"J. Bruce Fields" <bfields@xxxxxxxxxxxx> wrote on 2013/12/16 21:03:01: > From: "J. Bruce Fields" <bfields@xxxxxxxxxxxx> > To: Joakim Tjernlund <joakim.tjernlund@xxxxxxxxxxxx>, > Cc: linux-nfs@xxxxxxxxxxxxxxx, steved@xxxxxxxxxx > Date: 2013/12/16 21:03 > Subject: Re: nfs-utils-1.2.9 does not play well with linux 3.10.x > > On Mon, Dec 16, 2013 at 01:54:19PM -0500, bfields wrote: > > On Mon, Dec 16, 2013 at 07:16:00PM +0100, Joakim Tjernlund wrote: > > > rpc.nfsd insists on adding "-4.2" when writing /proc/fs/nfsd/versions : > > > rpc.nfsd: Writing version string to kernel: +4.1 -4.2 -2 +3 +4 > > > Which causes Linux to return an EIVAL error as 3.10 has no support for 4.2 > > > and > > > does not accept any reference to 4.2 > > > > > > It seems reasonable to me that Linux should accpect -4.2 as a noop and > > > continue > > > processing the rest of the options but I am just guessing. > > > Anyhow, just to test I applied this commit to my 3.10.24 kernel: > > > > > > http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4bdc33ed5bd9fbaa243bda6fdccb22674aed6305 > > > and now it accepts the "-4.2" but I have no idea if this messes up > > > something else. > > > > That should be perfectly safe. Thanks, I will keep this then until nfs-utils is working. > > > > I agree that we should teach the kernel to treat "-4.x" at least as a > > no-op for unknown .x. But nfs-utils also has to keep working with older > > kernels which don't do that. > > > > The problem was introduced by 12a590f8d556c00a9502eeebaa763d906222d521 > > "rpc.nfsd: Allow v4.2 server support with the -V option". That should > > be using an array of ints not a bit array, so it can make the > > distinction between "off", "on", and "don't care". > > So, something like this (untested).--b. I tested this on my system(which has the above kernel patch) and I noticed a difference: rpc.nfsd: Writing version string to kernel: -2 +3 +4 which is different than previous rpc.nfsd: Writing version string to kernel: +4.1 -4.2 -2 +3 +4 The "+4.1" is missing. Jocke -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
