">Simon<o:p></o:p></span></p> <p class="MsoNormal"><a moz-do-not-send="true" name="_MailEndCompose"><span style="color:#1F497D"><o:p> </o:p></span></a></p> <div> <div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in"> <p class="MsoNormal"><b><span style="color:windowtext">From:</span></b><span style="color:windowtext"> <a class="moz-txt-link-abbreviated" href="mailto:users-bounces@ovirt.org">users-bounces@ovirt.org</a> [<a class="moz-txt-link-freetext" href="mailto:users-bounces@ovirt.org">mailto:users-bounces@ovirt.org</a>] <b>On Behalf Of </b>Arsène Gschwind<br> <b>Sent:</b> Monday, 18 April, 2016 16:03<br> <b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:users@ovirt.org">users@ovirt.org</a><br> <b>Subject:</b> Re: [ovirt-users] vhostmd vdsm-hook<o:p></o:p></span></p> </div> </div> <p class="MsoNormal"><o:p> </o:p></p> <p class="MsoNormal" style="margin-bottom:12.0pt">Hi Simon,<br> <br> You will need to have vhostmd running on the oVirt node and set the "sap_agent" custom property for the vm as you may see on the screenshot.<br> <br> <img id="_x0000_i1025" src="cid:part2.04050509.01050409@unibas.ch" alt="sap_agent" height="125" width="664"><br> <br> Arsène<span style="font-size:12.0pt"><o:p></o:p></span></p> <div> <p class="MsoNormal">On 04/15/2016 12:15 PM, Simon Barrett wrote:<o:p></o:p></p> </div> <blockquote style="margin-top:5.0pt;margin-bottom:5.0pt"> <p class="MsoNormal">Im trying to use the vhostmd vdsm host to access ovirt node metrics from within a VM. Vhostmd is running and updating the /dev/shm/vhostmd0 on the ovirt node.<o:p></o:p></p> <p class="MsoNormal"> <o:p></o:p></p> <p class="MsoNormal">The part Im stuck on is: This disk image is exported read-only to guests. Guests can read the disk image to see metrics from <a moz-do-not-send="true" href="http://www.ovirt.org/develop/developer-guide/vdsm/hook/vhostmd/">http://www.ovirt.org/develop/developer-guide/vdsm/hook/vhostmd/</a><o:p></o:p></p> <p class="MsoNormal"> <o:p></o:p></p> <p class="MsoNormal">Does the hook do this by default? I dont see any new read-only device mounted in the guest. Is there additional work I need to do to mount this and access the data from within the guest?<o:p></o:p></p> <p class="MsoNormal"> <o:p></o:p></p> <p class="MsoNormal">Many thanks,<o:p></o:p></p> <p class="MsoNormal"> <o:p></o:p></p> <p class="MsoNormal">Simon<o:p></o:p></p> <p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif"><br> <br> <br> <o:p></o:p></span></p> <pre>_______________________________________________<o:p></o:p></pre> <pre>Users mailing list<o:p></o:p></pre> <pre><a moz-do-not-send="true" href="mailto:Users@ovirt.org">Users@ovirt.org</a><o:p></o:p></pre> <pre><a moz-do-not-send="true" href="http://lists.ovirt.org/mailman/listinfo/users">http://lists.ovirt.org/mailman/listinfo/users</a><o:p></o:p></pre> </blockquote> <p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></p> </div> </blockquote> <br> </body> </html> --------------040400040805020001030705 Content-Type: image/png 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</span></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p> </o:p></spa= n></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D">If I have a VM with a = /dev/vda disk and a /dev/vdb disk, when I turn the vhostmd hook on the vm m= etric device gets created as /dev/vdb and the original /dev/vdb disk = gets bumped to /dev/vdc. <o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p> </o:p></spa= n></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D">Is that expected behav= ior? Will that not cause problems?<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p> </o:p></spa= n></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D">Thanks,<o:p></o:p></sp= an></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p> </o:p></spa= n></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D">Simon<o:p></o:p></span= </p> <p class=3D"MsoNormal"><a name=3D"_MailEndCompose"><span style=3D"color:#1F= 497D"><o:p> </o:p></span></a></p> <div> <div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in = 0in 0in"> <p class=3D"MsoNormal"><b><span style=3D"color:windowtext">From:</span></b>= <span style=3D"color:windowtext"> Ars=E8ne Gschwind [mailto:arsene.gschwind= @unibas.ch] <br> <b>Sent:</b> Tuesday, 19 April, 2016 13:06<br> <b>To:</b> Simon Barrett <Simon.Barrett@tradingscreen.com>; users@ovi= rt.org<br> <b>Subject:</b> Re: [ovirt-users] vhostmd vdsm-hook<o:p></o:p></span></p> </div> </div> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt">The metric informatio= n are available on this additional disk /dev/vdb. You may install the packa= ge vm-dump-metrics and use the command vm-dump-metrics which will display a= ll metrics in an xml format.<br> <br> Ars=E8ne<span style=3D"font-size:12.0pt"><o:p></o:p></span></p> <div> <p class=3D"MsoNormal">On 04/19/2016 10:48 AM, Simon Barrett wrote:<o:p></o= :p></p> </div> <blockquote style=3D"margin-top:5.0pt;margin-bottom:5.0pt"> <p class=3D"MsoNormal"><span style=3D"color:#1F497D">Thanks Ars=E8ne,</span= <o:p></o:p></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D"> </span><o:p></o:=
</p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D"> </span><o:p></o:=
http://www.ovirt.org/develop/developer-guide/vdsm/hook/vhostmd/</a><o:p></= o:p></p> <p class=3D"MsoNormal"> <o:p></o:p></p> <p class=3D"MsoNormal">Does the hook do this by default? I don’t see = any new read-only device mounted in the guest. Is there additional work I n= eed to do to mount this and access the data from within the guest?<o:p></o:=
--_004_D86C48DF8800164BBE50B87623F7AC9585D141B8ln2wio001devtra_ Content-Type: multipart/alternative; boundary="_000_D86C48DF8800164BBE50B87623F7AC9585D141B8ln2wio001devtra_" --_000_D86C48DF8800164BBE50B87623F7AC9585D141B8ln2wio001devtra_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Thanks again but how does that work when a VM is configured to have more th= an one disk? If I have a VM with a /dev/vda disk and a /dev/vdb disk, when I turn the vh= ostmd hook on the vm metric device gets created as /dev/vdb and the origin= al /dev/vdb disk gets bumped to /dev/vdc. Is that expected behavior? Will that not cause problems? Thanks, Simon From: Ars=E8ne Gschwind [mailto:arsene.gschwind@unibas.ch] Sent: Tuesday, 19 April, 2016 13:06 To: Simon Barrett <Simon.Barrett@tradingscreen.com>; users@ovirt.org Subject: Re: [ovirt-users] vhostmd vdsm-hook The metric information are available on this additional disk /dev/vdb. You = may install the package vm-dump-metrics and use the command vm-dump-metrics= which will display all metrics in an xml format. Ars=E8ne On 04/19/2016 10:48 AM, Simon Barrett wrote: Thanks Ars=E8ne, I have vhostmd running on the ovirt node and have set the sap_agent to true= on the VM configuration. I also stopped and started the VM to ensure that = the config change took effect. On the oVirt node I see the vhostmd running and see the following entry in = the qemu-kvm output: drive file=3D/dev/shm/vhostmd0,if=3Dnone,id=3Ddrive-virtio-disk701,readonly= =3Don,format=3Draw -device virtio-blk-pci,scsi=3Doff,bus=3Dpci.0,addr=3D0x8= ,drive=3Ddrive-virtio-disk701,id=3Dvirtio-disk701 The part I wasn't quite understanding was how this presented itself on the = VM but I now see a new disk device "/dev/vdb". If I cat the contents of /de= v/vdb I now see the information that is provided from the ovirt node, which= is great news and very useful. Thanks for your help. Simon From: users-bounces@ovirt.org<mailto:users-bounces@ovirt.org> [mailto:users= -bounces@ovirt.org] On Behalf Of Ars=E8ne Gschwind Sent: Monday, 18 April, 2016 16:03 To: users@ovirt.org<mailto:users@ovirt.org> Subject: Re: [ovirt-users] vhostmd vdsm-hook Hi Simon, You will need to have vhostmd running on the oVirt node and set the "sap_ag= ent" custom property for the vm as you may see on the screenshot. [sap_agent] Ars=E8ne On 04/15/2016 12:15 PM, Simon Barrett wrote: I'm trying to use the vhostmd vdsm host to access ovirt node metrics from w= ithin a VM. Vhostmd is running and updating the /dev/shm/vhostmd0 on the ov= irt node. The part I'm stuck on is: "This disk image is exported read-only to guests.= Guests can read the disk image to see metrics" from http://www.ovirt.org/d= evelop/developer-guide/vdsm/hook/vhostmd/ Does the hook do this by default? I don't see any new read-only device moun= ted in the guest. Is there additional work I need to do to mount this and a= ccess the data from within the guest? Many thanks, Simon _______________________________________________ Users mailing list Users@ovirt.org<mailto:Users@ovirt.org> http://lists.ovirt.org/mailman/listinfo/users --_000_D86C48DF8800164BBE50B87623F7AC9585D141B8ln2wio001devtra_ Content-Type: text/html; charset="iso-8859-1" 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=3Diso-8859-= 1"> <meta name=3D"Generator" content=3D"Microsoft Word 15 (filtered medium)"> <!--[if !mso]><style>v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} </style><![endif]--><style><!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} @font-face {font-family:Consolas; panose-1:2 11 6 9 2 2 4 3 2 4;} @font-face {font-family:"Times New Roman \,serif"; panose-1:0 0 0 0 0 0 0 0 0 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:11.0pt; font-family:"Calibri",sans-serif; color:black;} a:link, span.MsoHyperlink {mso-style-priority:99; color:#0563C1; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {mso-style-priority:99; color:#954F72; text-decoration:underline;} pre {mso-style-priority:99; mso-style-link:"HTML Preformatted Char"; margin:0in; margin-bottom:.0001pt; font-size:10.0pt; font-family:"Courier New"; color:black;} span.HTMLPreformattedChar {mso-style-name:"HTML Preformatted Char"; mso-style-priority:99; mso-style-link:"HTML Preformatted"; font-family:Consolas; color:black;} span.EmailStyle19 {mso-style-type:personal; font-family:"Calibri",sans-serif; color:windowtext;} span.EmailStyle20 {mso-style-type:personal; font-family:"Calibri",sans-serif; color:#1F497D;} span.EmailStyle21 {mso-style-type:personal; font-family:"Calibri",sans-serif; color:windowtext;} span.EmailStyle22 {mso-style-type:personal-reply; font-family:"Calibri",sans-serif; color:#1F497D;} .MsoChpDefault {mso-style-type:export-only; font-size:10.0pt;} @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;} div.WordSection1 {page:WordSection1;} --></style><!--[if gte mso 9]><xml> <o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" /> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext=3D"edit"> <o:idmap v:ext=3D"edit" data=3D"1" /> </o:shapelayout></xml><![endif]--> </head> <body bgcolor=3D"white" lang=3D"EN-US" link=3D"#0563C1" vlink=3D"#954F72"> <div class=3D"WordSection1"> <p class=3D"MsoNormal"><span style=3D"color:#1F497D">Thanks again but how d= oes that work when a VM is configured to have more than one disk?<o:p></o:p= p></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D">I have vhostmd running= on the ovirt node and have set the sap_agent to true on the VM configurati= on. I also stopped and started the VM to ensure that the config change took= effect.</span><o:p></o:p></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D"> </span><o:p></o:= p></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D">On the oVirt node I se= e the vhostmd running and see the following entry in the qemu-kvm output:</= span><o:p></o:p></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D"> </span><o:p></o:= p></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D">drive file=3D/dev/shm/= vhostmd0,if=3Dnone,id=3Ddrive-virtio-disk701,readonly=3Don,format=3Draw -de= vice virtio-blk-pci,scsi=3Doff,bus=3Dpci.0,addr=3D0x8,drive=3Ddrive-virtio-= disk701,id=3Dvirtio-disk701</span><o:p></o:p></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D"> </span><o:p></o:= p></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D">The part I wasn’= t quite understanding was how this presented itself on the VM but I now see= a new disk device “/dev/vdb”. If I cat the contents of /dev/vd= b I now see the information that is provided from the ovirt node, which is great news and very useful.</span><o:p></o:p></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D"> </span><o:p></o:= p></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D">Thanks for your help.<= /span><o:p></o:p></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D"> </span><o:p></o:= p></p> <p class=3D"MsoNormal"><span style=3D"color:#1F497D">Simon</span><o:p></o:p= p></p> <div> <div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in = 0in 0in"> <p class=3D"MsoNormal"><b><span style=3D"color:windowtext">From:</span></b>= <span style=3D"color:windowtext"> <a href=3D"mailto:users-bounces@ovirt.org">users-bounces@ovirt.org</a> [<a = href=3D"mailto:users-bounces@ovirt.org">mailto:users-bounces@ovirt.org</a>] <b>On Behalf Of </b>Ars=E8ne Gschwind<br> <b>Sent:</b> Monday, 18 April, 2016 16:03<br> <b>To:</b> <a href=3D"mailto:users@ovirt.org">users@ovirt.org</a><br> <b>Subject:</b> Re: [ovirt-users] vhostmd vdsm-hook</span><o:p></o:p></p> </div> </div> <p class=3D"MsoNormal"> <o:p></o:p></p> <p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt">Hi Simon,<br> <br> You will need to have vhostmd running on the oVirt node and set the "s= ap_agent" custom property for the vm as you may see on the screenshot.= <br> <br> <img border=3D"0" width=3D"664" height=3D"125" id=3D"_x0000_i1025" src=3D"c= id:image001.png@01D19A41.6BC269F0" alt=3D"sap_agent"><br> <br> Ars=E8ne<o:p></o:p></p> <div> <p class=3D"MsoNormal">On 04/15/2016 12:15 PM, Simon Barrett wrote:<o:p></o= :p></p> </div> <blockquote style=3D"margin-top:5.0pt;margin-bottom:5.0pt"> <p class=3D"MsoNormal">I’m trying to use the vhostmd vdsm host to acc= ess ovirt node metrics from within a VM. Vhostmd is running and updating th= e /dev/shm/vhostmd0 on the ovirt node.<o:p></o:p></p> <p class=3D"MsoNormal"> <o:p></o:p></p> <p class=3D"MsoNormal">The part I’m stuck on is: “This disk ima= ge is exported read-only to guests. Guests can read the disk image to see m= etrics” from <a href=3D"http://www.ovirt.org/develop/developer-guide/vdsm/hook/vhostmd/"= p></p> <p class=3D"MsoNormal"> <o:p></o:p></p> <p class=3D"MsoNormal">Many thanks,<o:p></o:p></p> <p class=3D"MsoNormal"> <o:p></o:p></p> <p class=3D"MsoNormal">Simon<o:p></o:p></p> <p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:"Ti= mes New Roman ,serif",serif"><br> <br> <br> <br> </span><o:p></o:p></p> <pre>_______________________________________________<o:p></o:p></pre> <pre>Users mailing list<o:p></o:p></pre> <pre><a href=3D"mailto:Users@ovirt.org">Users@ovirt.org</a><o:p></o:p></pre=
<pre><a href=3D"http://lists.ovirt.org/mailman/listinfo/users">http://lists= .ovirt.org/mailman/listinfo/users</a><o:p></o:p></pre> </blockquote> <p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:"Ti= mes New Roman ,serif",serif"> </span><o:p></o:p></p> </blockquote> <p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:"Ti= mes New Roman",serif"><o:p> </o:p></span></p> </div> </body> </html> --_000_D86C48DF8800164BBE50B87623F7AC9585D141B8ln2wio001devtra_-- --_004_D86C48DF8800164BBE50B87623F7AC9585D141B8ln2wio001devtra_ Content-Type: image/png; name="image001.png" Content-Description: image001.png Content-Disposition: inline; filename="image001.png"; size=6941; creation-date="Tue, 19 Apr 2016 12:43:15 GMT"; modification-date="Tue, 19 Apr 2016 12:43:15 GMT" Content-ID: <image001.png@01D19A41.6BC269F0> Content-Transfer-Encoding: base64 iVBORw0KGgoAAAANSUhEUgAAApgAAAB9CAIAAACJRYSGAAAAA3NCSVQICAjb4U/gAAAAEHRFWHRT 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This is a multi-part message in MIME format. --------------010207050909040904000208 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit I've never tried with 2 disks but I will assume that the next free available disk will be used by the vdsm hook and the vm-dump-metrics cmd will check the kind of disk. Let me know if you give a try.... thanks, Arsène On 04/19/2016 02:43 PM, Simon Barrett wrote:
Thanks again but how does that work when a VM is configured to have more than one disk?
If I have a VM with a /dev/vda disk and a /dev/vdb disk, when I turn the vhostmd hook on the vm metric device gets created as /dev/vdb and the original /dev/vdb disk gets bumped to /dev/vdc.
Is that expected behavior? Will that not cause problems?
Thanks,
Simon
*From:*Arsène Gschwind [mailto:arsene.gschwind@unibas.ch] *Sent:* Tuesday, 19 April, 2016 13:06 *To:* Simon Barrett <Simon.Barrett@tradingscreen.com>; users@ovirt.org *Subject:* Re: [ovirt-users] vhostmd vdsm-hook
The metric information are available on this additional disk /dev/vdb. You may install the package vm-dump-metrics and use the command vm-dump-metrics which will display all metrics in an xml format.
Arsène
On 04/19/2016 10:48 AM, Simon Barrett wrote:
Thanks Arsène,
I have vhostmd running on the ovirt node and have set the sap_agent to true on the VM configuration. I also stopped and started the VM to ensure that the config change took effect.
On the oVirt node I see the vhostmd running and see the following entry in the qemu-kvm output:
drive file=/dev/shm/vhostmd0,if=none,id=drive-virtio-disk701,readonly=on,format=raw -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x8,drive=drive-virtio-disk701,id=virtio-disk701
The part I wasnt quite understanding was how this presented itself on the VM but I now see a new disk device /dev/vdb. If I cat the contents of /dev/vdb I now see the information that is provided from the ovirt node, which is great news and very useful.
Thanks for your help.
Simon
*From:*users-bounces@ovirt.org <mailto:users-bounces@ovirt.org> [mailto:users-bounces@ovirt.org] *On Behalf Of *Arsène Gschwind *Sent:* Monday, 18 April, 2016 16:03 *To:* users@ovirt.org <mailto:users@ovirt.org> *Subject:* Re: [ovirt-users] vhostmd vdsm-hook
Hi Simon,
You will need to have vhostmd running on the oVirt node and set the "sap_agent" custom property for the vm as you may see on the screenshot.
sap_agent
Arsène
On 04/15/2016 12:15 PM, Simon Barrett wrote:
Im trying to use the vhostmd vdsm host to access ovirt node metrics from within a VM. Vhostmd is running and updating the /dev/shm/vhostmd0 on the ovirt node.
The part Im stuck on is: This disk image is exported read-only to guests. Guests can read the disk image to see metrics from http://www.ovirt.org/develop/developer-guide/vdsm/hook/vhostmd/
Does the hook do this by default? I dont see any new read-only device mounted in the guest. Is there additional work I need to do to mount this and access the data from within the guest?
Many thanks,
Simon
_______________________________________________
Users mailing list
Users@ovirt.org <mailto:Users@ovirt.org>
--------------010207050909040904000208 Content-Type: multipart/related; boundary="------------060301050507010702070709" --------------060301050507010702070709 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: 8bit <html> <head> <meta content="text/html; charset=windows-1252" http-equiv="Content-Type"> </head> <body text="#000000" bgcolor="#FFFFFF"> I've never tried with 2 disks but I will assume that the next free available disk will be used by the vdsm hook and the vm-dump-metrics cmd will check the kind of disk.<br> Let me know if you give a try....<br> <br> thanks,<br> Arsène<br> <br> <div class="moz-cite-prefix">On 04/19/2016 02:43 PM, Simon Barrett wrote:<br> </div> <blockquote cite="mid:D86C48DF8800164BBE50B87623F7AC9585D141B8@ln2-wio-001.dev.tradingscreen.com" type="cite"> <meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <!--[if !mso]><style>v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} </style><![endif]--> <style><!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} @font-face {font-family:Consolas; panose-1:2 11 6 9 2 2 4 3 2 4;} @font-face {font-family:"Times New Roman \,serif"; panose-1:0 0 0 0 0 0 0 0 0 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:11.0pt; font-family:"Calibri",sans-serif; color:black;} a:link, span.MsoHyperlink {mso-style-priority:99; color:#0563C1; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {mso-style-priority:99; color:#954F72; text-decoration:underline;} pre {mso-style-priority:99; mso-style-link:"HTML Preformatted Char"; margin:0in; margin-bottom:.0001pt; font-size:10.0pt; font-family:"Courier New"; color:black;} span.HTMLPreformattedChar {mso-style-name:"HTML Preformatted Char"; mso-style-priority:99; mso-style-link:"HTML Preformatted"; font-family:Consolas; color:black;} span.EmailStyle19 {mso-style-type:personal; font-family:"Calibri",sans-serif; color:windowtext;} span.EmailStyle20 {mso-style-type:personal; font-family:"Calibri",sans-serif; color:#1F497D;} span.EmailStyle21 {mso-style-type:personal; font-family:"Calibri",sans-serif; color:windowtext;} span.EmailStyle22 {mso-style-type:personal-reply; font-family:"Calibri",sans-serif; color:#1F497D;} .MsoChpDefault {mso-style-type:export-only; font-size:10.0pt;} @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;} div.WordSection1 {page:WordSection1;} --></style><!--[if gte mso 9]><xml> <o:shapedefaults v:ext="edit" spidmax="1026" /> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext="edit"> <o:idmap v:ext="edit" data="1" /> </o:shapelayout></xml><![endif]--> <div class="WordSection1"> <p class="MsoNormal"><span style="color:#1F497D">Thanks again but how does that work when a VM is configured to have more than one disk?<o:p></o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D">If I have a VM with a /dev/vda disk and a /dev/vdb disk, when I turn the vhostmd hook on the vm metric device gets created as /dev/vdb and the original /dev/vdb disk gets bumped to /dev/vdc. <o:p></o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D">Is that expected behavior? Will that not cause problems?<o:p></o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D">Thanks,<o:p></o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D">Simon<o:p></o:p></span></p> <p class="MsoNormal"><a moz-do-not-send="true" name="_MailEndCompose"><span style="color:#1F497D"><o:p> </o:p></span></a></p> <div> <div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in"> <p class="MsoNormal"><b><span style="color:windowtext">From:</span></b><span style="color:windowtext"> Arsène Gschwind [<a class="moz-txt-link-freetext" href="mailto:arsene.gschwind@unibas.ch">mailto:arsene.gschwind@unibas.ch</a>] <br> <b>Sent:</b> Tuesday, 19 April, 2016 13:06<br> <b>To:</b> Simon Barrett <a class="moz-txt-link-rfc2396E" href="mailto:Simon.Barrett@tradingscreen.com"><Simon.Barrett@tradingscreen.com></a>; <a class="moz-txt-link-abbreviated" href="mailto:users@ovirt.org">users@ovirt.org</a><br> <b>Subject:</b> Re: [ovirt-users] vhostmd vdsm-hook<o:p></o:p></span></p> </div> </div> <p class="MsoNormal"><o:p> </o:p></p> <p class="MsoNormal" style="margin-bottom:12.0pt">The metric information are available on this additional disk /dev/vdb. You may install the package vm-dump-metrics and use the command vm-dump-metrics which will display all metrics in an xml format.<br> <br> Arsène<span style="font-size:12.0pt"><o:p></o:p></span></p> <div> <p class="MsoNormal">On 04/19/2016 10:48 AM, Simon Barrett wrote:<o:p></o:p></p> </div> <blockquote style="margin-top:5.0pt;margin-bottom:5.0pt"> <p class="MsoNormal"><span style="color:#1F497D">Thanks Arsène,</span><o:p></o:p></p> <p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p> <p class="MsoNormal"><span style="color:#1F497D">I have vhostmd running on the ovirt node and have set the sap_agent to true on the VM configuration. I also stopped and started the VM to ensure that the config change took effect.</span><o:p></o:p></p> <p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p> <p class="MsoNormal"><span style="color:#1F497D">On the oVirt node I see the vhostmd running and see the following entry in the qemu-kvm output:</span><o:p></o:p></p> <p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p> <p class="MsoNormal"><span style="color:#1F497D">drive file=/dev/shm/vhostmd0,if=none,id=drive-virtio-disk701,readonly=on,format=raw -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x8,drive=drive-virtio-disk701,id=virtio-disk701</span><o:p></o:p></p> <p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p> <p class="MsoNormal"><span style="color:#1F497D">The part I wasnt quite understanding was how this presented itself on the VM but I now see a new disk device /dev/vdb. If I cat the contents of /dev/vdb I now see the information that is provided from the ovirt node, which is great news and very useful.</span><o:p></o:p></p> <p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p> <p class="MsoNormal"><span style="color:#1F497D">Thanks for your help.</span><o:p></o:p></p> <p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p> <p class="MsoNormal"><span style="color:#1F497D">Simon</span><o:p></o:p></p> <p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p> <div> <div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in"> <p class="MsoNormal"><b><span style="color:windowtext">From:</span></b><span style="color:windowtext"> <a moz-do-not-send="true" href="mailto:users-bounces@ovirt.org">users-bounces@ovirt.org</a> [<a moz-do-not-send="true" href="mailto:users-bounces@ovirt.org">mailto:users-bounces@ovirt.org</a>] <b>On Behalf Of </b>Arsène Gschwind<br> <b>Sent:</b> Monday, 18 April, 2016 16:03<br> <b>To:</b> <a moz-do-not-send="true" href="mailto:users@ovirt.org">users@ovirt.org</a><br> <b>Subject:</b> Re: [ovirt-users] vhostmd vdsm-hook</span><o:p></o:p></p> </div> </div> <p class="MsoNormal"> <o:p></o:p></p> <p class="MsoNormal" style="margin-bottom:12.0pt">Hi Simon,<br> <br> You will need to have vhostmd running on the oVirt node and set the "sap_agent" custom property for the vm as you may see on the screenshot.<br> <br> <img id="_x0000_i1025" src="cid:part5.02060400.03080709@unibas.ch" alt="sap_agent" height="125" width="664" border="0"><br> <br> Arsène<o:p></o:p></p> <div> <p class="MsoNormal">On 04/15/2016 12:15 PM, Simon Barrett wrote:<o:p></o:p></p> </div> <blockquote style="margin-top:5.0pt;margin-bottom:5.0pt"> <p class="MsoNormal">Im trying to use the vhostmd vdsm host to access ovirt node metrics from within a VM. Vhostmd is running and updating the /dev/shm/vhostmd0 on the ovirt node.<o:p></o:p></p> <p class="MsoNormal"> <o:p></o:p></p> <p class="MsoNormal">The part Im stuck on is: This disk image is exported read-only to guests. Guests can read the disk image to see metrics from <a moz-do-not-send="true" href="http://www.ovirt.org/develop/developer-guide/vdsm/hook/vhostmd/">http://www.ovirt.org/develop/developer-guide/vdsm/hook/vhostmd/</a><o:p></o:p></p> <p class="MsoNormal"> <o:p></o:p></p> <p class="MsoNormal">Does the hook do this by default? I dont see any new read-only device mounted in the guest. Is there additional work I need to do to mount this and access the data from within the guest?<o:p></o:p></p> <p class="MsoNormal"> <o:p></o:p></p> <p class="MsoNormal">Many thanks,<o:p></o:p></p> <p class="MsoNormal"> <o:p></o:p></p> <p class="MsoNormal">Simon<o:p></o:p></p> <p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman ,serif",serif"><br> <br> <br> <br> </span><o:p></o:p></p> <pre>_______________________________________________<o:p></o:p></pre> <pre>Users mailing list<o:p></o:p></pre> <pre><a moz-do-not-send="true" href="mailto:Users@ovirt.org">Users@ovirt.org</a><o:p></o:p></pre> <pre><a moz-do-not-send="true" href="http://lists.ovirt.org/mailman/listinfo/users">http://lists.ovirt.org/mailman/listinfo/users</a><o:p></o:p></pre> </blockquote> <p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman ,serif",serif"> </span><o:p></o:p></p> </blockquote> <p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New 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participants (2)
-
Arsène Gschwind -
Simon Barrett