Re-opening the thread 16 years later. I encountered a similar - but even
weirder - behaviour on Lubuntu 26.04.
I document three ways to set up on-demand connection to samba share. 1st
works fully (requiring 2 passwords each time), 2nd works with the weird
caveat (requiring remote password), 3rd doesn't seem to work (but if it
worked, it wouldn't require typing any password).
I hope this can be useful to somebody, and perhaps it even helps fix or
better document the CIFS mount.
[Please replace SERVER, REMOTEDIR, MNTPNT, dominecf, USER, 12345 with
your own strings.]
(CASE 1) To get through network, I set up SSH connection:
ssh -L 4450:localhost:445 USER@SERVER -N
Then I can connect explicitly, entering local+remote passwords:
sudo mount -t cifs //localhost/REMOTEDIR /home/dominecf/MNTPNT/ -o
username=USER,vers=3.0,port=4450,uid=$(id -u),gid=$(id
-g),file_mode=0644,dir_mode=0755
This works 100%, but it is awkward because of the two passwords.
(CASE 2) To remove the need for `sudo` password, I can add a new
/etc/fstab entry:
//localhost/REMOTEDIR /home/dominecf/MNTPNT cifs
noauto,user,username=USER,vers=3.0,port=4450,uid=1234,gid=1234,file_mode=0644,dir_mode=0755
This entry can be then directly mounted.
One important observation: there may be *NO TRAILING SPACES* in fstab.
The line may or may not contain the " 0 0" entries, but again, never let
whitespace after them. Otherwise you get "mount error(13): Permission
denied" and dmesg tells you nothing about the real reason either:
[109988.383664] CIFS: Attempting to mount //localhost/REMOTEDIR
[109988.791938] CIFS: Status code returned 0xc000006d STATUS_LOGON_FAILURE
[109988.791983] CIFS: VFS: \\localhost failed to create a new SMB session with
Unknown: -13
[109988.792045] CIFS: VFS: cifs_mount failed w/return code = -13
So the quite good solution here is to "mount MNTPNT" and always enter
remote password. It's also safer than case 3 because no credentials are
stored anywhere.
(CASE 3) In my unsuccessful attempt of logging in entirely without entering a
password, I took a minor security risk and make a ~/.smbcreds file containing
my remote username and password, setting its permissions=600 as a little
privacy measure. E.g.:
username=USER
password=12345
Then I changed the corresponding line in /etc/fstab to use the .smbcreds file,
e.g.,
//localhost/REMOTEDIR /home/dominecf/MNTPNT cifs
noauto,user,credentials=/home/dominecf/.smbcreds,vers=3.0,port=4450,uid=1000,gid=1000,file_mode=0644,dir_mode=0755
and no matter what I tried, I got the error 13 as above.
So the second important observation is that cifs mount failed *always*
when pointed to credentials file. I am pretty much sure I used the
correct username and password both when logging in, and when saving the
file. It would be useful if somebody could replicate this behaviour, and
perhaps get some debugging.
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https://bugs.launchpad.net/bugs/543094
Title:
mount error 13 - permisison denied when mounting samba shares on
ubuntu server using cifs
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