From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 4755146C833; Thu, 10 Sep 2026 11:30:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789039850; cv=none; b=awMclc1/QTeRLCjNd+VedFPnBcRTqEJ2mxmT4hjkLPi6B2nHoyqcK73L71/C5Z9JkyjVBubGhY5ZlmUQCqHGeInTRmcQkN7oPeRGhF/0N4mA89I+xdiDNnNPRxYGkHMJU7lLpHX+h1I0Z4JTpxGNHQUr3nEv8GBhXXyUmNbZTsM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789039850; c=relaxed/simple; bh=wZsXUCu/EetlovHHpa/qhlsFS1Q44L3OnAaH4WLXKRQ=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=VqOB0SMLWc8ay3YJr2Ejh2v7qVAfToDTdAKmm86G1jhuZ8b5j8APfmMKE75+xD7Ev6X+EFzbVff9dBZNS8NpbLD+L6J4Ua3pJRKXis1nWCinVHCaUimTZHV3sEd/ZvYH2QDoZ0EjqvqzZma/pJECKrcFbbLQ8441a1mS/8RiEtw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=l8oR1rb/; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="l8oR1rb/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 293211F000FF; Thu, 10 Sep 2026 11:30:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789039848; bh=8S1ywZpukOB83w+Hx6kuzFwom9V4ld1Bpj+uScYisjo=; h=Subject:From:To:Cc:Date:In-Reply-To:References; b=l8oR1rb/6KtwBDN6sD27qC1xtbLiOKDMKiQ8r4PRhcyLnidCuzmzmiVaRxEcLVo7q 9OZ11cjFhm6oJoDXAoIwgYnf1a56qPCn1TPGfaATfmXAU/bdnr60mYueEaxIwT9BXb T7oajEWnFoq4b5UeF5fjWRJqkwNrWNTyofwXrQPCLD9HxX15R/DCbVKLx85TrfHTNS Wcl+kwlCOFVCdCl/c/0kag/s6iezmdNJIuEZR7HzHivFQ931eqCIxfpFhw9T/mBxLA 8dXP6932jyv85dpfMWdQ+xQmA8CFazk3M01iJjspouhP/S66SEPzHOIMtNKaSs9VqS k74y32vy+fyZA== Message-ID: <208df4dabcb9db9c6c7d00f4cf2f63fa3be815e1.camel@kernel.org> Subject: Re: [RFC PATCH 1/2] common/nfs: add management helpers From: Jeff Layton To: Christoph Hellwig , "Darrick J. Wong" Cc: cem@kernel.org, zlang@kernel.org, linux-xfs@vger.kernel.org, fstests@vger.kernel.org, jack@suse.cz, Chuck Lever , linux-nfs@vger.kernel.org Date: Thu, 10 Sep 2026 07:30:46 -0400 In-Reply-To: References: <20260907164054.111393-1-cem@kernel.org> <20260907164054.111393-2-cem@kernel.org> <20260908142226.GL839663@frogsfrogsfrogs> 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 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CHqumUHRry+RF0lH00clzX/W8OrQJZtoBPXv9ahka/Vp7kEulcBJr1cH5Wz/WprhsIM7U9pse1f1g Yy9YbXtWctUz8uvDR7shsQxAhX3qO7DilMtuGo1v97I/Kx4gXQ52syh/w6EBny71CZrOgD6kJwPVV 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 3.60.2 (3.60.2-1.fc44) Precedence: bulk X-Mailing-List: linux-nfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Tue, 2026-09-08 at 23:12 -0700, Christoph Hellwig wrote: > On Tue, Sep 08, 2026 at 07:22:26AM -0700, Darrick J. Wong wrote: > > > +# Start rpcbind if it is not already running. > > > +_start_rpcbind() > > > +{ > > > + rpcinfo -p localhost > /dev/null 2>&1 && return 0 > > > + rpcbind 2>> $seqres.full || _notrun "Cannot start rpcbind" > > > + /usr/sbin/rpc.statd 2>> $seqres.full || _notrun "Cannot start rpc.s= tatd" > > > + /usr/sbin/rpc.idmapd 2>> $seqres.full || _notrun "Cannot start rpc.= idmapd" > > > + /usr/sbin/nfsdcld 2>> $seqres.full || _notrun "Cannot start nfsdcld= " > >=20 > > Aren't these daemons usually configured as system services? > >=20 > > # service rpcbind start > >=20 > > etc? >=20 > They usually are, but doing that as part of a test feels wrong. > Adding the relevant maintainers and list. >=20 >=20 I don't see a problem with using the normal systemd services as long as you're just doing a "start" instead of an "enable". That would be a lot less likely to bitrot than these scripts. > > > +} > > > + > > > +# Stop rpcbind. > > > +_stop_rpcbind() > > > +{ > > > + pkill rpcbind 2>/dev/null > > > +} > > > + > > > +# Start the NFS server if not already running. > > > +_start_nfsd() > > > +{ > > > + rpcinfo -p localhost 2>/dev/null | grep -q nfs && return 0 > > > + rpc.nfsd 2>> $seqres.full || _notrun "Cannot start rpc.nfsd" > > > + rpc.mountd 2>> $seqres.full || _notrun "Cannot start rpc.mountd" > > > +} > > > + > > > +# Stop the NFS server. > > > +_stop_nfsd() > > > +{ > > > + rpc.nfsd 0 2>/dev/null > > > + pkill rpc.mountd 2>/dev/null > >=20 > > If the system under test has nfs filesystems mounted, won't killing > > those daemons also break the mounts? > >=20 > > I think that might break testing of nfs itself, and nfs-booted testing > > nodes as well? >=20 > Possibly. I guess if we want to save we need to launch a container > or at least a network namespace this is bound too.=20 Doing this in a container would be better and less likely to interfere with other stuff running on the box. Our container isolation is still not 100% perfect with nfsd (there is still a global mutex, etc.), but we're getting closer. --=20 Jeff Layton