Re: [PATCH] mount: make sure mounting nfs with v4,vers=4 and nfsvers=4

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On Mon, 13 Apr 2015, Kinglong Mee wrote:

> On 4/13/2015 8:16 PM, Benjamin Coddington wrote:
> > Hi Kinglong,  I can't seem to figure out how to reproduce your problem, and
> > I don't see show this change fixes it.  Your mount is falling back to a v3
> > attempt without this patch?  What's set in nfsmount.conf?
>
> Sorry for my missing notes for nfsmount.conf.
> My nfsmount.conf is default config,
> besides [ NFSMount_Global_Options ], others line are commented by "#",
> Defaultvers isn't set as, "# Defaultvers=4"
>
> thanks,
> Kinglong Mee

Yes, I see the problem now.   The version strings were stripped and never
added back in the general case.  Thank you.  This looks right.

Reviewed-by: Benjamin Coddington <bcodding@xxxxxxxxxx>

> > On Sun, 12 Apr 2015, Kinglong Mee wrote:
> >
> >> When mounting nfs with -ov4, -overs=4 or -onfsvers=4, fail as,
> >>
> >> # mount -t nfs -ov4 192.168.31.12:/ /testidr/
> >> mount.nfs: access denied by server while mounting 192.168.31.12:/
> >>
> >> Fixes: f980298853 "mount.nfs: configurable minor version defaults"
> >> Signed-off-by: Kinglong Mee <kinglongmee@xxxxxxxxx>
> >> ---
> >>  utils/mount/stropts.c | 12 +++---------
> >>  1 file changed, 3 insertions(+), 9 deletions(-)
> >>
> >> diff --git a/utils/mount/stropts.c b/utils/mount/stropts.c
> >> index df67fac..2ae532e 100644
> >> --- a/utils/mount/stropts.c
> >> +++ b/utils/mount/stropts.c
> >> @@ -108,12 +108,6 @@ static void nfs_default_version(struct nfsmount_info *mi)
> >>  		return;
> >>  	}
> >>
> >> -	if (mi->version.v_mode == V_GENERAL &&
> >> -		config_default_vers.v_mode == V_DEFAULT) {
> >> -		mi->version.v_mode = V_SPECIFIC;
> >> -		return;
> >> -	}
> >> -
> >>  	if (mi->version.v_mode == V_DEFAULT &&
> >>  		config_default_vers.v_mode != V_DEFAULT) {
> >>  		mi->version.major = config_default_vers.major;
> >> @@ -121,9 +115,9 @@ static void nfs_default_version(struct nfsmount_info *mi)
> >>  		return;
> >>  	}
> >>
> >> -	if (mi->version.v_mode == V_GENERAL &&
> >> -		config_default_vers.v_mode != V_DEFAULT) {
> >> -		if (mi->version.major == config_default_vers.major)
> >> +	if (mi->version.v_mode == V_GENERAL) {
> >> +		if (config_default_vers.v_mode != V_DEFAULT &&
> >> +		    mi->version.major == config_default_vers.major)
> >>  			mi->version.minor = config_default_vers.minor;
> >>  		return;
> >>  	}
> >> --
> >> 2.3.5
> >>
> >>
> >
> --
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