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  1. Lustre
  2. LU-6386

lower transno may overwrite the bigger one in client last_rcvd slot

Details

    • Bug
    • Resolution: Fixed
    • Critical
    • Lustre 2.8.0
    • None
    • None
    • 3
    • 9223372036854775807

    Description

      The tgt_last_rcvd_update() may update transaction number in client slot with smaller value. That may cause client to see wrong error message:

      LustreError: 3662:0:(import.c:985:ptlrpc_connect_interpret()) pfs2dat1-OST000a_UUID went back in time (transno 77492683762 was previously committed, server now claims 77492683761)! See https://bugzilla.lustre.org/show_bug.cgi?id=9646

      This is possible on OST with several IO requests from one client and safe but it is better to keep transaction value in last_rcvd monotonically increased to avoid confusion on client side.

      Attachments

        Issue Links

          is related to

          New Feature - A new feature of the product, which has yet to be developed. LU-5319 Support multiple slots per client in last_rcvd file

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          mentioned in

          [Whamcloud Community Wiki] Page Page No Confluence page found with the given URL.

          [Whamcloud Community Wiki] Page Page No Confluence page found with the given URL.

          Activity

            [LU-6386] lower transno may overwrite the bigger one in client last_rcvd slot
            mdiep Minh Diep made changes -
            Link New: This issue is related to JFC-20 [ JFC-20 ]
            mdiep Minh Diep made changes -
            Link Original: This issue is related to JFC-17 [ JFC-17 ]
            pjones Peter Jones made changes -
            Link Original: This issue is related to LDEV-370 [ LDEV-370 ]
            pjones Peter Jones made changes -
            Link New: This issue is related to LDEV-301 [ LDEV-301 ]
            jgmitter Joseph Gmitter (Inactive) made changes -
            Remote Link Original: This issue links to "Page (HPDD Community Wiki)" [ 15886 ] New: This issue links to "Page (HPDD Community Wiki)" [ 15886 ]
            pjones Peter Jones made changes -
            Link New: This issue is related to JFC-17 [ JFC-17 ]
            pjones Peter Jones made changes -
            Link Original: This issue is related to LDEV-301 [ LDEV-301 ]
            pjones Peter Jones made changes -
            Link New: This issue is related to LDEV-370 [ LDEV-370 ]
            jgmitter Joseph Gmitter (Inactive) made changes -
            Link Original: This issue is related to JFC-15 [ JFC-15 ]
            jgmitter Joseph Gmitter (Inactive) made changes -
            Link Original: This issue is related to LDEV-36 [ LDEV-36 ]

            People

              tappro Mikhail Pershin
              tappro Mikhail Pershin
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              Dates

                Created:
                Updated:
                Resolved: