*/
#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 "checkers.h"
#include "vector.h"
#include "structs.h"
#include "debug.h"
#include "memory.h"
#include "devmapper.h"
+#include "config.h"
+
+#include "log_pthread.h"
+#include <sys/types.h>
+#include <time.h>
#define MAX_WAIT 5
#define LOOPS_PER_SEC 5
+#define UUID_PREFIX "mpath-"
+#define UUID_PREFIX_LEN 6
+
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 = (conf) ? conf->verbosity : 0;
+ if (thres <= 3 || level > thres)
+ return;
+
+ va_start(ap, f);
+ if (!logsink) {
+ 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;
}
-void
-dm_restore_log (void)
-{
- dm_log_init(NULL);
+extern void
+dm_init(void) {
+ dm_log_init(&dm_write_log);
+ dm_log_init_verbose(conf ? conf->verbosity + 3 : 0);
}
-void
-dm_shut_log (void)
+static int
+dm_libprereq (void)
{
- dm_log_init(&dm_dummy_log);
+ char version[64];
+ int v[3];
+ int minv[3] = {1, 2, 38};
+
+ dm_get_library_version(version, sizeof(version));
+ condlog(3, "libdevmapper version %s", version);
+ sscanf(version, "%d.%d.%d ", &v[0], &v[1], &v[2]);
+
+ if ((v[0] > minv[0]) ||
+ ((v[0] == minv[0]) && (v[1] > minv[1])) ||
+ ((v[0] == minv[0]) && (v[1] == minv[1]) && (v[2] >= minv[2])))
+ 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)
+static int
+dm_drvprereq (char * str)
{
int r = 2;
struct dm_task *dmt;
struct dm_versions *target;
struct dm_versions *last_target;
+ int minv[3] = {1, 0, 3};
+ unsigned int *v;
if (!(dmt = dm_task_create(DM_DEVICE_LIST_VERSIONS)))
return 3;
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)
+ if (r == 2) {
condlog(0, "DM multipath kernel driver not loaded");
- else if (r == 1)
- condlog(0, "DM multipath kernel driver version too old");
-
+ goto out;
+ }
+ v = target->version;
+ if ((v[0] > minv[0]) ||
+ ((v[0] == minv[0]) && (v[1] > minv[1])) ||
+ ((v[0] == minv[0]) && (v[1] == minv[1]) && (v[2] >= minv[2]))) {
+ r = 0;
+ goto out;
+ }
+ condlog(0, "DM multipath kernel driver must be >= %u.%.2u.%.2u",
+ minv[0], minv[1], minv[2]);
out:
dm_task_destroy(dmt);
return r;
}
extern int
-dm_simplecmd (int task, const char *name) {
+dm_prereq (void)
+{
+ if (dm_libprereq())
+ return 1;
+ return dm_drvprereq(TGT_MPATH);
+}
+
+static int
+dm_simplecmd (int task, const char *name, int no_flush, int need_sync) {
int r = 0;
+ int udev_wait_flag = (need_sync && (task == DM_DEVICE_RESUME ||
+ task == DM_DEVICE_REMOVE));
struct dm_task *dmt;
if (!(dmt = dm_task_create (task)))
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
+ if (udev_wait_flag && !dm_task_set_cookie(dmt, &conf->cookie, 0))
+ goto out;
r = dm_task_run (dmt);
out:
}
extern int
-dm_addmap (int task, const char *name, const char *target,
- const char *params, unsigned long long size, const char *uuid) {
+dm_simplecmd_flush (int task, const char *name, int needsync) {
+ return dm_simplecmd(task, name, 0, needsync);
+}
+
+extern int
+dm_simplecmd_noflush (int task, const char *name) {
+ return dm_simplecmd(task, name, 1, 1);
+}
+
+extern int
+dm_addmap (int task, const char *target, struct multipath *mpp, int use_uuid,
+ int ro) {
int r = 0;
struct dm_task *dmt;
+ char *prefixed_uuid = NULL;
if (!(dmt = 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, mpp->params))
goto addout;
- if (uuid && !dm_task_set_uuid(dmt, uuid))
- goto addout;
+ if (ro)
+ dm_task_set_ro(dmt);
+
+ if (use_uuid && mpp->wwid){
+ prefixed_uuid = MALLOC(UUID_PREFIX_LEN + strlen(mpp->wwid) + 1);
+ if (!prefixed_uuid) {
+ condlog(0, "cannot create prefixed uuid : %s\n",
+ strerror(errno));
+ goto addout;
+ }
+ sprintf(prefixed_uuid, UUID_PREFIX "%s", mpp->wwid);
+ if (!dm_task_set_uuid(dmt, prefixed_uuid))
+ goto freeout;
+ }
+
+ 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;
dm_task_no_open_count(dmt);
+ if (task == DM_DEVICE_CREATE &&
+ !dm_task_set_cookie(dmt, &conf->cookie, 0))
+ goto freeout;
r = dm_task_run (dmt);
+ freeout:
+ if (prefixed_uuid)
+ FREE(prefixed_uuid);
+
addout:
dm_task_destroy (dmt);
+
return r;
}
+static int
+_dm_addmap_create (struct multipath *mpp, int ro) {
+ int r;
+ r = dm_addmap(DM_DEVICE_CREATE, TGT_MPATH, mpp, 1, ro);
+ /*
+ * DM_DEVICE_CREATE is actually DM_DEV_CREATE + DM_TABLE_LOAD.
+ * Failing the second part leaves an empty map. Clean it up.
+ */
+ if (!r && 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);
+ }
+ return r;
+}
+
+#define ADDMAP_RW 0
+#define ADDMAP_RO 1
+
+extern int
+dm_addmap_create (struct multipath *mpp) {
+ return _dm_addmap_create(mpp, ADDMAP_RW);
+}
+
+extern int
+dm_addmap_create_ro (struct multipath *mpp) {
+ return _dm_addmap_create(mpp, ADDMAP_RO);
+}
+
+extern int
+dm_addmap_reload (struct multipath *mpp) {
+ return dm_addmap(DM_DEVICE_RELOAD, TGT_MPATH, mpp, 0, ADDMAP_RW);
+}
+
+extern int
+dm_addmap_reload_ro (struct multipath *mpp) {
+ return dm_addmap(DM_DEVICE_RELOAD, TGT_MPATH, mpp, 0, ADDMAP_RO);
+}
+
extern int
-dm_map_present (char * str)
+dm_map_present (const char * str)
{
int r = 0;
struct dm_task *dmt;
{
struct dm_task *dmt;
const char *uuidtmp;
+ int r = 1;
dmt = 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)
- strcpy(uuid, uuidtmp);
+ if (uuidtmp) {
+ if (!strncmp(uuidtmp, UUID_PREFIX, UUID_PREFIX_LEN))
+ strcpy(uuid, uuidtmp + UUID_PREFIX_LEN);
+ else
+ strcpy(uuid, uuidtmp);
+ }
else
uuid[0] = '\0';
+ r = 0;
uuidout:
dm_task_destroy(dmt);
-
- return 0;
+ return r;
}
extern int
* -1 : empty map
*/
extern int
-dm_type(char * name, char * type)
+dm_type(const char * name, char * type)
{
int r = 0;
struct dm_task *dmt;
}
static int
-dm_dev_t (char * mapname, char * dev_t, int len)
+dm_dev_t (const char * mapname, char * dev_t, int len)
{
int r = 1;
struct dm_task *dmt;
dm_task_destroy(dmt);
return r;
}
-
+
int
-dm_get_opencount (char * mapname)
+dm_get_opencount (const char * mapname)
{
int r = -1;
struct dm_task *dmt;
dm_task_destroy(dmt);
return r;
}
-
+
int
dm_get_minor (char * mapname)
{
dm_task_destroy(dmt);
return r;
}
-
+
extern int
-dm_flush_map (char * mapname, char * type)
+_dm_flush_map (const char * mapname, int need_sync)
{
int r;
if (!dm_map_present(mapname))
return 0;
- if (dm_type(mapname, type) <= 0)
- return 1;
+ if (dm_type(mapname, TGT_MPATH) <= 0)
+ return 0; /* nothing to do */
- if (dm_remove_partmaps(mapname))
+ if (dm_remove_partmaps(mapname, need_sync))
return 1;
if (dm_get_opencount(mapname)) {
condlog(2, "%s: map in use", mapname);
return 1;
- }
+ }
- r = dm_simplecmd(DM_DEVICE_REMOVE, mapname);
+ r = dm_simplecmd_flush(DM_DEVICE_REMOVE, mapname, need_sync);
if (r) {
condlog(4, "multipath map %s removed", mapname);
}
extern int
-dm_flush_maps (char * type)
+dm_flush_maps (void)
{
int r = 0;
struct dm_task *dmt;
goto out;
do {
- r += dm_flush_map(names->name, type);
+ r |= dm_flush_map(names->name);
next = names->next;
names = (void *) names + next;
} while (next);
return dm_message(mapname, message);
}
+int
+dm_set_pg_timeout(char *mapname, int timeout_val)
+{
+ char message[24];
+
+ if (snprintf(message, 24, "set_pg_timeout %d", timeout_val) >= 24)
+ return 1;
+ return dm_message(mapname, message);
+}
+
static int
dm_groupmsg (char * msg, char * mapname, int index)
{
}
int
-dm_get_maps (vector mp, char * type)
+dm_get_maps (vector mp)
{
struct multipath * mpp;
int r = 1;
struct dm_names *names;
unsigned next = 0;
- if (!type || !mp)
+ if (!mp)
return 1;
if (!(dmt = dm_task_create(DM_DEVICE_LIST)))
}
do {
- info = dm_type(names->name, type);
+ info = dm_type(names->name, TGT_MPATH);
if (info <= 0)
goto next;
goto out1;
dm_get_uuid(names->name, mpp->wwid);
+ dm_get_info(names->name, &mpp->dmi);
}
if (!vector_alloc_slot(mp))
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;
return r;
}
-extern int
-dm_get_name(char *uuid, char *type, char *name)
+extern char *
+dm_get_name(char *uuid)
{
- vector vec;
- struct multipath *mpp;
- int i;
-
- vec = vector_alloc();
+ struct dm_task *dmt;
+ struct dm_info info;
+ char *prefixed_uuid, *name = NULL;
+ const char *nametmp;
- if (!vec)
- return 0;
+ dmt = dm_task_create(DM_DEVICE_INFO);
+ if (!dmt)
+ return NULL;
- if (dm_get_maps(vec, type)) {
- vector_free(vec);
- return 0;
+ prefixed_uuid = MALLOC(UUID_PREFIX_LEN + strlen(uuid) + 1);
+ if (!prefixed_uuid) {
+ condlog(0, "cannot create prefixed uuid : %s\n",
+ strerror(errno));
+ goto freeout;
}
+ sprintf(prefixed_uuid, UUID_PREFIX "%s", uuid);
+ if (!dm_task_set_uuid(dmt, prefixed_uuid))
+ goto freeout;
- vector_foreach_slot(vec, mpp, i) {
- if (!strcmp(uuid, mpp->wwid)) {
- vector_free(vec);
- strcpy(name, mpp->alias);
- return 1;
- }
+ if (!dm_task_run(dmt))
+ goto freeout;
+
+ if (!dm_task_get_info(dmt, &info) || !info.exists)
+ goto freeout;
+
+ nametmp = dm_task_get_name(dmt);
+ if (nametmp && strlen(nametmp)) {
+ name = MALLOC(strlen(nametmp) + 1);
+ if (name)
+ strcpy(name, nametmp);
+ } else {
+ condlog(2, "%s: no device-mapper name found", uuid);
}
- vector_free(vec);
- return 0;
+freeout:
+ if (prefixed_uuid)
+ FREE(prefixed_uuid);
+ dm_task_destroy(dmt);
+
+ return name;
}
int
char *
dm_mapname(int major, int minor)
{
- char * response = NULL, *map;
+ char * response = NULL;
+ const char *map;
struct dm_task *dmt;
int r;
int loop = MAX_WAIT * LOOPS_PER_SEC;
* daemon uev_trigger -> uev_add_map
*/
while (--loop) {
- dm_shut_log();
r = dm_task_run(dmt);
- dm_restore_log();
if (r)
break;
}
int
-dm_remove_partmaps (char * mapname)
+dm_remove_partmaps (const char * mapname, int need_sync)
{
struct dm_task *dmt;
struct dm_names *names;
/*
* if devmap target is "linear"
*/
- (dm_type(names->name, "linear") > 0) &&
+ (dm_type(names->name, TGT_PART) > 0) &&
/*
* and the multipath mapname and the part mapname start
*/
strstr(params, 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);
+ dm_simplecmd_flush(DM_DEVICE_REMOVE, names->name, need_sync);
}
next = names->next;
{
int r = 1;
struct dm_task *dmt = NULL;
-
+
if (!mapname)
return 1;
r = 0;
out:
- if (r)
+ if (r) {
memset(*dmi, 0, sizeof(struct dm_info));
+ FREE(*dmi);
+ *dmi = NULL;
+ }
if (dmt)
dm_task_destroy(dmt);
}
int
+dm_rename_partmaps (char * old, char * new)
+{
+ struct dm_task *dmt;
+ struct dm_names *names;
+ unsigned next = 0;
+ char buff[PARAMS_SIZE];
+ unsigned long long size;
+ char dev_t[32];
+ int r = 1;
+
+ if (!(dmt = dm_task_create(DM_DEVICE_LIST)))
+ return 1;
+
+ dm_task_no_open_count(dmt);
+
+ if (!dm_task_run(dmt))
+ goto out;
+
+ if (!(names = dm_task_get_names(dmt)))
+ goto out;
+
+ if (!names->dev) {
+ r = 0; /* this is perfectly valid */
+ goto out;
+ }
+
+ if (dm_dev_t(old, &dev_t[0], 32))
+ goto out;
+
+ do {
+ if (
+ /*
+ * if devmap target is "linear"
+ */
+ (dm_type(names->name, TGT_PART) > 0) &&
+
+ /*
+ * and the multipath mapname and the part mapname start
+ * the same
+ */
+ !strncmp(names->name, old, strlen(old)) &&
+
+ /*
+ * and we can fetch the map table from the kernel
+ */
+ !dm_get_map(names->name, &size, &buff[0]) &&
+
+ /*
+ * and the table maps over the multipath map
+ */
+ strstr(buff, dev_t)
+ ) {
+ /*
+ * then it's a kpartx generated partition.
+ * Rename it.
+ */
+ snprintf(buff, PARAMS_SIZE, "%s%s",
+ new, names->name + strlen(old));
+ dm_rename(names->name, buff);
+ condlog(4, "partition map %s renamed",
+ names->name);
+ }
+
+ next = names->next;
+ names = (void *) names + next;
+ } while (next);
+
+ r = 0;
+out:
+ dm_task_destroy (dmt);
+ return r;
+}
+
+int
dm_rename (char * old, char * new)
{
int r = 0;
struct dm_task *dmt;
+ if (dm_rename_partmaps(old, new))
+ return r;
+
if (!(dmt = dm_task_create(DM_DEVICE_RENAME)))
return r;
if (!dm_task_set_newname(dmt, new))
goto out;
-
+
dm_task_no_open_count(dmt);
+ if (!dm_task_set_cookie(dmt, &conf->cookie, 0))
+ goto out;
if (!dm_task_run(dmt))
goto out;
projects / platform / upstream / multipath-tools.git / blobdiff