UNIX for Dummies Questions & Answers

Two AIX 5.3 machines. On the first a file system is exported, on second it is mounted (NFS). The problem is when i want to create/write a file on a mounted file system:

Code:

The file system has read permission only.
ksh[2]: testfile1: 0403-005 Cannot create the specified file.

The permission for this FS is 777, so... And, that is worse, there it is a third machine where that FS is already mounted and no problem with permissions.

Franci

Check again how it was exported (look at /etc/exports...)
Then check the permissions (and ownership...) on the underlying mount point (the mount point directory without the mount...)

I've checked the underlying mount point. It is ... 777 and my group, too.
But, the funny thing is that even root cannot create the file.
On other site /export/ it has been done the same for both nodes where I want to mount that FS.
And I cannot find out where it is the difference. On one node is ok, on other that I add today, not ok

are you sure that the nfs share is read-write and not read-only?
do you see (rw) in your /etc/exports file?
for nfs, default is read-only if you do not mention any.

This is from /etc/exports:

Code:

/temp -anon=0,sec=sys,rw=node1:node2,root=node1:node2

And the mount point is done exactly equal (properties) on both nodes. But as said, on first you can write, on second one not.
Mistery

then, as mentioned earlier by vbe, in his words: what were the permissions and ownership of the underlying mount point (the mount point directory without the mount)?
were they same at both machines?

The permissions and ownership of the underlying mount point are exactly the same on both nodes.
I also restart daemon nfsd. On node that exports and on target node2. No use.
So, finally I changed "Mode to export directory" from "read-mostly" to "read-write" and clear 'hostname list'. Now it works.
But this thing still bothers me. Why it had worked on one node and not on another. Anyway, thanks for help.