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  1. Lustre
  2. LU-17995

In-memory OSD device

Details

    • New Feature
    • Resolution: Unresolved
    • Minor
    • None
    • None
    • None
    • 3
    • 9223372036854775807

    Description

      Implement a simple in-memory OSD device for Lustre. This enables Lustre servers to be run without any backing filesystem, such as ldiskfs or openZFS.

      The main goal of this OSD is to make it easier to test Lustre on kernels which don't readily ldiskfs or openZFS. It will also make it simpler to set up a new Lustre dev environment, since many changes to Lustre do not depend on a particular filesystem.

       

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        Issue Links

          is blocked by

          Improvement - An improvement or enhancement to an existing feature or task. LU-18545 Autotest doesn't install OSD packages when using fstype=mem

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

          New Feature - A new feature of the product, which has yet to be developed. LU-18813 memory FS based OSD with write-back support

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

          Task - A task that needs to be done. LU-17848 OSD and dt cleanups / deduplication

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

          Task - A task that needs to be done. LU-18162 Improve lu_device/obd_device handling and Lustre mount state machine

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Open
          is related to

          Improvement - An improvement or enhancement to an existing feature or task. LU-18766 In-memory OSD sparse file handling

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

          Activity

            [LU-17995] In-memory OSD device
            adilger Andreas Dilger made changes -
            Issue Type Original: Improvement [ 4 ] New: New Feature [ 2 ]
            timday Tim Day made changes -
            Link New: This issue is related to LU-18813 [ LU-18813 ]
            gerrit Gerrit Updater added a comment -

            "Oleg Drokin <green@whamcloud.com>" merged in patch https://review.whamcloud.com/c/fs/lustre-release/+/58174/
            Subject: LU-17995 obdclass: remove obdname2fsname()
            Project: fs/lustre-release
            Branch: master
            Current Patch Set:
            Commit: c40370698e32aafba5c0323f957bd700e3353cd9

            gerrit Gerrit Updater added a comment - "Oleg Drokin <green@whamcloud.com>" merged in patch https://review.whamcloud.com/c/fs/lustre-release/+/58174/ Subject: LU-17995 obdclass: remove obdname2fsname() Project: fs/lustre-release Branch: master Current Patch Set: Commit: c40370698e32aafba5c0323f957bd700e3353cd9
            gerrit Gerrit Updater added a comment -

            "Oleg Drokin <green@whamcloud.com>" merged in patch https://review.whamcloud.com/c/fs/lustre-release/+/58163/
            Subject: LU-17995 osd-zfs: remove server_name_is_ost()
            Project: fs/lustre-release
            Branch: master
            Current Patch Set:
            Commit: 4a7b1f6ad3e3f4c0dec35210b50240826fc4e8a2

            gerrit Gerrit Updater added a comment - "Oleg Drokin <green@whamcloud.com>" merged in patch https://review.whamcloud.com/c/fs/lustre-release/+/58163/ Subject: LU-17995 osd-zfs: remove server_name_is_ost() Project: fs/lustre-release Branch: master Current Patch Set: Commit: 4a7b1f6ad3e3f4c0dec35210b50240826fc4e8a2
            timday Tim Day made changes -
            Link New: This issue is related to LU-18766 [ LU-18766 ]
            gerrit Gerrit Updater added a comment -

            "Timothy Day <timday@amazon.com>" uploaded a new patch: https://review.whamcloud.com/c/fs/lustre-release/+/58174
            Subject: LU-17995 obdclass: remove obdname2fsname()
            Project: fs/lustre-release
            Branch: master
            Current Patch Set: 1
            Commit: 3bd06be6c011dd932f2570503b565a1189a7246f

            gerrit Gerrit Updater added a comment - "Timothy Day <timday@amazon.com>" uploaded a new patch: https://review.whamcloud.com/c/fs/lustre-release/+/58174 Subject: LU-17995 obdclass: remove obdname2fsname() Project: fs/lustre-release Branch: master Current Patch Set: 1 Commit: 3bd06be6c011dd932f2570503b565a1189a7246f
            gerrit Gerrit Updater added a comment -

            "Timothy Day <timday@amazon.com>" uploaded a new patch: https://review.whamcloud.com/c/fs/lustre-release/+/58163
            Subject: LU-17995 osd-zfs: remove server_name_is_ost()
            Project: fs/lustre-release
            Branch: master
            Current Patch Set: 1
            Commit: e155e4eaec94f6329ba7a280077b33c9ec7e57dd

            gerrit Gerrit Updater added a comment - "Timothy Day <timday@amazon.com>" uploaded a new patch: https://review.whamcloud.com/c/fs/lustre-release/+/58163 Subject: LU-17995 osd-zfs: remove server_name_is_ost() Project: fs/lustre-release Branch: master Current Patch Set: 1 Commit: e155e4eaec94f6329ba7a280077b33c9ec7e57dd
            gerrit Gerrit Updater added a comment -

            "Oleg Drokin <green@whamcloud.com>" merged in patch https://review.whamcloud.com/c/fs/lustre-release/+/57336/
            Subject: LU-17995 libcfs: implement libcfs_subsystem_debug
            Project: fs/lustre-release
            Branch: master
            Current Patch Set:
            Commit: 627c4b2b93484818f13c3e7158593ae0c097bf6c

            gerrit Gerrit Updater added a comment - "Oleg Drokin <green@whamcloud.com>" merged in patch https://review.whamcloud.com/c/fs/lustre-release/+/57336/ Subject: LU-17995 libcfs: implement libcfs_subsystem_debug Project: fs/lustre-release Branch: master Current Patch Set: Commit: 627c4b2b93484818f13c3e7158593ae0c097bf6c
            timday Tim Day made changes -
            Link New: This issue is blocked by LU-18545 [ LU-18545 ]
            gerrit Gerrit Updater added a comment -

            "Timothy Day <timday@amazon.com>" uploaded a new patch: https://review.whamcloud.com/c/fs/lustre-release/+/57336
            Subject: LU-17995 libcfs: implement libcfs_subsystem_debug
            Project: fs/lustre-release
            Branch: master
            Current Patch Set: 1
            Commit: 9ec8bfce24b204fa74086d52e18e4c71b843bc42

            gerrit Gerrit Updater added a comment - "Timothy Day <timday@amazon.com>" uploaded a new patch: https://review.whamcloud.com/c/fs/lustre-release/+/57336 Subject: LU-17995 libcfs: implement libcfs_subsystem_debug Project: fs/lustre-release Branch: master Current Patch Set: 1 Commit: 9ec8bfce24b204fa74086d52e18e4c71b843bc42

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              timday Tim Day
              timday Tim Day
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              Dates

                Created:
                Updated: