I have a faulty server where a CIFS is mounted each time a user logs in. When several users are connected, this duplicates the mount points, leading to this:

$ mount | grep opt\/cifs\/Dev
//example.com/Dev on /opt/cifs/Dev type cifs (rw,relatime,vers=1.0,sec=krb5i,cache=strict,username=john.doe,    uid=340401129,forceuid,gid=340400513,forcegid,addr=,file_mode=0755,dir_mode=0755,nounix,serverino,mapposix,rsize=61440,wsize=16580,actimeo=1)
//example.com/Dev on /opt/cifs/Dev type cifs (rw,relatime,vers=1.0,sec=krb5i,cache=strict,username=donald.trump,uid=340401173,forceuid,gid=340400513,forcegid,addr=,file_mode=0755,dir_mode=0755,nounix,serverino,mapposix,rsize=61440,wsize=16580,actimeo=1)

I'd like to know how I can umount a single entry. I saw the umount --test-opts but could not find any example on the web.


Try umount -l This detaches filesystem without unmounting it

  • it unmounts one of them indeed. More specifically I wanted to know if I could unmount one given the user, e.g. unmounting just the one owned by john.doe – m-ric Nov 28 '18 at 15:32

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