From owner-svn-src-all@freebsd.org Tue Feb 20 00:34:43 2018 Return-Path: Delivered-To: svn-src-all@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 8B0DAF0E7F3; Tue, 20 Feb 2018 00:34:43 +0000 (UTC) (envelope-from markj@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 2DCE27588E; Tue, 20 Feb 2018 00:34:43 +0000 (UTC) (envelope-from markj@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 23C8921D69; Tue, 20 Feb 2018 00:34:43 +0000 (UTC) (envelope-from markj@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id w1K0YgqD048666; Tue, 20 Feb 2018 00:34:42 GMT (envelope-from markj@FreeBSD.org) Received: (from markj@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id w1K0Yg3s048665; Tue, 20 Feb 2018 00:34:42 GMT (envelope-from markj@FreeBSD.org) Message-Id: <201802200034.w1K0Yg3s048665@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: markj set sender to markj@FreeBSD.org using -f From: Mark Johnston Date: Tue, 20 Feb 2018 00:34:42 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r329613 - stable/11/sys/geom/mirror X-SVN-Group: stable-11 X-SVN-Commit-Author: markj X-SVN-Commit-Paths: stable/11/sys/geom/mirror X-SVN-Commit-Revision: 329613 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Feb 2018 00:34:43 -0000 Author: markj Date: Tue Feb 20 00:34:42 2018 New Revision: 329613 URL: https://svnweb.freebsd.org/changeset/base/329613 Log: MFC r328938: Simplify synchronization read error handling. Modified: stable/11/sys/geom/mirror/g_mirror.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/geom/mirror/g_mirror.c ============================================================================== --- stable/11/sys/geom/mirror/g_mirror.c Tue Feb 20 00:06:07 2018 (r329612) +++ stable/11/sys/geom/mirror/g_mirror.c Tue Feb 20 00:34:42 2018 (r329613) @@ -1334,9 +1334,7 @@ g_mirror_sync_request(struct g_mirror_softc *sc, struc */ switch (bp->bio_cmd) { case BIO_READ: { - struct g_mirror_disk *d; struct g_consumer *cp; - int readable; KFAIL_POINT_ERROR(DEBUG_FP, g_mirror_sync_request_read, bp->bio_error); @@ -1347,31 +1345,17 @@ g_mirror_sync_request(struct g_mirror_softc *sc, struc bp->bio_error); /* - * If there's at least one other disk from which we can - * read the block, retry the request. - */ - readable = 0; - LIST_FOREACH(d, &sc->sc_disks, d_next) - if (d->d_state == G_MIRROR_DISK_STATE_ACTIVE && - !(d->d_flags & G_MIRROR_DISK_FLAG_BROKEN)) - readable++; - - /* * The read error will trigger a syncid bump, so there's * no need to do that here. * - * If we can retry the read from another disk, do so. - * Otherwise, all we can do is kick out the new disk. + * The read error handling for regular requests will + * retry the read from all active mirrors before passing + * the error back up, so there's no need to retry here. */ - if (readable == 0) { - g_mirror_sync_request_free(disk, bp); - g_mirror_event_send(disk, - G_MIRROR_DISK_STATE_DISCONNECTED, - G_MIRROR_EVENT_DONTWAIT); - } else { - g_mirror_sync_reinit(disk, bp, bp->bio_offset); - goto retry_read; - } + g_mirror_sync_request_free(disk, bp); + g_mirror_event_send(disk, + G_MIRROR_DISK_STATE_DISCONNECTED, + G_MIRROR_EVENT_DONTWAIT); return; } G_MIRROR_LOGREQ(3, bp, @@ -1427,7 +1411,6 @@ g_mirror_sync_request(struct g_mirror_softc *sc, struc g_mirror_sync_reinit(disk, bp, sync->ds_offset); sync->ds_offset += bp->bio_length; -retry_read: G_MIRROR_LOGREQ(3, bp, "Sending synchronization request."); sync->ds_consumer->index++;