From owner-svn-src-projects@freebsd.org Thu Jul 5 20:12:35 2018 Return-Path: Delivered-To: svn-src-projects@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 0A78F102C182 for ; Thu, 5 Jul 2018 20:12:35 +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 AFA77746E6; Thu, 5 Jul 2018 20:12:34 +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 90EEB1EBE1; Thu, 5 Jul 2018 20:12:34 +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 w65KCYEb057060; Thu, 5 Jul 2018 20:12:34 GMT (envelope-from rmacklem@FreeBSD.org) Received: (from rmacklem@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id w65KCYfD057059; Thu, 5 Jul 2018 20:12:34 GMT (envelope-from rmacklem@FreeBSD.org) Message-Id: <201807052012.w65KCYfD057059@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: rmacklem set sender to rmacklem@FreeBSD.org using -f From: Rick Macklem Date: Thu, 5 Jul 2018 20:12:34 +0000 (UTC) To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r336014 - projects/pnfs-planb-server/sys/fs/nfsserver X-SVN-Group: projects X-SVN-Commit-Author: rmacklem X-SVN-Commit-Paths: projects/pnfs-planb-server/sys/fs/nfsserver X-SVN-Commit-Revision: 336014 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-projects@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: "SVN commit messages for the src " projects" tree" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 05 Jul 2018 20:12:35 -0000 Author: rmacklem Date: Thu Jul 5 20:12:34 2018 New Revision: 336014 URL: https://svnweb.freebsd.org/changeset/base/336014 Log: Change the pNFS server so that it does not disable a mirrored DS when a client does a LayoutReturn with an error report of NFSERR_STALE from a DS. The current FreeBSD client can generate these errors for an operational DS while doing a recovery of a mirror after a mirrored DS has been repaired. I am not sure why these errors occur, but my best current guess is a race between the Layout Recall issued by the kernel code run from pnfsdscopymr(8) and a Read operation on the DS for the file bing copied. The errrors are not fatal, since the client falls back on doing I/O through the MDS, which can do the I/O successfully as a proxy. (The fact that the MDS can do this indicates that the file does still exist on the functioning DS.) Modified: projects/pnfs-planb-server/sys/fs/nfsserver/nfs_nfsdstate.c Modified: projects/pnfs-planb-server/sys/fs/nfsserver/nfs_nfsdstate.c ============================================================================== --- projects/pnfs-planb-server/sys/fs/nfsserver/nfs_nfsdstate.c Thu Jul 5 18:55:42 2018 (r336013) +++ projects/pnfs-planb-server/sys/fs/nfsserver/nfs_nfsdstate.c Thu Jul 5 20:12:34 2018 (r336014) @@ -6750,9 +6750,10 @@ nfsrv_flexlayouterr(struct nfsrv_descript *nd, uint32_ NFSD_DEBUG(4, "flexlayouterr op=%d stat=%d\n", opnum, stat); /* - * Except for NFSERR_ACCES errors, disable the mirror. + * Except for NFSERR_ACCES and NFSERR_STALE errors, + * disable the mirror. */ - if (stat != NFSERR_ACCES) + if (stat != NFSERR_ACCES && stat != NFSERR_STALE) nfsrv_delds(devid, p); } }