X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=extras%2Fmultipath%2Fmain.c;h=39b4a9fa93870b25a8270d565b622cf4cda50a1f;hb=176857119a77aad650412d9fedb568da4b543e07;hp=9bceb265ba1fe4a2e1cf48b1f67868fde79e0d96;hpb=d877515791ae4d625d396cdb3a35903cdbf6fde6;p=elogind.git diff --git a/extras/multipath/main.c b/extras/multipath/main.c index 9bceb265b..39b4a9fa9 100644 --- a/extras/multipath/main.c +++ b/extras/multipath/main.c @@ -1,5 +1,5 @@ /* - * Soft: Description here... + * Soft: multipath device mapper target autoconfig * * Version: $Id: main.h,v 0.0.1 2003/09/18 15:13:38 cvaroqui Exp $ * @@ -160,8 +160,11 @@ get_serial (int fd, char * str) */ /* 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]; @@ -176,12 +179,39 @@ get_storageworks_wwid(int fd, char *str) 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; } @@ -195,6 +225,31 @@ basename(char * str1, char * str2) 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) { @@ -203,33 +258,80 @@ get_all_paths_sysfs(struct env * conf, struct path * all_paths) struct sysfs_directory * sdir; struct sysfs_directory * devp; struct sysfs_link * linkp; + char refwwid[WWID_SIZE]; + char empty_buff[WWID_SIZE]; char buff[FILE_NAME_SIZE]; + char path[FILE_NAME_SIZE]; + struct path curpath; - char block_path[FILE_NAME_SIZE]; + /* if called from udev, only consider the paths that relate to */ + /* to the device pointed by conf.hotplugdev */ + memset(empty_buff, 0, WWID_SIZE); + memset(refwwid, 0, WWID_SIZE); + if (strncmp("/devices", conf->hotplugdev, 8) == 0) { + sprintf(buff, "%s%s/block", + conf->sysfs_path, conf->hotplugdev); + memset(conf->hotplugdev, 0, FILE_NAME_SIZE); + readlink(buff, conf->hotplugdev, FILE_NAME_SIZE); + basename(conf->hotplugdev, buff); + sprintf(curpath.sg_dev, "/dev/%s", buff); + + if ((sg_fd = open(curpath.sg_dev, O_RDONLY)) < 0) + exit(1); + + get_lun_strings(sg_fd, &curpath); + get_unique_id(sg_fd, &curpath); + strcpy(refwwid, curpath.wwid); + memset(&curpath, 0, sizeof(path)); + } - sprintf(block_path, "%s/block", conf->sysfs_path); - sdir = sysfs_open_directory(block_path); + sprintf(path, "%s/block", conf->sysfs_path); + sdir = sysfs_open_directory(path); sysfs_read_directory(sdir); + dlist_for_each_data(sdir->subdirs, devp, struct sysfs_directory) { + if (blacklist(devp->name)) + continue; + sysfs_read_directory(devp); + if(devp->links == NULL) continue; + dlist_for_each_data(devp->links, linkp, struct sysfs_link) { if (!strncmp(linkp->name, "device", 6)) break; } + if (linkp == NULL) { continue; } basename(devp->path, buff); - 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) { + sprintf(curpath.sg_dev, "/dev/%s", buff); + + if ((sg_fd = open(curpath.sg_dev, O_RDONLY)) < 0) { + if (conf->verbose) + fprintf(stderr, "can't open %s\n", + curpath.sg_dev); continue; } - get_lun_strings(sg_fd, &all_paths[k]); - get_unique_id(sg_fd, &all_paths[k]); + + get_lun_strings(sg_fd, &curpath); + get_unique_id(sg_fd, &curpath); + + if (memcmp(empty_buff, refwwid, WWID_SIZE) != 0 && + strncmp(curpath.wwid, refwwid, WWID_SIZE) != 0) { + memset(&curpath, 0, sizeof(path)); + continue; + } + + strcpy(all_paths[k].sg_dev, curpath.sg_dev); + strcpy(all_paths[k].dev, curpath.sg_dev); + strcpy(all_paths[k].wwid, curpath.wwid); + strcpy(all_paths[k].vendor_id, curpath.vendor_id); + strcpy(all_paths[k].product_id, curpath.product_id); + memset(&curpath, 0, sizeof(path)); all_paths[k].state = do_tur(sg_fd); close(sg_fd); basename(linkp->target, buff); @@ -241,7 +343,6 @@ get_all_paths_sysfs(struct env * conf, struct path * all_paths) k++; } sysfs_close_directory(sdir); - return 0; } @@ -258,8 +359,12 @@ get_all_paths_nosysfs(struct env * conf, struct path * all_paths, 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); @@ -313,8 +418,12 @@ get_all_scsi_ids(struct env * conf, struct scsi_dev * all_scsi_ids) } 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) { @@ -494,26 +603,6 @@ make_dm_node(char * str) } -/* future use ? -static int -del_map(char * str) { - struct dm_task *dmt; - - if (!(dmt = dm_task_create(DM_DEVICE_REMOVE))) - return 0; - if (!dm_task_set_name(dmt, str)) - goto delout; - if (!dm_task_run(dmt)) - goto delout; - - printf("Deleted device map : %s\n", str); - - delout: - dm_task_destroy(dmt); - return 1; -} -*/ - static int add_map(struct env * conf, struct path * all_paths, struct multipath * mp, int index, int op) @@ -524,6 +613,11 @@ add_map(struct env * conf, struct path * all_paths, int i, np; long size = -1; + /* defaults for multipath target */ + int dm_pg_prio = 1; + char * dm_ps_name = "round-robin"; + int dm_ps_nr_args = 0; + if (!(dmt = dm_task_create(op))) return 0; @@ -539,7 +633,13 @@ add_map(struct env * conf, struct path * all_paths, } if (np == 0) goto addout; - params_p += sprintf(params_p, "%i 32", np); + + if (np < 1) + goto addout; + + params_p += sprintf(params_p, "%i %i %s %i %i", + conf->dm_path_test_int, dm_pg_prio, + dm_ps_name, np, dm_ps_nr_args); for (i=0; i<=mp[index].npaths; i++) { if (( 0 == all_paths[PINDEX(index,i)].state) || @@ -547,8 +647,8 @@ add_map(struct env * conf, struct path * all_paths, 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", + all_paths[PINDEX(index,i)].dev); } if (size < 0) @@ -577,44 +677,6 @@ add_map(struct env * conf, struct path * all_paths, return 1; } -/* -static int -get_table(const char * str) -{ - 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))) - return 0; - - if (!dm_task_set_name(dmt, str)) - goto out; - - if (!dm_task_run(dmt)) - goto out; - - do { - next = dm_get_next_target(dmt, next, &start, &length, - &target_type, ¶ms); - if (target_type) { - printf("%" PRIu64 " %" PRIu64 " %s %s\n", - start, length, target_type, params); - } - } while (next); - - r = 1; - - out: - dm_task_destroy(dmt); - return r; - -} -*/ - static int map_present(char * str) { @@ -652,27 +714,18 @@ static void usage(char * progname) { fprintf(stderr, VERSION_STRING); - fprintf(stderr, "Usage: %s [-v|-q] [-d] [-m max_devs]\n", progname); - fprintf(stderr, "\t-v\t\tverbose, print all paths and multipaths\n"); - fprintf(stderr, "\t-q\t\tquiet, no output at all\n"); + fprintf(stderr, "Usage: %s [-v|-q] [-d] [-i int] [-m max_devs]\n", progname); fprintf(stderr, "\t-d\t\tdry run, do not create or update devmaps\n"); + fprintf(stderr, "\t-i\t\tmultipath target param : polling interval\n"); fprintf(stderr, "\t-m max_devs\tscan {max_devs} devices at most\n"); + fprintf(stderr, "\t-q\t\tquiet, no output at all\n"); + fprintf(stderr, "\t-v\t\tverbose, print all paths and multipaths\n"); exit(1); } -static int -running(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"; struct multipath * mp; struct path * all_paths; struct scsi_dev * all_scsi_ids; @@ -685,6 +738,7 @@ main(int argc, char *argv[]) conf.verbose = 0; /* 1 == Print all_paths and mp */ conf.quiet = 0; /* 1 == Do not even print devmaps */ conf.with_sysfs = 0; /* Default to compat / suboptimal behaviour */ + conf.dm_path_test_int = 10; /* kindly provided by libsysfs */ if (0 == sysfs_get_mnt_path(conf.sysfs_path, FILE_NAME_SIZE)) @@ -705,6 +759,10 @@ main(int argc, char *argv[]) conf.quiet = 1; } else if (0 == strcmp("-d", argv[i])) conf.dry_run = 1; + else if (0 == strcmp("-i", argv[i])) + conf.dm_path_test_int = atoi(argv[++i]); + else if (0 == strcmp("scsi", argv[i])) + strcpy(conf.hotplugdev, argv[++i]); else if (*argv[i] == '-') { fprintf(stderr, "Unknown switch: %s\n", argv[i]); usage(argv[0]); @@ -715,26 +773,12 @@ main(int argc, char *argv[]) } - if (running(run)) { - if (conf.verbose) { - fprintf(stderr, "Already running.\n"); - fprintf(stderr, "If you know what you do, please "); - fprintf(stderr, "remove %s\n", run); - } - return 1; - } - - if(!open(run, O_CREAT)) - exit(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) { - unlink(run); + if (mp == NULL || all_paths == NULL || all_scsi_ids == NULL) exit(1); - } if (!conf.with_sysfs) { get_all_scsi_ids(&conf, all_scsi_ids); @@ -751,10 +795,8 @@ main(int argc, char *argv[]) fprintf(stdout, "\n"); } - if (conf.dry_run) { - unlink(run); + if (conf.dry_run) exit(0); - } for (k=0; k<=nmp; k++) { if (map_present(mp[k].wwid)) { @@ -763,6 +805,11 @@ main(int argc, char *argv[]) add_map(&conf, all_paths, mp, k, DM_DEVICE_CREATE); } } - unlink(run); + + /* free allocs */ + free(mp); + free(all_paths); + free(all_scsi_ids); + exit(0); }