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  1. Lustre
  2. LU-957

LFSCK fix Object Index for MDT file-level backup/restore for lustre-2.x

Details

    • New Feature
    • Resolution: Fixed
    • Major
    • Lustre 2.3.0
    • Lustre 2.3.0
    • 55
    • 4300

    Description

      Lustre-1.6 and Lustre-1.8 series support MDT file-level backup/restore. But such function does not work on Lustre-2.x yet. Because Lustre-2.x introduces Object Index (OI) file for global FID to MDT local identifier mapping, which is different from Lustre-1.6/1.8. Such OI file will become invalid after MDT file-level backup/restore.

      This Phase I project will have LFSCK rebuild the OI file after MDT file-level backup/restore to make it workable as Lustre-1.6/1.8 series do.

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          [Confluence: Whamcloud Community Space] Lustre Community Development in Progress Features are being developed for future Lustre releases both at Whamcloud and by other organizations in the Lustre community. These will be eligible for inclusion in future Lustre releases as per our processes

          Activity

            [LU-957] LFSCK fix Object Index for MDT file-level backup/restore for lustre-2.x
            rhenwood Richard Henwood (Inactive) made changes -
            Attachment New: LFSCK_Phase_I_Milestone_Completion.pdf [ 12006 ]
            rhenwood Richard Henwood (Inactive) added a comment -

            Demonstration Document

            rhenwood Richard Henwood (Inactive) added a comment - Demonstration Document
            rhenwood Richard Henwood (Inactive) made changes -
            Attachment New: opensfs-InodeIteratorandOIScrubScopeStatement-301012-1359-23.pdf [ 12004 ]
            yong.fan nasf (Inactive) made changes -
            Fix Version/s New: Lustre 2.3.0 [ 10117 ]
            Resolution New: Fixed [ 1 ]
            Status Original: In Progress [ 3 ] New: Resolved [ 5 ]
            yong.fan nasf (Inactive) added a comment -

            All patches have been landed to Lustre-2.3

            yong.fan nasf (Inactive) added a comment - All patches have been landed to Lustre-2.3
            yong.fan nasf (Inactive) made changes -
            Attachment New: Inode_Iteration-and-OI_Scrub.pdf [ 11476 ]
            yong.fan nasf (Inactive) added a comment -

            Presentation for LFSCK phase I

            yong.fan nasf (Inactive) added a comment - Presentation for LFSCK phase I
            jlevi Jodi Levi (Inactive) made changes -
            Attachment New: OI_Scrub-TP[2].doc [ 11461 ]
            yong.fan nasf (Inactive) added a comment -

            In the patch http://review.whamcloud.com/#change,1910,set24, it has partly implemented rebuilding OI files from the case of remove-recreate, which much decrease the test time for large file set (at least 50% time saved). For those corner cases (some replay ops and NFS re-exported), will be processed in LU-1383 in the future.

            yong.fan nasf (Inactive) added a comment - In the patch http://review.whamcloud.com/#change,1910,set24 , it has partly implemented rebuilding OI files from the case of remove-recreate, which much decrease the test time for large file set (at least 50% time saved). For those corner cases (some replay ops and NFS re-exported), will be processed in LU-1383 in the future.

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              yong.fan nasf (Inactive)
              yong.fan nasf (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: