diff options
Diffstat (limited to 'lib/geom/raid3/geom_raid3.c')
| -rw-r--r-- | lib/geom/raid3/geom_raid3.c | 335 |
1 files changed, 335 insertions, 0 deletions
diff --git a/lib/geom/raid3/geom_raid3.c b/lib/geom/raid3/geom_raid3.c new file mode 100644 index 000000000000..4967cec75448 --- /dev/null +++ b/lib/geom/raid3/geom_raid3.c @@ -0,0 +1,335 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/param.h> +#include <errno.h> +#include <paths.h> +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> +#include <string.h> +#include <strings.h> +#include <assert.h> +#include <libgeom.h> +#include <geom/raid3/g_raid3.h> +#include <core/geom.h> +#include <misc/subr.h> + + +uint32_t lib_version = G_LIB_VERSION; +uint32_t version = G_RAID3_VERSION; + +static void raid3_main(struct gctl_req *req, unsigned f); +static void raid3_clear(struct gctl_req *req); +static void raid3_dump(struct gctl_req *req); +static void raid3_label(struct gctl_req *req); + +struct g_command class_commands[] = { + { "clear", G_FLAG_VERBOSE, raid3_main, G_NULL_OPTS, + "[-v] prov ..." + }, + { "configure", G_FLAG_VERBOSE, NULL, + { + { 'a', "autosync", NULL, G_TYPE_BOOL }, + { 'd', "dynamic", NULL, G_TYPE_BOOL }, + { 'f', "failsync", NULL, G_TYPE_BOOL }, + { 'F', "nofailsync", NULL, G_TYPE_BOOL }, + { 'h', "hardcode", NULL, G_TYPE_BOOL }, + { 'n', "noautosync", NULL, G_TYPE_BOOL }, + { 'r', "round_robin", NULL, G_TYPE_BOOL }, + { 'R', "noround_robin", NULL, G_TYPE_BOOL }, + { 'w', "verify", NULL, G_TYPE_BOOL }, + { 'W', "noverify", NULL, G_TYPE_BOOL }, + G_OPT_SENTINEL + }, + "[-adfFhnrRvwW] name" + }, + { "dump", 0, raid3_main, G_NULL_OPTS, + "prov ..." + }, + { "insert", G_FLAG_VERBOSE, NULL, + { + { 'h', "hardcode", NULL, G_TYPE_BOOL }, + { 'n', "number", G_VAL_OPTIONAL, G_TYPE_NUMBER }, + G_OPT_SENTINEL + }, + "[-hv] <-n number> name prov" + }, + { "label", G_FLAG_VERBOSE, raid3_main, + { + { 'h', "hardcode", NULL, G_TYPE_BOOL }, + { 'F', "nofailsync", NULL, G_TYPE_BOOL }, + { 'n', "noautosync", NULL, G_TYPE_BOOL }, + { 'r', "round_robin", NULL, G_TYPE_BOOL }, + { 's', "sectorsize", "0", G_TYPE_NUMBER }, + { 'w', "verify", NULL, G_TYPE_BOOL }, + G_OPT_SENTINEL + }, + "[-hFnrvw] [-s blocksize] name prov prov prov ..." + }, + { "rebuild", G_FLAG_VERBOSE, NULL, G_NULL_OPTS, + "[-v] name prov" + }, + { "remove", G_FLAG_VERBOSE, NULL, + { + { 'n', "number", NULL, G_TYPE_NUMBER }, + G_OPT_SENTINEL + }, + "[-v] <-n number> name" + }, + { "stop", G_FLAG_VERBOSE, NULL, + { + { 'f', "force", NULL, G_TYPE_BOOL }, + G_OPT_SENTINEL + }, + "[-fv] name ..." + }, + G_CMD_SENTINEL +}; + +static int verbose = 0; + +static void +raid3_main(struct gctl_req *req, unsigned flags) +{ + const char *name; + + if ((flags & G_FLAG_VERBOSE) != 0) + verbose = 1; + + name = gctl_get_ascii(req, "verb"); + if (name == NULL) { + gctl_error(req, "No '%s' argument.", "verb"); + return; + } + if (strcmp(name, "label") == 0) + raid3_label(req); + else if (strcmp(name, "clear") == 0) + raid3_clear(req); + else if (strcmp(name, "dump") == 0) + raid3_dump(req); + else + gctl_error(req, "Unknown command: %s.", name); +} + +static void +raid3_label(struct gctl_req *req) +{ + struct g_raid3_metadata md; + u_char sector[512]; + const char *str; + unsigned sectorsize, ssize; + off_t mediasize, msize; + int hardcode, round_robin, verify; + int error, i, nargs; + + bzero(sector, sizeof(sector)); + nargs = gctl_get_int(req, "nargs"); + if (nargs < 4) { + gctl_error(req, "Too few arguments."); + return; + } + if (bitcount32(nargs - 2) != 1) { + gctl_error(req, "Invalid number of components."); + return; + } + + strlcpy(md.md_magic, G_RAID3_MAGIC, sizeof(md.md_magic)); + md.md_version = G_RAID3_VERSION; + str = gctl_get_ascii(req, "arg0"); + strlcpy(md.md_name, str, sizeof(md.md_name)); + md.md_id = arc4random(); + md.md_all = nargs - 1; + md.md_mflags = 0; + md.md_dflags = 0; + md.md_genid = 0; + md.md_syncid = 1; + md.md_sync_offset = 0; + if (gctl_get_int(req, "noautosync")) + md.md_mflags |= G_RAID3_DEVICE_FLAG_NOAUTOSYNC; + if (gctl_get_int(req, "nofailsync")) + md.md_mflags |= G_RAID3_DEVICE_FLAG_NOFAILSYNC; + round_robin = gctl_get_int(req, "round_robin"); + if (round_robin) + md.md_mflags |= G_RAID3_DEVICE_FLAG_ROUND_ROBIN; + verify = gctl_get_int(req, "verify"); + if (verify) + md.md_mflags |= G_RAID3_DEVICE_FLAG_VERIFY; + if (round_robin && verify) { + gctl_error(req, "Both '%c' and '%c' options given.", 'r', 'w'); + return; + } + hardcode = gctl_get_int(req, "hardcode"); + + /* + * Calculate sectorsize by finding least common multiple from + * sectorsizes of every disk and find the smallest mediasize. + */ + mediasize = 0; + sectorsize = gctl_get_intmax(req, "sectorsize"); + for (i = 1; i < nargs; i++) { + str = gctl_get_ascii(req, "arg%d", i); + msize = g_get_mediasize(str); + ssize = g_get_sectorsize(str); + if (msize == 0 || ssize == 0) { + gctl_error(req, "Can't get informations about %s: %s.", + str, strerror(errno)); + return; + } + msize -= ssize; + if (mediasize == 0 || (mediasize > 0 && msize < mediasize)) + mediasize = msize; + if (sectorsize == 0) + sectorsize = ssize; + else + sectorsize = g_lcm(sectorsize, ssize); + } + md.md_mediasize = mediasize * (nargs - 2); + md.md_sectorsize = sectorsize * (nargs - 2); + md.md_mediasize -= (md.md_mediasize % md.md_sectorsize); + + if (md.md_sectorsize > MAXPHYS) { + gctl_error(req, "The blocksize is too big."); + return; + } + + /* + * Clear last sector first, to spoil all components if device exists. + */ + for (i = 1; i < nargs; i++) { + str = gctl_get_ascii(req, "arg%d", i); + error = g_metadata_clear(str, NULL); + if (error != 0) { + gctl_error(req, "Can't store metadata on %s: %s.", str, + strerror(error)); + return; + } + } + + /* + * Ok, store metadata (use disk number as priority). + */ + for (i = 1; i < nargs; i++) { + str = gctl_get_ascii(req, "arg%d", i); + msize = g_get_mediasize(str); + ssize = g_get_sectorsize(str); + if (mediasize < msize - ssize) { + fprintf(stderr, + "warning: %s: only %jd bytes from %jd bytes used.\n", + str, (intmax_t)mediasize, (intmax_t)(msize - ssize)); + } + + md.md_no = i - 1; + md.md_provsize = msize; + if (!hardcode) + bzero(md.md_provider, sizeof(md.md_provider)); + else { + if (strncmp(str, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) + str += sizeof(_PATH_DEV) - 1; + strlcpy(md.md_provider, str, sizeof(md.md_provider)); + } + if (verify && md.md_no == md.md_all - 1) { + /* + * In "verify" mode, force synchronization of parity + * component on start. + */ + md.md_syncid = 0; + } + raid3_metadata_encode(&md, sector); + error = g_metadata_store(str, sector, sizeof(sector)); + if (error != 0) { + fprintf(stderr, "Can't store metadata on %s: %s.\n", + str, strerror(error)); + gctl_error(req, "Not fully done."); + continue; + } + if (verbose) + printf("Metadata value stored on %s.\n", str); + } +} + +static void +raid3_clear(struct gctl_req *req) +{ + const char *name; + int error, i, nargs; + + nargs = gctl_get_int(req, "nargs"); + if (nargs < 1) { + gctl_error(req, "Too few arguments."); + return; + } + + for (i = 0; i < nargs; i++) { + name = gctl_get_ascii(req, "arg%d", i); + error = g_metadata_clear(name, G_RAID3_MAGIC); + if (error != 0) { + fprintf(stderr, "Can't clear metadata on %s: %s.\n", + name, strerror(error)); + gctl_error(req, "Not fully done."); + continue; + } + if (verbose) + printf("Metadata cleared on %s.\n", name); + } +} + +static void +raid3_dump(struct gctl_req *req) +{ + struct g_raid3_metadata md, tmpmd; + const char *name; + int error, i, nargs; + + nargs = gctl_get_int(req, "nargs"); + if (nargs < 1) { + gctl_error(req, "Too few arguments."); + return; + } + + for (i = 0; i < nargs; i++) { + name = gctl_get_ascii(req, "arg%d", i); + error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd), + G_RAID3_MAGIC); + if (error != 0) { + fprintf(stderr, "Can't read metadata from %s: %s.\n", + name, strerror(error)); + gctl_error(req, "Not fully done."); + continue; + } + if (raid3_metadata_decode((u_char *)&tmpmd, &md) != 0) { + fprintf(stderr, "MD5 hash mismatch for %s, skipping.\n", + name); + gctl_error(req, "Not fully done."); + continue; + } + printf("Metadata on %s:\n", name); + raid3_metadata_dump(&md); + printf("\n"); + } +} |