From mboxrd@z Thu Jan 1 00:00:00 1970 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 BEAF01B6D11 for ; Sat, 24 May 2025 10:26:38 +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=1748082398; cv=none; b=K5Wa75TnAAhkexh2d/BUZUAfNHcERhk3J2yRPNmpn1ydSQa9TC5c3NJ90fS3HQ/nJ5QeN2re1GBbUct90vEI5LWIXqEHryi4JIC6t4+U/oWJq/w3sbzGBNoopoax+5rZQYHIGgto9e7aUQMk9h1vwvbnQTDfeKnZ+MkjZH3J9E4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748082398; c=relaxed/simple; bh=fkQwi35lQFWHxJzG85tzXtm1UJC7u/VTEZ7BUfLJWqU=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=sxCpno3MZ4Fhly+fbyko1B4L1LPkxwMqxD53Dj5FxHqIPAEU41KsLDodIotZ7kIkv/d7PA46Fu4e4xreYrYUXstBOF1UxDPkjGDZ8/Fo9ATE6wFSKUNJUlHpDgsgorrdCKMnwk16hfIWCZchrdfIV1q78DApAT2pmuX7L6Uod48= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=QyE9T09p; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="QyE9T09p" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 426CDC4CEE4; Sat, 24 May 2025 10:26:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1748082398; bh=fkQwi35lQFWHxJzG85tzXtm1UJC7u/VTEZ7BUfLJWqU=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=QyE9T09pFy4mdbkVM0HTyZ2lRTgHFGRQaF4RwrxSZRdAc21GP6eml7d8SdgbWKUo1 Mjcu1CL1NxEe3/tnKxJIpDtkn0wf2wbW1N2LKNI7a6UhQC9rAUf5wQUe47BURXo9g/ CBTik9Sn6bZOcr4bnC1xGN4zmZo8OOvSR1Z8ma8tIOm7VRCfwvMJmTaLTjn60smYXy aXGVMxy+waih3RiEPvnYfPbkGbP+jlakRSUBdjfW/KMLINkhJtb6tKlMbib0tI2UVZ 55UHrkf4rbONdgv+QYviK3gZByNceHY1ZMgAue4pxOXm6k1tx3pK3nx/DTlnLtbhYr 2ZvNrYVd8Ekiw== Message-ID: Subject: Re: unable to run NFSD in container if "options sunrpc pool_mode=pernode" From: Jeff Layton To: Mike Snitzer , steved@redhat.com Cc: Chuck Lever , NeilBrown , linux-nfs@vger.kernel.org Date: Sat, 24 May 2025 06:26:37 -0400 In-Reply-To: References: <6bb9e9cce27e2a222bf55e272d690aab8f0eef13.camel@kernel.org> Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; keydata=mQINBE6V0TwBEADXhJg7s8wFDwBMEvn0qyhAnzFLTOCHooMZyx7XO7dAiIhDSi7G1NPxw n8jdFUQMCR/GlpozMFlSFiZXiObE7sef9rTtM68ukUyZM4pJ9l0KjQNgDJ6Fr342Htkjxu/kFV1Wv egyjnSsFt7EGoDjdKqr1TS9syJYFjagYtvWk/UfHlW09X+jOh4vYtfX7iYSx/NfqV3W1D7EDi0PqV T2h6v8i8YqsATFPwO4nuiTmL6I40ZofxVd+9wdRI4Db8yUNA4ZSP2nqLcLtFjClYRBoJvRWvsv4lm 0OX6MYPtv76hka8lW4mnRmZqqx3UtfHX/hF/zH24Gj7A6sYKYLCU3YrI2Ogiu7/ksKcl7goQjpvtV 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-0400, Jeff Layton wrote: > > > On Fri, 2025-05-23 at 18:19 -0400, Mike Snitzer wrote: > > > > On Fri, May 23, 2025 at 02:40:17PM -0400, Jeff Layton wrote: > > > > > On Fri, 2025-05-23 at 14:29 -0400, Mike Snitzer wrote: > > > > > > I don't know if $SUBJECT ever worked... but with latest 6.15 or > > > > > > nfsd-testing if I just use pool_mode=3Dglobal then all is fine. > > > > > >=20 > > > > > > If pool_mode=3Dpernode then mounting the container's NFSv3 expo= rt fails. > > > > > >=20 > > > > > > I haven't started to dig into code yet but pool_mode=3Dpernode = works > > > > > > perfectly fine if NFSD isn't running in a container. > > > > > >=20 > > >=20 > > > Oops, I went and looked and nfsd isn't running in a container on thes= e > > > boxes. There are some other containerized apps running on the box, bu= t > > > nfsd isn't running in a container. > >=20 > > OK. > >=20 > > > > I'm using nfs-utils-2.8.2. I don't see any nfsd threads running if= I > > > > use "options sunrpc pool_mode=3Dpernode". > > > >=20 > > >=20 > > > I'll have a look soon, but if you figure it out in the meantime, let = us > > > know. > >=20 > > Will do. > >=20 > > Just the latest info I have, with sunrpc's pool_mode=3Dpernode dd hangs > > with this stack trace: >=20 > Turns out this pool_mode=3Dpernode issue is a regression caused by the > very recent nfs-utils 2.8.2 (I rebuilt EL10's nfs-utils package, > because why not upgrade to the latest!?). >=20 > If I use EL9.5's latest nfs-utils-2.5.4-37.el8.x86_64 then sunrpc's > pool_mode=3Dpernode works fine. >=20 > And this issue doesn't have anything to do with running in a container > (it seemed to be container related purely because I happened to be > seeing the issue with an EL9.5 container that had the EL10-based > nfs-utils 2.8.2 installed). >=20 > Steved, unfortunately I'm not sure what the problem is with the newer > nfs-utils and setting "options sunrpc pool_mode=3Dpernode" >=20 This is probably a kernel problem. Newer nfs-utils uses nfsdctl to start the server, whereas the older nfs-utils would use rpc.nfsd. nfsdctl uses the netlink interfaces to start the server instead of /proc/fs/nfsd which rpc.nfsd uses. If you're getting different results with the two different nfs-utils versions then the problem is likely there. I'll take a look. --=20 Jeff Layton