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From "John Burwell (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CLOUDSTACK-9586) When using shared storage with Xenserver prepareTemplate does not work when there are more than 1 hosts
Date Tue, 15 Nov 2016 20:38:59 GMT

     [ https://issues.apache.org/jira/browse/CLOUDSTACK-9586?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

John Burwell updated CLOUDSTACK-9586:
-------------------------------------
    Component/s: XenServer
                 Storage Controller

> When using shared storage with Xenserver prepareTemplate does not work when there are
more than 1 hosts
> -------------------------------------------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-9586
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9586
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: Storage Controller, XenServer
>    Affects Versions: 4.5.2
>         Environment: XenServer 6.5 SP1
> Local Storage
>            Reporter: Abhinandan Prateek
>            Assignee: Abhinandan Prateek
>            Priority: Critical
>             Fix For: 4.10.0.0, 4.9.1.0, 4.8.2.0
>
>
> 2016-11-09 15:05:15,876 DEBUG [c.c.h.x.r.XenServerStorageProcessor] (DirectAgent-29:ctx-8d890b55)
Failed to destroy pbd
> SR_BACKEND_FAILURE_40The SR scan failed  [opterr=['INTERNAL_ERROR', 'Db_exn.Uniqueness_constraint_violation("VDI",
"uuid", "703f59ca-6e5e-38d3-bbef-707b5b14c704")']]
> 	at com.xensource.xenapi.Types.checkResponse(Types.java:2021)
> 	at com.xensource.xenapi.Connection.dispatch(Connection.java:395)
> 	at com.cloud.hypervisor.xenserver.resource.XenServerConnectionPool$XenServerConnection.dispatch(XenServerConnectionPool.java:462)
> 	at com.xensource.xenapi.SR.scan(SR.java:1257)
> 	at com.cloud.hypervisor.xenserver.resource.Xenserver625StorageProcessor.createFileSR(Xenserver625StorageProcessor.java:113)
> 	at com.cloud.hypervisor.xenserver.resource.Xenserver625StorageProcessor.createFileSr(Xenserver625StorageProcessor.java:139)
> 	at com.cloud.hypervisor.xenserver.resource.Xenserver625StorageProcessor.copyTemplateToPrimaryStorage(Xenserver625StorageProcessor.java:173)
> Root Cause: CloudPlatform creates a SR on each host, which points to the template location
on the secondary storage (secondary_Storage/template/tmpl/<account_id>/<template_id>).
This causes the database unique constraint violation when each XenServer tries to scan the
SR created on each host. The host that scans the SR last, throws the exception because VDI
was recognized already from the SR scan of the first host.



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