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Hi, I came across strange "mount" problem on nfs server -- it refuses to mount it's own directory while other nfs clients able mount nfs server exported directory just fine 1. nfs server name: install.myclub.com OS: wheeze (Debian) ip: 192.168.0.62 /etc/exports: /export/home 192.163.0.0/24(rw,subtree_check) drxwrxwrxw /export/home 2. client1 name: meteor.myclub.com OS: Valhalla (Red Hat 7.3) ip: 192.168.0.1 mount -t nfs install:myclub.com:/export/home /mnt mounts directory without any error 3. client2 name: moon.myclub.com OS: squeeze (Debian) ip: 192.168.0.64 mount -t nfs install:myclub.com:/export/home /mnt mounts directory without any error 4. client3 (nfs server itself) name: install.myclub.com OS: wheeze (Debian) ip: 192.168.0.62 mount -t nfs 192.168.0.62:/export/home /mnt mounts directory without any error 5. client4 (nfs server itself) name: install.myclub.com OS: wheeze (Debian) ip: 192.168.0.62 mount -t nfs install:/export/home /mnt mounts fails with an error mount -v -t nfs install:/export/home /mnt mount.nfs: timeout set for Thu Apr 24 01:21:36 2014 mount.nfs: trying text-based options 'vers=4,addr=127.0.1.1,clientaddr=127.0.0.1' mount.nfs: mount(2): Permission denied mount.nfs: access denied by server while mounting install:/export/home mount -v -t nfs install.myclub.com:/export/home /mnt mount.nfs: timeout set for Thu Apr 24 01:22:50 2014 mount.nfs: trying text-based options 'vers=4,addr=127.0.1.1,clientaddr=127.0.0.1' mount.nfs: mount(2): Permission denied mount.nfs: access denied by server while mounting install.myclub.com:/export/home The error indicates that when I attempt to mount by using FQDN of nfs server -- the name resolves to 127.0.1.1 and client resolves to 127.0.0.1 . cat /etc/hosts 127.0.0.1 localhost 127.0.1.1 install.myclub.com install If I modify /etc/hosts to cat /etc/hosts 127.0.0.1 localhost #127.0.1.1 install.myclub.com install then mount -v -t nfs install.myclub.com:/export/home /mnt mount.nfs: timeout set for Thu Apr 24 01:29:50 2014 mount.nfs: trying text-based options 'vers=4,addr=192.168.0.62,clientaddr=192.168.0.62' mounts directory without any error, while mount -v -t nfs install:/export/home /mnt mount.nfs: timeout set for Thu Apr 24 01:29:27 2014 mount.nfs: trying text-based options 'vers=4,addr=127.0.0.1,clientaddr=127.0.0.1' mount.nfs: mount(2): Permission denied mount.nfs: access denied by server while mounting install:/export/home I do not recall when a record "127.0.1.1" appear in /etc/hosts (Squeezy and Wheeze both have it) for first time, it is default record added during installation. I puzzled and run out of ideas why nfs server is not able to mount own exported directory. I see that "mount" tries to mount through loopback and for some inexplicable to me reason it fails. Why does it happen? What am I missing? https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=719621 --- Quote ------------------------------------------------------ The IP address 127.0.1.1
in the second line of this example may not be found on some other
Unix-like systems. The Debian
Installer creates this entry for a system without a
permanent IP address as a workaround for some software (e.g.,
GNOME) as documented in the bug #719621.--- End of Quote ----------------------------------------------- Thank you for any clue how this problem can be fixed. Andy |