[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

1 files changed, 78 insertions, 0 deletions

diff --git a/extras/multipath/unused.c b/extras/multipath/unused.c
new file mode 100644
index 0000000000..33b3e859d1
--- /dev/null
+++ b/extras/multipath/unused.c
@@ -0,0 +1,78 @@
+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
+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;
+}
+
+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, &params);
+                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;
+
+}