permission denied while trying to access files over NFS

Summary:

Hi all, I am trying to back up mybook live with a few users over NFS. I haver created a Linux user pibackup (without a share) and I wanted this user to be able to read all the other users shares. All the shares are owned by group share, so I made it pibackup's primary group. However somehow I am still getting "permission denied'. Can someone please explain why permission denied, and how to fix/ work around this? Thanks! Tony

permission denied while trying to access files over NFS

integrated-pelican 15 Jan 2017 23:58

Hi all,

I am trying to set up backing up of mybook live over NFS. The NFS itself seems to be working fine, I mounted all the shares on my Linux machine. On mybook I have a few users: tony, user2, user3…

Also I have ssh access to mybook and I created a Linux user pibackup and I wanted this pibackup to have access to all shares. I made pibackup's primary group to be "share", but somehow I still get "permission denied" for pibackup, even though the Linux permissions clearly should allow group share to access the shares directories. I want to emphasize that the "permission denied" happens locally on mybook without any NFS connecitons. So it is not a problem of NFS, but rather some weird Linux permissions issue that I cannot understand.

So I am wondering, how to make user pibackup to be able to access the shares? And also I am curious, how did they block access?

To clarify my problem, here is some output from mybook live:
$ whoami pibackup $ id uid=1100(pibackup) gid=1000(share) groups=1000(share) $ pwd /shares $ ls -ld tony/ drwxrwxr-x 15 nobody share 65536 Jan 12 18:50 tony/ $ getfacl tony file: tony owner: nobody group: share user::rwx group::rwx other::r-x $ ls tony/ ls: cannot open directory tony/: Permission denied

Re: permission denied while trying to access files over NFS

integrated-pelican 16 Jan 2017 00:15

Hi,
Sorry that the code window formatting is all broken. I am actually blind and this forum is incredibly hard to navigate for a blind person.
You can find the properly formatted code on stackoverflow:
(http) unix:stackexchange:com/questions/337446/permission-denied-but-why
(Also this forum won't lent me post a URL)
(I posted the same question there)
Thanks