#include <sys/types.h>
#include <sys/stat.h>
#include <linux/kdev_t.h>
-#include <errno.h>
#include <string.h>
#include <sys/ioctl.h>
#include <libsysfs.h>
-#include <libdevmapper.h>
+#include "libdevmapper/libdevmapper.h"
#include "main.h"
static int
do_inq(int sg_fd, int cmddt, int evpd, unsigned int pg_op,
void *resp, int mx_resp_len, int noisy)
{
- int res;
unsigned char inqCmdBlk[INQUIRY_CMDLEN] =
{ INQUIRY_CMD, 0, 0, 0, 0, 0 };
unsigned char sense_b[SENSE_BUFF_LEN];
perror("SG_IO (inquiry) error");
return -1;
}
- res = sg_err_category3(&io_hdr);
- switch (res) {
- case SG_ERR_CAT_CLEAN:
- case SG_ERR_CAT_RECOVERED:
+
+ /* treat SG_ERR here to get rid of sg_err.[ch] */
+ io_hdr.status &= 0x7e;
+ if ((0 == io_hdr.status) && (0 == io_hdr.host_status) &&
+ (0 == io_hdr.driver_status))
return 0;
- default:
- return -1;
+ if ((SCSI_CHECK_CONDITION == io_hdr.status) ||
+ (SCSI_COMMAND_TERMINATED == io_hdr.status) ||
+ (SG_ERR_DRIVER_SENSE == (0xf & io_hdr.driver_status))) {
+ if (io_hdr.sbp && (io_hdr.sb_len_wr > 2)) {
+ int sense_key;
+ unsigned char * sense_buffer = io_hdr.sbp;
+ if (sense_buffer[0] & 0x2)
+ sense_key = sense_buffer[1] & 0xf;
+ else
+ sense_key = sense_buffer[2] & 0xf;
+ if(RECOVERED_ERROR == sense_key)
+ return 0;
+ }
}
+ return -1;
}
static int
*/
/* hardware vendor specifics : add support for new models below */
+
+/* this one get EVPD page 0x83 off 8 */
+/* tested ok with StorageWorks */
static int
-get_storageworks_wwid(int fd, char *str)
+get_evpd_wwid(int fd, char *str)
{
char buff[64];
static int
get_unique_id(int fd, struct path * mypath)
{
- if (strncmp(mypath->product_id, "HSV110 (C)COMPAQ", 16) == 0 ||
- strncmp(mypath->product_id, "HSG80 ", 16) == 0) {
- get_storageworks_wwid(fd, mypath->wwid);
- return 0;
+ int i;
+ static struct {
+ char * vendor;
+ char * product;
+ int (*getuid) (int fd, char * wwid);
+ } wlist[] = {
+ {"COMPAQ ", "HSV110 (C)COMPAQ", &get_evpd_wwid},
+ {"COMPAQ ", "MSA1000 ", &get_evpd_wwid},
+ {"COMPAQ ", "MSA1000 VOLUME ", &get_evpd_wwid},
+ {"DEC ", "HSG80 ", &get_evpd_wwid},
+ {"HP ", "HSV100 ", &get_evpd_wwid},
+ {"HP ", "A6189A ", &get_evpd_wwid},
+ {"HP ", "OPEN- ", &get_evpd_wwid},
+ {"DDN ", "SAN DataDirector", &get_evpd_wwid},
+ {"FSC ", "CentricStor ", &get_evpd_wwid},
+ {"HITACHI ", "DF400 ", &get_evpd_wwid},
+ {"HITACHI ", "DF500 ", &get_evpd_wwid},
+ {"HITACHI ", "DF600 ", &get_evpd_wwid},
+ {"IBM ", "ProFibre 4000R ", &get_evpd_wwid},
+ {"SGI ", "TP9100 ", &get_evpd_wwid},
+ {"SGI ", "TP9300 ", &get_evpd_wwid},
+ {"SGI ", "TP9400 ", &get_evpd_wwid},
+ {"SGI ", "TP9500 ", &get_evpd_wwid},
+ {NULL, NULL, NULL},
+ };
+
+ for (i = 0; wlist[i].vendor; i++) {
+ if (strncmp(mypath->vendor_id, wlist[i].vendor, 8) == 0 &&
+ strncmp(mypath->product_id, wlist[i].product, 16) == 0) {
+ wlist[i].getuid(fd, mypath->wwid);
+ return 0;
+ }
}
-
return 1;
}
strcpy(str2, ++p);
}
+static int
+blacklist (char * dev) {
+ int i;
+ static struct {
+ char * headstr;
+ int lengh;
+ } blist[] = {
+ {"cciss", 5},
+ {"hd", 2},
+ {"md", 2},
+ {"dm", 2},
+ {"sr", 2},
+ {"scd", 3},
+ {"ram", 3},
+ {"raw", 3},
+ {NULL, 0},
+ };
+
+ for (i = 0; blist[i].lengh; i++) {
+ if (strncmp(dev, blist[i].headstr, blist[i].lengh) == 0)
+ return 1;
+ }
+ return 0;
+}
+
static int
get_all_paths_sysfs(struct env * conf, struct path * all_paths)
{
int sg_fd;
struct sysfs_directory * sdir;
struct sysfs_directory * devp;
- struct sysfs_dlink * linkp;
+ struct sysfs_link * linkp;
char buff[FILE_NAME_SIZE];
char block_path[FILE_NAME_SIZE];
sprintf(block_path, "%s/block", conf->sysfs_path);
sdir = sysfs_open_directory(block_path);
sysfs_read_directory(sdir);
- devp = sdir->subdirs;
- while (devp != NULL) {
+ dlist_for_each_data(sdir->subdirs, devp, struct sysfs_directory) {
+ if (blacklist(devp->name))
+ continue;
sysfs_read_directory(devp);
- linkp = devp->links;
- while (linkp != NULL) {
+ if(devp->links == NULL)
+ continue;
+ dlist_for_each_data(devp->links, linkp, struct sysfs_link) {
if (!strncmp(linkp->name, "device", 6))
break;
- linkp = linkp->next;
}
if (linkp == NULL) {
- devp = devp->next;
continue;
}
sprintf(all_paths[k].sg_dev, "/dev/%s", buff);
strcpy(all_paths[k].dev, all_paths[k].sg_dev);
if ((sg_fd = open(all_paths[k].sg_dev, O_RDONLY)) < 0) {
- devp = devp->next;
+ if (conf->verbose)
+ fprintf(stderr, "can't open %s. mknod ?",
+ all_paths[k].sg_dev);
continue;
}
get_lun_strings(sg_fd, &all_paths[k]);
get_unique_id(sg_fd, &all_paths[k]);
all_paths[k].state = do_tur(sg_fd);
close(sg_fd);
- basename(linkp->target->path, buff);
+ basename(linkp->target, buff);
sscanf(buff, "%i:%i:%i:%i",
&all_paths[k].sg_id.host_no,
&all_paths[k].sg_id.channel,
&all_paths[k].sg_id.scsi_id,
&all_paths[k].sg_id.lun);
k++;
- devp = devp->next;
}
sysfs_close_directory(sdir);
sprintf(buff, "%d", k);
strncat(file_name, buff, FILE_NAME_SIZE);
strcpy(all_paths[k].sg_dev, file_name);
- if ((sg_fd = open(file_name, O_RDONLY)) < 0)
+ if ((sg_fd = open(file_name, O_RDONLY)) < 0) {
+ if (conf->verbose)
+ fprintf(stderr, "can't open %s. mknod ?",
+ file_name);
continue;
+ }
get_lun_strings(sg_fd, &all_paths[k]);
get_unique_id(sg_fd, &all_paths[k]);
all_paths[k].state = do_tur(sg_fd);
} else
strcat(fname, "xxxx");
- if ((fd = open(fname, O_RDONLY)) < 0)
+ if ((fd = open(fname, O_RDONLY)) < 0) {
+ if (conf->verbose)
+ fprintf(stderr, "can't open %s. mknod ?",
+ fname);
continue;
+ }
res = ioctl(fd, SCSI_IOCTL_GET_IDLUN, &my_scsi_id);
if (res < 0) {
make_dm_node(char * str)
{
int r = 0;
- dev_t dev;
char buff[FILE_NAME_SIZE];
- int major, minor;
struct dm_names * names;
unsigned next = 0;
struct dm_task *dmt;
names = (void *) names + next;
} while (next);
- major = (int) MAJOR(names->dev);
- minor = (int) MINOR(names->dev);
-
- dev = major << sizeof(dev_t);
- dev = dev | minor;
sprintf(buff, "/dev/mapper/%s", str);
unlink(buff);
- mknod(buff, 0600 | S_IFBLK, dev);
+ mknod(buff, 0600 | S_IFBLK, names->dev);
out:
dm_task_destroy(dmt);
int i, np;
long size = -1;
+ /* defaults for multipath target */
+ int dm_nr_path_args = 2;
+ int dm_path_test_int = 10;
+ char * dm_ps_name = "round-robin";
+ int dm_ps_nr_args = 2;
+ int dm_path_failback_int = 10;
+ int dm_path_nr_fail = 2;
+ int dm_ps_prio = 1;
+ int dm_ps_min_io = 2;
+
+
if (!(dmt = dm_task_create(op)))
return 0;
}
if (np == 0)
goto addout;
- params_p += sprintf(params_p, "%i 32", np);
+ /* temporarily disable creation of single path maps */
+ /* Sistina should modify the target limits */
+ if (np < 2)
+ goto addout;
+
+ params_p += sprintf(params_p, "%i %i %i %s %i",
+ np, dm_nr_path_args, dm_path_test_int,
+ dm_ps_name, dm_ps_nr_args);
for (i=0; i<=mp[index].npaths; i++) {
if (( 0 == all_paths[PINDEX(index,i)].state) ||
continue;
if (size < 0)
size = get_disk_size(conf, all_paths[PINDEX(index,0)].dev);
- params_p += sprintf(params_p, " %s %i",
- all_paths[PINDEX(index,i)].dev, 0);
+ params_p += sprintf(params_p, " %s %i %i %i %i",
+ all_paths[PINDEX(index,i)].dev,
+ dm_path_failback_int, dm_path_nr_fail,
+ dm_ps_prio, dm_ps_min_io);
}
if (size < 0)
exit(1);
}
+static int
+filepresent(char * run) {
+ struct stat buf;
+
+ if(!stat(run, &buf))
+ return 1;
+ return 0;
+}
+
int
main(int argc, char *argv[])
{
+ char * run = "/var/run/multipath.run";
+ char * resched = "/var/run/multipath.reschedule";
struct multipath * mp;
struct path * all_paths;
struct scsi_dev * all_scsi_ids;
}
+ if (filepresent(run)) {
+ if (conf.verbose) {
+ fprintf(stderr, "Already running.\n");
+ fprintf(stderr, "If you know what you do, please ");
+ fprintf(stderr, "remove %s\n", run);
+ }
+ /* leave a trace that we were called while already running */
+ open(resched, O_CREAT);
+ return 1;
+ }
+
/* dynamic allocations */
mp = malloc(conf.max_devs * sizeof(struct multipath));
all_paths = malloc(conf.max_devs * sizeof(struct path));
all_scsi_ids = malloc(conf.max_devs * sizeof(struct scsi_dev));
- if (mp == NULL || all_paths == NULL || all_scsi_ids == NULL)
+ if (mp == NULL || all_paths == NULL || all_scsi_ids == NULL) {
+ unlink(run);
+ exit(1);
+ }
+start:
+ if(!open(run, O_CREAT))
exit(1);
if (!conf.with_sysfs) {
if (conf.verbose) {
print_all_path(&conf, all_paths);
- printf("\n");
+ fprintf(stdout, "\n");
print_all_mp(all_paths, mp, nmp);
- printf("\n");
+ fprintf(stdout, "\n");
}
- if (conf.dry_run)
+ if (conf.dry_run) {
+ unlink(run);
exit(0);
+ }
for (k=0; k<=nmp; k++) {
if (map_present(mp[k].wwid)) {
add_map(&conf, all_paths, mp, k, DM_DEVICE_CREATE);
}
}
+ unlink(run);
+
+ /* start again if we were ask to during this process run */
+ /* ie. do not loose an event-asked run */
+ if (filepresent(resched)) {
+ unlink(resched);
+ goto start;
+ }
exit(0);
}
~ianmdlvl / elogind.git / blobdiff