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  1. CloudStack
  2. CLOUDSTACK-9586

When using local storage with Xenserver prepareTemplate does not work with multiple primary store

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Details

    • Bug
    • Status: Resolved
    • Critical
    • Resolution: Fixed
    • 4.5.2
    • 4.9.1.0, 4.8.2.0, 4.10.1.0
    • Security Level: Public (Anyone can view this level - this is the default.)
    • None
    • XenServer 6.5 SP1
      Local Storage

    Description

      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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            aprateek Abhinandan Prateek
            aprateek Abhinandan Prateek
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