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[PATCH] extras multipath update 

incremental to 20031222,

 2003-12-22 multipath-010
        * introduce dm-simplecmd for RESUME & SUSPEND requests
        * split add_map() in setup_map() & dm-addmap()
        * setup_map() correctly submits "SUSPEND-RELOAD-RESUME or CREATE"
          sequences instead of the bogus "RELOAD or CREATE"
This commit is contained in:
christophe.varoqui@free.fr 2003-12-22 20:52:01 -08:00 committed by Greg KH
parent 4081da7fe5
commit 88bca8484d
2 changed files with 53 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
extras/multipath/ChangeLog
View File

@ -1,4 +1,8 @@
2003-12-22 multipath-010
* introduce dm-simplecmd for RESUME & SUSPEND requests
* split add_map() in setup_map() & dm-addmap()
* setup_map() correctly submits "SUSPEND-RELOAD-RESUME or CREATE"
sequences instead of the bogus "RELOAD or CREATE"
* 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 :

70
extras/multipath/main.c
View File

@ -589,12 +589,50 @@ make_dm_node(char * str)
}
static int
add_map(struct env * conf, struct path * all_paths,
dm_simplecmd(int task, const char *name) {
int r = 0;
struct dm_task *dmt;
if (!(dmt = dm_task_create(task)))
return 0;
if (!dm_task_set_name(dmt, name))
goto out;
r = dm_task_run(dmt);
out:
dm_task_destroy(dmt);
return r;
}
static int
dm_addmap(int task, const char *name, const char *params, long size) {
struct dm_task *dmt;
if (!(dmt = dm_task_create(task)))
return 0;
if (!dm_task_set_name(dmt, name))
goto addout;
if (!dm_task_add_target(dmt, 0, size, DM_TARGET, params))
goto addout;
if (!dm_task_run(dmt))
goto addout;
addout:
dm_task_destroy(dmt);
return 1;
}
static int
setup_map(struct env * conf, struct path * all_paths,
struct multipath * mp, int index, int op)
{
char params[255];
char * params_p;
struct dm_task *dmt;
int i, np;
/* defaults for multipath target */
@ -602,11 +640,6 @@ add_map(struct env * conf, struct path * all_paths,
char * dm_ps_name = "round-robin";
int dm_ps_nr_args = 0;
if (!(dmt = dm_task_create(op)))
return 0;
if (!dm_task_set_name(dmt, mp[index].wwid))
goto addout;
params_p = &params[0];
np = 0;
@ -614,11 +647,9 @@ add_map(struct env * conf, struct path * all_paths,
if (0 == all_paths[PINDEX(index,i)].sg_id.scsi_type)
np++;
}
if (np == 0)
goto addout;
if (np < 1)
goto addout;
return 0;
params_p += sprintf(params_p, "%i", conf->dm_path_test_int);
@ -650,7 +681,7 @@ add_map(struct env * conf, struct path * all_paths,
}
if (mp[index].size < 0)
goto addout;
return 0;
if (!conf->quiet) {
if (op == DM_DEVICE_RELOAD)
@ -661,18 +692,15 @@ add_map(struct env * conf, struct path * all_paths,
mp[index].wwid, mp[index].size, DM_TARGET, params);
}
if (!dm_task_add_target(dmt, 0, mp[index].size, DM_TARGET, params))
goto addout;
if (op == DM_DEVICE_RELOAD)
dm_simplecmd(DM_DEVICE_SUSPEND, mp[index].wwid);
if (!dm_task_run(dmt))
goto addout;
dm_addmap(op, mp[index].wwid, params, mp[index].size);
if (op == DM_DEVICE_RELOAD)
dm_simplecmd(DM_DEVICE_RESUME, mp[index].wwid);
make_dm_node(mp[index].wwid);
addout:
dm_task_destroy(dmt);
return 1;
}
static int
@ -802,9 +830,9 @@ main(int argc, char *argv[])
for (k=0; k<=nmp; k++) {
if (map_present(mp[k].wwid)) {
add_map(&conf, all_paths, mp, k, DM_DEVICE_RELOAD);
setup_map(&conf, all_paths, mp, k, DM_DEVICE_RELOAD);
} else {
add_map(&conf, all_paths, mp, k, DM_DEVICE_CREATE);
setup_map(&conf, all_paths, mp, k, DM_DEVICE_CREATE);
}
}