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Date: Thu, 11 Jun 2026 11:52:43 +0200
Message-ID: <CA+1jF5oaRmga=6N8WGgh_GCkM7m+QRG_1NzgWHm89DyNSGoavw@mail.gmail.com>
Subject: Re: Cygwin: /usr/bin/mount with UNC path does not work
To: cygwin AT cygwin DOT com
From: =?utf-8?q?Aur=C3=A9lien_Couderc_via_Cygwin?= <cygwin AT cygwin DOT com>
Reply-To: =?UTF-8?Q?Aur=C3=A9lien_Couderc?= <aurelien DOT couderc2002 AT gmail DOT com>
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On Thu, Jun 11, 2026 at 2:01 AM Takashi Yano via Cygwin
<cygwin AT cygwin DOT com> wrote:
>
> On Thu, 11 Jun 2026 07:57:34 +0900
> Takashi Yano wrote:
> > On Wed, 10 Jun 2026 20:32:44 +0200
> > Aurélien Couderc wrote:
> > > On Wed, Jun 10, 2026 at 3:04 PM Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp> wrote:
> > > >
> > > > On Wed, 10 Jun 2026 14:46:42 +0200
> > > > Aurélien Couderc wrote:
> > > > > Cygwin:
> > > > >
> > > > > /usr/bin/mount with UNC path does not work on Cygwin 3.7 (todays version).
> > > > >
> > > > > Example:
> > > > > mkdir nfsdata
> > > > > /usr/bin/mount  '\\66 DOT 9 DOT 20 DOT 44 AT NFS@2049\nfspool' $PWD/nfspool
> > > > >
> > > > > But $PWD/nfspool is empty then, while ls -l
> > > > > //66 DOT 9 DOT 20 DOT 44 AT NFS@2049/nfspool shows directory content.
> > > > >
> > > > > What am I doing wrong?
> > > >
> > > > /usr/bin/mount //66 DOT 9 DOT 20 DOT 44 AT NFS@2049/nfspool
> > >
> > > No, that only prints:
> > > mount: can't find //66 DOT 9 DOT 20 DOT 44 AT NFS@2049/nfspool in /etc/fstab or in
> > > /etc/fstab.d/$USER
> >
> > Ah, sorry. I meant:
> >
> > > I also tried
> > > mkdir nfspool
> > > /usr/bin/mount  '//66 DOT 9 DOT 20 DOT 44 AT NFS@2049/nfspool' $PWD/nfspool
> >
> > of cource.
> >
> > > that succeeded, but a cd nfspool then fails.
> >
> > Any error message?
>
> BTW, what does "@NFS AT 2049" mean?

That is an UNC tag, like WebDAV uses. NFS defines the
protocol/transport, 2049 is the default NFS UDP/TCP port number.

> Do you use some third party NFS client
> on your windows?

The driver is ms-nfs41-client, that is the only free Windows NFS
driver left since the Microsoft NFS driver no longer works: Linux
distributions depreciated NFSv3 server support, and the Microsoft NFS
driver only supports NFSv3.

Aurélien
-- 
Aurélien Couderc <aurelien DOT couderc2002 AT gmail DOT com>
Big Data/Data mining expert, chess enthusiast

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