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[139.178.88.99]) by mx.google.com with ESMTPS id 41be03b00d2f7-682275b0a14si4614345a12.253.2024.05.26.04.28.02 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 04:28:02 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-nfs+bounces-3384-linux.lists.archive=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) client-ip=139.178.88.99; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=OoDixn5t; arc=pass (i=1 dkim=pass dkdomain=kernel.org); spf=pass (google.com: domain of linux-nfs+bounces-3384-linux.lists.archive=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) smtp.mailfrom="linux-nfs+bounces-3384-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sv.mirrors.kernel.org (Postfix) with ESMTPS id BF2842810C8 for ; Sun, 26 May 2024 11:28:01 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id CA96FB669; Sun, 26 May 2024 11:28:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="OoDixn5t" X-Original-To: linux-nfs@vger.kernel.org Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A2B2B9454 for ; Sun, 26 May 2024 11:28:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716722880; cv=none; b=kyn1uZJ1wZ1RSvyFUvbCmHIVBCVm4cyPbEyzFEy3sJvKcGfJaYsU8TAl+2hsnLR5hVHF7KTT0jkNh7/R4hZ0g7AY9cJSwdx7cJsnWBRl6HxM8iiUyUp87WoLOrBYQr83sRFo3YYFrq6CrmKv7mH5+dqCXfsr/pAoHog6e4UjEoA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716722880; c=relaxed/simple; bh=GmMSVJ7/NdnOxfVSKKOI3HLrTkI94ucx8+1kX6IZD9k=; h=Message-ID:Subject:From:To:Date:In-Reply-To:References: Content-Type:MIME-Version; b=eUTvVeJ/xulcMsRXbnwMTmWIaI8S3z3o6spKJRHWhZIFppeuuotw/hOH6sASbZarKt5OlNd/5Wxp6xVuxtqJDfpiGHVTn2+6Rx9pkT1jMgp8Sjg6GKe2ARWRhvWJpYD9Y/VGCFu2CGInU/8aNd7OmJYiQ7wu6Z8Phpe9SLbiG3M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=OoDixn5t; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id D71EFC2BD10; Sun, 26 May 2024 11:27:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1716722880; bh=GmMSVJ7/NdnOxfVSKKOI3HLrTkI94ucx8+1kX6IZD9k=; h=Subject:From:To:Date:In-Reply-To:References:From; b=OoDixn5t7X3fk3Ov5ceb6JLx+B6TS2Irb9vqNJGR3Sg/9YZNmEcMLhr27pBlI4dHZ EEldnJrYbFxlrWUcQ1DRdJA12+Bn04gEVAwmHhHALJGENDpIxXKJhSGig9Xo4OTv+x tzgkm5thzkodgDjFpSnCY624U6AXWzRc8zgT3dl+QPHBMAqr3mFKxqRw/VKYY3SFMj VsAEAxvEZVFR2GfkqAke5RK7rm3oI5ahrH/2U2SGy3jfcqoUXkkLx2toFT54PHIB5r /b3DNWeWQBXWFEMZ9uZ9GMhv3ERZSr1PtCLckJ/7JZPK2vQWOd9iGVdTbwSIixy5Iw oAtLtnjfvsRdQ== Message-ID: Subject: Re: RFC2224 support in Linux /sbin/mount.nfs4? From: Jeff Layton To: Dan Shelton , Linux NFS Mailing List Date: Sun, 26 May 2024 07:27:58 -0400 In-Reply-To: References: <619bbf23-dbfe-4c26-adb9-1cc89f3f22a2@redhat.com> Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; keydata=mQINBE6V0TwBEADXhJg7s8wFDwBMEvn0qyhAnzFLTOCHooMZyx7XO7dAiIhDSi7G1NPxw n8jdFUQMCR/GlpozMFlSFiZXiObE7sef9rTtM68ukUyZM4pJ9l0KjQNgDJ6Fr342Htkjxu/kFV1Wv egyjnSsFt7EGoDjdKqr1TS9syJYFjagYtvWk/UfHlW09X+jOh4vYtfX7iYSx/NfqV3W1D7EDi0PqV T2h6v8i8YqsATFPwO4nuiTmL6I40ZofxVd+9wdRI4Db8yUNA4ZSP2nqLcLtFjClYRBoJvRWvsv4lm 0OX6MYPtv76hka8lW4mnRmZqqx3UtfHX/hF/zH24Gj7A6sYKYLCU3YrI2Ogiu7/ksKcl7goQjpvtV YrOOI5VGLHge0awt7bhMCTM9KAfPc+xL/ZxAMVWd3NCk5SamL2cE99UWgtvNOIYU8m6EjTLhsj8sn VluJH0/RcxEeFbnSaswVChNSGa7mXJrTR22lRL6ZPjdMgS2Km90haWPRc8Wolcz07Y2se0xpGVLEQ cDEsvv5IMmeMe1/qLZ6NaVkNuL3WOXvxaVT9USW1+/SGipO2IpKJjeDZfehlB/kpfF24+RrK+seQf CBYyUE8QJpvTZyfUHNYldXlrjO6n5MdOempLqWpfOmcGkwnyNRBR46g/jf8KnPRwXs509yAqDB6sE 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AaM1LRC28muq91WCFhs/nzHozpbzcheyGtMUI2Ao4K6mnY+3zIuXPygZMFr9KXE6fF7HzKxKuZMJO aEZCiDOq0anx6FmOzs5E6Jqdpo/mtI8beK+BE7Va6ni7YrQlnT0i3vaTVMTiCThbqsB20VrbMjlhp f8lfK1XVNbRq/R7GZ9zHESlsa35ha60yd/j3pu5hT2xyy8krV8vGhHvnJ1XRMJBAB/UYb6FyC7S+m QZIQXVeAA+smfTT0tDrisj1U5x6ZB9b3nBg65kc= Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.52.1 (3.52.1-1.fc40app1) Precedence: bulk X-Mailing-List: linux-nfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Fri, 2024-05-24 at 19:11 +0200, Dan Shelton wrote: > On Wed, 15 May 2024 at 23:46, Steve Dickson wrote: > >=20 > > Hey! > >=20 > > On 5/14/24 5:57 PM, Dan Shelton wrote: > > > Hello! > > >=20 > > > Solaris, Windows and libnfs NFSv4 clients support RFC2224 URLs, which > > > provide platform-independent paths where resources can be mounted > > > from, i.e. nfs://myhost//dir1/dir2 > > >=20 > > > Could Linux /sbin/mount.nfs4 support this too, please? > > Why? What does it bring to the table that the Linux client > > does already do via v4... with the except, of course, public > > filehandles, which is something I'm pretty sure the Linux > > client will not support. >=20 > This is NOT for Linux only. Every OS has its own system to describe > shares, and not all are compatible. URLs are portable. >=20 > >=20 > > So again why? WebNFS died with Sun... Plus RFC2224 talks > > about v2 and v3... How does it fit in a V4 world. >=20 > This is NOT about WebNFS or SUN, this is to make the job of admins easier= . >=20 I think Steve is just trying to get at the use-case for this. Who is using nfs:// URLs in their environment, and why?=C2=A0IOW, how will adding this make things better? Then there are the more practical questions: - will this require kernel support? If I mount using a nfs:// URL, should I expect to see that in /proc/self/mounts, instead of a host:/export ? - do you need support for public filehandles? Those were largely ignored by most NFS implementors, including Linux. That opens an entirely separate can of worms. I'm happy to consider patches that add support for this (including documentation), but I'd need to understand why this is a material improvement over the traditional ":/" syntax. --=20 Jeff Layton