From nobody Fri Nov 5 00:09:53 2021 X-Original-To: dev-commits-src-all@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id EE19B1847B01; Fri, 5 Nov 2021 00:09:53 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Hlgqj5rgdz4xLF; Fri, 5 Nov 2021 00:09:53 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 7F01059ED; Fri, 5 Nov 2021 00:09:53 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 1A509rEo044738; Fri, 5 Nov 2021 00:09:53 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 1A509rSV044737; Fri, 5 Nov 2021 00:09:53 GMT (envelope-from git) Date: Fri, 5 Nov 2021 00:09:53 GMT Message-Id: <202111050009.1A509rSV044737@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Rick Macklem Subject: git: 80e5955b085a - main - nfscl: Fix NFSv4.1/4.2 pnfs mounts using nconnect List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-all@freebsd.org X-BeenThere: dev-commits-src-all@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: rmacklem X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 80e5955b085af20e65ef84066a164936413748e3 Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch main has been updated by rmacklem: URL: https://cgit.FreeBSD.org/src/commit/?id=80e5955b085af20e65ef84066a164936413748e3 commit 80e5955b085af20e65ef84066a164936413748e3 Author: Rick Macklem AuthorDate: 2021-11-05 00:06:34 +0000 Commit: Rick Macklem CommitDate: 2021-11-05 00:06:34 +0000 nfscl: Fix NFSv4.1/4.2 pnfs mounts using nconnect When a mount with the "pnfs" and "nconnect" options specified does an I/O operation, it erroneously uses a TCP connection to the MDS when it is meant to be a DS operation and, as such, needs to use a TCP connection to the DS. This patch fixes this. When the "pnfs" and "nconnect" options are specified for a NFSv4.1/4.2 mount, there probably should be N connections established to each DS for I/O RPCs. This is a fair amount of work and may be done in a future commit. This problem was found during a recent IETF NFSv4 working group testing event. MFC after: 2 weeks --- sys/fs/nfs/nfs_commonkrpc.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/sys/fs/nfs/nfs_commonkrpc.c b/sys/fs/nfs/nfs_commonkrpc.c index 358d77fe5b30..c1a5fab2a358 100644 --- a/sys/fs/nfs/nfs_commonkrpc.c +++ b/sys/fs/nfs/nfs_commonkrpc.c @@ -639,8 +639,17 @@ newnfs_request(struct nfsrv_descript *nd, struct nfsmount *nmp, if (nrp->nr_client == NULL) newnfs_connect(nmp, nrp, cred, td, 0, false, &nrp->nr_client); + /* + * If the "nconnect" mount option was specified and this RPC is + * one that can have a large RPC message and is being done through + * the NFS/MDS server, use an additional connection. (When the RPC is + * being done through the server/MDS, nrp == &nmp->nm_sockreq.) + * The "nconnect" mount option normally has minimal effect when the + * "pnfs" mount option is specified, since only Readdir RPCs are + * normally done through the NFS/MDS server. + */ nextconn_set = false; - if (nmp != NULL && nmp->nm_aconnect > 0 && + if (nmp != NULL && nmp->nm_aconnect > 0 && nrp == &nmp->nm_sockreq && (nd->nd_procnum == NFSPROC_READ || nd->nd_procnum == NFSPROC_READDIR || nd->nd_procnum == NFSPROC_READDIRPLUS ||