[gentoo-user] Re: New wireless adapter breaks nfs exports

[walt <w41ter@gmail.com>]

On 10/15/2014 12:57 PM, Tom H wrote:
> On Tue, Oct 7, 2014 at 7:39 PM, walt <w41ter@gmail.com> wrote:
>> On 10/05/2014 08:31 PM, Tom H wrote:
>>> On Sat, Oct 4, 2014 at 2:52 PM, walt <w41ter@gmail.com> wrote:
>>>>
>>>> This machine (my nfsv3 file server) just got a new wireless adapter, which
>>>> works fine for everything except serving files :(
>>>>
>>>> mount.nfs: requested NFS version or transport protocol is not supported
>>>>
>>>> google shows me lots about slow nfs connections over wireless but nothing
>>>> about non-support. I'm using only nfs3 ATM because I've had so many problems
>>>> with nfs4 in the past. I thought I'd ask here if nfs4 might fix the problem
>>>> before changing everything.
>>>
>>> NFS works over wifi.
>>>
>>> Have you tried mounting with "-v" and/or "-o nfsvers=3"?
>>
>> Yes, about 30 seconds ago :)
>>
>> #mount -v -t nfs -o nfsvers=3 a6://usr/portage /mnt
>> mount.nfs: timeout set for Tue Oct  7 16:35:39 2014
>> mount.nfs: trying text-based options 'nfsvers=3,addr=192.168.1.75'
>> mount.nfs: prog 100003, trying vers=3, prot=6
>> mount.nfs: trying 192.168.1.75 prog 100003 vers 3 prot TCP port 2049
>> mount.nfs: prog 100005, trying vers=3, prot=17
>> mount.nfs: trying 192.168.1.75 prog 100005 vers 3 prot UDP port 36168
>> mount.nfs: mount(2): Protocol not supported
>> mount.nfs: Protocol not supported
>>
>> I have nfsv4 working correctly so the urgency is gone but I'm still
>> curious if nfsv3 really should work over wifi as well as nfsv4.
> 
> Both nfsv3 and nfsv4 work over wifi.
> 
> Do both the client's and the server's kernels have nfsv3 enabled?
> 
> From the output above I'd check the client's kernel config.

The problem turned out to be incorrect nfs useflags, not kernel config, and
nfsv3 is working now, thanks much.