Can anyone suggest what might be wrong as root user cannot write to the
NFS mounted directory.
At client, the mount succeeds, but write doesn't. The 'no_root_squash'
is enabled at server, the UUID's match, so where is the problem[1]?.
Jari
AT CLIENT (192.168.1.12 / Debian unstable)
$ dpkg -l nfs-common
ii nfs-common 1:1.1.3-1
$ mount 192.168.1.7:/mnt/local/storage/share/src /mnt/tmp
<ok, no errors>
$ mount | grep 1.7
192.168.1.7:/mnt/local/storage/share/src on /mnt/tmp type nfs
(rw,addr=192.168.1.7)
$ ls -l /mnt/tmp
drwxrwsr-x 4 root src 4096 2008-08-24 20:28 .
$ id -a
uid=0(root) gid=0(root) groups=0(root)
$ touch /mnt/tmp/test.tmp
touch: cannot touch `/mnt/tmp/test.tmp': Permission denied
AT SERVER (192.168.1.7 / Debian testing)
- Version
$ dpkg -l nfs-kernel-server
ii nfs-kernel-server 1:1.1.2-6
- /etc/exports contains 'no_root_squash' which should allow root access
/mnt/local/storage/share/src
192.168.1.0/27(rw,sync,no_root_squash,no_subtree_check)
- How Kernel sees the exports (after "exportfs -rav"):
$ cat /proc/fs/nfs/exports
# Version 1.1
# Path Client(Flags) # IPs
/mnt/local/storage/share/src
192.168.1.0/27(rw,no_root_squash,sync,wdelay,no_subtree_check,uuid=d16a2f42:9a504489:a7888624:c832a7f3)
$ showmount -e | grep src
/mnt/local/storage/share/src 192.168.1.0/27
- identity and write test
$ id -a
uid=0(root) gid=0(root) groups=0(root)
$ touch /mnt/local/storage/share/src/test.tmp
$ ls -la /mnt/local/storage/share/src/test.tmp
-rw-r--r-- 1 root src 0 2008-08-24 20:52
/mnt/local/storage/share/src/test.tmp
$ rm /mnt/local/storage/share/src/test.tmp
- Directory permissions
$ ls -la /mnt/local/storage/share/src
drwxrwsr-x 4 root src 4096 2008-08-24 20:28 .
- No service restrictions
$ cat /etc/hosts.allow
<empty>
$ cat /etc/hosts.deny
<empty>
- No firewalls
$ iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
[1]
I've read all of this, but it doesn't explain what's missing here.
"I do not have permission to access files on the mounted volume"
http://nfs.sourceforge.net/nfs-howto/ar01s07.html
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