[dm-devel] [PATCH 10/42] Introduce MP_FAST_IO_FAIL_UNSET
Hannes Reinecke
hare at suse.de
Tue Jan 8 13:53:48 UTC 2013
For completeness; all other special values are encoded with
defines, so 'unset' should be, too.
Signed-off-by: Hannes Reinecke <hare at suse.de>
---
libmultipath/config.h | 1 +
libmultipath/dict.c | 8 ++++----
libmultipath/discovery.c | 6 +++---
libmultipath/propsel.c | 6 +++---
libmultipath/structs.c | 1 +
5 files changed, 12 insertions(+), 10 deletions(-)
diff --git a/libmultipath/config.h b/libmultipath/config.h
index 16f530f..51fc492 100644
--- a/libmultipath/config.h
+++ b/libmultipath/config.h
@@ -11,6 +11,7 @@
* In kernel, fast_io_fail == 0 means immediate failure on rport delete.
* OTOH '0' means not-configured in various places in multipath-tools.
*/
+#define MP_FAST_IO_FAIL_UNSET (0)
#define MP_FAST_IO_FAIL_OFF (-1)
#define MP_FAST_IO_FAIL_ZERO (-2)
diff --git a/libmultipath/dict.c b/libmultipath/dict.c
index fe1362e..ab9fdeb 100644
--- a/libmultipath/dict.c
+++ b/libmultipath/dict.c
@@ -47,7 +47,7 @@ def_fast_io_fail_handler(vector strvec)
conf->fast_io_fail = MP_FAST_IO_FAIL_OFF;
else if (sscanf(buff, "%d", &conf->fast_io_fail) != 1 ||
conf->fast_io_fail < MP_FAST_IO_FAIL_ZERO)
- conf->fast_io_fail = 0;
+ conf->fast_io_fail = MP_FAST_IO_FAIL_UNSET;
else if (conf->fast_io_fail == 0)
conf->fast_io_fail = MP_FAST_IO_FAIL_ZERO;
@@ -882,7 +882,7 @@ hw_fast_io_fail_handler(vector strvec)
hwe->fast_io_fail = MP_FAST_IO_FAIL_OFF;
else if (sscanf(buff, "%d", &hwe->fast_io_fail) != 1 ||
hwe->fast_io_fail < MP_FAST_IO_FAIL_ZERO)
- hwe->fast_io_fail = 0;
+ hwe->fast_io_fail = MP_FAST_IO_FAIL_UNSET;
else if (hwe->fast_io_fail == 0)
hwe->fast_io_fail = MP_FAST_IO_FAIL_ZERO;
@@ -1973,7 +1973,7 @@ static int
snprint_hw_fast_io_fail(char * buff, int len, void * data)
{
struct hwentry * hwe = (struct hwentry *)data;
- if (!hwe->fast_io_fail)
+ if (hwe->fast_io_fail == MP_FAST_IO_FAIL_UNSET)
return 0;
if (hwe->fast_io_fail == conf->fast_io_fail)
return 0;
@@ -2282,7 +2282,7 @@ snprint_def_polling_interval (char * buff, int len, void * data)
static int
snprint_def_fast_io_fail(char * buff, int len, void * data)
{
- if (!conf->fast_io_fail)
+ if (conf->fast_io_fail == MP_FAST_IO_FAIL_UNSET)
return 0;
if (conf->fast_io_fail == MP_FAST_IO_FAIL_OFF)
return snprintf(buff, len, "off");
diff --git a/libmultipath/discovery.c b/libmultipath/discovery.c
index 6f5470f..e328332 100644
--- a/libmultipath/discovery.c
+++ b/libmultipath/discovery.c
@@ -283,7 +283,7 @@ sysfs_set_rport_tmo(struct multipath *mpp, struct path *pp)
snprintf(value, 11, "%u", mpp->dev_loss);
if (mpp->dev_loss &&
sysfs_attr_set_value(rport_dev, "dev_loss_tmo", value, 11) <= 0) {
- if ((!mpp->fast_io_fail ||
+ if ((mpp->fast_io_fail == MP_FAST_IO_FAIL_UNSET ||
mpp->fast_io_fail == MP_FAST_IO_FAIL_OFF)
&& mpp->dev_loss > 600) {
condlog(3, "%s: limiting dev_loss_tmo to 600, since "
@@ -296,7 +296,7 @@ sysfs_set_rport_tmo(struct multipath *mpp, struct path *pp)
goto out;
}
}
- if (mpp->fast_io_fail){
+ if (mpp->fast_io_fail != MP_FAST_IO_FAIL_UNSET){
if (mpp->fast_io_fail == MP_FAST_IO_FAIL_OFF)
sprintf(value, "off");
else if (mpp->fast_io_fail == MP_FAST_IO_FAIL_ZERO)
@@ -340,7 +340,7 @@ sysfs_set_scsi_tmo (struct multipath *mpp)
mpp->alias, mpp->fast_io_fail);
mpp->fast_io_fail = MP_FAST_IO_FAIL_OFF;
}
- if (!mpp->dev_loss && !mpp->fast_io_fail)
+ if (!mpp->dev_loss && mpp->fast_io_fail == MP_FAST_IO_FAIL_UNSET)
return 0;
vector_foreach_slot(mpp->paths, pp, i) {
diff --git a/libmultipath/propsel.c b/libmultipath/propsel.c
index 17bd893..756aced 100644
--- a/libmultipath/propsel.c
+++ b/libmultipath/propsel.c
@@ -558,7 +558,7 @@ select_pg_timeout(struct multipath *mp)
extern int
select_fast_io_fail(struct multipath *mp)
{
- if (mp->hwe && mp->hwe->fast_io_fail) {
+ if (mp->hwe && mp->hwe->fast_io_fail != MP_FAST_IO_FAIL_UNSET) {
mp->fast_io_fail = mp->hwe->fast_io_fail;
if (mp->fast_io_fail == MP_FAST_IO_FAIL_OFF)
condlog(3, "%s: fast_io_fail_tmo = off (controller default)", mp->alias);
@@ -567,7 +567,7 @@ select_fast_io_fail(struct multipath *mp)
mp->fast_io_fail == MP_FAST_IO_FAIL_ZERO ? 0 : mp->fast_io_fail);
return 0;
}
- if (conf->fast_io_fail) {
+ if (conf->fast_io_fail != MP_FAST_IO_FAIL_UNSET) {
mp->fast_io_fail = conf->fast_io_fail;
if (mp->fast_io_fail == MP_FAST_IO_FAIL_OFF)
condlog(3, "%s: fast_io_fail_tmo = off (config file default)", mp->alias);
@@ -576,7 +576,7 @@ select_fast_io_fail(struct multipath *mp)
mp->fast_io_fail == MP_FAST_IO_FAIL_ZERO ? 0 : mp->fast_io_fail);
return 0;
}
- mp->fast_io_fail = 0;
+ mp->fast_io_fail = MP_FAST_IO_FAIL_UNSET;
return 0;
}
diff --git a/libmultipath/structs.c b/libmultipath/structs.c
index ab57559..88e8706 100644
--- a/libmultipath/structs.c
+++ b/libmultipath/structs.c
@@ -131,6 +131,7 @@ alloc_multipath (void)
mpp->bestpg = 1;
mpp->mpcontext = NULL;
mpp->no_path_retry = NO_PATH_RETRY_UNDEF;
+ mpp->fast_io_fail = MP_FAST_IO_FAIL_UNSET;
}
return mpp;
}
--
1.7.4.2
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