diff options
Diffstat (limited to 'sbin/geom/class')
| -rw-r--r-- | sbin/geom/class/mirror/Makefile | 11 | ||||
| -rw-r--r-- | sbin/geom/class/mirror/geom_mirror.c | 408 |
2 files changed, 419 insertions, 0 deletions
diff --git a/sbin/geom/class/mirror/Makefile b/sbin/geom/class/mirror/Makefile new file mode 100644 index 0000000..fc6c360 --- /dev/null +++ b/sbin/geom/class/mirror/Makefile @@ -0,0 +1,11 @@ +# $FreeBSD$ + +.PATH: ${.CURDIR}/../../misc + +CLASS= mirror + +NOMAN= notyet +DPADD= ${LIBMD} +LDADD= -lmd + +.include <bsd.lib.mk> diff --git a/sbin/geom/class/mirror/geom_mirror.c b/sbin/geom/class/mirror/geom_mirror.c new file mode 100644 index 0000000..66174b7 --- /dev/null +++ b/sbin/geom/class/mirror/geom_mirror.c @@ -0,0 +1,408 @@ +/*- + * Copyright (c) 2004 Pawel Jakub Dawidek <pjd@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> +#include <string.h> +#include <strings.h> +#include <assert.h> +#include <libgeom.h> +#include <geom/mirror/g_mirror.h> +#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[] = "split", configure_balance[] = "none"; +static intmax_t label_slice = 4096, configure_slice = -1; + +static void mirror_main(struct gctl_req *req, unsigned f); +static void mirror_activate(struct gctl_req *req); +static void mirror_clear(struct gctl_req *req); +static void mirror_dump(struct gctl_req *req); +static void mirror_label(struct gctl_req *req); + +struct g_command class_commands[] = { + { "activate", G_FLAG_VERBOSE, mirror_main, G_NULL_OPTS }, + { "clear", G_FLAG_VERBOSE, mirror_main, G_NULL_OPTS }, + { "configure", G_FLAG_VERBOSE, NULL, + { + { 'a', "autosync", NULL, G_TYPE_NONE }, + { 'b', "balance", configure_balance, G_TYPE_STRING }, + { 'n', "noautosync", NULL, G_TYPE_NONE }, + { 's', "slice", &configure_slice, G_TYPE_NUMBER }, + G_OPT_SENTINEL + } + }, + { "deactivate", G_FLAG_VERBOSE, NULL, G_NULL_OPTS }, + { "dump", 0, mirror_main, G_NULL_OPTS }, + { "forget", G_FLAG_VERBOSE, NULL, G_NULL_OPTS }, + { "label", G_FLAG_VERBOSE, mirror_main, + { + { 'b', "balance", label_balance, G_TYPE_STRING }, + { 'n', "noautosync", NULL, G_TYPE_NONE }, + { 's', "slice", &label_slice, G_TYPE_NUMBER }, + G_OPT_SENTINEL + } + }, + { "insert", G_FLAG_VERBOSE, NULL, + { + { 'i', "inactive", NULL, G_TYPE_NONE }, + G_OPT_SENTINEL + } + }, + { "rebuild", G_FLAG_VERBOSE, NULL, G_NULL_OPTS }, + { "remove", G_FLAG_VERBOSE, NULL, G_NULL_OPTS }, + { "stop", G_FLAG_VERBOSE, NULL, + { + { 'f', "force", NULL, G_TYPE_NONE }, + G_OPT_SENTINEL + } + }, + G_CMD_SENTINEL +}; + +static int verbose = 0; + +void usage(const char *); +void +usage(const char *comm) +{ + fprintf(stderr, + "usage: %s label [-nv] [-b balance] [-s slice] name dev1 [dev2 [...]]\n" + " %s clear [-v] dev1 [dev2 [...]]\n" + " %s dump dev1 [dev2 [...]]\n" + " %s configure [-anv] [-b balance] [-s slice] name\n" + " %s rebuild [-v] name dev1 [dev2 [...]]\n" + " %s insert [-iv] name dev1 [dev2 [...]]\n" + " %s remove [-v] name dev1 [dev2 [...]]\n" + " %s activate [-v] name dev1 [dev2 [...]]\n" + " %s deactivate [-v] name dev1 [dev2 [...]]\n" + " %s forget dev1 [dev2 [...]]\n" + " %s stop [-fv] name\n", + comm, comm, comm, comm, comm, comm, comm, comm, comm, comm, comm); + exit(EXIT_FAILURE); +} + +static void +mirror_main(struct gctl_req *req, unsigned f) +{ + const char *name; + + if ((f & G_FLAG_VERBOSE) != 0) + verbose = 1; + + name = gctl_get_asciiparam(req, "verb"); + if (name == NULL) { + gctl_error(req, "No '%s' argument.", "verb"); + return; + } + if (strcmp(name, "label") == 0) + mirror_label(req); + else if (strcmp(name, "clear") == 0) + mirror_clear(req); + else if (strcmp(name, "dump") == 0) + mirror_dump(req); + else if (strcmp(name, "activate") == 0) + mirror_activate(req); + else + gctl_error(req, "Unknown command: %s.", name); +} + +static void +mirror_label(struct gctl_req *req) +{ + struct g_mirror_metadata md; + u_char sector[512]; + const char *str; + char param[16]; + int *nargs, *noautosync, bal, error, i; + unsigned sectorsize; + off_t mediasize; + intmax_t *valp; + + nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); + if (nargs == NULL) { + gctl_error(req, "No '%s' argument.", "nargs"); + return; + } + if (*nargs < 2) { + gctl_error(req, "Too few arguments."); + return; + } + + strlcpy(md.md_magic, G_MIRROR_MAGIC, sizeof(md.md_magic)); + md.md_version = G_MIRROR_VERSION; + str = gctl_get_asciiparam(req, "arg0"); + if (str == NULL) { + gctl_error(req, "No 'arg%u' argument.", 0); + return; + } + strlcpy(md.md_name, str, sizeof(md.md_name)); + md.md_mid = arc4random(); + md.md_all = *nargs - 1; + md.md_mflags = 0; + md.md_dflags = 0; + md.md_syncid = 1; + md.md_sync_offset = 0; + valp = gctl_get_paraml(req, "slice", sizeof(*valp)); + if (valp == NULL) { + gctl_error(req, "No '%s' argument.", "slice"); + return; + } + md.md_slice = *valp; + str = gctl_get_asciiparam(req, "balance"); + if (str == NULL) { + gctl_error(req, "No '%s' argument.", "balance"); + return; + } + bal = balance_id(str); + if (bal == -1) { + gctl_error(req, "Wrong balance algorithm."); + return; + } + md.md_balance = bal; + noautosync = gctl_get_paraml(req, "noautosync", sizeof(*noautosync)); + if (noautosync == NULL) { + gctl_error(req, "No '%s' argument.", "noautosync"); + return; + } + if (*noautosync) + md.md_mflags |= G_MIRROR_DEVICE_FLAG_NOAUTOSYNC; + + /* + * Calculate sectorsize by finding least common multiple from + * sectorsizes of every disk and find the smallest mediasize. + */ + mediasize = 0; + sectorsize = 0; + for (i = 1; i < *nargs; i++) { + unsigned ssize; + off_t msize; + + snprintf(param, sizeof(param), "arg%u", i); + str = gctl_get_asciiparam(req, param); + + 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; + md.md_sectorsize = sectorsize; + + /* + * Clear last sector first, to spoil all components if device exists. + */ + for (i = 1; i < *nargs; i++) { + snprintf(param, sizeof(param), "arg%u", i); + str = gctl_get_asciiparam(req, param); + + 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++) { + snprintf(param, sizeof(param), "arg%u", i); + str = gctl_get_asciiparam(req, param); + + md.md_did = arc4random(); + md.md_priority = i - 1; + mirror_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 +mirror_clear(struct gctl_req *req) +{ + const char *name; + char param[16]; + int *nargs, error, i; + + nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); + if (nargs == NULL) { + gctl_error(req, "No '%s' argument.", "nargs"); + return; + } + if (*nargs < 1) { + gctl_error(req, "Too few arguments."); + return; + } + + for (i = 0; i < *nargs; i++) { + snprintf(param, sizeof(param), "arg%u", i); + name = gctl_get_asciiparam(req, param); + + error = g_metadata_clear(name, G_MIRROR_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 +mirror_dump(struct gctl_req *req) +{ + struct g_mirror_metadata md, tmpmd; + const char *name; + char param[16]; + int *nargs, error, i; + + nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); + if (nargs == NULL) { + gctl_error(req, "No '%s' argument.", "nargs"); + return; + } + if (*nargs < 1) { + gctl_error(req, "Too few arguments."); + return; + } + + for (i = 0; i < *nargs; i++) { + snprintf(param, sizeof(param), "arg%u", i); + name = gctl_get_asciiparam(req, param); + + error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd), + G_MIRROR_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 (mirror_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); + mirror_metadata_dump(&md); + printf("\n"); + } +} + +static void +mirror_activate(struct gctl_req *req) +{ + struct g_mirror_metadata md, tmpmd; + const char *name, *path; + int *nargs, error, i; + char param[16]; + + nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); + if (nargs == NULL) { + gctl_error(req, "No '%s' argument.", "nargs"); + return; + } + if (*nargs < 2) { + gctl_error(req, "Too few arguments."); + return; + } + name = gctl_get_asciiparam(req, "arg0"); + if (name == NULL) { + gctl_error(req, "No 'arg%u' argument.", 0); + return; + } + + for (i = 1; i < *nargs; i++) { + snprintf(param, sizeof(param), "arg%u", i); + path = gctl_get_asciiparam(req, param); + + error = g_metadata_read(path, (u_char *)&tmpmd, sizeof(tmpmd), + G_MIRROR_MAGIC); + if (error != 0) { + fprintf(stderr, "Cannot read metadata from %s: %s.\n", + path, strerror(error)); + gctl_error(req, "Not fully done."); + continue; + } + if (mirror_metadata_decode((u_char *)&tmpmd, &md) != 0) { + fprintf(stderr, + "MD5 hash mismatch for provider %s, skipping.\n", + path); + gctl_error(req, "Not fully done."); + continue; + } + if (strcmp(md.md_name, name) != 0) { + fprintf(stderr, + "Provider %s is not the mirror %s component.\n", + path, name); + gctl_error(req, "Not fully done."); + continue; + } + md.md_dflags &= ~G_MIRROR_DISK_FLAG_INACTIVE; + mirror_metadata_encode(&md, (u_char *)&tmpmd); + error = g_metadata_store(path, (u_char *)&tmpmd, sizeof(tmpmd)); + if (error != 0) { + fprintf(stderr, "Cannot write metadata from %s: %s.\n", + path, strerror(error)); + gctl_error(req, "Not fully done."); + continue; + } + if (verbose) + printf("Provider %s activated.\n", path); + } +} |
