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Problem with nfs sharing, permission denied for writing.

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Operating Systems Solaris Problem with nfs sharing, permission denied for writing.
# 36  
Old 07-03-2010
Quote:
Originally Posted by jlliagre
It tells that any user that would be mapped to the NFS anonymous user is actually mapped to root will all the security issues that this imply. Anyone being root is normally mapped to anonymous to prevent abuse. This setting is telling remote users logged as root will keep their access rights on the share. You might want to limit the read/write access to a list of well known servers.
And always mount the file system with the "nosuid" option.

---------- Post updated at 02:26 PM ---------- Previous update was at 02:19 PM ----------

If the problem is with NFSv4 and you still want to try the "root=@..." option, try mounting the file system as NFSv3:

Code:
mount -F nfs -o vers=3 ...

If that works, you can just change /etc/default/nfs on all your hosts to set the max NFS version to 3. In my experience, NFSv4 is often more trouble than it's worth.

(And if you ever deal with large files - bigger than 2gb - ALWAYS do what's necessary to make sure NFS clients can not mount NFSv2, which isn't large-file-aware. I've actually seen two cases where the version negotiation when a file system was mounted failed back to version 2, making files larger than 2gb "invsible". Either modify /etc/default/nfs to remove version 2 as the minimum option by making it 3, or specify the version you want in your mount options.)
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