<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial"><br>thanks,i know a little more. but i do not understand fully. &nbsp;distrubute filesystem &nbsp;is more understandable.<div style="font-family: Helvetica, 'Microsoft Yahei', verdana;">specially,,for SAN(iscsi,fc) &nbsp;it is hard to share luns between nodes(not reliable), even use LVM,CLVM.</div><div style="font-family: Helvetica, 'Microsoft Yahei', verdana;"><br></div><div style="font-family: Helvetica, 'Microsoft Yahei', verdana;">would you explain it ( SAN case)?and it is hard to connect '<span style="white-space: pre-wrap; line-height: 1.7;">local&nbsp;directory</span><span style="line-height: 1.7;">' with distrbuted repo.</span></div><div style="font-family: Helvetica, 'Microsoft Yahei', verdana;"><br><br>thanks.<br></div><div><br></div><br><br><br><div></div><div id="divNeteaseMailCard"></div><br><pre><br>At&nbsp;2013-02-27&nbsp;17:55:45,"Gianluca&nbsp;Cecchi"&nbsp;&lt;gianluca.cecchi@gmail.com&gt;&nbsp;wrote:
&gt;On&nbsp;Wed,&nbsp;Feb&nbsp;27,&nbsp;2013&nbsp;at&nbsp;10:44&nbsp;AM,&nbsp;bigclouds&nbsp;&nbsp;wrote:
&gt;&gt;&nbsp;there&nbsp;is&nbsp;a&nbsp;sentense&nbsp;'Implements&nbsp;a&nbsp;distributed&nbsp;image&nbsp;repository&nbsp;over&nbsp;the
&gt;&gt;&nbsp;supported&nbsp;storage&nbsp;types&nbsp;(local&nbsp;directory,&nbsp;FCP,&nbsp;FCoE,&nbsp;iSCSI,&nbsp;NFS,&nbsp;SAS)
&gt;&gt;&nbsp;'&nbsp;&nbsp;on&nbsp;http://www.ovirt.org/Architecture.
&gt;&gt;
&gt;&gt;&nbsp;what&nbsp;is&nbsp;"distributed&nbsp;image&nbsp;repository"?
&gt;&gt;
&gt;&gt;&nbsp;thanks.
&gt;
&gt;Example
&gt;I&nbsp;have&nbsp;a&nbsp;test&nbsp;environment&nbsp;where&nbsp;a&nbsp;Host&nbsp;is&nbsp;connected&nbsp;to&nbsp;several&nbsp;FCP&nbsp;LUNs.
&gt;Each&nbsp;LUN&nbsp;becomes&nbsp;a&nbsp;storage&nbsp;domain&nbsp;for&nbsp;this&nbsp;host&nbsp;and&nbsp;the&nbsp;other&nbsp;hosts&nbsp;in
&gt;the&nbsp;same&nbsp;cluster.
&gt;So&nbsp;I&nbsp;have&nbsp;many&nbsp;VMs&nbsp;whose&nbsp;images&nbsp;resides&nbsp;on&nbsp;different&nbsp;storage&nbsp;domains
&gt;(and&nbsp;so&nbsp;different&nbsp;LUNs).
&gt;I&nbsp;can&nbsp;move&nbsp;a&nbsp;disk&nbsp;of&nbsp;a&nbsp;VM&nbsp;from&nbsp;a&nbsp;storage&nbsp;domain&nbsp;to&nbsp;another&nbsp;one.
&gt;I&nbsp;think&nbsp;you&nbsp;can&nbsp;also&nbsp;have&nbsp;a&nbsp;mixed&nbsp;situation&nbsp;where&nbsp;a&nbsp;two&nbsp;disks'&nbsp;VM&nbsp;has
&gt;one&nbsp;disk&nbsp;on&nbsp;a&nbsp;storage&nbsp;domain&nbsp;and&nbsp;the&nbsp;other&nbsp;one&nbsp;in&nbsp;another.
&gt;
&gt;So&nbsp;I&nbsp;think&nbsp;it&nbsp;is&nbsp;to&nbsp;be&nbsp;explained&nbsp;this&nbsp;way&nbsp;the&nbsp;&nbsp;"distributed&nbsp;image&nbsp;repository".
&gt;
&gt;And&nbsp;also&nbsp;"distributed"&nbsp;in&nbsp;the&nbsp;sense&nbsp;of&nbsp;different&nbsp;storage&nbsp;domain&nbsp;types,
&gt;even&nbsp;if&nbsp;I&nbsp;think&nbsp;at&nbsp;this&nbsp;time&nbsp;one&nbsp;DC&nbsp;cannot&nbsp;have&nbsp;a&nbsp;mix&nbsp;of&nbsp;different
&gt;storage&nbsp;domain&nbsp;types...
&gt;
&gt;Gianluca
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