sxfs: double sxfs entries when mounting a filesystem

[yerrysherry]

Hallo,

When creating a new filesystem with sxfx and the mountpoint is empty then you can mount the filesystem multiple times.

root@poc-s3-skylable-client-1:~# cat /etc/fstab
LABEL=cloudimg-rootfs / ext4 defaults 0 0
sx://poc-s3-skylable-client-1@mycluster/poc-s3-skylable-client-1-disk-1 /opt/tomcat fuse.sxfs _netdev,fsname=sxfs,use_queues 0 0

root@poc-s3-skylable-client-1:~# mount -a
*** It is recommended to always use --logfile together with --use-queues ***
Using default tempdir: /var/tmp/sxfs-20170201163835-BC7UXZ
*** It is recommended to always use --logfile when not running in the foreground ***
Using default cache size of 512M in '/var/tmp/sxfs-20170201163835-BC7UXZ'

root@poc-s3-skylable-client-1:~# mount | grep sxfs
sxfs on /opt/tomcat type fuse (rw,relatime,user_id=0,group_id=0)

root@poc-s3-skylable-client-1:~# mount -a
*** It is recommended to always use --logfile together with --use-queues ***
Using default tempdir: /var/tmp/sxfs-20170201163912-FYlVmY
*** It is recommended to always use --logfile when not running in the foreground ***
Using default cache size of 512M in '/var/tmp/sxfs-20170201163912-FYlVmY'

root@poc-s3-skylable-client-1:~# mount | grep sxfs
sxfs on /opt/tomcat type fuse (rw,relatime,user_id=0,group_id=0)
sxfs on /opt/tomcat type fuse (rw,relatime,user_id=0,group_id=0)

root@poc-s3-skylable-client-1:~# umount /opt/tomcat
root@poc-s3-skylable-client-1:~# mount | grep sxfs
sxfs on /opt/tomcat type fuse (rw,relatime,user_id=0,group_id=0)
root@poc-s3-skylable-client-1:~#

Regards,
Gerrit