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Summary



Intermittently, the in-line verification process of Advanced Client jobs hangs or runs slowly.

Symptoms



From time to time, the in-line verification process of Advanced Client hangs or runs very slowly. One of the possible reasons is a teaming NIC configuration, another or fastpath setup on a destination filer (7Mode only). In one specific case, the primary DPX client node attempted to run a job with a teaming NIC configuration and the verification process took about 5 hours.

You can identify this problem using the primary DPX client node's mapper logs (*.mpr) files, which are located in the <DPX installation directory>/logs/ directory. Should this problem occur, the mapper logs would include the following message:

Thu Jan 31 09:00:50 2008 SNBMPR3066D 5000: Processing Command: TOK_SNAP_VERIFY_LUN on socket(7)

Thu Jan 31 14:04:20 2008 SNBMPR3066D 5000: compare_sums() comparing (17) elements

Thu Jan 31 14:04:20 2008 SNBMPR3066D 5000: compare_sums() comparing(68) bytes



Resolution



To resolve this issue:

  1. Determine if the DPX client node's NIC configuration is teaming. If not, the issue is not related to this article and should be addressed using other methods.
  2. If your destination filer is 7 mode - verify IP configuration of the destination filer node by running the below command on the filer:

    options ip.fastpath.enable
     
  3. If the output of the options command is "on", run the following command:

    options ip.fastpath.enable off
     

If not the output of the options command is not on, the issue is not related to this article and should be addressed using other methods.