Mounting cifs drive gives: mount error(22): Invalid argument
maybe this helps with this, mount error(22): Invalid argument... possible error is the
argument/s (mode) on mount command.
check your logs on the errors encountered.
tail -f /var/log/kern.logremove the invalid argument
Another possible cause is the presence of sec=ntlm in /etc/fstab and it's incompatibility with newer SMB protocols like SMB3.
While not the OP's case, this can also cause mount error(22): Invalid argument errors, as it did for me after upgrading an old server.
Even though kern.log includes a suggestion to specify vers=1.0 on mount, it may be safer to remove or change sec=ntlm instead. Perhaps use the defaults to allow automatic negotiation of the SMB version and security, or specify compatible options such as vers=3.0,sec=ntlmssp.
Obviously this depends on your SMB server's features, but I would try and avoid vers=1.0 unless necessary.
I had the same issue on Arch Linux, with this message in log:
kernel: CIFS VFS: cifs_mount failed w/return code = -22
For me the solution was to specify older version of cifs (by default it was 3.0):
/etc/fstab:
//my-router/share /media/share cifs ver="2.1",rw,soft,uid=ele,gid=ele,file_mode=0770,dir_mode=0770,credentials=/etc/router-credentials.conf 0 0