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Go Back   Linux Archive > Redhat > Device-mapper Development

 
 
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Old 05-23-2012, 08:36 PM
Benjamin Marzinski
 
Default multipath: Allow user_friendly_names in more config sections

This patch adds support for setting user_friendly_names in the devices and
multipaths config sections.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
---
libmultipath/config.c | 2 +
libmultipath/config.h | 2 +
libmultipath/dict.c | 94 +++++++++++++++++++++++++++++++++++++++++++++----
libmultipath/propsel.c | 14 ++++++-
libmultipath/structs.h | 6 +++
5 files changed, 110 insertions(+), 8 deletions(-)

Index: multipath-tools-120518/libmultipath/config.c
================================================== =================
--- multipath-tools-120518.orig/libmultipath/config.c
+++ multipath-tools-120518/libmultipath/config.c
@@ -325,6 +325,7 @@ merge_hwe (struct hwentry * dst, struct
merge_num(flush_on_last_del);
merge_num(fast_io_fail);
merge_num(dev_loss);
+ merge_num(user_friendly_names);

return 0;
}
@@ -383,6 +384,7 @@ store_hwe (vector hwtable, struct hwentr
hwe->flush_on_last_del = dhwe->flush_on_last_del;
hwe->fast_io_fail = dhwe->fast_io_fail;
hwe->dev_loss = dhwe->dev_loss;
+ hwe->user_friendly_names = dhwe->user_friendly_names;

if (dhwe->bl_product && !(hwe->bl_product = set_param_str(dhwe->bl_product)))
goto out;
Index: multipath-tools-120518/libmultipath/config.h
================================================== =================
--- multipath-tools-120518.orig/libmultipath/config.h
+++ multipath-tools-120518/libmultipath/config.h
@@ -44,6 +44,7 @@ struct hwentry {
int flush_on_last_del;
int fast_io_fail;
unsigned int dev_loss;
+ int user_friendly_names;
char * bl_product;
};

@@ -66,6 +67,7 @@ struct mpentry {
int pg_timeout;
int flush_on_last_del;
int attribute_flags;
+ int user_friendly_names;
uid_t uid;
gid_t gid;
mode_t mode;
Index: multipath-tools-120518/libmultipath/dict.c
================================================== =================
--- multipath-tools-120518.orig/libmultipath/dict.c
+++ multipath-tools-120518/libmultipath/dict.c
@@ -583,7 +583,7 @@ def_reservation_key_handler(vector strve
}

static int
-names_handler(vector strvec)
+def_names_handler(vector strvec)
{
char * buff;

@@ -594,10 +594,12 @@ names_handler(vector strvec)

if ((strlen(buff) == 2 && !strcmp(buff, "no")) ||
(strlen(buff) == 1 && !strcmp(buff, "0")))
- conf->user_friendly_names = 0;
+ conf->user_friendly_names = USER_FRIENDLY_NAMES_OFF;
else if ((strlen(buff) == 3 && !strcmp(buff, "yes")) ||
(strlen(buff) == 1 && !strcmp(buff, "1")))
- conf->user_friendly_names = 1;
+ conf->user_friendly_names = USER_FRIENDLY_NAMES_ON;
+ else
+ conf->user_friendly_names = USER_FRIENDLY_NAMES_UNDEF;

FREE(buff);
return 0;
@@ -1207,6 +1209,32 @@ hw_flush_on_last_del_handler(vector strv
return 0;
}

+static int
+hw_names_handler(vector strvec)
+{
+ struct hwentry *hwe = VECTOR_LAST_SLOT(conf->hwtable);
+ char * buff;
+
+ if (!hwe)
+ return 1;
+
+ buff = set_value(strvec);
+ if (!buff)
+ return 1;
+
+ if ((strlen(buff) == 2 && strcmp(buff, "no") == 0) ||
+ (strlen(buff) == 1 && strcmp(buff, "0") == 0))
+ hwe->user_friendly_names = USER_FRIENDLY_NAMES_OFF;
+ else if ((strlen(buff) == 3 && strcmp(buff, "yes") == 0) ||
+ (strlen(buff) == 1 && strcmp(buff, "1") == 0))
+ hwe->user_friendly_names = USER_FRIENDLY_NAMES_ON;
+ else
+ hwe->user_friendly_names = USER_FRIENDLY_NAMES_UNDEF;
+
+ FREE(buff);
+ return 0;
+}
+
/*
* multipaths block handlers
*/
@@ -1654,6 +1682,31 @@ mp_reservation_key_handler (vector strve
return 0;
}

+static int
+mp_names_handler(vector strvec)
+{
+ struct mpentry *mpe = VECTOR_LAST_SLOT(conf->mptable);
+ char * buff;
+
+ if (!mpe)
+ return 1;
+
+ buff = set_value(strvec);
+ if (!buff)
+ return 1;
+
+ if ((strlen(buff) == 2 && strcmp(buff, "no") == 0) ||
+ (strlen(buff) == 1 && strcmp(buff, "0") == 0))
+ mpe->user_friendly_names = USER_FRIENDLY_NAMES_OFF;
+ else if ((strlen(buff) == 3 && strcmp(buff, "yes") == 0) ||
+ (strlen(buff) == 1 && strcmp(buff, "1") == 0))
+ mpe->user_friendly_names = USER_FRIENDLY_NAMES_ON;
+ else
+ mpe->user_friendly_names = USER_FRIENDLY_NAMES_UNDEF;
+
+ FREE(buff);
+ return 0;
+}

/*
* config file keywords printing
@@ -1884,6 +1937,18 @@ snprint_mp_reservation_key (char * buff,
return snprintf(buff, len, "%s" , mpe->reservation_key);
}

+ static int
+snprint_mp_user_friendly_names (char * buff, int len, void * data)
+{
+ struct mpentry * mpe = (struct mpentry *)data;
+
+ if (mpe->user_friendly_names == USER_FRIENDLY_NAMES_UNDEF)
+ return 0;
+ else if (mpe->user_friendly_names == USER_FRIENDLY_NAMES_OFF)
+ return snprintf(buff, len, "no");
+ else
+ return snprintf(buff, len, "yes");
+}

static int
snprint_hw_fast_io_fail(char * buff, int len, void * data)
@@ -2174,6 +2239,19 @@ snprint_hw_path_checker (char * buff, in
return snprintf(buff, len, "%s", hwe->checker_name);
}

+ static int
+snprint_hw_user_friendly_names (char * buff, int len, void * data)
+{
+ struct hwentry * hwe = (struct hwentry *)data;
+
+ if (hwe->user_friendly_names == USER_FRIENDLY_NAMES_UNDEF)
+ return 0;
+ else if (hwe->user_friendly_names == USER_FRIENDLY_NAMES_OFF)
+ return snprintf(buff, len, "no");
+ else
+ return snprintf(buff, len, "yes");
+}
+
static int
snprint_def_polling_interval (char * buff, int len, void * data)
{
@@ -2461,10 +2539,10 @@ snprint_def_log_checker_err (char * buff
static int
snprint_def_user_friendly_names (char * buff, int len, void * data)
{
- if (!conf->user_friendly_names)
+ if (conf->user_friendly_names == USER_FRIENDLY_NAMES_ON)
+ return snprintf(buff, len, "yes");
+ else
return snprintf(buff, len, "no");
-
- return snprintf(buff, len, "yes");
}

static int
@@ -2547,7 +2625,7 @@ init_keywords(void)
install_keyword("checker_timeout", &def_checker_timeout_handler, &snprint_def_checker_timeout);
install_keyword("pg_timeout", &def_pg_timeout_handler, &snprint_def_pg_timeout);
install_keyword("flush_on_last_del", &def_flush_on_last_del_handler, &snprint_def_flush_on_last_del);
- install_keyword("user_friendly_names", &names_handler, &snprint_def_user_friendly_names);
+ install_keyword("user_friendly_names", &def_names_handler, &snprint_def_user_friendly_names);
install_keyword("mode", &def_mode_handler, &snprint_def_mode);
install_keyword("uid", &def_uid_handler, &snprint_def_uid);
install_keyword("gid", &def_gid_handler, &snprint_def_gid);
@@ -2616,6 +2694,7 @@ init_keywords(void)
install_keyword("flush_on_last_del", &hw_flush_on_last_del_handler, &snprint_hw_flush_on_last_del);
install_keyword("fast_io_fail_tmo", &hw_fast_io_fail_handler, &snprint_hw_fast_io_fail);
install_keyword("dev_loss_tmo", &hw_dev_loss_handler, &snprint_hw_dev_loss);
+ install_keyword("user_friendly_names", &hw_names_handler, &snprint_hw_user_friendly_names);
install_sublevel_end();

install_keyword_root("multipaths", &multipaths_handler);
@@ -2639,5 +2718,6 @@ init_keywords(void)
install_keyword("uid", &mp_uid_handler, &snprint_mp_uid);
install_keyword("gid", &mp_gid_handler, &snprint_mp_gid);
install_keyword("reservation_key", &mp_reservation_key_handler, &snprint_mp_reservation_key);
+ install_keyword("user_friendly_names", &mp_names_handler, &snprint_mp_user_friendly_names);
install_sublevel_end();
}
Index: multipath-tools-120518/libmultipath/propsel.c
================================================== =================
--- multipath-tools-120518.orig/libmultipath/propsel.c
+++ multipath-tools-120518/libmultipath/propsel.c
@@ -237,6 +237,18 @@ select_alias_prefix (struct multipath *
mp->wwid, mp->alias_prefix);
}

+static int
+want_user_friendly_names(struct multipath * mp)
+{
+ if (mp->mpe &&
+ mp->mpe->user_friendly_names != USER_FRIENDLY_NAMES_UNDEF)
+ return (mp->mpe->user_friendly_names == USER_FRIENDLY_NAMES_ON);
+ if (mp->hwe &&
+ mp->hwe->user_friendly_names != USER_FRIENDLY_NAMES_UNDEF)
+ return (mp->hwe->user_friendly_names == USER_FRIENDLY_NAMES_ON);
+ return (conf->user_friendly_names == USER_FRIENDLY_NAMES_ON);
+}
+
extern int
select_alias (struct multipath * mp)
{
@@ -244,7 +256,7 @@ select_alias (struct multipath * mp)
mp->alias = STRDUP(mp->mpe->alias);
else {
mp->alias = NULL;
- if (conf->user_friendly_names) {
+ if (want_user_friendly_names(mp)) {
select_alias_prefix(mp);
mp->alias = get_user_friendly_alias(mp->wwid,
conf->bindings_file, mp->alias_prefix, conf->bindings_read_only);
Index: multipath-tools-120518/libmultipath/structs.h
================================================== =================
--- multipath-tools-120518.orig/libmultipath/structs.h
+++ multipath-tools-120518/libmultipath/structs.h
@@ -92,6 +92,12 @@ enum log_checker_err_states {
LOG_CHKR_ERR_ONCE,
};

+enum user_friendly_names_states {
+ USER_FRIENDLY_NAMES_UNDEF,
+ USER_FRIENDLY_NAMES_OFF,
+ USER_FRIENDLY_NAMES_ON,
+};
+
struct scsi_idlun {
int dev_id;
int host_unique_id;

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