[clug] NFSv4 "Invalid argument"

[Peter Barker]

On Mon, 13 Oct 2014, George at Clug wrote:


Could be this bug in wheezy:

http://comments.gmane.org/gmane.org.user-groups.linux.luv.general/3169

Peter


> I am unable to understand how NFS works with user permissions.  Does
> anyone have experience with NFS shares in Debian Wheezy and could
> explain to me how to manage user permissions for an NFS share ? Maybe
> it is not even needed?
>
> I searched the Internet but did not find anything useful, I did find
> mentions of libnss-mysql and nfs4_disable_idmapping but I could not
> find any detail on how this related to Debian.
>
> # umount 192.168.0.12:/mnt/vg2/vol1/san12_nfs_ds1/kvm-images/images
>
> # mount -t nfs  -v
> 192.168.0.12:/mnt/vg2/vol1/san12_nfs_ds1/kvm-images/images
> /var/lib/libvirt/images
> mount.nfs: timeout set for Mon Oct 13 20:42:13 2014
> mount.nfs: trying text-based options
> 'vers=4,addr=192.168.0.12,clientaddr=192.168.0.137'
>
> # chown root:root
> /var/lib/libvirt/images/ISO/debian-7.5.0-amd64-DVD-1.iso 
> chown: changing ownership of
> `/var/lib/libvirt/images/ISO/debian-7.5.0-amd64-DVD-1.iso': Invalid
> argument
>
> # ls -al /var/lib/libvirt/images/ISO
> total 11143136
> drwxr-sr-x 2 nobody nogroup       4096 Oct 11 08:50 .
> drwx--s--x 3 nobody nogroup       4096 Oct 11 09:45 ..
> -rw-r--r-- 1 nobody nogroup 3938795520 Oct 11 08:49
> debian-7.5.0-amd64-DVD-1.iso
>
> I also tried the following;
> # umount 192.168.0.12:/mnt/vg2/vol1/san12_nfs_ds1/kvm-images/images
>
> # mount -t nfs -o
> auto,noatime,nolock,bg,nfsvers=3,intr,tcp,actimeo=1800  -v
> 192.168.0.12:/mnt/vg2/vol1/san12_nfs_ds1/kvm-images/images
> /var/lib/libvirt/images
> mount.nfs: trying text-based options
> 'nolock,bg,nfsvers=3,intr,tcp,actimeo=1800,addr=192.168.0.12'
> mount.nfs: prog 100003, trying vers=3, prot=6
> mount.nfs: trying 192.168.0.12 prog 100003 vers 3 prot TCP port 2049
> mount.nfs: prog 100005, trying vers=3, prot=6
> mount.nfs: trying 192.168.0.12 prog 100005 vers 3 prot TCP port 33224
>
> # chown root:root
> /var/lib/libvirt/images/ISO/debian-7.5.0-amd64-DVD-1.iso chown:
> changing ownership of
> `/var/lib/libvirt/images/ISO/debian-7.5.0-amd64-DVD-1.iso': Operation
> not permitted
>
>
>
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Peter Barker                          |   Programmer,Sysadmin,Geek.
pbarker at barker.dropbear.id.au	      |   You need a bigger hammer.
:: It's a hack! Expect underscores! - Nigel Williams