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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-9025) Unable to deploy VM instance from template if template spin from linked clone snapshot
Date Wed, 15 Nov 2017 19:55:00 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-9025?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16254060#comment-16254060
] 

ASF GitHub Bot commented on CLOUDSTACK-9025:
--------------------------------------------

mike-tutkowski commented on a change in pull request #2315: A comprehensive solution for #CLOUDSTACK-9025.
URL: https://github.com/apache/cloudstack/pull/2315#discussion_r151234607
 
 

 ##########
 File path: engine/schema/src/com/cloud/host/dao/HostDao.java
 ##########
 @@ -103,4 +95,13 @@
     List<HostVO> listByType(Type type);
 
     HostVO findByIp(String ip);
+
+    /**
+     * This method will look for a host that is connected to the storage pool where the volume
of the Snapshot is stored.
+     * <ul>
+     * <li>If the storage pool found for the volume of the snapshotId has more than
a host, we will choose one randomly;
+     * <li>If no host is found, we throw a runtime exception
+     * </ul>
+     */
+    HostVO findHostToOperateOnSnapshot(long snapshotId);
 
 Review comment:
   One workaround I already have in place, though, is the following (currently only supported
on XenServer): You can pass in a parameter when taking the volume snapshot that tells us to
put the volume snapshot on secondary storage instead of keeping it on primary storage. If,
however, you have already created the snapshot on primary storage, then you'd need to create
a volume from it and then snapshot that volume to secondary storage.

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> Unable to deploy VM instance from template if template spin from linked clone snapshot
> --------------------------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-9025
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9025
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: XenServer
>    Affects Versions: 4.5.2
>         Environment: XenServer 6.5
>            Reporter: Anshul Gangwar
>            Assignee: Anshul Gangwar
>            Priority: Critical
>             Fix For: 4.6.0
>
>
> As default, CloudStack create linked clone snapshot for VM instance . When we take a
snapshot for the VM, and create a template based on such snapshot, CloudStack only download
incremental VHD as template file, as a result, the VM instance fail to deploy as it is incomplete.



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