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From "Fang Wang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-2904) After volume migration on Vmware, taking a snapshot, and then volume migration fails on this new volume
Date Wed, 26 Jun 2013 22:32:20 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-2904?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13694317#comment-13694317
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Fang Wang commented on CLOUDSTACK-2904:
---------------------------------------

step1: 
before taking the snapshot on the migrated vol:
[root@nfs2 primary2]# cd i-2-10-VM/
[root@nfs2 i-2-10-VM]# ls -lt
total 1394692
-rw------- 1 root root   67117056 Jun 26 15:08 ROOT-10-15-000001-delta.vmdk
-rw------- 1 root root        322 Jun 13 16:27 ROOT-10-15-000001.vmdk
-rw------- 1 root root  201334784 Jun 13 16:27 ROOT-10-15-delta.vmdk
-rw------- 1 root root        337 Jun 13 15:02 ROOT-10-15.vmdk
-rw------- 1 root root        517 Jun 13 15:02 657640660f7a36b6a839e90dc1c8e74b.vmdk
-rw------- 1 root root 2147483648 Jun 13 15:02 657640660f7a36b6a839e90dc1c8e74b-flat.vmdk

step 2, take a snapshot, 
after the snapshot is taken:
[root@nfs2 primary2]# cd i-2-10-VM/
[root@nfs2 i-2-10-VM]# ls -lt
total 1244596
-rw------- 1 root root   67117056 Jun 26 15:26 ROOT-10-15-000001-delta.vmdk
-rw------- 1 root root        367 Jun 26 15:15 ROOT-10-15-000001.vmdk
-rw------- 1 root root 2147483648 Jun 26 15:15 657640660f7a36b6a839e90dc1c8e74b-flat.vmdk
-rw------- 1 root root        517 Jun 26 15:15 657640660f7a36b6a839e90dc1c8e74b.vmdk
[root@nfs2 i-2-10-VM]#

step 3: migrate the vol, the vol of the snpshot:
migrate from primary2  ---> primary1, UI specify the only available storage is primary1,
click ok;

the vol still stays at the primary2 storage, though it says "task complete". check the contents,
it still stays at primary2.

The rror scenerio is different from what I saw before: it silently completes the task, but
did not carry it out. instead of an exception

                
> After volume migration on Vmware, taking a snapshot, and then volume migration fails
on this new volume
> -------------------------------------------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-2904
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-2904
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>         Environment: master build, or vmware-storage-migration branch with Vmware host
>            Reporter: Fang Wang
>            Assignee: Fang Wang
>            Priority: Critical
>
> Create a simple VM with a root volume. 
> Migrate the root volume to another primary storage.  
> we see four vmdk files getting created in the VM folder on the new primary. 
> Two are uuid-delta.vmdk and uuid.vmdk style files. The other two are the ROOT-x-y-delta.vmdk
and ROOT-x-y.vmdk files. 
> take a snapshot of the root volume via the cloudstack GUI. What we see is that the ROOT-x-y*
files are getting deleted from the VM folder in the new primary. Additionally, the VM’s
root disk is getting changed to the other uuid.vmdk file.  
> when we now attempt to migrate this volume again, it will fail saying that it cannot
find the ROOT-x-y disk. 

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