Ah ok. In any case, the "mountall" package has potentially a bad
behavior with valid fuse.ceph fstab lines.

In Trusty, it's really a problem because by default Trusty uses upstart
which uses mountall to mount filesystems in fstab. For the other
distribution, I don't know. :)

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https://bugs.launchpad.net/bugs/1588594

Title:
  mountall: potential problem with fuse.ceph

Status in mountall package in Ubuntu:
  New

Bug description:
  Hi,

  Here is a perfectly valid fstab line to mount a fuse.ceph filesystem
  (it's a distributed file system but no importance here):

      id=cfs,keyring=/etc/ceph/keyring,client_mountpoint=/ /mnt/
  fuse.ceph defaults,_netdev   0   0

  But here are the arguments given to /sbin/mount.fuse.ceph by mountall:

      id=cfs,keyring=/etc/ceph/keyring,client_mountpoint= /mnt -o
  rw,_netdev

  As you can see, I have "client_mountpoint=" but it should be
  "client_mountpoint=/" (with the / at the end). The trailing "/" has
  been removed and in this case it's a bad idea. The mount at boot just
  fails because "client_mountpoint=" is not correct.

  In fact, the problem is in src/mountall.c around line 569:

      char *colon;
      dequote (mnt->device);
      /* If our device name is in host:/path format, as is
       * commonly used for network filesystems, don't strip
       * trailing slashes if this is the entire path.  We
       * look for the colon starting from the end, so that
       * we correctly handle IPv6 addresses for the host
       * part.
       */
      if ((colon = strrchr (mnt->device,':')) != NULL
          && colon[1] == '/')
          strip_slashes (colon + 2);
      else
          strip_slashes (mnt->device);  // <==== bad idea in the specific case 
of fuse.ceph filesystem

  
  It's Ubuntu Xenial with mountall version 2.54ubuntu1.

  Regards

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