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  1. Lustre
  2. LU-9860

conf-sanity test_33a fails with “mount -t lustre failed“ for separate MDS and MGS

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: Lustre 2.11.0
    • Fix Version/s: None
    • Labels:
    • Environment:
      Separate MGS and MDS or separate MGT and MDT
    • Severity:
      3
    • Rank (Obsolete):
      9223372036854775807

      Description

      conf-sanity test 33a fails when run on a Lustre file system configured with a separate MDS and MGS, even with a separate MDT and MGT on the same node. The error message is

      conf-sanity test_33a: @@@@@@ FAIL: mount -t lustre failed 
      

      In the test log, we see that mounting the MDS for the newly created file system fails

      CMD: onyx-50vm7 mkdir -p /mnt/lustre-fs2mds; mount -t lustre   		                   /dev/lvm-Role_MDS/S1 /mnt/lustre-fs2mds
      onyx-50vm7: mount.lustre: mount /dev/mapper/lvm--Role_MDS-S1 at /mnt/lustre-fs2mds failed: Operation already in progress
      onyx-50vm7: The target service is already running. (/dev/mapper/lvm--Role_MDS-S1)
      

      This failure looks like it is due to the mgs flags used when the MDT is formatted; “—mgs” flag. When an MGS already exists, specifying that this node will be the MGS for the new file system causes problems.

      In addition, the lctl call in the following code needs to be run on the MGS

      2418         do_facet $SINGLEMDS "$LCTL conf_param $FSNAME2.sys.timeout=200" ||
      2419                 error "$LCTL conf_param $FSNAME2.sys.timeout=200 failed"
      

      We see similar failures for conf-sanity tests 43b, 53b, 54b

      Logs that capture test 33a failures are at
      https://testing.hpdd.intel.com/test_sets/5176f130-729c-11e7-a0a2-5254006e85c2
      https://testing.hpdd.intel.com/test_sets/8df40f4c-729e-11e7-a0a2-5254006e85c2

      Note: This tickets description was modified to state the problem more clearly and not only subscribe a solution.

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              • Assignee:
                jamesanunez James Nunez
                Reporter:
                jamesanunez James Nunez
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                Dates

                • Created:
                  Updated:
                  Resolved: