I have been trying now for several days to get my new server up and running. I am running CentOS with MergerFS to pool my drives and samba to host to my windows machines. All of this running in Proxmox as well.

Over the weekend I got a couple of hard drives to start my server out with and am unable to get the shares to work correctly with samba. I have narrowed down the issue and it is being caused by labels. SELinux requires my mergerfs pool to have a label of samba_share_t but for some reason, mergerfs is not letting me change it from fusefs_t. All of my drives are ext4, I am seeing a lot of posts online that say this can be caused by using ntfs but that can't be my issue.

Things I have tried:

  • I have attempted to modify the fstab to include an option to set the context to samba_share_t, but when I do that I get an error say that fuse (used by mergerfs) init does not support the option "content".
  • I have tried manually changing the label of the pool with chcon and I get an error that the operation is not supported.

  • I have tried adding the pool folder with semange and then manually running restorecon and it still doesn't make a change to that specific folder.

Windows being able to see the folder but not able to access it is such a tease, so close yet so far away. If possible, I would like to not have to disable SELinux.

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    I don't think you can put SELinux labels on a FUSE filesystem. People using NTFS under Linux would have the same problem since the NTFS driver uses FUSE. – Gilles 'SO- stop being evil' Mar 14 '16 at 23:15
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    Found that out with tons of google digging, and wanted to confirm you are right. Thanks. – soax Mar 15 '16 at 0:47

I was able to resolve the issue with just a simple setting change

setsebool -P samba_share_fusefs=1

and then restarting the smb service.

| improve this answer | |
  • Thank you! I would probably just have disabled SELinux, your solution is better. – Smith Oct 14 '19 at 17:29

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