The tcpdump is telling me the server responds to the mount request with:

Accept State: remote can't support version # (2)
Program version (Minimum): 3
Program version (Maximum): 4

-- 
Russell Senior
[email protected]

On Wed, Dec 18, 2024 at 6:03 AM Russell Senior
<[email protected]> wrote:
>
> My kernel config in /boot/config-5.10.0-33-amd64 has
> "CONFIG_NFSD_V2=y" ... which makes me think there is a configuration
> that has disabled v2 support despite it being available.
>
> --
> Russell Senior
> [email protected]
>
> On Wed, Dec 18, 2024 at 5:48 AM Russell Senior
> <[email protected]> wrote:
> >
> > ... but my debian 11 server seems (according to my packet capture) to
> > only support NFSv3 and NFSv4. Does anyone happen to know how to enable
> > NFSv2 on nfs-kernel-server for this device? Or have any other
> > suggested solutions to this problem?
> >
> > The device is an ancient Soekris net4826 from the mid-aughts. It has
> > soldered on flash storage, so the only way to recover from crashing
> > firmware is to netboot. My setup *used to* work. It's getting DHCP
> > information for PXE booting, TFTP's a kernel, but when the kernel
> > attempts to mount an nfs rootfs, the mount fails and it kernel panics.
> > We have one of them still in service in the field (and I have another
> > one sitting in my test bed, crashing).
> >
> > The right solution is probably just to retire the one in the field and
> > put the whole lot of them into a "museum box", but hey, it's the
> > holidays. What better period to waste a bunch of time keeping creaking
> > hardware alive. And anyway, the museum curators will be more thrilled
> > to create an exhibit if they have working firmware.
> >
> > Thanks for any clues, meanwhile I'll keep searching the interwebs.
> >
> > --
> > Russell Senior
> > [email protected]

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