428 lines
12 KiB
C
428 lines
12 KiB
C
/*-
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* Copyright (c) 2004 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <errno.h>
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#include <paths.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <strings.h>
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#include <assert.h>
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#include <libgeom.h>
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#include <geom/mirror/g_mirror.h>
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#include <core/geom.h>
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#include <misc/subr.h>
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uint32_t lib_version = G_LIB_VERSION;
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uint32_t version = G_MIRROR_VERSION;
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static char label_balance[] = "split", configure_balance[] = "none";
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static intmax_t label_slice = 4096, configure_slice = -1;
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static intmax_t insert_priority = 0;
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static void mirror_main(struct gctl_req *req, unsigned flags);
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static void mirror_activate(struct gctl_req *req);
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static void mirror_clear(struct gctl_req *req);
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static void mirror_dump(struct gctl_req *req);
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static void mirror_label(struct gctl_req *req);
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struct g_command class_commands[] = {
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{ "activate", G_FLAG_VERBOSE, mirror_main, G_NULL_OPTS },
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{ "clear", G_FLAG_VERBOSE, mirror_main, G_NULL_OPTS },
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{ "configure", G_FLAG_VERBOSE, NULL,
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{
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{ 'a', "autosync", NULL, G_TYPE_NONE },
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{ 'b', "balance", configure_balance, G_TYPE_STRING },
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{ 'd', "dynamic", NULL, G_TYPE_NONE },
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{ 'h', "hardcode", NULL, G_TYPE_NONE },
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{ 'n', "noautosync", NULL, G_TYPE_NONE },
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{ 's', "slice", &configure_slice, G_TYPE_NUMBER },
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G_OPT_SENTINEL
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}
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},
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{ "deactivate", G_FLAG_VERBOSE, NULL, G_NULL_OPTS },
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{ "dump", 0, mirror_main, G_NULL_OPTS },
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{ "forget", G_FLAG_VERBOSE, NULL, G_NULL_OPTS },
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{ "label", G_FLAG_VERBOSE, mirror_main,
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{
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{ 'b', "balance", label_balance, G_TYPE_STRING },
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{ 'h', "hardcode", NULL, G_TYPE_NONE },
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{ 'n', "noautosync", NULL, G_TYPE_NONE },
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{ 's', "slice", &label_slice, G_TYPE_NUMBER },
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G_OPT_SENTINEL
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}
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},
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{ "insert", G_FLAG_VERBOSE, NULL,
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{
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{ 'h', "hardcode", NULL, G_TYPE_NONE },
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{ 'i', "inactive", NULL, G_TYPE_NONE },
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{ 'p', "priority", &insert_priority, G_TYPE_NUMBER },
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G_OPT_SENTINEL
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}
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},
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{ "rebuild", G_FLAG_VERBOSE, NULL, G_NULL_OPTS },
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{ "remove", G_FLAG_VERBOSE, NULL, G_NULL_OPTS },
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{ "stop", G_FLAG_VERBOSE, NULL,
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{
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{ 'f', "force", NULL, G_TYPE_NONE },
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G_OPT_SENTINEL
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}
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},
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G_CMD_SENTINEL
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};
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static int verbose = 0;
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void usage(const char *);
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void
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usage(const char *comm)
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{
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fprintf(stderr,
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"usage: %s label [-hnv] [-b balance] [-s slice] name prov [prov [...]]\n"
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" %s clear [-v] prov [prov [...]]\n"
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" %s dump prov [prov [...]]\n"
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" %s configure [-adhnv] [-b balance] [-s slice] name\n"
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" %s rebuild [-v] name prov [prov [...]]\n"
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" %s insert [-hiv] [-p priority] name prov [prov [...]]\n"
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" %s remove [-v] name prov [prov [...]]\n"
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" %s activate [-v] name prov [prov [...]]\n"
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" %s deactivate [-v] name prov [prov [...]]\n"
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" %s forget prov [prov [...]]\n"
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" %s stop [-fv] name [...]\n",
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comm, comm, comm, comm, comm, comm, comm, comm, comm, comm, comm);
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exit(EXIT_FAILURE);
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}
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static void
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mirror_main(struct gctl_req *req, unsigned flags)
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{
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const char *name;
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if ((flags & G_FLAG_VERBOSE) != 0)
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verbose = 1;
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name = gctl_get_asciiparam(req, "verb");
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if (name == NULL) {
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gctl_error(req, "No '%s' argument.", "verb");
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return;
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}
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if (strcmp(name, "label") == 0)
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mirror_label(req);
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else if (strcmp(name, "clear") == 0)
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mirror_clear(req);
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else if (strcmp(name, "dump") == 0)
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mirror_dump(req);
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else if (strcmp(name, "activate") == 0)
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mirror_activate(req);
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else
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gctl_error(req, "Unknown command: %s.", name);
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}
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static void
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mirror_label(struct gctl_req *req)
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{
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struct g_mirror_metadata md;
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u_char sector[512];
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const char *str;
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char param[16];
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int *hardcode, *nargs, *noautosync, bal, error, i;
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unsigned sectorsize;
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off_t mediasize;
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intmax_t *valp;
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nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
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if (nargs == NULL) {
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gctl_error(req, "No '%s' argument.", "nargs");
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return;
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}
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if (*nargs < 2) {
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gctl_error(req, "Too few arguments.");
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return;
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}
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strlcpy(md.md_magic, G_MIRROR_MAGIC, sizeof(md.md_magic));
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md.md_version = G_MIRROR_VERSION;
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str = gctl_get_asciiparam(req, "arg0");
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if (str == NULL) {
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gctl_error(req, "No 'arg%u' argument.", 0);
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return;
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}
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strlcpy(md.md_name, str, sizeof(md.md_name));
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md.md_mid = arc4random();
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md.md_all = *nargs - 1;
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md.md_mflags = 0;
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md.md_dflags = 0;
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md.md_syncid = 1;
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md.md_sync_offset = 0;
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valp = gctl_get_paraml(req, "slice", sizeof(*valp));
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if (valp == NULL) {
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gctl_error(req, "No '%s' argument.", "slice");
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return;
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}
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md.md_slice = *valp;
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str = gctl_get_asciiparam(req, "balance");
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if (str == NULL) {
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gctl_error(req, "No '%s' argument.", "balance");
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return;
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}
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bal = balance_id(str);
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if (bal == -1) {
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gctl_error(req, "Wrong balance algorithm.");
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return;
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}
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md.md_balance = bal;
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noautosync = gctl_get_paraml(req, "noautosync", sizeof(*noautosync));
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if (noautosync == NULL) {
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gctl_error(req, "No '%s' argument.", "noautosync");
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return;
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}
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if (*noautosync)
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md.md_mflags |= G_MIRROR_DEVICE_FLAG_NOAUTOSYNC;
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hardcode = gctl_get_paraml(req, "hardcode", sizeof(*hardcode));
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if (hardcode == NULL) {
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gctl_error(req, "No '%s' argument.", "hardcode");
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return;
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}
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/*
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* Calculate sectorsize by finding least common multiple from
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* sectorsizes of every disk and find the smallest mediasize.
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*/
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mediasize = 0;
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sectorsize = 0;
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for (i = 1; i < *nargs; i++) {
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unsigned ssize;
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off_t msize;
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snprintf(param, sizeof(param), "arg%u", i);
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str = gctl_get_asciiparam(req, param);
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msize = g_get_mediasize(str);
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ssize = g_get_sectorsize(str);
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if (msize == 0 || ssize == 0) {
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gctl_error(req, "Can't get informations about %s: %s.",
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str, strerror(errno));
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return;
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}
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msize -= ssize;
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if (mediasize == 0 || (mediasize > 0 && msize < mediasize))
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mediasize = msize;
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if (sectorsize == 0)
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sectorsize = ssize;
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else
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sectorsize = g_lcm(sectorsize, ssize);
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}
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md.md_mediasize = mediasize;
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md.md_sectorsize = sectorsize;
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/*
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* Clear last sector first, to spoil all components if device exists.
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*/
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for (i = 1; i < *nargs; i++) {
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snprintf(param, sizeof(param), "arg%u", i);
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str = gctl_get_asciiparam(req, param);
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error = g_metadata_clear(str, NULL);
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if (error != 0) {
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gctl_error(req, "Can't store metadata on %s: %s.", str,
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strerror(error));
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return;
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}
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}
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/*
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* Ok, store metadata (use disk number as priority).
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*/
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for (i = 1; i < *nargs; i++) {
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snprintf(param, sizeof(param), "arg%u", i);
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str = gctl_get_asciiparam(req, param);
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md.md_did = arc4random();
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md.md_priority = i - 1;
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if (!*hardcode)
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bzero(md.md_provider, sizeof(md.md_provider));
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else {
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if (strncmp(str, _PATH_DEV, strlen(_PATH_DEV)) == 0)
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str += strlen(_PATH_DEV);
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strlcpy(md.md_provider, str, sizeof(md.md_provider));
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}
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mirror_metadata_encode(&md, sector);
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error = g_metadata_store(str, sector, sizeof(sector));
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if (error != 0) {
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fprintf(stderr, "Can't store metadata on %s: %s.\n",
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str, strerror(error));
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gctl_error(req, "Not fully done.");
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continue;
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}
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if (verbose)
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printf("Metadata value stored on %s.\n", str);
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}
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}
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static void
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mirror_clear(struct gctl_req *req)
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{
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const char *name;
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char param[16];
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int *nargs, error, i;
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nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
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if (nargs == NULL) {
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gctl_error(req, "No '%s' argument.", "nargs");
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return;
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}
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if (*nargs < 1) {
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gctl_error(req, "Too few arguments.");
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return;
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}
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for (i = 0; i < *nargs; i++) {
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snprintf(param, sizeof(param), "arg%u", i);
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name = gctl_get_asciiparam(req, param);
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error = g_metadata_clear(name, G_MIRROR_MAGIC);
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if (error != 0) {
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fprintf(stderr, "Can't clear metadata on %s: %s.\n",
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name, strerror(error));
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gctl_error(req, "Not fully done.");
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continue;
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}
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if (verbose)
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printf("Metadata cleared on %s.\n", name);
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}
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}
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static void
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mirror_dump(struct gctl_req *req)
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{
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struct g_mirror_metadata md, tmpmd;
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const char *name;
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char param[16];
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int *nargs, error, i;
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nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
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if (nargs == NULL) {
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gctl_error(req, "No '%s' argument.", "nargs");
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return;
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}
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if (*nargs < 1) {
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gctl_error(req, "Too few arguments.");
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return;
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}
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for (i = 0; i < *nargs; i++) {
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snprintf(param, sizeof(param), "arg%u", i);
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name = gctl_get_asciiparam(req, param);
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error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd),
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G_MIRROR_MAGIC);
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if (error != 0) {
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fprintf(stderr, "Can't read metadata from %s: %s.\n",
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name, strerror(error));
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gctl_error(req, "Not fully done.");
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continue;
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}
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if (mirror_metadata_decode((u_char *)&tmpmd, &md) != 0) {
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fprintf(stderr, "MD5 hash mismatch for %s, skipping.\n",
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name);
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gctl_error(req, "Not fully done.");
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continue;
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}
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printf("Metadata on %s:\n", name);
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mirror_metadata_dump(&md);
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printf("\n");
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}
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}
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static void
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mirror_activate(struct gctl_req *req)
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{
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struct g_mirror_metadata md, tmpmd;
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const char *name, *path;
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int *nargs, error, i;
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char param[16];
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nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
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if (nargs == NULL) {
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gctl_error(req, "No '%s' argument.", "nargs");
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return;
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}
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if (*nargs < 2) {
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gctl_error(req, "Too few arguments.");
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return;
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}
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name = gctl_get_asciiparam(req, "arg0");
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if (name == NULL) {
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gctl_error(req, "No 'arg%u' argument.", 0);
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return;
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}
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for (i = 1; i < *nargs; i++) {
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snprintf(param, sizeof(param), "arg%u", i);
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path = gctl_get_asciiparam(req, param);
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error = g_metadata_read(path, (u_char *)&tmpmd, sizeof(tmpmd),
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G_MIRROR_MAGIC);
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if (error != 0) {
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fprintf(stderr, "Cannot read metadata from %s: %s.\n",
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path, strerror(error));
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gctl_error(req, "Not fully done.");
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continue;
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}
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if (mirror_metadata_decode((u_char *)&tmpmd, &md) != 0) {
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fprintf(stderr,
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"MD5 hash mismatch for provider %s, skipping.\n",
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path);
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gctl_error(req, "Not fully done.");
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continue;
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}
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if (strcmp(md.md_name, name) != 0) {
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fprintf(stderr,
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"Provider %s is not the mirror %s component.\n",
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path, name);
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gctl_error(req, "Not fully done.");
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continue;
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}
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md.md_dflags &= ~G_MIRROR_DISK_FLAG_INACTIVE;
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mirror_metadata_encode(&md, (u_char *)&tmpmd);
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error = g_metadata_store(path, (u_char *)&tmpmd, sizeof(tmpmd));
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if (error != 0) {
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fprintf(stderr, "Cannot write metadata from %s: %s.\n",
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path, strerror(error));
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gctl_error(req, "Not fully done.");
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continue;
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}
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if (verbose)
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printf("Provider %s activated.\n", path);
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}
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}
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