Does Kernel HWE 4.18.0-13 support overlay nfs_export=on?












0















I have a problem nfs exporting an overlay of btrfs and ext4. The overlay works, but even though it is mounted with nfs_export=on I get the error message:



exportfs: /data/merged does not support NFS export


this is my export:
/data/merged 192.168.0.0/255.255.255.0(ro,fsid=1,async,insecure,crossmnt)



uname -a = 4.18.0-13-generic #14~18.04.1-Ubuntu SMP Thu Dec 6 14:09:52 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux



So how can I find out if the nfs_export feature is supported by that kernel? Generally it was introduced in 4.16 ...










share|improve this question



























    0















    I have a problem nfs exporting an overlay of btrfs and ext4. The overlay works, but even though it is mounted with nfs_export=on I get the error message:



    exportfs: /data/merged does not support NFS export


    this is my export:
    /data/merged 192.168.0.0/255.255.255.0(ro,fsid=1,async,insecure,crossmnt)



    uname -a = 4.18.0-13-generic #14~18.04.1-Ubuntu SMP Thu Dec 6 14:09:52 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux



    So how can I find out if the nfs_export feature is supported by that kernel? Generally it was introduced in 4.16 ...










    share|improve this question

























      0












      0








      0








      I have a problem nfs exporting an overlay of btrfs and ext4. The overlay works, but even though it is mounted with nfs_export=on I get the error message:



      exportfs: /data/merged does not support NFS export


      this is my export:
      /data/merged 192.168.0.0/255.255.255.0(ro,fsid=1,async,insecure,crossmnt)



      uname -a = 4.18.0-13-generic #14~18.04.1-Ubuntu SMP Thu Dec 6 14:09:52 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux



      So how can I find out if the nfs_export feature is supported by that kernel? Generally it was introduced in 4.16 ...










      share|improve this question














      I have a problem nfs exporting an overlay of btrfs and ext4. The overlay works, but even though it is mounted with nfs_export=on I get the error message:



      exportfs: /data/merged does not support NFS export


      this is my export:
      /data/merged 192.168.0.0/255.255.255.0(ro,fsid=1,async,insecure,crossmnt)



      uname -a = 4.18.0-13-generic #14~18.04.1-Ubuntu SMP Thu Dec 6 14:09:52 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux



      So how can I find out if the nfs_export feature is supported by that kernel? Generally it was introduced in 4.16 ...







      kernel nfs btrfs overlayfs






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      share|improve this question











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      share|improve this question










      asked Jan 20 at 11:43









      wuppiwuppi

      17814




      17814






















          1 Answer
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          To check if the overlay module support the NFS feature you can run modinfo overlay.



          root@host:~# modinfo overlay | grep nfs
          parm: nfs_export:bool
          parm: ovl_nfs_export_def:Default to on or off for the NFS export feature


          That should print lines containing NFS. Additionally you have to enable other overlay features as well.





          • -o index=on


          • -o index=on -o redirect_dir=nofollow when there is no upperdir






          share|improve this answer
























          • got it. feature is availble and additional options make that work :)

            – wuppi
            Jan 20 at 15:29











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          oldest

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          1














          To check if the overlay module support the NFS feature you can run modinfo overlay.



          root@host:~# modinfo overlay | grep nfs
          parm: nfs_export:bool
          parm: ovl_nfs_export_def:Default to on or off for the NFS export feature


          That should print lines containing NFS. Additionally you have to enable other overlay features as well.





          • -o index=on


          • -o index=on -o redirect_dir=nofollow when there is no upperdir






          share|improve this answer
























          • got it. feature is availble and additional options make that work :)

            – wuppi
            Jan 20 at 15:29
















          1














          To check if the overlay module support the NFS feature you can run modinfo overlay.



          root@host:~# modinfo overlay | grep nfs
          parm: nfs_export:bool
          parm: ovl_nfs_export_def:Default to on or off for the NFS export feature


          That should print lines containing NFS. Additionally you have to enable other overlay features as well.





          • -o index=on


          • -o index=on -o redirect_dir=nofollow when there is no upperdir






          share|improve this answer
























          • got it. feature is availble and additional options make that work :)

            – wuppi
            Jan 20 at 15:29














          1












          1








          1







          To check if the overlay module support the NFS feature you can run modinfo overlay.



          root@host:~# modinfo overlay | grep nfs
          parm: nfs_export:bool
          parm: ovl_nfs_export_def:Default to on or off for the NFS export feature


          That should print lines containing NFS. Additionally you have to enable other overlay features as well.





          • -o index=on


          • -o index=on -o redirect_dir=nofollow when there is no upperdir






          share|improve this answer













          To check if the overlay module support the NFS feature you can run modinfo overlay.



          root@host:~# modinfo overlay | grep nfs
          parm: nfs_export:bool
          parm: ovl_nfs_export_def:Default to on or off for the NFS export feature


          That should print lines containing NFS. Additionally you have to enable other overlay features as well.





          • -o index=on


          • -o index=on -o redirect_dir=nofollow when there is no upperdir







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Jan 20 at 13:36









          ThomasThomas

          3,77981527




          3,77981527













          • got it. feature is availble and additional options make that work :)

            – wuppi
            Jan 20 at 15:29



















          • got it. feature is availble and additional options make that work :)

            – wuppi
            Jan 20 at 15:29

















          got it. feature is availble and additional options make that work :)

          – wuppi
          Jan 20 at 15:29





          got it. feature is availble and additional options make that work :)

          – wuppi
          Jan 20 at 15:29


















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