Unfortunately, there's no such integration point at the moment. On Tue, Jun 6, 2017 at 5:57 AM, Deepak Jagtap <deepak.jagtap(a)maxta.com&gt; wrote:

--_000_MWHPR11MB1663F5706A4201A33C8C7759EDC50MWHPR11MB1663namp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi Allon, After going through current vdsm code base, noticed that after taking a sna= pshot vm starts referring the newly created qcow image/volume. For internal snapshots which are not qcow is it configurable somehow so th= at vm continues doing writes to same base image? Thanks & Regards, Deepak ________________________________ From: Deepak Jagtap Sent: Tuesday, June 6, 2017 3:37:03 PM To: Allon Mureinik Cc: devel(a)ovirt.org Subject: Re: [ovirt-devel] Snapshots & clone support from datastore Thanks Allon! Best Regards, Deepak ________________________________ From: Allon Mureinik <amureini(a)redhat.comSent: Tuesday, June 6, 2017 2:43:17 PM To: Deepak Jagtap Cc: devel(a)ovirt.org Subject: Re: [ovirt-devel] Snapshots & clone support from datastore Unfortunately, there's no such integration point at the moment. On Tue, Jun 6, 2017 at 5:57 AM, Deepak Jagtap <deepak.jagtap(a)maxta.com&lt;mail= to:deepak.jagtap@maxta.com>> wrote: Hey Guys, I am newbie to ovirt, and wanted to confirm whats the best way to leverage = snapshot, clone features provided by the datastore filesystem. I have a btrfs datastore exported and wanted use btrfs snapshots for vm sna= pshot & clones. Does ovirt offers any hooks/APIs so that image snapshots are created by the= filesystem? Thanks & Regards, Deepak _______________________________________________ Devel mailing list Devel@ovirt.org<mailto:Devel@ovirt.orghttp://lists.ovirt.org/mailman/listinfo/devel --_000_MWHPR11MB1663F5706A4201A33C8C7759EDC50MWHPR11MB1663namp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html<head<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"= </head<body<style type=3D"text/css" style=3D"display:none;"><!-- P {margin-top:0;margi= n-bottom:0;} --></style<div id=3D"divtagdefaultwrapper" style=3D"font-size:12pt;color:#000000;font= -family:Calibri,Arial,Helvetica,sans-serif;" dir=3D"ltr"<p>Hi Allon,</p<p><br</p<p>After going through&nbsp;current vdsm&nbsp;code base, noticed that after= taking a snapshot vm starts referring the newly created qcow image/volume.= </p<p>For internal snapshots which are not qcow &nbsp;is it&nbsp;configurable = somehow&nbsp;so that vm continues doing writes to same base image?</p<p><br</p<p>Thanks &amp; Regards,</p<p>Deepak</p</div<hr style=3D"display:inline-block;width:98%" tabindex=3D"-1"<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" st= yle=3D"font-size:11pt" color=3D"#000000"><b>From:</b> Deepak Jagtap<br<b>Sent:</b> Tuesday, June 6, 2017 3:37:03 PM<br<b>To:</b> Allon Mureinik<br<b>Cc:</b> devel(a)ovirt.org&lt;br<b>Subject:</b> Re: [ovirt-devel] Snapshots &amp; clone support from datast= ore</font<div>&nbsp;</div</div<div><style type=3D"text/css" style=3D"display:none;"><!-- P {margin-top:0;= margin-bottom:0;} --></style<div id=3D"divtagdefaultwrapper" style=3D"font-size:12pt;color:#000000;font= -family:Calibri,Arial,Helvetica,sans-serif;" dir=3D"ltr"<p>Thanks Allon!</p<p><br</p<p>Best Regards,</p<p>Deepak</p</div<hr style=3D"display:inline-block;width:98%" tabindex=3D"-1"<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" st= yle=3D"font-size:11pt" color=3D"#000000"><b>From:</b> Allon Mureinik &lt;am= ureini(a)redhat.com&amp;gt;&lt;br<b>Sent:</b> Tuesday, June 6, 2017 2:43:17 PM<br<b>To:</b> Deepak Jagtap<br<b>Cc:</b> devel(a)ovirt.org&lt;br<b>Subject:</b> Re: [ovirt-devel] Snapshots &amp; clone support from datast= ore</font<div>&nbsp;</div</div<div<div dir=3D"ltr"<div class=3D"gmail_default" style=3D"font-family:monospace,monospace">Unfo= rtunately, there's no such integration point at the moment.</div</div<div class=3D"gmail_extra"><br<div class=3D"gmail_quote">On Tue, Jun 6, 2017 at 5:57 AM, Deepak Jagtap <s= pan dir=3D"ltr"&lt;<a href=3D"mailto:deepak.jagtap@maxta.com" target=3D"_blank">deepak.jag= tap(a)maxta.com&lt;/a&gt;&amp;gt;&lt;/span&gt; wrote:<br<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p= x #ccc solid;padding-left:1ex"<div dir=3D"ltr"<div id=3D"m_-4873246095173968224divtagdefaultwrapper" style=3D"font-size:1= 2pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif" dir=3D"lt= r"<p>Hey Guys,</p<p><br</p<p>I am newbie to ovirt, and wanted to confirm whats the best way to levera= ge snapshot, clone features&nbsp;</p<p>provided by the datastore filesystem.</p<p>I have a btrfs datastore exported&nbsp;and wanted use btrfs snapshots fo= r vm snapshot &amp; clones.</p<p>Does ovirt offers any hooks/APIs so that image snapshots are created by = the filesystem?</p<p><br</p<p>Thanks &amp; Regards,</p<p>Deepak</p<p>&nbsp;</p</div</div<br______________________________<wbr>_________________<brDevel mailing list<br<a href=3D"mailto:Devel@ovirt.org">Devel@ovirt.org</a><br<a href=3D"http://lists.ovirt.org/mailman/listinfo/devel" rel=3D"noreferrer= " target=3D"_blank">http://lists.ovirt.org/<wbr>mailman/... br</blockquote</div<br</div</div</div</body</html --_000_MWHPR11MB1663F5706A4201A33C8C7759EDC50MWHPR11MB1663namp_--

--_000_MWHPR11MB1663D3BF9B01DB6E1142AB1DEDDA0MWHPR11MB1663namp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi Allon, I am trying to leverage snapshot capability of underlying filesystem. As per my understanding current snapshot works like this: Base Image(raw)--->snap1(qcow)->snap2(qcow), i.e after each snapshot vm sta= rts writing on newly created qcow image. So in this case vm is going to do all new writes on snap2(qcow) voulme and = will redirect read IOs to snap1 & Base image as required. But in my case snapshots created by the filesystem are read only and it's i= n raw format. As a result after creating snapshot vm disk configuration won't change afte= r taking snapshot but will continue doing writes on same base image. So snapshots will look like this: Base Image(raw)--->snap1(raw)->snap2(raw) Base Image will always remain writable, while the snapshots will remain rea= d only raw format. Just wanted to confirm is this configurable so that vm continues referring= base image after the snapshot instead of newly created qcow image? Thanks & Regards, Deepak ________________________________ From: Allon Mureinik <amureini(a)redhat.comSent: Tuesday, June 20, 2017 7:59:03 PM To: Deepak Jagtap Cc: devel(a)ovirt.org Subject: Re: [ovirt-devel] Snapshots & clone support from datastore Not sure I understand the question. Could you give an example of what you m= ean perhpas? On Tue, Jun 20, 2017 at 10:01 PM, Deepak Jagtap <deepak.jagtap(a)maxta.com&lt;ma= ilto:deepak.jagtap@maxta.com>> wrote: Hi Allon, After going through current vdsm code base, noticed that after taking a sna= pshot vm starts referring the newly created qcow image/volume. For internal snapshots which are not qcow is it configurable somehow so th= at vm continues doing writes to same base image? Thanks & Regards, Deepak ________________________________ From: Deepak Jagtap Sent: Tuesday, June 6, 2017 3:37:03 PM To: Allon Mureinik Cc: devel@ovirt.org<mailto:devel@ovirt.orgSubject: Re: [ovirt-devel] Snapshots & clone support from datastore Thanks Allon! Best Regards, Deepak ________________________________ From: Allon Mureinik <amureini@redhat.com<mailto:amureini@redhat.com>Sent: Tuesday, June 6, 2017 2:43:17 PM To: Deepak Jagtap Cc: devel@ovirt.org<mailto:devel@ovirt.orgSubject: Re: [ovirt-devel] Snapshots & clone support from datastore Unfortunately, there's no such integration point at the moment. On Tue, Jun 6, 2017 at 5:57 AM, Deepak Jagtap <deepak.jagtap(a)maxta.com&lt;mail= to:deepak.jagtap@maxta.com>> wrote: Hey Guys, I am newbie to ovirt, and wanted to confirm whats the best way to leverage = snapshot, clone features provided by the datastore filesystem. I have a btrfs datastore exported and wanted use btrfs snapshots for vm sna= pshot & clones. Does ovirt offers any hooks/APIs so that image snapshots are created by the= filesystem? Thanks & Regards, Deepak _______________________________________________ Devel mailing list Devel@ovirt.org<mailto:Devel@ovirt.orghttp://lists.ovirt.org/mailman/listinfo/devel --_000_MWHPR11MB1663D3BF9B01DB6E1142AB1DEDDA0MWHPR11MB1663namp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html<head<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"= </head<body<style type=3D"text/css" style=3D"display:none;"><!-- P {margin-top:0;margi= n-bottom:0;} --></style<div id=3D"divtagdefaultwrapper" style=3D"font-size:12pt;color:#000000;font= -family:Calibri,Arial,Helvetica,sans-serif;" dir=3D"ltr"<p>Hi Allon,</p<p><br</p<p>I am&nbsp;trying to leverage snapshot &nbsp;capability of underlying fil= esystem.</p<p><span style=3D"font-size: 12pt;">As per my understanding current snapsho= t&nbsp;</span><span style=3D"font-size: 12pt;"></span><span style=3D"font-s= ize: 12pt;">works like this:</span></p<p>Base Image(raw)---&gt;snap1(qcow)-&gt;snap2(qcow), i.e&nbsp;after each s= napshot vm starts writing on newly created qcow image.</p<p>So in this case vm is going to do all new writes on snap2(qcow) voulme a= nd will redirect read&nbsp;IOs to snap1 &amp; Base image as required.</p<p><br</p<p>But in my case snapshots created by the filesystem are read only and it'= s in raw format.</p<p>As a result after creating snapshot vm disk configuration won't change a= fter taking snapshot but will continue doing writes on same base image.</p<p>So snapshots will look like this:</p<p><span style=3D"font-family: Calibri, Arial, Helvetica, sans-serif, Emoji= Font, &quot;Apple Color Emoji&quot;, &quot;Segoe UI Emoji&quot;, NotoColorE= moji, &quot;Segoe UI Symbol&quot;, &quot;Android Emoji&quot;, EmojiSymbols;= font-size: 16px;">Base Image(raw)---&gt;snap1(raw)-&gt;snap2(raw)</span><b= r</p<p><span style=3D"font-family: Calibri, Arial, Helvetica, sans-serif, Emoji= Font, &quot;Apple Color Emoji&quot;, &quot;Segoe UI Emoji&quot;, NotoColorE= moji, &quot;Segoe UI Symbol&quot;, &quot;Android Emoji&quot;, EmojiSymbols;= font-size: 16px;">Base Image will always remain writable,&nbsp;while the s= napshots will remain read only raw format.</span></p<p><br</p<p>Just wanted to confirm is this configurable so that vm continues &nbsp;r= eferring base image after the snapshot instead of newly created qcow image?= </p<p><br</p<p>Thanks &amp; Regards,</p<p>Deepak</p<p><span style=3D"font-family: Calibri, Arial, Helvetica, sans-serif, Emoji= Font, &quot;Apple Color Emoji&quot;, &quot;Segoe UI Emoji&quot;, NotoColorE= moji, &quot;Segoe UI Symbol&quot;, &quot;Android Emoji&quot;, EmojiSymbols;= font-size: 16px;"><br</span></p<p><span style=3D"font-family: Calibri, Arial, Helvetica, sans-serif, Emoji= Font, &quot;Apple Color Emoji&quot;, &quot;Segoe UI Emoji&quot;, NotoColorE= moji, &quot;Segoe UI Symbol&quot;, &quot;Android Emoji&quot;, EmojiSymbols;= font-size: 16px;"><br</span></p<p><br</p<p>&nbsp;</p</div<hr style=3D"display:inline-block;width:98%" tabindex=3D"-1"<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" st= yle=3D"font-size:11pt" color=3D"#000000"><b>From:</b> Allon Mureinik &lt;am= ureini(a)redhat.com&amp;gt;&lt;br<b>Sent:</b> Tuesday, June 20, 2017 7:59:03 PM<br<b>To:</b> Deepak Jagtap<br<b>Cc:</b> devel(a)ovirt.org&lt;br<b>Subject:</b> Re: [ovirt-devel] Snapshots &amp; clone support from datast= ore</font<div>&nbsp;</div</div<div<div dir=3D"ltr"<div class=3D"gmail_default" style=3D"font-family:monospace,monospace">Not = sure I understand the question. Could you give an example&nbsp;of what you = mean perhpas?</div</div<div class=3D"gmail_extra"><br<div class=3D"gmail_quote">On Tue, Jun 20, 2017 at 10:01 PM, Deepak Jagtap = <span dir=3D"ltr"&lt;<a href=3D"mailto:deepak.jagtap@maxta.com" target=3D"_blank">deepak.jag= tap(a)maxta.com&lt;/a&gt;&amp;gt;&lt;/span&gt; wrote:<br<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p= x #ccc solid;padding-left:1ex"<div<div id=3D"m_5891938740723837127divtagdefaultwrapper" style=3D"font-size:12= pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif" dir=3D"ltr= "<p>Hi Allon,</p<p><br</p<p>After going through&nbsp;current vdsm&nbsp;code base, noticed that after= taking a snapshot vm starts referring the newly created qcow image/volume.= </p<p>For internal snapshots which are not qcow &nbsp;is it&nbsp;configurable = somehow&nbsp;so that vm continues doing writes to same base image?</p<p><br</p<p>Thanks &amp; Regards,</p<p>Deepak</p</div<hr style=3D"display:inline-block;width:98%"<div id=3D"m_5891938740723837127divRplyFwdMsg" dir=3D"ltr"><font face=3D"Ca= libri, sans-serif" style=3D"font-size:11pt" color=3D"#000000"><b>From:</b> = Deepak Jagtap<br<b>Sent:</b> Tuesday, June 6, 2017 3:37:03 PM<br<b>To:</b> Allon Mureinik<span class=3D""><br<b>Cc:</b> <a href=3D"mailto:devel@ovirt.org" target=3D"_blank">devel@ovirt= .org</a><br<b>Subject:</b> Re: [ovirt-devel] Snapshots &amp; clone support from datast= ore</span></font<div>&nbsp;</div</div<span class=3D""<div<div id=3D"m_5891938740723837127divtagdefaultwrapper" style=3D"font-size:12= pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif" dir=3D"ltr= "<p>Thanks Allon!</p<p><br</p<p>Best Regards,</p<p>Deepak</p</div<hr style=3D"display:inline-block;width:98%"<div id=3D"m_5891938740723837127divRplyFwdMsg" dir=3D"ltr"><font face=3D"Ca= libri, sans-serif" style=3D"font-size:11pt" color=3D"#000000"><b>From:</b> = Allon Mureinik &lt;<a href=3D"mailto:amureini@redhat.com" target=3D"_blank"= &gt;amureini(a)redhat.com&lt;/a&gt;&amp;gt;&lt;br<b>Sent:</b> Tuesday, June 6, 2017 2:43:17 PM<br<b>To:</b> Deepak Jagtap<br<b>Cc:</b> <a href=3D"mailto:devel@ovirt.org" target=3D"_blank">devel@ovirt= .org</a><br<b>Subject:</b> Re: [ovirt-devel] Snapshots &amp; clone support from datast= ore</font<div>&nbsp;</div</div<div<div dir=3D"ltr"<div class=3D"gmail_default" style=3D"font-family:monospace,monospace">Unfo= rtunately, there's no such integration point at the moment.</div</div<div class=3D"gmail_extra"><br<div class=3D"gmail_quote">On Tue, Jun 6, 2017 at 5:57 AM, Deepak Jagtap <s= pan dir=3D"ltr"&lt;<a href=3D"mailto:deepak.jagtap@maxta.com" target=3D"_blank">deepak.jag= tap(a)maxta.com&lt;/a&gt;&amp;gt;&lt;/span&gt; wrote:<br<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p= x #ccc solid;padding-left:1ex"<div dir=3D"ltr"<div id=3D"m_5891938740723837127m_-4873246095173968224divtagdefaultwrapper"= style=3D"font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,= sans-serif" dir=3D"ltr"<p>Hey Guys,</p<p><br</p<p>I am newbie to ovirt, and wanted to confirm whats the best way to levera= ge snapshot, clone features&nbsp;</p<p>provided by the datastore filesystem.</p<p>I have a btrfs datastore exported&nbsp;and wanted use btrfs snapshots fo= r vm snapshot &amp; clones.</p<p>Does ovirt offers any hooks/APIs so that image snapshots are created by = the filesystem?</p<p><br</p<p>Thanks &amp; Regards,</p<p>Deepak</p<p>&nbsp;</p</div</div<br______________________________<wbr>_________________<brDevel mailing list<br<a href=3D"mailto:Devel@ovirt.org" target=3D&quot;_blank&quot;&gt;Devel(a)ovirt.org&lt;/a&gt;&lt;br= <a href=3D"http://lists.ovirt.org/mailman/listinfo/devel" rel=3D"noreferrer= " target=3D"_blank">http://lists.ovirt.org/mailman<wbr>/... br</blockquote</div<br</div</div</div</span></div</blockquote</div<br</div</div</body</html --_000_MWHPR11MB1663D3BF9B01DB6E1142AB1DEDDA0MWHPR11MB1663namp_--

--_000_MWHPR11MB1663B80CFB0DAD1AD0B0C09CEDDA0MWHPR11MB1663namp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Thanks Yaniv! ________________________________ From: Yaniv Kaul <ykaul(a)redhat.comSent: Wednesday, June 21, 2017 1:47:26 PM To: Deepak Jagtap Cc: Allon Mureinik; devel(a)ovirt.org Subject: Re: [ovirt-devel] Snapshots & clone support from datastore On Wed, Jun 21, 2017 at 10:28 PM, Deepak Jagtap <deepak.jagtap(a)maxta.com&lt;ma= ilto:deepak.jagtap@maxta.com>> wrote: Hi Allon, I am trying to leverage snapshot capability of underlying filesystem. As per my understanding current snapshot works like this: Base Image(raw)--->snap1(qcow)->snap2(qcow), i.e after each snapshot vm sta= rts writing on newly created qcow image. So in this case vm is going to do all new writes on snap2(qcow) voulme and = will redirect read IOs to snap1 & Base image as required. But in my case snapshots created by the filesystem are read only and it's i= n raw format. As a result after creating snapshot vm disk configuration won't change afte= r taking snapshot but will continue doing writes on same base image. So snapshots will look like this: Base Image(raw)--->snap1(raw)->snap2(raw) Base Image will always remain writable, while the snapshots will remain rea= d only raw format. Just wanted to confirm is this configurable so that vm continues referring= base image after the snapshot instead of newly created qcow image? It is not. It'll need code modification to allow externally taking snapshot= s of VM disks. Y. Thanks & Regards, Deepak ________________________________ From: Allon Mureinik <amureini@redhat.com<mailto:amureini@redhat.com>Sent: Tuesday, June 20, 2017 7:59:03 PM To: Deepak Jagtap Cc: devel@ovirt.org<mailto:devel@ovirt.orgSubject: Re: [ovirt-devel] Snapshots & clone support from datastore Not sure I understand the question. Could you give an example of what you m= ean perhpas? On Tue, Jun 20, 2017 at 10:01 PM, Deepak Jagtap <deepak.jagtap(a)maxta.com&lt;ma= ilto:deepak.jagtap@maxta.com>> wrote: Hi Allon, After going through current vdsm code base, noticed that after taking a sna= pshot vm starts referring the newly created qcow image/volume. For internal snapshots which are not qcow is it configurable somehow so th= at vm continues doing writes to same base image? Thanks & Regards, Deepak ________________________________ From: Deepak Jagtap Sent: Tuesday, June 6, 2017 3:37:03 PM To: Allon Mureinik Cc: devel@ovirt.org<mailto:devel@ovirt.orgSubject: Re: [ovirt-devel] Snapshots & clone support from datastore Thanks Allon! Best Regards, Deepak ________________________________ From: Allon Mureinik <amureini@redhat.com<mailto:amureini@redhat.com>Sent: Tuesday, June 6, 2017 2:43:17 PM To: Deepak Jagtap Cc: devel@ovirt.org<mailto:devel@ovirt.orgSubject: Re: [ovirt-devel] Snapshots & clone support from datastore Unfortunately, there's no such integration point at the moment. On Tue, Jun 6, 2017 at 5:57 AM, Deepak Jagtap <deepak.jagtap(a)maxta.com&lt;mail= to:deepak.jagtap@maxta.com>> wrote: Hey Guys, I am newbie to ovirt, and wanted to confirm whats the best way to leverage = snapshot, clone features provided by the datastore filesystem. I have a btrfs datastore exported and wanted use btrfs snapshots for vm sna= pshot & clones. Does ovirt offers any hooks/APIs so that image snapshots are created by the= filesystem? Thanks & Regards, Deepak _______________________________________________ Devel mailing list Devel@ovirt.org<mailto:Devel@ovirt.orghttp://lists.ovirt.org/mailman/listinfo/devel _______________________________________________ Devel mailing list Devel@ovirt.org<mailto:Devel@ovirt.orghttp://lists.ovirt.org/mailman/listinfo/devel --_000_MWHPR11MB1663B80CFB0DAD1AD0B0C09CEDDA0MWHPR11MB1663namp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html<head<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"= </head<body<style type=3D"text/css" style=3D"display:none;"><!-- P {margin-top:0;margi= n-bottom:0;} --></style<div id=3D"divtagdefaultwrapper" style=3D"font-size:12pt;color:#000000;font= -family:Calibri,Arial,Helvetica,sans-serif;" dir=3D"ltr"<p>Thanks Yaniv!</p</div<hr style=3D"display:inline-block;width:98%" tabindex=3D"-1"<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" st= yle=3D"font-size:11pt" color=3D"#000000"><b>From:</b> Yaniv Kaul &lt;ykaul@= redhat.com&gt;<br<b>Sent:</b> Wednesday, June 21, 2017 1:47:26 PM<br<b>To:</b> Deepak Jagtap<br<b>Cc:</b> Allon Mureinik; devel(a)ovirt.org&lt;br<b>Subject:</b> Re: [ovirt-devel] Snapshots &amp; clone support from datast= ore</font<div>&nbsp;</div</div<div<div dir=3D"ltr"><br<div class=3D"gmail_extra"><br<div class=3D"gmail_quote">On Wed, Jun 21, 2017 at 10:28 PM, Deepak Jagtap = <span dir=3D"ltr"&lt;<a href=3D"mailto:deepak.jagtap@maxta.com" target=3D"_blank">deepak.jag= tap(a)maxta.com&lt;/a&gt;&amp;gt;&lt;/span&gt; wrote:<br<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p= x #ccc solid;padding-left:1ex"<div<div id=3D"m_-9072135902178749810divtagdefaultwrapper" style=3D"font-size:1= 2pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif" dir=3D"lt= r"<p>Hi Allon,</p<p><br</p<p>I am&nbsp;trying to leverage snapshot &nbsp;capability of underlying fil= esystem.</p<p><span style=3D"font-size:12pt">As per my understanding current snapshot&= nbsp;</span><span style=3D"font-size:12pt"></span><span style=3D"font-size:= 12pt">works like this:</span></p<p>Base Image(raw)---&gt;snap1(qcow)-&gt;<wbr>snap2(qcow), i.e&nbsp;after e= ach snapshot vm starts writing on newly created qcow image.</p<p>So in this case vm is going to do all new writes on snap2(qcow) voulme a= nd will redirect read&nbsp;IOs to snap1 &amp; Base image as required.</p<p><br</p<p>But in my case snapshots created by the filesystem are read only and it'= s in raw format.</p<p>As a result after creating snapshot vm disk configuration won't change a= fter taking snapshot but will continue doing writes on same base image.</p<p>So snapshots will look like this:</p<p><span style=3D"font-family:Calibri,Arial,Helvetica,sans-serif,EmojiFont,= &quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot;,NotoColorEmoji,&qu= ot;Segoe UI Symbol&quot;,&quot;Android Emoji&quot;,EmojiSymbols;font-size:1= 6px">Base Image(raw)---&gt;snap1(raw)-&gt;<wbr>snap2(raw)</span><br</p<p><span style=3D"font-family:Calibri,Arial,Helvetica,sans-serif,EmojiFont,= &quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot;,NotoColorEmoji,&qu= ot;Segoe UI Symbol&quot;,&quot;Android Emoji&quot;,EmojiSymbols;font-size:1= 6px">Base Image will always remain writable,&nbsp;while the snapshots will = remain read only raw format.</span></p<p><br</p<p>Just wanted to confirm is this configurable so that vm continues &nbsp;r= eferring base image after the snapshot instead of newly created qcow image?= </p</div</div</blockquote<div><br</div<div>It is not. It'll need code modification to allow externally taking sna= pshots of VM disks.</div<div>Y.</div<div>&nbsp;</div<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p= x #ccc solid;padding-left:1ex"<div<div id=3D"m_-9072135902178749810divtagdefaultwrapper" style=3D"font-size:1= 2pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif" dir=3D"lt= r"<p><br</p<p>Thanks &amp; Regards,</p<p>Deepak</p<p><span style=3D"font-family:Calibri,Arial,Helvetica,sans-serif,EmojiFont,= &quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot;,NotoColorEmoji,&qu= ot;Segoe UI Symbol&quot;,&quot;Android Emoji&quot;,EmojiSymbols;font-size:1= 6px"><br</span></p<p><span style=3D"font-family:Calibri,Arial,Helvetica,sans-serif,EmojiFont,= &quot;Apple Color Emoji&quot;,&quot;Segoe UI Emoji&quot;,NotoColorEmoji,&qu= ot;Segoe UI Symbol&quot;,&quot;Android Emoji&quot;,EmojiSymbols;font-size:1= 6px"><br</span></p<p><br</p<p>&nbsp;</p</div<hr style=3D"display:inline-block;width:98%"<div id=3D"m_-9072135902178749810divRplyFwdMsg" dir=3D"ltr"><font face=3D"C= alibri, sans-serif" style=3D"font-size:11pt" color=3D"#000000"><b>From:</b>= Allon Mureinik &lt;<a href=3D"mailto:amureini@redhat.com" target=3D"_blank= &quot;&gt;amureini(a)redhat.com&lt;/a&gt;&amp;gt;&lt;br<b>Sent:</b> Tuesday, June 20, 2017 7:59:03 PM <div<div class=3D"h5"><br<b>To:</b> Deepak Jagtap<br<b>Cc:</b> <a href=3D"mailto:devel@ovirt.org" target=3D"_blank">devel@ovirt= .org</a><br<b>Subject:</b> Re: [ovirt-devel] Snapshots &amp; clone support from datast= ore</div</div</font<div>&nbsp;</div</div<div<div class=3D"h5"<div<div dir=3D"ltr"<div style=3D"font-family:monospace,monospace">Not sure I understand the qu= estion. Could you give an example&nbsp;of what you mean perhpas?</div</div<div class=3D"gmail_extra"><br<div class=3D"gmail_quote">On Tue, Jun 20, 2017 at 10:01 PM, Deepak Jagtap = <span dir=3D"ltr"&lt;<a href=3D"mailto:deepak.jagtap@maxta.com" target=3D"_blank">deepak.jag= tap(a)maxta.com&lt;/a&gt;&amp;gt;&lt;/span&gt; wrote:<br<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p= x #ccc solid;padding-left:1ex"<div<div id=3D"m_-9072135902178749810m_5891938740723837127divtagdefaultwrapper"= style=3D"font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,= sans-serif" dir=3D"ltr"<p>Hi Allon,</p<p><br</p<p>After going through&nbsp;current vdsm&nbsp;code base, noticed that after= taking a snapshot vm starts referring the newly created qcow image/volume.= </p<p>For internal snapshots which are not qcow &nbsp;is it&nbsp;configurable = somehow&nbsp;so that vm continues doing writes to same base image?</p<p><br</p<p>Thanks &amp; Regards,</p<p>Deepak</p</div<hr style=3D"display:inline-block;width:98%"<div id=3D"m_-9072135902178749810m_5891938740723837127divRplyFwdMsg" dir=3D= "ltr"><font face=3D"Calibri, sans-serif" style=3D"font-size:11pt" color=3D"= #000000"><b>From:</b> Deepak Jagtap<br<b>Sent:</b> Tuesday, June 6, 2017 3:37:03 PM<br<b>To:</b> Allon Mureinik<span><br<b>Cc:</b> <a href=3D"mailto:devel@ovirt.org" target=3D"_blank">devel@ovirt= .org</a><br<b>Subject:</b> Re: [ovirt-devel] Snapshots &amp; clone support from datast= ore</span></font<div>&nbsp;</div</div<span<div<div id=3D"m_-9072135902178749810m_5891938740723837127divtagdefaultwrapper"= style=3D"font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,= sans-serif" dir=3D"ltr"<p>Thanks Allon!</p<p><br</p<p>Best Regards,</p<p>Deepak</p</div<hr style=3D"display:inline-block;width:98%"<div id=3D"m_-9072135902178749810m_5891938740723837127divRplyFwdMsg" dir=3D= "ltr"><font face=3D"Calibri, sans-serif" style=3D"font-size:11pt" color=3D"= #000000"><b>From:</b> Allon Mureinik &lt;<a href=3D"mailto:amureini@redhat.= com" target=3D&quot;_blank&quot;&gt;amureini(a)redhat.com&lt;/a&gt;&amp;gt;&lt;br<b>Sent:</b> Tuesday, June 6, 2017 2:43:17 PM<br<b>To:</b> Deepak Jagtap<br<b>Cc:</b> <a href=3D"mailto:devel@ovirt.org" target=3D"_blank">devel@ovirt= .org</a><br<b>Subject:</b> Re: [ovirt-devel] Snapshots &amp; clone support from datast= ore</font<div>&nbsp;</div</div<div<div dir=3D"ltr"<div style=3D"font-family:monospace,monospace">Unfortunately, there's no su= ch integration point at the moment.</div</div<div class=3D"gmail_extra"><br<div class=3D"gmail_quote">On Tue, Jun 6, 2017 at 5:57 AM, Deepak Jagtap <s= pan dir=3D"ltr"&lt;<a href=3D"mailto:deepak.jagtap@maxta.com" target=3D"_blank">deepak.jag= tap(a)maxta.com&lt;/a&gt;&amp;gt;&lt;/span&gt; wrote:<br<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p= x #ccc solid;padding-left:1ex"<div dir=3D"ltr"<div id=3D"m_-9072135902178749810m_5891938740723837127m_-487324609517396822= 4divtagdefaultwrapper" style=3D"font-size:12pt;color:#000000;font-family:Ca= libri,Arial,Helvetica,sans-serif" dir=3D"ltr"<p>Hey Guys,</p<p><br</p<p>I am newbie to ovirt, and wanted to confirm whats the best way to levera= ge snapshot, clone features&nbsp;</p<p>provided by the datastore filesystem.</p<p>I have a btrfs datastore exported&nbsp;and wanted use btrfs snapshots fo= r vm snapshot &amp; clones.</p<p>Does ovirt offers any hooks/APIs so that image snapshots are created by = the filesystem?</p<p><br</p<p>Thanks &amp; Regards,</p<p>Deepak</p<p>&nbsp;</p</div</div<br______________________________<wbr>_________________<brDevel mailing list<br<a href=3D"mailto:Devel@ovirt.org" target=3D&quot;_blank&quot;&gt;Devel(a)ovirt.org&lt;/a&gt;&lt;br= <a href=3D"http://lists.ovirt.org/mailman/listinfo/devel" rel=3D"noreferrer= " target=3D"_blank">http://lists.ovirt.org/mailman<wbr>/... br</blockquote</div<br</div</div</div</span></div</blockquote</div<br</div</div</div</div</div<br______________________________<wbr>_________________<brDevel mailing list<br<a href=3D"mailto:Devel@ovirt.org">Devel@ovirt.org</a><br<a href=3D"http://lists.ovirt.org/mailman/listinfo/devel" rel=3D"noreferrer= " target=3D"_blank">http://lists.ovirt.org/<wbr>mailman/... br</blockquote</div<br</div</div</div</body</html --_000_MWHPR11MB1663B80CFB0DAD1AD0B0C09CEDDA0MWHPR11MB1663namp_--

On Thu, Jun 22, 2017 at 3:39 PM Yaniv Lavi (Dary) <ylavi(a)redhat.com&gt; wrote: Snapshots in libgfapi are not using any external process. The only difference is modifying the volume from file path (/rhev/data-center/mnt/server:path/sd_id/images/img_id/vol_id) to gluster path (volume/sd_id/images/img_id/vol_id). This modification is done when we prepare a volume. This is basically a hack since gluster connections are not managed properly in engine like other types of storage. Nir