From owner-svn-src-all@FreeBSD.ORG Tue Jan 29 17:20:50 2013 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 9CDBE62C; Tue, 29 Jan 2013 17:20:50 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) by mx1.freebsd.org (Postfix) with ESMTP id 8A411A29; Tue, 29 Jan 2013 17:20:50 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.5/8.14.5) with ESMTP id r0THKo7e084278; Tue, 29 Jan 2013 17:20:50 GMT (envelope-from mav@svn.freebsd.org) Received: (from mav@localhost) by svn.freebsd.org (8.14.5/8.14.5/Submit) id r0THKoWJ084277; Tue, 29 Jan 2013 17:20:50 GMT (envelope-from mav@svn.freebsd.org) Message-Id: <201301291720.r0THKoWJ084277@svn.freebsd.org> From: Alexander Motin Date: Tue, 29 Jan 2013 17:20:50 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r246076 - stable/9/sys/geom/mirror X-SVN-Group: stable-9 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: 2.1.14 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, 29 Jan 2013 17:20:50 -0000 Author: mav Date: Tue Jan 29 17:20:49 2013 New Revision: 246076 URL: http://svnweb.freebsd.org/changeset/base/246076 Log: MFC r245443: Alike to r242314 for GRAID make GMIRROR more aggressive in marking volumes as clean on shutdown and move that action from shutdown_pre_sync stage to shutdown_post_sync to avoid extra flapping. ZFS tends to not close devices on shutdown, that doesn't allow GEOM MIRROR to shutdown gracefully. To handle that, mark volume as clean just when shutdown time comes and there are no active writes. PR: kern/113957 Modified: stable/9/sys/geom/mirror/g_mirror.c Directory Properties: stable/9/sys/ (props changed) Modified: stable/9/sys/geom/mirror/g_mirror.c ============================================================================== --- stable/9/sys/geom/mirror/g_mirror.c Tue Jan 29 17:05:21 2013 (r246075) +++ stable/9/sys/geom/mirror/g_mirror.c Tue Jan 29 17:20:49 2013 (r246076) @@ -80,7 +80,8 @@ SYSCTL_UINT(_kern_geom_mirror, OID_AUTO, G_MIRROR_DEBUG(4, "%s: Woken up %p.", __func__, (ident)); \ } while (0) -static eventhandler_tag g_mirror_pre_sync = NULL; +static eventhandler_tag g_mirror_post_sync = NULL; +static int g_mirror_shutdown = 0; static int g_mirror_destroy_geom(struct gctl_req *req, struct g_class *mp, struct g_geom *gp); @@ -814,7 +815,7 @@ g_mirror_idle(struct g_mirror_softc *sc, return (0); if (acw > 0 || (acw == -1 && sc->sc_provider->acw > 0)) { timeout = g_mirror_idletime - (time_uptime - sc->sc_last_write); - if (timeout > 0) + if (!g_mirror_shutdown && timeout > 0) return (timeout); } sc->sc_idle = 1; @@ -2820,7 +2821,7 @@ g_mirror_access(struct g_provider *pp, i error = ENXIO; goto end; } - if (dcw == 0 && !sc->sc_idle) + if (dcw == 0) g_mirror_idle(sc, dcw); if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_DESTROYING) != 0) { if (acr > 0 || acw > 0 || ace > 0) { @@ -3231,7 +3232,7 @@ g_mirror_dumpconf(struct sbuf *sb, const } static void -g_mirror_shutdown_pre_sync(void *arg, int howto) +g_mirror_shutdown_post_sync(void *arg, int howto) { struct g_class *mp; struct g_geom *gp, *gp2; @@ -3241,6 +3242,7 @@ g_mirror_shutdown_pre_sync(void *arg, in mp = arg; DROP_GIANT(); g_topology_lock(); + g_mirror_shutdown = 1; LIST_FOREACH_SAFE(gp, &mp->geom, geom, gp2) { if ((sc = gp->softc) == NULL) continue; @@ -3249,6 +3251,7 @@ g_mirror_shutdown_pre_sync(void *arg, in continue; g_topology_unlock(); sx_xlock(&sc->sc_lock); + g_mirror_idle(sc, -1); g_cancel_event(sc); error = g_mirror_destroy(sc, G_MIRROR_DESTROY_DELAYED); if (error != 0) @@ -3263,9 +3266,9 @@ static void g_mirror_init(struct g_class *mp) { - g_mirror_pre_sync = EVENTHANDLER_REGISTER(shutdown_pre_sync, - g_mirror_shutdown_pre_sync, mp, SHUTDOWN_PRI_FIRST); - if (g_mirror_pre_sync == NULL) + g_mirror_post_sync = EVENTHANDLER_REGISTER(shutdown_post_sync, + g_mirror_shutdown_post_sync, mp, SHUTDOWN_PRI_FIRST); + if (g_mirror_post_sync == NULL) G_MIRROR_DEBUG(0, "Warning! Cannot register shutdown event."); } @@ -3273,8 +3276,8 @@ static void g_mirror_fini(struct g_class *mp) { - if (g_mirror_pre_sync != NULL) - EVENTHANDLER_DEREGISTER(shutdown_pre_sync, g_mirror_pre_sync); + if (g_mirror_post_sync != NULL) + EVENTHANDLER_DEREGISTER(shutdown_post_sync, g_mirror_post_sync); } DECLARE_GEOM_CLASS(g_mirror_class, g_mirror);