+/*
+ * snippets copied from device-mapper dmsetup.c
+ * Copyright (c) 2004, 2005 Christophe Varoqui
+ * Copyright (c) 2005 Kiyoshi Ueda, NEC
+ * Copyright (c) 2005 Patrick Caulfield, Redhat
+ */
#include <stdio.h>
#include <stdlib.h>
+#include <stdarg.h>
#include <string.h>
#include <libdevmapper.h>
#include <ctype.h>
-#include <linux/kdev_t.h>
#include <unistd.h>
+#include <errno.h>
+#include <sys/sysmacros.h>
+#include "checkers.h"
#include "vector.h"
#include "structs.h"
#include "debug.h"
#include "memory.h"
#include "devmapper.h"
+#include "sysfs.h"
+#include "config.h"
+#include "log_pthread.h"
+#include <sys/types.h>
+#include <time.h>
+
+#define FREE_CONST(p) do { free((void*)(unsigned long)p); p = NULL; } while(0)
#define MAX_WAIT 5
#define LOOPS_PER_SEC 5
+static int dm_conf_verbosity;
+
+#ifdef LIBDM_API_DEFERRED
+static int dm_cancel_remove_partmaps(const char * mapname);
+#endif
+
+static int do_foreach_partmaps(const char * mapname,
+ int (*partmap_func)(const char *, void *),
+ void *data);
+
+#ifndef LIBDM_API_COOKIE
+static inline int dm_task_set_cookie(struct dm_task *dmt, uint32_t *c, int a)
+{
+ return 1;
+}
+
+void dm_udev_wait(unsigned int c)
+{
+}
+
+void dm_udev_set_sync_support(int c)
+{
+}
+
+#endif
+
static void
-dm_dummy_log (int level, const char *file, int line, const char *f, ...)
+dm_write_log (int level, const char *file, int line, const char *f, ...)
{
+ va_list ap;
+ int thres;
+
+ if (level > 6)
+ level = 6;
+
+ thres = dm_conf_verbosity;
+ if (thres <= 3 || level > thres)
+ return;
+
+ va_start(ap, f);
+ if (logsink < 1) {
+ if (logsink == 0) {
+ time_t t = time(NULL);
+ struct tm *tb = localtime(&t);
+ char buff[16];
+
+ strftime(buff, sizeof(buff), "%b %d %H:%M:%S", tb);
+ buff[sizeof(buff)-1] = '\0';
+
+ fprintf(stdout, "%s | ", buff);
+ }
+ fprintf(stdout, "libdevmapper: %s(%i): ", file, line);
+ vfprintf(stdout, f, ap);
+ fprintf(stdout, "\n");
+ } else {
+ condlog(level, "libdevmapper: %s(%i): ", file, line);
+ log_safe(level + 3, f, ap);
+ }
+ va_end(ap);
+
return;
}
-static void
-dm_restore_log (void)
+void dm_init(int v)
{
- dm_log_init(NULL);
+ dm_log_init(&dm_write_log);
+ dm_log_init_verbose(v + 3);
}
-static void
-dm_shut_log (void)
+static int
+dm_lib_prereq (void)
{
- dm_log_init(&dm_dummy_log);
+ char version[64];
+ int v[3];
+#if defined(LIBDM_API_DEFERRED)
+ int minv[3] = {1, 2, 89};
+#elif defined(DM_SUBSYSTEM_UDEV_FLAG0)
+ int minv[3] = {1, 2, 82};
+#elif defined(LIBDM_API_COOKIE)
+ int minv[3] = {1, 2, 38};
+#else
+ int minv[3] = {1, 2, 8};
+#endif
+
+ dm_get_library_version(version, sizeof(version));
+ condlog(3, "libdevmapper version %s", version);
+ if (sscanf(version, "%d.%d.%d ", &v[0], &v[1], &v[2]) != 3) {
+ condlog(0, "invalid libdevmapper version %s", version);
+ return 1;
+ }
+
+ if VERSION_GE(v, minv)
+ return 0;
+ condlog(0, "libdevmapper version must be >= %d.%.2d.%.2d",
+ minv[0], minv[1], minv[2]);
+ return 1;
}
-extern int
-dm_prereq (char * str, int x, int y, int z)
+int
+dm_drv_version (unsigned int * version, char * str)
{
int r = 2;
struct dm_task *dmt;
struct dm_versions *target;
struct dm_versions *last_target;
+ unsigned int *v;
+
+ version[0] = 0;
+ version[1] = 0;
+ version[2] = 0;
if (!(dmt = dm_task_create(DM_DEVICE_LIST_VERSIONS)))
- return 3;
+ return 1;
dm_task_no_open_count(dmt);
condlog(0, "Can not communicate with kernel DM");
goto out;
}
-
target = dm_task_get_versions(dmt);
do {
last_target = target;
-
if (!strncmp(str, target->name, strlen(str))) {
- r--;
-
- if (target->version[0] >= x &&
- target->version[1] >= y &&
- target->version[2] >= z)
- r--;
-
+ r = 1;
break;
}
-
target = (void *) target + target->next;
} while (last_target != target);
- if (r == 2)
- condlog(0, "DM multipath kernel driver not loaded");
- else if (r == 1)
- condlog(0, "DM multipath kernel driver version too old");
-
+ if (r == 2) {
+ condlog(0, "DM %s kernel driver not loaded", str);
+ goto out;
+ }
+ v = target->version;
+ version[0] = v[0];
+ version[1] = v[1];
+ version[2] = v[2];
+ r = 0;
out:
dm_task_destroy(dmt);
return r;
}
-extern int
-dm_simplecmd (int task, const char *name) {
+static int
+dm_drv_prereq (unsigned int *ver)
+{
+ unsigned int minv[3] = {1, 0, 3};
+ unsigned int version[3] = {0, 0, 0};
+ unsigned int * v = version;
+
+ if (dm_drv_version(v, TGT_MPATH)) {
+ /* in doubt return not capable */
+ return 1;
+ }
+
+ /* test request based multipath capability */
+ condlog(3, "DM multipath kernel driver v%u.%u.%u",
+ v[0], v[1], v[2]);
+
+ if (VERSION_GE(v, minv)) {
+ ver[0] = v[0];
+ ver[1] = v[1];
+ ver[2] = v[2];
+ return 0;
+ }
+
+ condlog(0, "DM multipath kernel driver must be >= v%u.%u.%u",
+ minv[0], minv[1], minv[2]);
+ return 1;
+}
+
+static int dm_prereq(unsigned int *v)
+{
+ if (dm_lib_prereq())
+ return 1;
+ return dm_drv_prereq(v);
+}
+
+static int libmp_dm_udev_sync = 0;
+
+void libmp_udev_set_sync_support(int on)
+{
+ libmp_dm_udev_sync = !!on;
+}
+
+void libmp_dm_init(void)
+{
+ struct config *conf;
+
+ conf = get_multipath_config();
+ dm_init(conf->verbosity);
+ if (dm_prereq(conf->version))
+ exit(1);
+ put_multipath_config(conf);
+ dm_udev_set_sync_support(libmp_dm_udev_sync);
+}
+
+struct dm_task*
+libmp_dm_task_create(int task)
+{
+ static pthread_once_t dm_initialized = PTHREAD_ONCE_INIT;
+
+ pthread_once(&dm_initialized, libmp_dm_init);
+ return dm_task_create(task);
+}
+
+#define do_deferred(x) ((x) == DEFERRED_REMOVE_ON || (x) == DEFERRED_REMOVE_IN_PROGRESS)
+
+static int
+dm_simplecmd (int task, const char *name, int no_flush, int need_sync, uint16_t udev_flags, int deferred_remove) {
int r = 0;
+ int udev_wait_flag = ((need_sync || udev_flags) &&
+ (task == DM_DEVICE_RESUME ||
+ task == DM_DEVICE_REMOVE));
+ uint32_t cookie = 0;
struct dm_task *dmt;
- if (!(dmt = dm_task_create (task)))
+ if (!(dmt = libmp_dm_task_create (task)))
return 0;
if (!dm_task_set_name (dmt, name))
goto out;
dm_task_no_open_count(dmt);
+ dm_task_skip_lockfs(dmt); /* for DM_DEVICE_RESUME */
+#ifdef LIBDM_API_FLUSH
+ if (no_flush)
+ dm_task_no_flush(dmt); /* for DM_DEVICE_SUSPEND/RESUME */
+#endif
+#ifdef LIBDM_API_DEFERRED
+ if (do_deferred(deferred_remove))
+ dm_task_deferred_remove(dmt);
+#endif
+ if (udev_wait_flag &&
+ !dm_task_set_cookie(dmt, &cookie,
+ DM_UDEV_DISABLE_LIBRARY_FALLBACK | udev_flags))
+ goto out;
r = dm_task_run (dmt);
- out:
+ if (udev_wait_flag)
+ dm_udev_wait(cookie);
+out:
dm_task_destroy (dmt);
return r;
}
-extern int
-dm_addmap (int task, const char *name, const char *target,
- const char *params, unsigned long long size, const char *uuid) {
+int dm_simplecmd_flush (int task, const char *name, uint16_t udev_flags)
+{
+ return dm_simplecmd(task, name, 0, 1, udev_flags, 0);
+}
+
+int dm_simplecmd_noflush (int task, const char *name, uint16_t udev_flags)
+{
+ return dm_simplecmd(task, name, 1, 1, udev_flags, 0);
+}
+
+static int
+dm_device_remove (const char *name, int needsync, int deferred_remove) {
+ return dm_simplecmd(DM_DEVICE_REMOVE, name, 0, needsync, 0,
+ deferred_remove);
+}
+
+static int
+dm_addmap (int task, const char *target, struct multipath *mpp,
+ char * params, int ro, uint16_t udev_flags) {
int r = 0;
struct dm_task *dmt;
+ char *prefixed_uuid = NULL;
+ uint32_t cookie = 0;
- if (!(dmt = dm_task_create (task)))
+ /* Need to add this here to allow 0 to be passed in udev_flags */
+ udev_flags |= DM_UDEV_DISABLE_LIBRARY_FALLBACK;
+
+ if (!(dmt = libmp_dm_task_create (task)))
return 0;
- if (!dm_task_set_name (dmt, name))
+ if (!dm_task_set_name (dmt, mpp->alias))
goto addout;
- if (!dm_task_add_target (dmt, 0, size, target, params))
+ if (!dm_task_add_target (dmt, 0, mpp->size, target, params))
goto addout;
- if (uuid && !dm_task_set_uuid(dmt, uuid))
- goto addout;
+ if (ro)
+ dm_task_set_ro(dmt);
+
+ if (task == DM_DEVICE_CREATE) {
+ if (strlen(mpp->wwid) > 0) {
+ prefixed_uuid = MALLOC(UUID_PREFIX_LEN +
+ strlen(mpp->wwid) + 1);
+ if (!prefixed_uuid) {
+ condlog(0, "cannot create prefixed uuid : %s",
+ strerror(errno));
+ goto addout;
+ }
+ sprintf(prefixed_uuid, UUID_PREFIX "%s", mpp->wwid);
+ if (!dm_task_set_uuid(dmt, prefixed_uuid))
+ goto freeout;
+ }
+ dm_task_skip_lockfs(dmt);
+#ifdef LIBDM_API_FLUSH
+ dm_task_no_flush(dmt);
+#endif
+ }
+
+ if (mpp->attribute_flags & (1 << ATTR_MODE) &&
+ !dm_task_set_mode(dmt, mpp->mode))
+ goto freeout;
+ if (mpp->attribute_flags & (1 << ATTR_UID) &&
+ !dm_task_set_uid(dmt, mpp->uid))
+ goto freeout;
+ if (mpp->attribute_flags & (1 << ATTR_GID) &&
+ !dm_task_set_gid(dmt, mpp->gid))
+ goto freeout;
+ condlog(4, "%s: %s [0 %llu %s %s]", mpp->alias,
+ task == DM_DEVICE_RELOAD ? "reload" : "addmap", mpp->size,
+ target, params);
dm_task_no_open_count(dmt);
+ if (task == DM_DEVICE_CREATE &&
+ !dm_task_set_cookie(dmt, &cookie, udev_flags))
+ goto freeout;
+
r = dm_task_run (dmt);
- addout:
+ if (task == DM_DEVICE_CREATE)
+ dm_udev_wait(cookie);
+freeout:
+ if (prefixed_uuid)
+ FREE(prefixed_uuid);
+
+addout:
dm_task_destroy (dmt);
+
return r;
}
-extern int
-dm_map_present (char * str)
+static uint16_t build_udev_flags(const struct multipath *mpp, int reload)
+{
+ /* DM_UDEV_DISABLE_LIBRARY_FALLBACK is added in dm_addmap */
+ return (mpp->skip_kpartx == SKIP_KPARTX_ON ?
+ MPATH_UDEV_NO_KPARTX_FLAG : 0) |
+ ((mpp->nr_active == 0 || mpp->ghost_delay_tick > 0)?
+ MPATH_UDEV_NO_PATHS_FLAG : 0) |
+ (reload && !mpp->force_udev_reload ?
+ MPATH_UDEV_RELOAD_FLAG : 0);
+}
+
+int dm_addmap_create (struct multipath *mpp, char * params)
+{
+ int ro;
+ uint16_t udev_flags = build_udev_flags(mpp, 0);
+
+ for (ro = 0; ro <= 1; ro++) {
+ int err;
+
+ if (dm_addmap(DM_DEVICE_CREATE, TGT_MPATH, mpp, params, ro,
+ udev_flags))
+ return 1;
+ /*
+ * DM_DEVICE_CREATE is actually DM_DEV_CREATE + DM_TABLE_LOAD.
+ * Failing the second part leaves an empty map. Clean it up.
+ */
+ err = errno;
+ if (dm_map_present(mpp->alias)) {
+ condlog(3, "%s: failed to load map (a path might be in use)", mpp->alias);
+ dm_flush_map_nosync(mpp->alias);
+ }
+ if (err != EROFS) {
+ condlog(3, "%s: failed to load map, error %d",
+ mpp->alias, err);
+ break;
+ }
+ }
+ return 0;
+}
+
+#define ADDMAP_RW 0
+#define ADDMAP_RO 1
+
+int dm_addmap_reload(struct multipath *mpp, char *params, int flush)
{
int r = 0;
+ uint16_t udev_flags = build_udev_flags(mpp, 1);
+
+ /*
+ * DM_DEVICE_RELOAD cannot wait on a cookie, as
+ * the cookie will only ever be released after an
+ * DM_DEVICE_RESUME. So call DM_DEVICE_RESUME
+ * after each successful call to DM_DEVICE_RELOAD.
+ */
+ if (!mpp->force_readonly)
+ r = dm_addmap(DM_DEVICE_RELOAD, TGT_MPATH, mpp, params,
+ ADDMAP_RW, 0);
+ if (!r) {
+ if (!mpp->force_readonly && errno != EROFS)
+ return 0;
+ r = dm_addmap(DM_DEVICE_RELOAD, TGT_MPATH, mpp,
+ params, ADDMAP_RO, 0);
+ }
+ if (r)
+ r = dm_simplecmd(DM_DEVICE_RESUME, mpp->alias, !flush,
+ 1, udev_flags, 0);
+ if (r)
+ return r;
+
+ /* If the resume failed, dm will leave the device suspended, and
+ * drop the new table, so doing a second resume will try using
+ * the original table */
+ if (dm_is_suspended(mpp->alias))
+ dm_simplecmd(DM_DEVICE_RESUME, mpp->alias, !flush, 1,
+ udev_flags, 0);
+ return 0;
+}
+
+static int
+do_get_info(const char *name, struct dm_info *info)
+{
+ int r = -1;
struct dm_task *dmt;
- struct dm_info info;
- if (!(dmt = dm_task_create(DM_DEVICE_INFO)))
- return 0;
+ if (!(dmt = libmp_dm_task_create(DM_DEVICE_INFO)))
+ return r;
- if (!dm_task_set_name(dmt, str))
+ if (!dm_task_set_name(dmt, name))
goto out;
dm_task_no_open_count(dmt);
if (!dm_task_run(dmt))
goto out;
- if (!dm_task_get_info(dmt, &info))
+ if (!dm_task_get_info(dmt, info))
goto out;
- if (info.exists)
- r = 1;
+ if (!info->exists)
+ goto out;
+
+ r = 0;
out:
dm_task_destroy(dmt);
return r;
}
-extern int
-dm_get_map(char * name, unsigned long long * size, char * outparams)
+int dm_map_present(const char * str)
+{
+ struct dm_info info;
+
+ return (do_get_info(str, &info) == 0);
+}
+
+int dm_get_map(const char *name, unsigned long long *size, char *outparams)
{
int r = 1;
struct dm_task *dmt;
- void *next = NULL;
uint64_t start, length;
char *target_type = NULL;
char *params = NULL;
- if (!(dmt = dm_task_create(DM_DEVICE_TABLE)))
+ if (!(dmt = libmp_dm_task_create(DM_DEVICE_TABLE)))
return 1;
if (!dm_task_set_name(dmt, name))
goto out;
/* Fetch 1st target */
- next = dm_get_next_target(dmt, next, &start, &length,
- &target_type, ¶ms);
+ dm_get_next_target(dmt, NULL, &start, &length,
+ &target_type, ¶ms);
if (size)
*size = length;
+ if (!outparams) {
+ r = 0;
+ goto out;
+ }
if (snprintf(outparams, PARAMS_SIZE, "%s", params) <= PARAMS_SIZE)
r = 0;
out:
return r;
}
-extern int
-dm_get_uuid(char *name, char *uuid)
+static int
+dm_get_prefixed_uuid(const char *name, char *uuid)
{
struct dm_task *dmt;
const char *uuidtmp;
+ int r = 1;
- dmt = dm_task_create(DM_DEVICE_INFO);
+ dmt = libmp_dm_task_create(DM_DEVICE_INFO);
if (!dmt)
return 1;
- if (!dm_task_set_name (dmt, name))
- goto uuidout;
+ if (!dm_task_set_name (dmt, name))
+ goto uuidout;
if (!dm_task_run(dmt))
- goto uuidout;
+ goto uuidout;
uuidtmp = dm_task_get_uuid(dmt);
if (uuidtmp)
else
uuid[0] = '\0';
+ r = 0;
uuidout:
dm_task_destroy(dmt);
+ return r;
+}
+
+int dm_get_uuid(const char *name, char *uuid)
+{
+ if (dm_get_prefixed_uuid(name, uuid))
+ return 1;
+
+ if (!strncmp(uuid, UUID_PREFIX, UUID_PREFIX_LEN))
+ memmove(uuid, uuid + UUID_PREFIX_LEN,
+ strlen(uuid + UUID_PREFIX_LEN) + 1);
+ return 0;
+}
+
+static int
+is_mpath_part(const char *part_name, const char *map_name)
+{
+ char *p;
+ char part_uuid[WWID_SIZE], map_uuid[WWID_SIZE];
+
+ if (dm_get_prefixed_uuid(part_name, part_uuid))
+ return 0;
+
+ if (dm_get_prefixed_uuid(map_name, map_uuid))
+ return 0;
+
+ if (strncmp(part_uuid, "part", 4) != 0)
+ return 0;
+
+ p = strstr(part_uuid, UUID_PREFIX);
+ if (p && !strcmp(p, map_uuid))
+ return 1;
return 0;
}
-extern int
-dm_get_status(char * name, char * outstatus)
+int dm_get_status(const char *name, char *outstatus)
{
int r = 1;
struct dm_task *dmt;
- void *next = NULL;
uint64_t start, length;
- char *target_type;
- char *status;
+ char *target_type = NULL;
+ char *status = NULL;
- if (!(dmt = dm_task_create(DM_DEVICE_STATUS)))
+ if (!(dmt = libmp_dm_task_create(DM_DEVICE_STATUS)))
return 1;
if (!dm_task_set_name(dmt, name))
goto out;
/* Fetch 1st target */
- next = dm_get_next_target(dmt, next, &start, &length,
- &target_type, &status);
+ dm_get_next_target(dmt, NULL, &start, &length,
+ &target_type, &status);
+ if (!status) {
+ condlog(2, "get null status.");
+ goto out;
+ }
if (snprintf(outstatus, PARAMS_SIZE, "%s", status) <= PARAMS_SIZE)
r = 0;
* returns:
* 1 : match
* 0 : no match
- * -1 : empty map
+ * -1 : empty map, or more than 1 target
*/
-extern int
-dm_type(char * name, char * type)
+int dm_type(const char *name, char *type)
{
int r = 0;
struct dm_task *dmt;
- void *next = NULL;
uint64_t start, length;
char *target_type = NULL;
char *params;
- if (!(dmt = dm_task_create(DM_DEVICE_TABLE)))
+ if (!(dmt = libmp_dm_task_create(DM_DEVICE_TABLE)))
return 0;
if (!dm_task_set_name(dmt, name))
goto out;
/* Fetch 1st target */
- next = dm_get_next_target(dmt, next, &start, &length,
- &target_type, ¶ms);
-
- if (!target_type)
+ if (dm_get_next_target(dmt, NULL, &start, &length,
+ &target_type, ¶ms) != NULL)
+ /* multiple targets */
+ r = -1;
+ else if (!target_type)
r = -1;
else if (!strcmp(target_type, type))
r = 1;
return r;
}
-static int
-dm_dev_t (char * mapname, char * dev_t, int len)
+int dm_is_mpath(const char *name)
{
- int r = 1;
+ int r = 0;
struct dm_task *dmt;
struct dm_info info;
+ uint64_t start, length;
+ char *target_type = NULL;
+ char *params;
+ const char *uuid;
- if (!(dmt = dm_task_create(DM_DEVICE_INFO)))
+ if (!(dmt = libmp_dm_task_create(DM_DEVICE_TABLE)))
return 0;
- if (!dm_task_set_name(dmt, mapname))
+ if (!dm_task_set_name(dmt, name))
goto out;
+ dm_task_no_open_count(dmt);
+
if (!dm_task_run(dmt))
goto out;
- if (!dm_task_get_info(dmt, &info))
+ if (!dm_task_get_info(dmt, &info) || !info.exists)
goto out;
- r = info.open_count;
- if (snprintf(dev_t, len, "%i:%i", info.major, info.minor) > len)
- goto out;
+ uuid = dm_task_get_uuid(dmt);
- r = 0;
+ if (!uuid || strncmp(uuid, UUID_PREFIX, UUID_PREFIX_LEN) != 0)
+ goto out;
+
+ /* Fetch 1st target */
+ dm_get_next_target(dmt, NULL, &start, &length, &target_type, ¶ms);
+
+ if (!target_type || strcmp(target_type, TGT_MPATH) != 0)
+ goto out;
+
+ r = 1;
out:
dm_task_destroy(dmt);
return r;
}
-
+
+static int
+dm_dev_t (const char * mapname, char * dev_t, int len)
+{
+ struct dm_info info;
+
+ if (do_get_info(mapname, &info) != 0)
+ return 1;
+
+ if (snprintf(dev_t, len, "%i:%i", info.major, info.minor) > len)
+ return 1;
+
+ return 0;
+}
+
int
-dm_get_opencount (char * mapname)
+dm_get_opencount (const char * mapname)
{
int r = -1;
struct dm_task *dmt;
struct dm_info info;
- if (!(dmt = dm_task_create(DM_DEVICE_INFO)))
+ if (!(dmt = libmp_dm_task_create(DM_DEVICE_INFO)))
return 0;
if (!dm_task_set_name(dmt, mapname))
if (!dm_task_get_info(dmt, &info))
goto out;
+ if (!info.exists)
+ goto out;
+
r = info.open_count;
out:
dm_task_destroy(dmt);
return r;
}
-
+
int
-dm_get_minor (char * mapname)
+dm_get_major_minor(const char *name, int *major, int *minor)
{
- int r = -1;
- struct dm_task *dmt;
struct dm_info info;
- if (!(dmt = dm_task_create(DM_DEVICE_INFO)))
- return 0;
-
- if (!dm_task_set_name(dmt, mapname))
- goto out;
+ if (do_get_info(name, &info) != 0)
+ return -1;
- if (!dm_task_run(dmt))
- goto out;
+ *major = info.major;
+ *minor = info.minor;
+ return 0;
+}
- if (!dm_task_get_info(dmt, &info))
- goto out;
+static int
+has_partmap(const char *name, void *data)
+{
+ return 1;
+}
- r = info.minor;
-out:
- dm_task_destroy(dmt);
- return r;
+static int
+partmap_in_use(const char *name, void *data)
+{
+ int part_count, *ret_count = (int *)data;
+ int open_count = dm_get_opencount(name);
+
+ if (ret_count)
+ (*ret_count)++;
+ part_count = 0;
+ if (open_count) {
+ if (do_foreach_partmaps(name, partmap_in_use, &part_count))
+ return 1;
+ if (open_count != part_count) {
+ condlog(2, "%s: map in use", name);
+ return 1;
+ }
+ }
+ return 0;
}
-
-extern int
-dm_flush_map (char * mapname, char * type)
+
+int _dm_flush_map (const char * mapname, int need_sync, int deferred_remove,
+ int need_suspend, int retries)
{
int r;
+ int queue_if_no_path = 0;
+ int udev_flags = 0;
+ unsigned long long mapsize;
+ char params[PARAMS_SIZE] = {0};
+
+ if (!dm_is_mpath(mapname))
+ return 0; /* nothing to do */
+
+ /* if the device currently has no partitions, do not
+ run kpartx on it if you fail to delete it */
+ if (do_foreach_partmaps(mapname, has_partmap, NULL) == 0)
+ udev_flags |= MPATH_UDEV_NO_KPARTX_FLAG;
+
+ /* If you aren't doing a deferred remove, make sure that no
+ * devices are in use */
+ if (!do_deferred(deferred_remove) && partmap_in_use(mapname, NULL))
+ return 1;
+
+ if (need_suspend &&
+ !dm_get_map(mapname, &mapsize, params) &&
+ strstr(params, "queue_if_no_path")) {
+ if (!dm_queue_if_no_path(mapname, 0))
+ queue_if_no_path = 1;
+ else
+ /* Leave queue_if_no_path alone if unset failed */
+ queue_if_no_path = -1;
+ }
- if (!dm_map_present(mapname))
- return 0;
-
- if (!dm_type(mapname, type))
+ if (dm_remove_partmaps(mapname, need_sync, deferred_remove))
return 1;
- if (dm_remove_partmaps(mapname))
+ if (!do_deferred(deferred_remove) && dm_get_opencount(mapname)) {
+ condlog(2, "%s: map in use", mapname);
return 1;
+ }
- if (dm_get_opencount(mapname))
- return 1;
+ do {
+ if (need_suspend && queue_if_no_path != -1)
+ dm_simplecmd_flush(DM_DEVICE_SUSPEND, mapname, 0);
+
+ r = dm_device_remove(mapname, need_sync, deferred_remove);
+
+ if (r) {
+ if (do_deferred(deferred_remove)
+ && dm_map_present(mapname)) {
+ condlog(4, "multipath map %s remove deferred",
+ mapname);
+ return 2;
+ }
+ condlog(4, "multipath map %s removed", mapname);
+ return 0;
+ } else {
+ condlog(2, "failed to remove multipath map %s",
+ mapname);
+ if (need_suspend && queue_if_no_path != -1) {
+ dm_simplecmd_noflush(DM_DEVICE_RESUME,
+ mapname, udev_flags);
+ }
+ }
+ if (retries)
+ sleep(1);
+ } while (retries-- > 0);
- r = dm_simplecmd(DM_DEVICE_REMOVE, mapname);
+ if (queue_if_no_path == 1)
+ dm_queue_if_no_path(mapname, 1);
- if (r) {
- condlog(4, "multipath map %s removed", mapname);
- return 0;
- }
return 1;
}
-extern int
-dm_flush_maps (char * type)
-{
- int r = 0;
- struct dm_task *dmt;
- struct dm_names *names;
- unsigned next = 0;
+#ifdef LIBDM_API_DEFERRED
- if (!(dmt = dm_task_create (DM_DEVICE_LIST)))
- return 0;
+int
+dm_flush_map_nopaths(const char * mapname, int deferred_remove)
+{
+ return _dm_flush_map(mapname, 1, deferred_remove, 0, 0);
+}
- dm_task_no_open_count(dmt);
+#else
- if (!dm_task_run (dmt))
+int
+dm_flush_map_nopaths(const char * mapname, int deferred_remove)
+{
+ return _dm_flush_map(mapname, 1, 0, 0, 0);
+}
+
+#endif
+
+int dm_flush_maps (int retries)
+{
+ int r = 0;
+ struct dm_task *dmt;
+ struct dm_names *names;
+ unsigned next = 0;
+
+ if (!(dmt = libmp_dm_task_create (DM_DEVICE_LIST)))
+ return 0;
+
+ dm_task_no_open_count(dmt);
+
+ if (!dm_task_run (dmt))
goto out;
if (!(names = dm_task_get_names (dmt)))
goto out;
do {
- r += dm_flush_map(names->name, type);
+ r |= dm_suspend_and_flush_map(names->name, retries);
next = names->next;
names = (void *) names + next;
} while (next);
- out:
+out:
dm_task_destroy (dmt);
return r;
}
int
-dm_fail_path(char * mapname, char * path)
+dm_message(const char * mapname, char * message)
{
int r = 1;
struct dm_task *dmt;
- char str[32];
- if (!(dmt = dm_task_create(DM_DEVICE_TARGET_MSG)))
+ if (!(dmt = libmp_dm_task_create(DM_DEVICE_TARGET_MSG)))
return 1;
if (!dm_task_set_name(dmt, mapname))
if (!dm_task_set_sector(dmt, 0))
goto out;
- if (snprintf(str, 32, "fail_path %s\n", path) > 32)
- goto out;
-
- if (!dm_task_set_message(dmt, str))
+ if (!dm_task_set_message(dmt, message))
goto out;
dm_task_no_open_count(dmt);
r = 0;
out:
+ if (r)
+ condlog(0, "DM message failed [%s]", message);
+
dm_task_destroy(dmt);
return r;
}
int
-dm_reinstate(char * mapname, char * path)
+dm_fail_path(const char * mapname, char * path)
{
- int r = 1;
- struct dm_task *dmt;
- char str[32];
+ char message[32];
- if (!(dmt = dm_task_create(DM_DEVICE_TARGET_MSG)))
+ if (snprintf(message, 32, "fail_path %s", path) > 32)
return 1;
- if (!dm_task_set_name(dmt, mapname))
- goto out;
-
- if (!dm_task_set_sector(dmt, 0))
- goto out;
-
- if (snprintf(str, 32, "reinstate_path %s\n", path) > 32)
- goto out;
-
- if (!dm_task_set_message(dmt, str))
- goto out;
+ return dm_message(mapname, message);
+}
- dm_task_no_open_count(dmt);
+int
+dm_reinstate_path(const char * mapname, char * path)
+{
+ char message[32];
- if (!dm_task_run(dmt))
- goto out;
+ if (snprintf(message, 32, "reinstate_path %s", path) > 32)
+ return 1;
- r = 0;
-out:
- dm_task_destroy(dmt);
- return r;
+ return dm_message(mapname, message);
}
int
-dm_queue_if_no_path(char *mapname, int enable)
+dm_queue_if_no_path(const char *mapname, int enable)
{
- int r = 1;
- struct dm_task *dmt;
- char *str;
+ char *message;
if (enable)
- str = "queue_if_no_path\n";
+ message = "queue_if_no_path";
else
- str = "fail_if_no_path\n";
-
- if (!(dmt = dm_task_create(DM_DEVICE_TARGET_MSG)))
- return 1;
-
- if (!dm_task_set_name(dmt, mapname))
- goto out;
-
- if (!dm_task_set_sector(dmt, 0))
- goto out;
-
- if (!dm_task_set_message(dmt, str))
- goto out;
-
- dm_task_no_open_count(dmt);
-
- if (!dm_task_run(dmt))
- goto out;
+ message = "fail_if_no_path";
- r = 0;
-out:
- dm_task_destroy(dmt);
- return r;
+ return dm_message(mapname, message);
}
static int
-dm_groupmsg (char * msg, char * mapname, int index)
+dm_groupmsg (const char * msg, const char * mapname, int index)
{
- int r = 0;
- struct dm_task *dmt;
- char str[24];
-
- if (!(dmt = dm_task_create(DM_DEVICE_TARGET_MSG)))
- return 0;
-
- if (!dm_task_set_name(dmt, mapname))
- goto out;
-
- if (!dm_task_set_sector(dmt, 0))
- goto out;
-
- snprintf(str, 24, "%s_group %i\n", msg, index);
-
- if (!dm_task_set_message(dmt, str))
- goto out;
-
- dm_task_no_open_count(dmt);
-
- if (!dm_task_run(dmt))
- goto out;
-
- condlog(3, "message %s 0 %s", mapname, str);
- r = 1;
-
- out:
- if (!r)
- condlog(3, "message %s 0 %s failed", mapname, str);
+ char message[32];
- dm_task_destroy(dmt);
+ if (snprintf(message, 32, "%s_group %i", msg, index) > 32)
+ return 1;
- return r;
+ return dm_message(mapname, message);
}
int
-dm_switchgroup(char * mapname, int index)
+dm_switchgroup(const char * mapname, int index)
{
- return dm_groupmsg("switch", mapname,index);
+ return dm_groupmsg("switch", mapname, index);
}
int
-dm_enablegroup(char * mapname, int index)
+dm_enablegroup(const char * mapname, int index)
{
- return dm_groupmsg("enable", mapname,index);
+ return dm_groupmsg("enable", mapname, index);
}
int
-dm_disablegroup(char * mapname, int index)
+dm_disablegroup(const char * mapname, int index)
{
- return dm_groupmsg("disable", mapname,index);
+ return dm_groupmsg("disable", mapname, index);
+}
+
+struct multipath *dm_get_multipath(const char *name)
+{
+ struct multipath *mpp = NULL;
+
+ mpp = alloc_multipath();
+ if (!mpp)
+ return NULL;
+
+ mpp->alias = STRDUP(name);
+
+ if (!mpp->alias)
+ goto out;
+
+ if (dm_get_map(name, &mpp->size, NULL))
+ goto out;
+
+ dm_get_uuid(name, mpp->wwid);
+ dm_get_info(name, &mpp->dmi);
+
+ return mpp;
+out:
+ free_multipath(mpp, KEEP_PATHS);
+ return NULL;
}
int
-dm_get_maps (vector mp, char * type)
+dm_get_maps (vector mp)
{
struct multipath * mpp;
int r = 1;
- int info;
struct dm_task *dmt;
struct dm_names *names;
unsigned next = 0;
- if (!type || !mp)
+ if (!mp)
return 1;
- if (!(dmt = dm_task_create(DM_DEVICE_LIST)))
+ if (!(dmt = libmp_dm_task_create(DM_DEVICE_LIST)))
return 1;
dm_task_no_open_count(dmt);
}
do {
- info = dm_type(names->name, type);
-
- if (!info)
+ if (!dm_is_mpath(names->name))
goto next;
- mpp = alloc_multipath();
-
+ mpp = dm_get_multipath(names->name);
if (!mpp)
goto out;
- mpp->alias = STRDUP(names->name);
-
- if (!mpp->alias)
- goto out1;
-
- if (info > 0) {
- if (dm_get_map(names->name, &mpp->size, mpp->params))
- goto out1;
-
- if (dm_get_status(names->name, mpp->status))
- goto out1;
-
- dm_get_uuid(names->name, mpp->wwid);
- }
-
if (!vector_alloc_slot(mp))
- goto out1;
+ goto out;
vector_set_slot(mp, mpp);
mpp = NULL;
next:
- next = names->next;
- names = (void *) names + next;
+ next = names->next;
+ names = (void *) names + next;
} while (next);
r = 0;
goto out;
-out1:
- free_multipath(mpp, KEEP_PATHS);
out:
dm_task_destroy (dmt);
return r;
}
int
-dm_geteventnr (char *name)
+dm_geteventnr (const char *name)
{
- struct dm_task *dmt;
struct dm_info info;
- if (!(dmt = dm_task_create(DM_DEVICE_INFO)))
- return 0;
+ if (do_get_info(name, &info) != 0)
+ return -1;
- if (!dm_task_set_name(dmt, name))
- goto out;
-
- dm_task_no_open_count(dmt);
-
- if (!dm_task_run(dmt))
- goto out;
-
- if (!dm_task_get_info(dmt, &info)) {
- info.event_nr = 0;
- goto out;
- }
+ return info.event_nr;
+}
- if (!info.exists) {
- info.event_nr = 0;
- goto out;
- }
+int
+dm_is_suspended(const char *name)
+{
+ struct dm_info info;
-out:
- dm_task_destroy(dmt);
+ if (do_get_info(name, &info) != 0)
+ return -1;
- return info.event_nr;
+ return info.suspended;
}
char *
dm_mapname(int major, int minor)
{
- char * response;
+ char * response = NULL;
+ const char *map;
struct dm_task *dmt;
int r;
int loop = MAX_WAIT * LOOPS_PER_SEC;
- if (!(dmt = dm_task_create(DM_DEVICE_STATUS)))
+ if (!(dmt = libmp_dm_task_create(DM_DEVICE_STATUS)))
return NULL;
if (!dm_task_set_major(dmt, major) ||
* daemon uev_trigger -> uev_add_map
*/
while (--loop) {
- dm_shut_log();
r = dm_task_run(dmt);
- dm_restore_log();
if (r)
break;
goto bad;
}
- response = STRDUP((char *)dm_task_get_name(dmt));
+ map = dm_task_get_name(dmt);
+ if (map && strlen(map))
+ response = STRDUP((const char *)dm_task_get_name(dmt));
+
dm_task_destroy(dmt);
return response;
bad:
return NULL;
}
-int
-dm_remove_partmaps (char * mapname)
+static int
+do_foreach_partmaps (const char * mapname,
+ int (*partmap_func)(const char *, void *),
+ void *data)
{
struct dm_task *dmt;
struct dm_names *names;
unsigned long long size;
char dev_t[32];
int r = 1;
+ char *p;
- if (!(dmt = dm_task_create(DM_DEVICE_LIST)))
+ if (!(dmt = libmp_dm_task_create(DM_DEVICE_LIST)))
return 1;
dm_task_no_open_count(dmt);
do {
if (
/*
- * if devmap target is "linear"
- */
- dm_type(names->name, "linear") &&
-
- /*
- * and the multipath mapname and the part mapname start
- * the same
+ * if there is only a single "linear" target
*/
- !strncmp(names->name, mapname, strlen(mapname)) &&
+ (dm_type(names->name, TGT_PART) == 1) &&
/*
- * and the opencount is 0 for us to allow removal
+ * and the uuid of the target is a partition of the
+ * uuid of the multipath device
*/
- !dm_get_opencount(names->name) &&
+ is_mpath_part(names->name, mapname) &&
/*
* and we can fetch the map table from the kernel
/*
* and the table maps over the multipath map
*/
- strstr(params, dev_t)
+ (p = strstr(params, dev_t)) &&
+ !isdigit(*(p + strlen(dev_t)))
) {
- /*
- * then it's a kpartx generated partition.
- * remove it.
- */
- condlog(4, "partition map %s removed",
- names->name);
- dm_simplecmd(DM_DEVICE_REMOVE, names->name);
- }
+ if (partmap_func(names->name, data) != 0)
+ goto out;
+ }
next = names->next;
names = (void *) names + next;
return r;
}
-#if 0
+struct remove_data {
+ int need_sync;
+ int deferred_remove;
+};
+
+static int
+remove_partmap(const char *name, void *data)
+{
+ struct remove_data *rd = (struct remove_data *)data;
+
+ if (dm_get_opencount(name)) {
+ dm_remove_partmaps(name, rd->need_sync, rd->deferred_remove);
+ if (!do_deferred(rd->deferred_remove) &&
+ dm_get_opencount(name)) {
+ condlog(2, "%s: map in use", name);
+ return 1;
+ }
+ }
+ condlog(4, "partition map %s removed", name);
+ dm_device_remove(name, rd->need_sync, rd->deferred_remove);
+ return 0;
+}
+
int
-dm_rename (char * old, char * new)
+dm_remove_partmaps (const char * mapname, int need_sync, int deferred_remove)
{
- int r = 1;
- struct dm_task *dmt;
+ struct remove_data rd = { need_sync, deferred_remove };
+ return do_foreach_partmaps(mapname, remove_partmap, &rd);
+}
+
+#ifdef LIBDM_API_DEFERRED
+
+static int
+cancel_remove_partmap (const char *name, void *unused)
+{
+ if (dm_get_opencount(name))
+ dm_cancel_remove_partmaps(name);
+ if (dm_message(name, "@cancel_deferred_remove") != 0)
+ condlog(0, "%s: can't cancel deferred remove: %s", name,
+ strerror(errno));
+ return 0;
+}
- if (!(dmt = dm_task_create(DM_DEVICE_RENAME)))
+static int
+dm_get_deferred_remove (const char * mapname)
+{
+ struct dm_info info;
+
+ if (do_get_info(mapname, &info) != 0)
+ return -1;
+
+ return info.deferred_remove;
+}
+
+static int
+dm_cancel_remove_partmaps(const char * mapname) {
+ return do_foreach_partmaps(mapname, cancel_remove_partmap, NULL);
+}
+
+int
+dm_cancel_deferred_remove (struct multipath *mpp)
+{
+ int r = 0;
+
+ if (!dm_get_deferred_remove(mpp->alias))
return 0;
+ if (mpp->deferred_remove == DEFERRED_REMOVE_IN_PROGRESS)
+ mpp->deferred_remove = DEFERRED_REMOVE_ON;
+
+ dm_cancel_remove_partmaps(mpp->alias);
+ r = dm_message(mpp->alias, "@cancel_deferred_remove");
+ if (r)
+ condlog(0, "%s: can't cancel deferred remove: %s", mpp->alias,
+ strerror(errno));
+ else
+ condlog(2, "%s: canceled deferred remove", mpp->alias);
+ return r;
+}
+
+#else
+
+int
+dm_cancel_deferred_remove (struct multipath *mpp)
+{
+ return 0;
+}
+
+#endif
+
+static struct dm_info *
+alloc_dminfo (void)
+{
+ return MALLOC(sizeof(struct dm_info));
+}
+
+int
+dm_get_info (const char * mapname, struct dm_info ** dmi)
+{
+ if (!mapname)
+ return 1;
+
+ if (!*dmi)
+ *dmi = alloc_dminfo();
+
+ if (!*dmi)
+ return 1;
+
+ if (do_get_info(mapname, *dmi) != 0) {
+ memset(*dmi, 0, sizeof(struct dm_info));
+ FREE(*dmi);
+ *dmi = NULL;
+ return 1;
+ }
+ return 0;
+}
+
+struct rename_data {
+ const char *old;
+ char *new;
+ char *delim;
+};
+
+static int
+rename_partmap (const char *name, void *data)
+{
+ char buff[PARAMS_SIZE];
+ int offset;
+ struct rename_data *rd = (struct rename_data *)data;
+
+ if (strncmp(name, rd->old, strlen(rd->old)) != 0)
+ return 0;
+ for (offset = strlen(rd->old); name[offset] && !(isdigit(name[offset])); offset++); /* do nothing */
+ snprintf(buff, PARAMS_SIZE, "%s%s%s", rd->new, rd->delim,
+ name + offset);
+ dm_rename(name, buff, rd->delim, SKIP_KPARTX_OFF);
+ condlog(4, "partition map %s renamed", name);
+ return 0;
+}
+
+int
+dm_rename_partmaps (const char * old, char * new, char *delim)
+{
+ struct rename_data rd;
+
+ rd.old = old;
+ rd.new = new;
+
+ if (delim)
+ rd.delim = delim;
+ else {
+ if (isdigit(new[strlen(new)-1]))
+ rd.delim = "p";
+ else
+ rd.delim = "";
+ }
+ return do_foreach_partmaps(old, rename_partmap, &rd);
+}
+
+int
+dm_rename (const char * old, char * new, char *delim, int skip_kpartx)
+{
+ int r = 0;
+ struct dm_task *dmt;
+ uint32_t cookie = 0;
+ uint16_t udev_flags = DM_UDEV_DISABLE_LIBRARY_FALLBACK | ((skip_kpartx == SKIP_KPARTX_ON)? MPATH_UDEV_NO_KPARTX_FLAG : 0);
+
+ if (dm_rename_partmaps(old, new, delim))
+ return r;
+
+ if (!(dmt = libmp_dm_task_create(DM_DEVICE_RENAME)))
+ return r;
if (!dm_task_set_name(dmt, old))
goto out;
if (!dm_task_set_newname(dmt, new))
goto out;
-
+
+ dm_task_no_open_count(dmt);
+
+ if (!dm_task_set_cookie(dmt, &cookie, udev_flags))
+ goto out;
+ r = dm_task_run(dmt);
+
+ dm_udev_wait(cookie);
+
+out:
+ dm_task_destroy(dmt);
+
+ return r;
+}
+
+void dm_reassign_deps(char *table, const char *dep, const char *newdep)
+{
+ char *n;
+ const char *p, *newtable;
+
+ newtable = strdup(table);
+ if (!newtable)
+ return;
+ p = strstr(newtable, dep);
+ n = table + (p - newtable);
+ strcpy(n, newdep);
+ n += strlen(newdep);
+ p += strlen(dep);
+ strcat(n, p);
+ FREE_CONST(newtable);
+}
+
+int dm_reassign_table(const char *name, char *old, char *new)
+{
+ int r = 0, modified = 0;
+ uint64_t start, length;
+ struct dm_task *dmt, *reload_dmt;
+ char *target, *params = NULL;
+ char *buff;
+ void *next = NULL;
+
+ if (!(dmt = libmp_dm_task_create(DM_DEVICE_TABLE)))
+ return 0;
+
+ if (!dm_task_set_name(dmt, name))
+ goto out;
+
dm_task_no_open_count(dmt);
if (!dm_task_run(dmt))
goto out;
+ if (!(reload_dmt = libmp_dm_task_create(DM_DEVICE_RELOAD)))
+ goto out;
+ if (!dm_task_set_name(reload_dmt, name))
+ goto out_reload;
- r = 0;
+ do {
+ next = dm_get_next_target(dmt, next, &start, &length,
+ &target, ¶ms);
+ buff = strdup(params);
+ if (!buff) {
+ condlog(3, "%s: failed to replace target %s, "
+ "out of memory", name, target);
+ goto out_reload;
+ }
+ if (strcmp(target, TGT_MPATH) && strstr(params, old)) {
+ condlog(3, "%s: replace target %s %s",
+ name, target, buff);
+ dm_reassign_deps(buff, old, new);
+ condlog(3, "%s: with target %s %s",
+ name, target, buff);
+ modified++;
+ }
+ dm_task_add_target(reload_dmt, start, length, target, buff);
+ free(buff);
+ } while (next);
+
+ if (modified) {
+ dm_task_no_open_count(reload_dmt);
+
+ if (!dm_task_run(reload_dmt)) {
+ condlog(3, "%s: failed to reassign targets", name);
+ goto out_reload;
+ }
+ dm_simplecmd_noflush(DM_DEVICE_RESUME, name,
+ MPATH_UDEV_RELOAD_FLAG);
+ }
+ r = 1;
+
+out_reload:
+ dm_task_destroy(reload_dmt);
out:
dm_task_destroy(dmt);
return r;
}
-#endif
+
+
+/*
+ * Reassign existing device-mapper table(s) to not use
+ * the block devices but point to the multipathed
+ * device instead
+ */
+int dm_reassign(const char *mapname)
+{
+ struct dm_deps *deps;
+ struct dm_task *dmt;
+ struct dm_info info;
+ char dev_t[32], dm_dep[32];
+ int r = 0, i;
+
+ if (dm_dev_t(mapname, &dev_t[0], 32)) {
+ condlog(3, "%s: failed to get device number", mapname);
+ return 1;
+ }
+
+ if (!(dmt = libmp_dm_task_create(DM_DEVICE_DEPS))) {
+ condlog(3, "%s: couldn't make dm task", mapname);
+ return 0;
+ }
+
+ if (!dm_task_set_name(dmt, mapname))
+ goto out;
+
+ dm_task_no_open_count(dmt);
+
+ if (!dm_task_run(dmt))
+ goto out;
+
+ if (!dm_task_get_info(dmt, &info))
+ goto out;
+
+ if (!(deps = dm_task_get_deps(dmt)))
+ goto out;
+
+ if (!info.exists)
+ goto out;
+
+ for (i = 0; i < deps->count; i++) {
+ sprintf(dm_dep, "%d:%d",
+ major(deps->device[i]),
+ minor(deps->device[i]));
+ sysfs_check_holders(dm_dep, dev_t);
+ }
+
+ r = 1;
+out:
+ dm_task_destroy (dmt);
+ return r;
+}
+
+int dm_setgeometry(struct multipath *mpp)
+{
+ struct dm_task *dmt;
+ struct path *pp;
+ char heads[4], sectors[4];
+ char cylinders[10], start[32];
+ int r = 0;
+
+ if (!mpp)
+ return 1;
+
+ pp = first_path(mpp);
+ if (!pp) {
+ condlog(3, "%s: no path for geometry", mpp->alias);
+ return 1;
+ }
+ if (pp->geom.cylinders == 0 ||
+ pp->geom.heads == 0 ||
+ pp->geom.sectors == 0) {
+ condlog(3, "%s: invalid geometry on %s", mpp->alias, pp->dev);
+ return 1;
+ }
+
+ if (!(dmt = libmp_dm_task_create(DM_DEVICE_SET_GEOMETRY)))
+ return 0;
+
+ if (!dm_task_set_name(dmt, mpp->alias))
+ goto out;
+
+ dm_task_no_open_count(dmt);
+
+ /* What a sick interface ... */
+ snprintf(heads, 4, "%u", pp->geom.heads);
+ snprintf(sectors, 4, "%u", pp->geom.sectors);
+ snprintf(cylinders, 10, "%u", pp->geom.cylinders);
+ snprintf(start, 32, "%lu", pp->geom.start);
+ if (!dm_task_set_geometry(dmt, cylinders, heads, sectors, start)) {
+ condlog(3, "%s: Failed to set geometry", mpp->alias);
+ goto out;
+ }
+
+ r = dm_task_run(dmt);
+out:
+ dm_task_destroy(dmt);
+
+ return r;
+}
projects / platform / upstream / multipath-tools.git / blobdiff