From owner-svn-src-head@freebsd.org Sun May 13 23:38:02 2018 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 84AF2FDA41F; Sun, 13 May 2018 23:38:02 +0000 (UTC) (envelope-from rmacklem@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 38F3C6A53A; Sun, 13 May 2018 23:38:02 +0000 (UTC) (envelope-from rmacklem@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 1A43E14409; Sun, 13 May 2018 23:38:02 +0000 (UTC) (envelope-from rmacklem@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id w4DNc1VD002758; Sun, 13 May 2018 23:38:01 GMT (envelope-from rmacklem@FreeBSD.org) Received: (from rmacklem@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id w4DNc1Cu002757; Sun, 13 May 2018 23:38:01 GMT (envelope-from rmacklem@FreeBSD.org) Message-Id: <201805132338.w4DNc1Cu002757@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: rmacklem set sender to rmacklem@FreeBSD.org using -f From: Rick Macklem Date: Sun, 13 May 2018 23:38:01 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r333592 - head/sys/fs/nfsserver X-SVN-Group: head X-SVN-Commit-Author: rmacklem X-SVN-Commit-Paths: head/sys/fs/nfsserver X-SVN-Commit-Revision: 333592 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 13 May 2018 23:38:02 -0000 Author: rmacklem Date: Sun May 13 23:38:01 2018 New Revision: 333592 URL: https://svnweb.freebsd.org/changeset/base/333592 Log: Fix the eir_server_scope reply argument for NFSv4.1 ExchangeID. In the reply to an ExchangeID operation, the NFSv4.1 server returns a "scope" value (eir_server_scope). If this value is the same, it indicates that two servers share state, which is never the case for FreeBSD servers. As such, the value needs to be unique and it was without this patch. However, I just found out that it is not supposed to change when the server reboots and without this patch, it did change. This patch fixes eir_server_scope so that it does not change when the server is rebooted. The only affect not having this patch has is that Linux clients don't reclaim opens and locks after a server reboot, which meant they lost any byte range locks held before the server rebooted. It only affects NFSv4.1 mounts and the FreeBSD NFSv4.1 client was not affected by this bug. MFC after: 1 week Modified: head/sys/fs/nfsserver/nfs_nfsdserv.c Modified: head/sys/fs/nfsserver/nfs_nfsdserv.c ============================================================================== --- head/sys/fs/nfsserver/nfs_nfsdserv.c Sun May 13 23:24:48 2018 (r333591) +++ head/sys/fs/nfsserver/nfs_nfsdserv.c Sun May 13 23:38:01 2018 (r333592) @@ -3835,9 +3835,9 @@ nfsrvd_exchangeid(struct nfsrv_descript *nd, __unused txdr_hyper(owner_minor, tl); /* Minor */ (void)nfsm_strtom(nd, nd->nd_cred->cr_prison->pr_hostuuid, strlen(nd->nd_cred->cr_prison->pr_hostuuid)); /* Major */ - NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED); - *tl++ = txdr_unsigned(NFSX_UNSIGNED); - *tl++ = time_uptime; /* Make scope a unique value. */ + (void)nfsm_strtom(nd, nd->nd_cred->cr_prison->pr_hostuuid, + strlen(nd->nd_cred->cr_prison->pr_hostuuid)); /* Scope */ + NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); *tl = txdr_unsigned(1); (void)nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org")); (void)nfsm_strtom(nd, version, strlen(version));