[PATCH] extras multipath update
incremental to 20031220, 2003-12-22 multipath-010 * don't print .sg_dev if equal to .dev (2.6) in print_path() * since the kernel code handles defective paths, remove all code to cope with them : * move do_tur() to unused.c * remove .state from path struct * remove .state settings & conditionals * add a cmdline switch to force maps to failover mode, ie 1 path per priority group * add default policies to the whitelist array (spread io == MULTIBUS / io forced to 1 path == FAILOVER) * move get_disk_size() call out of add_map() to coalesce() * comment tricky coalesce() fn * bogus unsused.c file renamed to unused.c
This commit is contained in:
parent
176857119a
commit
4081da7fe5
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@ -1,3 +1,17 @@
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2003-12-22 multipath-010
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* don't print .sg_dev if equal to .dev (2.6) in print_path()
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* since the kernel code handles defective paths, remove all
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code to cope with them :
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* move do_tur() to unused.c
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* remove .state from path struct
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* remove .state settings & conditionals
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* add a cmdline switch to force maps to failover mode,
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ie 1 path per priority group
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* add default policies to the whitelist array (spread io ==
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MULTIBUS / io forced to 1 path == FAILOVER)
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* move get_disk_size() call out of add_map() to coalesce()
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* comment tricky coalesce() fn
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* bogus unsused.c file renamed to unused.c
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2003-12-20 multipath-010
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2003-12-20 multipath-010
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* big ChangeLog update
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* big ChangeLog update
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* start to give a little control over target params :
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* start to give a little control over target params :
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@ -82,32 +82,6 @@ do_inq(int sg_fd, int cmddt, int evpd, unsigned int pg_op,
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return -1;
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return -1;
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}
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}
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static int
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do_tur(int fd)
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{
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unsigned char turCmdBlk[TUR_CMD_LEN] = { 0x00, 0, 0, 0, 0, 0 };
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struct sg_io_hdr io_hdr;
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unsigned char sense_buffer[32];
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memset(&io_hdr, 0, sizeof (struct sg_io_hdr));
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io_hdr.interface_id = 'S';
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io_hdr.cmd_len = sizeof (turCmdBlk);
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io_hdr.mx_sb_len = sizeof (sense_buffer);
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io_hdr.dxfer_direction = SG_DXFER_NONE;
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io_hdr.cmdp = turCmdBlk;
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io_hdr.sbp = sense_buffer;
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io_hdr.timeout = 20000;
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io_hdr.pack_id = 0;
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if (ioctl(fd, SG_IO, &io_hdr) < 0) {
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close(fd);
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return 0;
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}
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if (io_hdr.info & SG_INFO_OK_MASK) {
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return 0;
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}
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return 1;
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}
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static void
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static void
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sprint_wwid(char * buff, const char * str)
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sprint_wwid(char * buff, const char * str)
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{
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{
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@ -183,32 +157,34 @@ get_unique_id(int fd, struct path * mypath)
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static struct {
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static struct {
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char * vendor;
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char * vendor;
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char * product;
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char * product;
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int iopolicy;
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int (*getuid) (int fd, char * wwid);
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int (*getuid) (int fd, char * wwid);
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} wlist[] = {
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} wlist[] = {
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{"COMPAQ ", "HSV110 (C)COMPAQ", &get_evpd_wwid},
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{"COMPAQ ", "HSV110 (C)COMPAQ", MULTIBUS, &get_evpd_wwid},
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{"COMPAQ ", "MSA1000 ", &get_evpd_wwid},
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{"COMPAQ ", "MSA1000 ", MULTIBUS, &get_evpd_wwid},
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{"COMPAQ ", "MSA1000 VOLUME ", &get_evpd_wwid},
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{"COMPAQ ", "MSA1000 VOLUME ", MULTIBUS, &get_evpd_wwid},
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{"DEC ", "HSG80 ", &get_evpd_wwid},
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{"DEC ", "HSG80 ", MULTIBUS, &get_evpd_wwid},
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{"HP ", "HSV100 ", &get_evpd_wwid},
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{"HP ", "HSV100 ", MULTIBUS, &get_evpd_wwid},
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{"HP ", "A6189A ", &get_evpd_wwid},
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{"HP ", "A6189A ", MULTIBUS, &get_evpd_wwid},
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{"HP ", "OPEN- ", &get_evpd_wwid},
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{"HP ", "OPEN- ", MULTIBUS, &get_evpd_wwid},
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{"DDN ", "SAN DataDirector", &get_evpd_wwid},
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{"DDN ", "SAN DataDirector", MULTIBUS, &get_evpd_wwid},
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{"FSC ", "CentricStor ", &get_evpd_wwid},
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{"FSC ", "CentricStor ", MULTIBUS, &get_evpd_wwid},
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{"HITACHI ", "DF400 ", &get_evpd_wwid},
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{"HITACHI ", "DF400 ", MULTIBUS, &get_evpd_wwid},
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{"HITACHI ", "DF500 ", &get_evpd_wwid},
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{"HITACHI ", "DF500 ", MULTIBUS, &get_evpd_wwid},
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{"HITACHI ", "DF600 ", &get_evpd_wwid},
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{"HITACHI ", "DF600 ", MULTIBUS, &get_evpd_wwid},
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{"IBM ", "ProFibre 4000R ", &get_evpd_wwid},
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{"IBM ", "ProFibre 4000R ", MULTIBUS, &get_evpd_wwid},
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{"SGI ", "TP9100 ", &get_evpd_wwid},
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{"SGI ", "TP9100 ", MULTIBUS, &get_evpd_wwid},
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{"SGI ", "TP9300 ", &get_evpd_wwid},
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{"SGI ", "TP9300 ", MULTIBUS, &get_evpd_wwid},
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{"SGI ", "TP9400 ", &get_evpd_wwid},
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{"SGI ", "TP9400 ", MULTIBUS, &get_evpd_wwid},
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{"SGI ", "TP9500 ", &get_evpd_wwid},
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{"SGI ", "TP9500 ", MULTIBUS, &get_evpd_wwid},
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{NULL, NULL, NULL},
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{NULL, NULL, 0, NULL},
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};
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};
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for (i = 0; wlist[i].vendor; i++) {
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for (i = 0; wlist[i].vendor; i++) {
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if (strncmp(mypath->vendor_id, wlist[i].vendor, 8) == 0 &&
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if (strncmp(mypath->vendor_id, wlist[i].vendor, 8) == 0 &&
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strncmp(mypath->product_id, wlist[i].product, 16) == 0) {
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strncmp(mypath->product_id, wlist[i].product, 16) == 0) {
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wlist[i].getuid(fd, mypath->wwid);
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wlist[i].getuid(fd, mypath->wwid);
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mypath->iopolicy = wlist[i].iopolicy;
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return 0;
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return 0;
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}
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}
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}
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}
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@ -264,7 +240,7 @@ get_all_paths_sysfs(struct env * conf, struct path * all_paths)
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char path[FILE_NAME_SIZE];
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char path[FILE_NAME_SIZE];
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struct path curpath;
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struct path curpath;
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/* if called from udev, only consider the paths that relate to */
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/* if called from hotplug, only consider the paths that relate to */
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/* to the device pointed by conf.hotplugdev */
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/* to the device pointed by conf.hotplugdev */
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memset(empty_buff, 0, WWID_SIZE);
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memset(empty_buff, 0, WWID_SIZE);
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memset(refwwid, 0, WWID_SIZE);
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memset(refwwid, 0, WWID_SIZE);
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strcpy(all_paths[k].wwid, curpath.wwid);
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strcpy(all_paths[k].wwid, curpath.wwid);
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strcpy(all_paths[k].vendor_id, curpath.vendor_id);
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strcpy(all_paths[k].vendor_id, curpath.vendor_id);
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strcpy(all_paths[k].product_id, curpath.product_id);
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strcpy(all_paths[k].product_id, curpath.product_id);
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all_paths[k].iopolicy = curpath.iopolicy;
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/* done with curpath, zero for reuse */
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memset(&curpath, 0, sizeof(path));
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memset(&curpath, 0, sizeof(path));
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all_paths[k].state = do_tur(sg_fd);
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close(sg_fd);
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close(sg_fd);
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basename(linkp->target, buff);
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basename(linkp->target, buff);
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sscanf(buff, "%i:%i:%i:%i",
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sscanf(buff, "%i:%i:%i:%i",
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}
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}
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get_lun_strings(sg_fd, &all_paths[k]);
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get_lun_strings(sg_fd, &all_paths[k]);
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get_unique_id(sg_fd, &all_paths[k]);
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get_unique_id(sg_fd, &all_paths[k]);
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all_paths[k].state = do_tur(sg_fd);
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if (0 > ioctl(sg_fd, SG_GET_SCSI_ID, &(all_paths[k].sg_id)))
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if (0 > ioctl(sg_fd, SG_GET_SCSI_ID, &(all_paths[k].sg_id)))
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printf("device %s failed on sg ioctl, skip\n",
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printf("device %s failed on sg ioctl, skip\n",
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file_name);
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file_name);
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buff[0] = 'a' + (char) k;
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buff[0] = 'a' + (char) k;
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buff[1] = '\0';
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buff[1] = '\0';
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strcat(fname, buff);
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strcat(fname, buff);
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} else if (k <= 255) { /* assumes sequence goes x,y,z,aa,ab,ac etc */
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} else if (k <= 255) {
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/* assumes sequence goes x,y,z,aa,ab,ac etc */
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big = k / 26;
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big = k / 26;
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little = k - (26 * big);
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little = k - (26 * big);
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big = big - 1;
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big = big - 1;
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@ -463,8 +442,8 @@ print_path(struct path * all_paths, int k, int style)
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all_paths[k].sg_id.host_no,
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all_paths[k].sg_id.host_no,
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all_paths[k].sg_id.channel,
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all_paths[k].sg_id.channel,
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all_paths[k].sg_id.scsi_id, all_paths[k].sg_id.lun);
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all_paths[k].sg_id.scsi_id, all_paths[k].sg_id.lun);
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printf("%s ", all_paths[k].sg_dev);
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if(0 != strcmp(all_paths[k].sg_dev, all_paths[k].dev))
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printf("op:%i ", all_paths[k].state);
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printf("%s ", all_paths[k].sg_dev);
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printf("%s ", all_paths[k].dev);
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printf("%s ", all_paths[k].dev);
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printf("[%.16s]\n", all_paths[k].product_id);
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printf("[%.16s]\n", all_paths[k].product_id);
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}
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}
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@ -495,48 +474,6 @@ print_all_mp(struct path * all_paths, struct multipath * mp, int nmp)
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}
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}
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}
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}
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static int
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coalesce_paths(struct env * conf, struct multipath * mp,
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struct path * all_paths)
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{
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int k, i, nmp, np, already_done;
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char empty_buff[WWID_SIZE];
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nmp = -1;
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already_done = 0;
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memset(empty_buff, 0, WWID_SIZE);
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for (k = 0; k < conf->max_devs - 1; k++) {
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/* skip this path if no unique id has been found */
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if (memcmp(empty_buff, all_paths[k].wwid, WWID_SIZE) == 0)
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continue;
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np = 0;
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for (i = 0; i <= nmp; i++) {
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if (0 == strcmp(mp[i].wwid, all_paths[k].wwid))
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already_done = 1;
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}
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if (already_done) {
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already_done = 0;
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continue;
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}
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nmp++;
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strcpy(mp[nmp].wwid, all_paths[k].wwid);
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PINDEX(nmp,np) = k;
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for (i = k + 1; i < conf->max_devs; i++) {
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if (0 == strcmp(all_paths[k].wwid, all_paths[i].wwid)) {
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np++;
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PINDEX(nmp,np) = i;
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mp[nmp].npaths = np;
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}
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}
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}
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return nmp;
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}
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static long
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static long
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get_disk_size (struct env * conf, char * dev) {
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get_disk_size (struct env * conf, char * dev) {
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long size;
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long size;
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@ -563,6 +500,54 @@ get_disk_size (struct env * conf, char * dev) {
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return -1;
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return -1;
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}
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}
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static int
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coalesce_paths(struct env * conf, struct multipath * mp,
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struct path * all_paths)
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{
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int k, i, nmp, np, already_done;
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char empty_buff[WWID_SIZE];
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nmp = -1;
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already_done = 0;
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memset(empty_buff, 0, WWID_SIZE);
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for (k = 0; k < conf->max_devs - 1; k++) {
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/* skip this path for some reason */
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/* 1. if path has no unique id */
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if (memcmp(empty_buff, all_paths[k].wwid, WWID_SIZE) == 0)
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continue;
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/* 2. mp with this uid already instanciated */
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for (i = 0; i <= nmp; i++) {
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if (0 == strcmp(mp[i].wwid, all_paths[k].wwid))
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already_done = 1;
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}
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if (already_done) {
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already_done = 0;
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continue;
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}
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/* at this point, we know we really got a new mp */
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np = 0;
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nmp++;
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strcpy(mp[nmp].wwid, all_paths[k].wwid);
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PINDEX(nmp,np) = k;
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if (mp[nmp].size == 0)
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mp[nmp].size = get_disk_size(conf, all_paths[k].dev);
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for (i = k + 1; i < conf->max_devs; i++) {
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if (0 == strcmp(all_paths[k].wwid, all_paths[i].wwid)) {
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np++;
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PINDEX(nmp,np) = i;
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mp[nmp].npaths = np;
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}
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}
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}
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return nmp;
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}
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static int
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static int
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make_dm_node(char * str)
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make_dm_node(char * str)
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{
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{
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@ -611,7 +596,6 @@ add_map(struct env * conf, struct path * all_paths,
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char * params_p;
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char * params_p;
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struct dm_task *dmt;
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struct dm_task *dmt;
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int i, np;
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int i, np;
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long size = -1;
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/* defaults for multipath target */
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/* defaults for multipath target */
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int dm_pg_prio = 1;
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int dm_pg_prio = 1;
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@ -627,8 +611,7 @@ add_map(struct env * conf, struct path * all_paths,
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np = 0;
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np = 0;
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for (i=0; i<=mp[index].npaths; i++) {
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for (i=0; i<=mp[index].npaths; i++) {
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if ((1 == all_paths[PINDEX(index,i)].state) &&
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if (0 == all_paths[PINDEX(index,i)].sg_id.scsi_type)
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(0 == all_paths[PINDEX(index,i)].sg_id.scsi_type))
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np++;
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np++;
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}
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}
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if (np == 0)
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if (np == 0)
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@ -637,33 +620,48 @@ add_map(struct env * conf, struct path * all_paths,
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if (np < 1)
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if (np < 1)
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goto addout;
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goto addout;
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params_p += sprintf(params_p, "%i %i %s %i %i",
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params_p += sprintf(params_p, "%i", conf->dm_path_test_int);
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conf->dm_path_test_int, dm_pg_prio,
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dm_ps_name, np, dm_ps_nr_args);
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if (all_paths[PINDEX(index,0)].iopolicy == MULTIBUS &&
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!conf->forcedfailover ) {
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for (i=0; i<=mp[index].npaths; i++) {
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params_p += sprintf(params_p, " %i %s %i %i",
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if (( 0 == all_paths[PINDEX(index,i)].state) ||
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dm_pg_prio, dm_ps_name, np, dm_ps_nr_args);
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(0 != all_paths[PINDEX(index,i)].sg_id.scsi_type))
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continue;
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for (i=0; i<=mp[index].npaths; i++) {
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if (size < 0)
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if (0 != all_paths[PINDEX(index,i)].sg_id.scsi_type)
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size = get_disk_size(conf, all_paths[PINDEX(index,0)].dev);
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continue;
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params_p += sprintf(params_p, " %s",
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params_p += sprintf(params_p, " %s",
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all_paths[PINDEX(index,i)].dev);
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all_paths[PINDEX(index,i)].dev);
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}
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}
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}
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if (size < 0)
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if (all_paths[PINDEX(index,0)].iopolicy == FAILOVER ||
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conf->forcedfailover) {
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for (i=0; i<=mp[index].npaths; i++) {
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|
if (0 != all_paths[PINDEX(index,i)].sg_id.scsi_type)
|
||||||
|
continue;
|
||||||
|
params_p += sprintf(params_p, " %i %s ",
|
||||||
|
dm_pg_prio, dm_ps_name);
|
||||||
|
params_p += sprintf(params_p, "1 %i",
|
||||||
|
dm_ps_nr_args);
|
||||||
|
params_p += sprintf(params_p, " %s",
|
||||||
|
all_paths[PINDEX(index,i)].dev);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (mp[index].size < 0)
|
||||||
goto addout;
|
goto addout;
|
||||||
|
|
||||||
if (!conf->quiet) {
|
if (!conf->quiet) {
|
||||||
if (op == DM_DEVICE_RELOAD)
|
if (op == DM_DEVICE_RELOAD)
|
||||||
printf("U|");
|
printf("U:");
|
||||||
if (op == DM_DEVICE_CREATE)
|
if (op == DM_DEVICE_CREATE)
|
||||||
printf("N|");
|
printf("N:");
|
||||||
printf("%s : 0 %li %s %s\n",
|
printf("%s:0 %li %s %s\n",
|
||||||
mp[index].wwid, size, DM_TARGET, params);
|
mp[index].wwid, mp[index].size, DM_TARGET, params);
|
||||||
}
|
}
|
||||||
|
|
||||||
if (!dm_task_add_target(dmt, 0, size, DM_TARGET, params))
|
if (!dm_task_add_target(dmt, 0, mp[index].size, DM_TARGET, params))
|
||||||
goto addout;
|
goto addout;
|
||||||
|
|
||||||
if (!dm_task_run(dmt))
|
if (!dm_task_run(dmt))
|
||||||
|
@ -714,8 +712,10 @@ static void
|
||||||
usage(char * progname)
|
usage(char * progname)
|
||||||
{
|
{
|
||||||
fprintf(stderr, VERSION_STRING);
|
fprintf(stderr, VERSION_STRING);
|
||||||
fprintf(stderr, "Usage: %s [-v|-q] [-d] [-i int] [-m max_devs]\n", progname);
|
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-d\t\tdry run, do not create or update devmaps\n");
|
||||||
|
fprintf(stderr, "\t-f\t\tforce maps to failover mode (1 path/pg)\n");
|
||||||
fprintf(stderr, "\t-i\t\tmultipath target param : polling interval\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-m max_devs\tscan {max_devs} devices at most\n");
|
||||||
fprintf(stderr, "\t-q\t\tquiet, no output at all\n");
|
fprintf(stderr, "\t-q\t\tquiet, no output at all\n");
|
||||||
|
@ -759,6 +759,8 @@ main(int argc, char *argv[])
|
||||||
conf.quiet = 1;
|
conf.quiet = 1;
|
||||||
} else if (0 == strcmp("-d", argv[i]))
|
} else if (0 == strcmp("-d", argv[i]))
|
||||||
conf.dry_run = 1;
|
conf.dry_run = 1;
|
||||||
|
else if (0 == strcmp("-f", argv[i]))
|
||||||
|
conf.forcedfailover = 1;
|
||||||
else if (0 == strcmp("-i", argv[i]))
|
else if (0 == strcmp("-i", argv[i]))
|
||||||
conf.dm_path_test_int = atoi(argv[++i]);
|
conf.dm_path_test_int = atoi(argv[++i]);
|
||||||
else if (0 == strcmp("scsi", argv[i]))
|
else if (0 == strcmp("scsi", argv[i]))
|
||||||
|
|
|
@ -48,6 +48,10 @@
|
||||||
#define BLKGETSIZE _IO(0x12,96)
|
#define BLKGETSIZE _IO(0x12,96)
|
||||||
#define DM_TARGET "multipath"
|
#define DM_TARGET "multipath"
|
||||||
|
|
||||||
|
/* Storage controlers cpabilities */
|
||||||
|
#define FAILOVER 0
|
||||||
|
#define MULTIBUS 1
|
||||||
|
|
||||||
#define PINDEX(x,y) mp[(x)].pindex[(y)]
|
#define PINDEX(x,y) mp[(x)].pindex[(y)]
|
||||||
|
|
||||||
/* global types */
|
/* global types */
|
||||||
|
@ -80,16 +84,17 @@ struct path {
|
||||||
char sg_dev[FILE_NAME_SIZE];
|
char sg_dev[FILE_NAME_SIZE];
|
||||||
struct scsi_idlun scsi_id;
|
struct scsi_idlun scsi_id;
|
||||||
struct sg_id sg_id;
|
struct sg_id sg_id;
|
||||||
int state;
|
|
||||||
char wwid[WWID_SIZE];
|
char wwid[WWID_SIZE];
|
||||||
char vendor_id[8];
|
char vendor_id[8];
|
||||||
char product_id[16];
|
char product_id[16];
|
||||||
char rev[4];
|
char rev[4];
|
||||||
|
int iopolicy;
|
||||||
};
|
};
|
||||||
|
|
||||||
struct multipath {
|
struct multipath {
|
||||||
char wwid[WWID_SIZE];
|
char wwid[WWID_SIZE];
|
||||||
int npaths;
|
int npaths;
|
||||||
|
long size;
|
||||||
int pindex[MAX_MP_PATHS];
|
int pindex[MAX_MP_PATHS];
|
||||||
};
|
};
|
||||||
|
|
||||||
|
@ -98,6 +103,7 @@ struct env {
|
||||||
int verbose;
|
int verbose;
|
||||||
int quiet;
|
int quiet;
|
||||||
int dry_run;
|
int dry_run;
|
||||||
|
int forcedfailover;
|
||||||
int with_sysfs;
|
int with_sysfs;
|
||||||
int dm_path_test_int;
|
int dm_path_test_int;
|
||||||
char sysfs_path[FILE_NAME_SIZE];
|
char sysfs_path[FILE_NAME_SIZE];
|
||||||
|
|
|
@ -1,3 +1,29 @@
|
||||||
|
static int
|
||||||
|
do_tur(int fd)
|
||||||
|
{
|
||||||
|
unsigned char turCmdBlk[TUR_CMD_LEN] = { 0x00, 0, 0, 0, 0, 0 };
|
||||||
|
struct sg_io_hdr io_hdr;
|
||||||
|
unsigned char sense_buffer[32];
|
||||||
|
|
||||||
|
memset(&io_hdr, 0, sizeof (struct sg_io_hdr));
|
||||||
|
io_hdr.interface_id = 'S';
|
||||||
|
io_hdr.cmd_len = sizeof (turCmdBlk);
|
||||||
|
io_hdr.mx_sb_len = sizeof (sense_buffer);
|
||||||
|
io_hdr.dxfer_direction = SG_DXFER_NONE;
|
||||||
|
io_hdr.cmdp = turCmdBlk;
|
||||||
|
io_hdr.sbp = sense_buffer;
|
||||||
|
io_hdr.timeout = 20000;
|
||||||
|
io_hdr.pack_id = 0;
|
||||||
|
if (ioctl(fd, SG_IO, &io_hdr) < 0) {
|
||||||
|
close(fd);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
if (io_hdr.info & SG_INFO_OK_MASK) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
static int
|
static int
|
||||||
del_map(char * str) {
|
del_map(char * str) {
|
||||||
struct dm_task *dmt;
|
struct dm_task *dmt;
|
Loading…
Reference in New Issue