Date: Thu, 29 Sep 2011 18:42:44 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-7@freebsd.org Subject: svn commit: r225881 - in stable/7: sbin/geom/class/mirror sys/geom/mirror Message-ID: <201109291842.p8TIgihh034832@svn.freebsd.org>
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Author: mav Date: Thu Sep 29 18:42:44 2011 New Revision: 225881 URL: http://svn.freebsd.org/changeset/base/225881 Log: MFC r196879: Add support for changing providers priority. PR: kern/160811 Modified: stable/7/sbin/geom/class/mirror/geom_mirror.c stable/7/sbin/geom/class/mirror/gmirror.8 stable/7/sys/geom/mirror/g_mirror_ctl.c Directory Properties: stable/7/sbin/geom/ (props changed) stable/7/sbin/geom/class/journal/ (props changed) stable/7/sbin/geom/class/label/ (props changed) stable/7/sbin/geom/class/part/ (props changed) stable/7/sbin/geom/class/stripe/ (props changed) stable/7/sbin/geom/misc/ (props changed) stable/7/sys/ (props changed) stable/7/sys/cddl/contrib/opensolaris/ (props changed) stable/7/sys/contrib/dev/acpica/ (props changed) stable/7/sys/contrib/pf/ (props changed) Modified: stable/7/sbin/geom/class/mirror/geom_mirror.c ============================================================================== --- stable/7/sbin/geom/class/mirror/geom_mirror.c Thu Sep 29 18:12:40 2011 (r225880) +++ stable/7/sbin/geom/class/mirror/geom_mirror.c Thu Sep 29 18:42:44 2011 (r225881) @@ -1,5 +1,5 @@ /*- - * Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org> + * Copyright (c) 2004-2009 Pawel Jakub Dawidek <pjd@FreeBSD.org> * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -41,13 +41,12 @@ __FBSDID("$FreeBSD$"); #include <core/geom.h> #include <misc/subr.h> - uint32_t lib_version = G_LIB_VERSION; uint32_t version = G_MIRROR_VERSION; static char label_balance[] = "load", configure_balance[] = "none"; static intmax_t label_slice = 4096, configure_slice = -1; -static intmax_t insert_priority = 0; +static intmax_t insert_priority = 0, configure_priority = -1; static void mirror_main(struct gctl_req *req, unsigned flags); static void mirror_activate(struct gctl_req *req); @@ -71,10 +70,12 @@ struct g_command class_commands[] = { { 'F', "nofailsync", NULL, G_TYPE_BOOL }, { 'h', "hardcode", NULL, G_TYPE_BOOL }, { 'n', "noautosync", NULL, G_TYPE_BOOL }, + { 'p', "priority", &configure_priority, G_TYPE_NUMBER }, { 's', "slice", &configure_slice, G_TYPE_NUMBER }, G_OPT_SENTINEL }, - NULL, "[-adfFhnv] [-b balance] [-s slice] name" + NULL, "[-adfFhnv] [-b balance] [-s slice] name\n" + "[-v] -p priority name prov" }, { "deactivate", G_FLAG_VERBOSE, NULL, G_NULL_OPTS, NULL, "[-v] name prov ..." Modified: stable/7/sbin/geom/class/mirror/gmirror.8 ============================================================================== --- stable/7/sbin/geom/class/mirror/gmirror.8 Thu Sep 29 18:12:40 2011 (r225880) +++ stable/7/sbin/geom/class/mirror/gmirror.8 Thu Sep 29 18:42:44 2011 (r225881) @@ -1,4 +1,4 @@ -.\" Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org> +.\" Copyright (c) 2004-2009 Pawel Jakub Dawidek <pjd@FreeBSD.org> .\" All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without @@ -24,7 +24,7 @@ .\" .\" $FreeBSD$ .\" -.Dd November 1, 2006 +.Dd August 1, 2009 .Dt GMIRROR 8 .Os .Sh NAME @@ -49,6 +49,12 @@ .Op Fl s Ar slice .Ar name .Nm +.Cm configure +.Op Fl v +.Fl p Ar priority +.Ar name +.Ar prov +.Nm .Cm rebuild .Op Fl v .Ar name @@ -115,8 +121,8 @@ indicates an action to be performed: .It Cm label Create a mirror. The order of components is important, because a component's priority is based on its position -(starting from 0). -The component with the biggest priority is used by the +(starting from 0 to 255). +The component with the biggest priority (the lowest number) is used by the .Cm prefer balance algorithm and is also used as a master component when resynchronization is needed, @@ -159,7 +165,7 @@ Clear metadata on the given providers. Configure the given device. .Pp Additional options include: -.Bl -tag -width ".Fl b Ar balance" +.Bl -tag -width ".Fl p Ar priority" .It Fl a Turn on autosynchronization of stale components. .It Fl b Ar balance @@ -175,6 +181,9 @@ Assumes device is in consistent state. Hardcode providers' names in metadata. .It Fl n Turn off autosynchronization of stale components. +.It Fl p Ar priority +Specifies priority for the given component +.Ar prov . .It Fl s Ar slice Specifies slice size for .Cm split Modified: stable/7/sys/geom/mirror/g_mirror_ctl.c ============================================================================== --- stable/7/sys/geom/mirror/g_mirror_ctl.c Thu Sep 29 18:12:40 2011 (r225880) +++ stable/7/sys/geom/mirror/g_mirror_ctl.c Thu Sep 29 18:42:44 2011 (r225881) @@ -1,5 +1,5 @@ /*- - * Copyright (c) 2004-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org> + * Copyright (c) 2004-2009 Pawel Jakub Dawidek <pjd@FreeBSD.org> * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -93,19 +93,19 @@ g_mirror_ctl_configure(struct gctl_req * { struct g_mirror_softc *sc; struct g_mirror_disk *disk; - const char *name, *balancep; - intmax_t *slicep; + const char *name, *balancep, *prov; + intmax_t *slicep, *priority; uint32_t slice; uint8_t balance; int *autosync, *noautosync, *failsync, *nofailsync, *hardcode, *dynamic; - int *nargs, do_sync = 0, dirty = 1; + int *nargs, do_sync = 0, dirty = 1, do_priority = 0; nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); if (nargs == NULL) { gctl_error(req, "No '%s' argument.", "nargs"); return; } - if (*nargs != 1) { + if (*nargs != 1 && *nargs != 2) { gctl_error(req, "Invalid number of arguments."); return; } @@ -149,6 +149,29 @@ g_mirror_ctl_configure(struct gctl_req * gctl_error(req, "No '%s' argument.", "dynamic"); return; } + priority = gctl_get_paraml(req, "priority", sizeof(*priority)); + if (priority == NULL) { + gctl_error(req, "No '%s' argument.", "priority"); + return; + } + if (*priority < -1 || *priority > 255) { + gctl_error(req, "Priority range is 0 to 255, %jd given", + *priority); + return; + } + /* + * Since we have a priority, we also need a provider now. + * Note: be WARNS safe, by always assigning prov and only throw an + * error if *priority != -1. + */ + prov = gctl_get_asciiparam(req, "arg1"); + if (*priority > -1) { + if (prov == NULL) { + gctl_error(req, "Priority needs a disk name"); + return; + } + do_priority = 1; + } if (*autosync && *noautosync) { gctl_error(req, "'%s' and '%s' specified.", "autosync", "noautosync"); @@ -189,19 +212,32 @@ g_mirror_ctl_configure(struct gctl_req * slice = sc->sc_slice; else slice = *slicep; - if (g_mirror_ndisks(sc, -1) < sc->sc_ndisks) { + /* Enforce usage() of -p not allowing any other options. */ + if (do_priority && (*autosync || *noautosync || *failsync || + *nofailsync || *hardcode || *dynamic || *slicep != -1 || + strcmp(balancep, "none") != 0)) { sx_xunlock(&sc->sc_lock); - gctl_error(req, "Not all disks connected. Try 'forget' command " - "first."); + gctl_error(req, "only -p accepted when setting priority"); return; } if (sc->sc_balance == balance && sc->sc_slice == slice && !*autosync && !*noautosync && !*failsync && !*nofailsync && !*hardcode && - !*dynamic) { + !*dynamic && !do_priority) { sx_xunlock(&sc->sc_lock); gctl_error(req, "Nothing has changed."); return; } + if ((!do_priority && *nargs != 1) || (do_priority && *nargs != 2)) { + sx_xunlock(&sc->sc_lock); + gctl_error(req, "Invalid number of arguments."); + return; + } + if (g_mirror_ndisks(sc, -1) < sc->sc_ndisks) { + sx_xunlock(&sc->sc_lock); + gctl_error(req, "Not all disks connected. Try 'forget' command " + "first."); + return; + } sc->sc_balance = balance; sc->sc_slice = slice; if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_NOAUTOSYNC) != 0) { @@ -223,6 +259,23 @@ g_mirror_ctl_configure(struct gctl_req * } } LIST_FOREACH(disk, &sc->sc_disks, d_next) { + /* + * Handle priority first, since we only need one disk, do one + * operation on it and then we're done. No need to check other + * flags, as usage doesn't allow it. + */ + if (do_priority) { + if (strcmp(disk->d_name, prov) == 0) { + if (disk->d_priority == *priority) + gctl_error(req, "Nothing has changed."); + else { + disk->d_priority = *priority; + g_mirror_update_metadata(disk); + } + break; + } + continue; + } if (do_sync) { if (disk->d_state == G_MIRROR_DISK_STATE_SYNCHRONIZING) disk->d_flags &= ~G_MIRROR_DISK_FLAG_FORCE_SYNC;
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