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  1. Lustre
  2. LU-11583

unsupported incompat LMA feature(s) 0xffffffe1

Details

    • Bug
    • Resolution: Unresolved
    • Major
    • None
    • Lustre 2.10.5
    • None
    • 2
    • 9223372036854775807

    Description

      During mounting mdt we see this error

       [  414.268802] Lustre: 9986:0:(osd_handler.c:371:osd_get_lma()) dm-1: unsupported incompat LMA feature(s) 0xffffffe1 for fid = [0x0:0x20af:0x2], ino = 153397641

      what does it mean?

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          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-11584 kernel BUG at ldiskfs.h:1907!

          • Critical - Crashes, loss of data, severe memory leak.
          • Resolved

          Activity

            [LU-11583] unsupported incompat LMA feature(s) 0xffffffe1
            adilger Andreas Dilger added a comment -

            I'm going to reopen this issue to track fixing the "unsupported incompat LMA" issue, which is different from the "cannot precreate objects: rc = -116" issue in LU-11584, and needs a separate fix.

            adilger Andreas Dilger added a comment - I'm going to reopen this issue to track fixing the " unsupported incompat LMA " issue, which is different from the " cannot precreate objects: rc = -116 " issue in LU-11584 , and needs a separate fix.
            pjones Peter Jones added a comment -

            ok - thanks

            pjones Peter Jones added a comment - ok - thanks
            mhanafi Mahmoud Hanafi added a comment -

            close case. I removed the bad file.

            mhanafi Mahmoud Hanafi added a comment - close case. I removed the bad file.
            adilger Andreas Dilger added a comment -

            It looks like the "lma" xattr on the MDT for this inode is corrupted. Unfortunately, this isn't something that LFSCK can fix automatically, since the whole point of those flags is to prevent LFSCK from modifying inodes that have features it doesn't understand.

            Given that the inode doesn't have a proper Lustre FID either (which is itself stored in the LMA xattr), one option is to just delete this xattr from the MDT filesystem directly, by mounting it as type ldiskfs and then running "setfattr -x trusted.lma /mnt/XXX/ROOT/path/to/file". If the file itself has no useful data it could just be deleted entirely.

            adilger Andreas Dilger added a comment - It looks like the " lma " xattr on the MDT for this inode is corrupted. Unfortunately, this isn't something that LFSCK can fix automatically, since the whole point of those flags is to prevent LFSCK from modifying inodes that have features it doesn't understand. Given that the inode doesn't have a proper Lustre FID either (which is itself stored in the LMA xattr), one option is to just delete this xattr from the MDT filesystem directly, by mounting it as type ldiskfs and then running " setfattr -x trusted.lma /mnt/XXX/ROOT/path/to/file ". If the file itself has no useful data it could just be deleted entirely.
            pjones Peter Jones added a comment -

            This seems likely related to LU-11584

            pjones Peter Jones added a comment - This seems likely related to LU-11584

            People

              dongyang Dongyang Li
              mhanafi Mahmoud Hanafi
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              Dates

                Created:
                Updated: