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[PATCH] dm: improve error message consistency

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Tidy device-mapper error messages to include context information
automatically.

Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Alasdair G Kergon
2006-06-26 00:27:35 -07:00
committed by Linus Torvalds
parent 5c6bd75d06
commit 72d9486169
17 changed files with 142 additions and 112 deletions
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43
drivers/md/dm-mpath.c
View File

@@ -21,6 +21,7 @@
#include <linux/workqueue.h>
#include <asm/atomic.h>
#define DM_MSG_PREFIX "multipath"
#define MESG_STR(x) x, sizeof(x)
/* Path properties */
@@ -446,8 +447,6 @@ struct param {
char *error;
};
#define ESTR(s) ("dm-multipath: " s)
static int read_param(struct param *param, char *str, unsigned *v, char **error)
{
if (!str ||
@@ -495,12 +494,12 @@ static int parse_path_selector(struct arg_set *as, struct priority_group *pg,
unsigned ps_argc;
static struct param _params[] = {
{0, 1024, ESTR("invalid number of path selector args")},
{0, 1024, "invalid number of path selector args"},
};
pst = dm_get_path_selector(shift(as));
if (!pst) {
ti->error = ESTR("unknown path selector type");
ti->error = "unknown path selector type";
return -EINVAL;
}
@@ -511,7 +510,7 @@ static int parse_path_selector(struct arg_set *as, struct priority_group *pg,
r = pst->create(&pg->ps, ps_argc, as->argv);
if (r) {
dm_put_path_selector(pst);
ti->error = ESTR("path selector constructor failed");
ti->error = "path selector constructor failed";
return r;
}
@@ -529,7 +528,7 @@ static struct pgpath *parse_path(struct arg_set *as, struct path_selector *ps,
/* we need at least a path arg */
if (as->argc < 1) {
ti->error = ESTR("no device given");
ti->error = "no device given";
return NULL;
}
@@ -540,7 +539,7 @@ static struct pgpath *parse_path(struct arg_set *as, struct path_selector *ps,
r = dm_get_device(ti, shift(as), ti->begin, ti->len,
dm_table_get_mode(ti->table), &p->path.dev);
if (r) {
ti->error = ESTR("error getting device");
ti->error = "error getting device";
goto bad;
}
@@ -562,8 +561,8 @@ static struct priority_group *parse_priority_group(struct arg_set *as,
struct dm_target *ti)
{
static struct param _params[] = {
{1, 1024, ESTR("invalid number of paths")},
{0, 1024, ESTR("invalid number of selector args")}
{1, 1024, "invalid number of paths"},
{0, 1024, "invalid number of selector args"}
};
int r;
@@ -572,13 +571,13 @@ static struct priority_group *parse_priority_group(struct arg_set *as,
if (as->argc < 2) {
as->argc = 0;
ti->error = ESTR("not enough priority group aruments");
ti->error = "not enough priority group aruments";
return NULL;
}
pg = alloc_priority_group();
if (!pg) {
ti->error = ESTR("couldn't allocate priority group");
ti->error = "couldn't allocate priority group";
return NULL;
}
pg->m = m;
@@ -633,7 +632,7 @@ static int parse_hw_handler(struct arg_set *as, struct multipath *m,
unsigned hw_argc;
static struct param _params[] = {
{0, 1024, ESTR("invalid number of hardware handler args")},
{0, 1024, "invalid number of hardware handler args"},
};
r = read_param(_params, shift(as), &hw_argc, &ti->error);
@@ -645,14 +644,14 @@ static int parse_hw_handler(struct arg_set *as, struct multipath *m,
hwht = dm_get_hw_handler(shift(as));
if (!hwht) {
ti->error = ESTR("unknown hardware handler type");
ti->error = "unknown hardware handler type";
return -EINVAL;
}
r = hwht->create(&m->hw_handler, hw_argc - 1, as->argv);
if (r) {
dm_put_hw_handler(hwht);
ti->error = ESTR("hardware handler constructor failed");
ti->error = "hardware handler constructor failed";
return r;
}
@@ -669,7 +668,7 @@ static int parse_features(struct arg_set *as, struct multipath *m,
unsigned argc;
static struct param _params[] = {
{0, 1, ESTR("invalid number of feature args")},
{0, 1, "invalid number of feature args"},
};
r = read_param(_params, shift(as), &argc, &ti->error);
@@ -692,8 +691,8 @@ static int multipath_ctr(struct dm_target *ti, unsigned int argc,
{
/* target parameters */
static struct param _params[] = {
{1, 1024, ESTR("invalid number of priority groups")},
{1, 1024, ESTR("invalid initial priority group number")},
{1, 1024, "invalid number of priority groups"},
{1, 1024, "invalid initial priority group number"},
};
int r;
@@ -707,7 +706,7 @@ static int multipath_ctr(struct dm_target *ti, unsigned int argc,
m = alloc_multipath();
if (!m) {
ti->error = ESTR("can't allocate multipath");
ti->error = "can't allocate multipath";
return -EINVAL;
}
@@ -746,7 +745,7 @@ static int multipath_ctr(struct dm_target *ti, unsigned int argc,
}
if (pg_count != m->nr_priority_groups) {
ti->error = ESTR("priority group count mismatch");
ti->error = "priority group count mismatch";
r = -EINVAL;
goto bad;
}
@@ -807,7 +806,7 @@ static int fail_path(struct pgpath *pgpath)
if (!pgpath->path.is_active)
goto out;
DMWARN("dm-multipath: Failing path %s.", pgpath->path.dev->name);
DMWARN("Failing path %s.", pgpath->path.dev->name);
pgpath->pg->ps.type->fail_path(&pgpath->pg->ps, &pgpath->path);
pgpath->path.is_active = 0;
@@ -1250,7 +1249,7 @@ static int multipath_message(struct dm_target *ti, unsigned argc, char **argv)
r = dm_get_device(ti, argv[1], ti->begin, ti->len,
dm_table_get_mode(ti->table), &dev);
if (r) {
DMWARN("dm-multipath message: error getting device %s",
DMWARN("message: error getting device %s",
argv[1]);
return -EINVAL;
}
@@ -1309,7 +1308,7 @@ static int __init dm_multipath_init(void)
return -ENOMEM;
}
DMINFO("dm-multipath version %u.%u.%u loaded",
DMINFO("version %u.%u.%u loaded",
multipath_target.version[0], multipath_target.version[1],
multipath_target.version[2]);