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Error: The SR Backend failed to complete the operation

Posted on 2009-07-14
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Last Modified: 2013-11-11
I keep randomly getting this error message when performing almost any operation requiring accessing my shared storage (creating VMs, starting VMs, installing hosts, etc). The SR is set up to connect via iSCSI to a volume on my NexSAN SATABeast. Anyone have any clues how to resolve this?
xe sr-list params=all excerpt:

uuid ( RO)                    : 0262540f-0d05-b31f-595f-a4d72ff19f17

              name-label ( RW): iSCSI virtual disk storage

        name-description ( RW): iSCSI SR [172.16.2.41 (iqn.1999-02.com.nexsan:p0:satabeast:01611238)]

                    host ( RO): <shared>

      allowed-operations (SRO): forget; VDI.create; VDI.snapshot; plug; update; destroy; VDI.destroy; scan; VDI.clone; VDI.resize; unplug

      current-operations (SRO): 

                    VDIs (SRO): ccd8c8cb-0ce5-4307-ab16-cc5922f9dde7; e427cbaf-6e80-414c-bb3f-f9de0fbaf69f; 302b475c-467b-4023-ba49-7c00d4d99463

                    PBDs (SRO): 7c8a0994-98c3-258b-1755-134600124879; 36504d0f-a812-8d05-9d25-53ce76356f0d

      virtual-allocation ( RO): 134502940672

    physical-utilisation ( RO): 343253450752

           physical-size ( RO): 1023988989952

                    type ( RO): lvmoiscsi

            content-type ( RO): 

                  shared ( RW): true

            other-config (MRW): auto-scan: false

               sm-config (MRO): allocation: thick; use_vhd: true; multipathable: true; devserial: scsi-36000402001fc12386369373200000000

                   blobs ( RO):

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Question by:rpassero
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The problem was related to DNS/routing settings on one of my hosts...which is why the error only appeared sometimes, when that particular server was attempting to do the provisioning.
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