Date: Tue, 20 Jan 2015 18:34:15 -0500 (EST) From: Rick Macklem <rmacklem@uoguelph.ca> To: =?utf-8?B?TcOkcms=?= Owen <markowen2206@gmail.com> Cc: freebsd-stable@freebsd.org Subject: Re: NFS "mount system call failed" Message-ID: <2096124637.17646377.1421796855627.JavaMail.root@uoguelph.ca> In-Reply-To: <20150120164409.49403c6e@MARC-THINKPAD.queenland>
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Mark Owen wrote:
> Hi everyone,
>
> I'm using FreeBSD 10.1 to share a ZFS pool (mounted at
> /media/storage)
> through NFS to Linux clients (Debian 7). I don't seem to get any
> errors
> when the nfs services start on FreeBSD but I can't mount the shares
> on
> the clients, all I get is: mount.nfs4: mount system call failed
> (Tried
> as NFSv3 and NFSv4, same result).
>
> I'm really frustrated here since It worked barely an hour ago and I
> have absolutely no idea why I getting this error now.
>
Well, here's a couple of comments:
1 - Look in /var/log/messages for any errors generated by mountd or nfsd
on the FreeBSD server.
2 - Make sure the daemons (mountd and nfsd) are running, via "ps axHl".
3 - It appears you have exported the file system "read-only", but are
trying to mount it read/write. (I'm not sure this would produce an
error at mount time or just if/when the client tries to write to
the file server?)
4 - If nothing above helps, use "tcpdump -s 0 -w xxx.pcap host <client.host>"
on the server to capture packets during a mount attempt and then look at
xxx.pcap in wireshark (since it understands NFS). This will show you what
interaction is going on between client<->server and may give you the hint
as to what is broken.
rick
> Anyway, here are my /etc/rc.conf and /etc/exports files from the
> server:
>
> /etc/rc.conf
> ...
> ## ZFS
> zfs_enable="YES"
> ## NFSv4 Server
> nfs_server_enable="YES"
> nfsv4_server_enable="YES"
> rpcbind_enable="YES"
> mountd_enable="YES"
> mountd_flags="-r"
> #rpc_lockd_enable="YES"
> #rpc_statd_enable="YES"
>
> /etc/exports (I tried both as NFSv3 and NFSv4, here are the two
> options)
> -NFSv3:
> /media/storage/data -ro -alldirs -network 192.168.1.0 -mask
> 255.255.255.0
>
> -NFSv4:
> V4:/media/storage -network 192.168.1.0 -mask 255.255.255.0
> /media/storage/data -ro -alldirs -network 192.168.1.0 -mask
> 255.255.255.0
>
>
> On the clients I use the following commands to try to mount the
> share:
> - NFSv3: mount -t nfs -o nolock server-ip:/media/storage/data
> /mnt/tmp
> - NFSv4: mount -t nfs4 server-ip:/data /mnt/tmp
>
> Thank you for reading and I hope that someone will be able to help
> me.
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