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Aw: Re: session trunking with NFS


today i tried it, but it didn't work:
on my nfs-test system I use the 2x1GB interfaces
showmount -e <NFS-IP1>
showmount -e <NFS-IP2>
shows me the exports
so now i mount the nfs-share on a server with 10G Interfaces(bond), when i mount it with the second NFS-IP, I got an error "mount.nfs: mount(2): Device or resource busy"

Did I something wrong?

best regards

> Gesendet: Dienstag, 26. Juni 2018 um 09:07 Uhr
> Von: Reco <recoverym4n@xxxxxxxxx>
> An: debian-user@xxxxxxxxxxxxxxxx
> Betreff: Re: session trunking with NFS
> 	Hi.
> On Tue, Jun 26, 2018 at 08:57:25AM +0200, Stefan Krueger wrote:
> > Hello,
> > 
> > so far as I know Debian stretch is shipped with NFS-Version 4.2. The RFC[1] said NFSv4.1 has the capability for sessiontrunking to speed up the performance/throughput, so my question is how can I archiv this? How to configure the NFS-server and how to mount it on the client-side? There is no hint in the manpage for this.
> The way they describe the feature at [1], it does not seem being that useful.
> Assuming that you don't need a bunch of kernel patches ([1] describes
> Debian 7.9), all you need to do is obtain an NFS server with multiple
> non-bonded network interfaces, a client with the same, and mount NFS
> share several times into the same directory.
> And all you get out of this is the ability to utilize several network
> links on both NFS client and server for a single client.
> Personally I'd rather use conventional network bonding on NFS server,
> and be done with it.
> [1] http://packetpushers.net/multipathing-nfs4-1-kvm/
> Reco