The update_map will frequently be called and there will be
unnecessary checks of reseravtion. We add prflag to path
to avoid this.
The pp->state changes from others to up or ghost, the
mpath_pr_event_handle should be called. The
mpath_pr_event_handle in ev_add_path may not be called,
so set pp->prkey PRKEY_NO when path is removed.
Fix: 4db4fa
Signed-off-by: Lixiaokeng <lixiaokeng>
---
libmpathpersist/mpath_persist.c | 2 +-
libmultipath/structs.c | 1 +
libmultipath/structs.h | 12 ++++++++++++
multipathd/cli_handlers.c | 15 ++++++++++-----
multipathd/main.c | 5 +++--
5 files changed, 27 insertions(+), 8 deletions(-)
diff --git a/libmpathpersist/mpath_persist.c b/libmpathpersist/mpath_persist.c
index 803a2a28..f88a2e89 100644
--- a/libmpathpersist/mpath_persist.c
+++ b/libmpathpersist/mpath_persist.c
@@ -924,7 +924,7 @@ int update_map_pr(struct multipath *mpp)
if (isFound)
{
- mpp->prflag = 1;
+ mpp->prflag = PRFLAG_OK;
condlog(2, "%s: prflag flag set.", mpp->alias );
}
diff --git a/libmultipath/structs.c b/libmultipath/structs.c
index e8cacb4b..82dbd565 100644
--- a/libmultipath/structs.c
+++ b/libmultipath/structs.c
@@ -122,6 +122,7 @@ uninitialize_path(struct path *pp)
pp->dmstate = PSTATE_UNDEF;
pp->uid_attribute = NULL;
pp->getuid = NULL;
+ pp->prflag = PRFLAG_NO;
if (checker_selected(&pp->checker))
checker_put(&pp->checker);
diff --git a/libmultipath/structs.h b/libmultipath/structs.h
index 399540e7..5b77218b 100644
--- a/libmultipath/structs.h
+++ b/libmultipath/structs.h
@@ -249,6 +249,17 @@ enum recheck_wwid_states {
RECHECK_WWID_ON = YNU_YES,
};
+/*
+ * PRFLAG_NO for path, it means reservation should be checked.
+ * PRFLAG_NO for multipath, it means mpp has no prkey.
+ * PRFLAG_OK for path, it means reservation has been checked.
+ * PRFLAG_OK for multipath, it means mpp has prkey.
+ */
+enum prflag_states {
+ PRFLAG_NO = 0,
+ PRFLAG_OK = 1,
+};
+
struct vpd_vendor_page {
int pg;
const char *name;
@@ -327,6 +338,7 @@ struct path {
/* configlet pointers */
vector hwe;
struct gen_path generic_path;
+ int prflag;
};
typedef int (pgpolicyfn) (struct multipath *, vector);
diff --git a/multipathd/cli_handlers.c b/multipathd/cli_handlers.c
index 6d3a0ae2..8662fad7 100644
--- a/multipathd/cli_handlers.c
+++ b/multipathd/cli_handlers.c
@@ -1341,7 +1341,7 @@ cli_setprstatus(void * v, char ** reply, int * len, void
* data)
return 1;
if (!mpp->prflag) {
- mpp->prflag = 1;
+ mpp->prflag = PRFLAG_OK;
condlog(2, "%s: prflag set", param);
}
@@ -1352,9 +1352,11 @@ cli_setprstatus(void * v, char ** reply, int * len, void
* data)
int
cli_unsetprstatus(void * v, char ** reply, int * len, void * data)
{
- struct multipath * mpp;
- struct vectors * vecs = (struct vectors *)data;
- char * param = get_keyparam(v, MAP);
+ int i;
+ struct multipath *mpp;
+ struct path *pp;
+ struct vectors *vecs = (struct vectors *)data;
+ char *param = get_keyparam(v, MAP);
param = convert_dev(param, 0);
get_path_layout(vecs->pathvec, 0);
@@ -1364,7 +1366,10 @@ cli_unsetprstatus(void * v, char ** reply, int * len,
void * data)
return 1;
if (mpp->prflag) {
- mpp->prflag = 0;
+ mpp->prflag = PRFLAG_NO;
+ vector_foreach_slot(mpp->paths, pp, i) {
+ pp->prflag = PRFLAG_NO;
+ }
condlog(2, "%s: prflag unset", param);
}
diff --git a/multipathd/main.c b/multipathd/main.c
index 82ab3ed1..6ef6495b 100644
--- a/multipathd/main.c
+++ b/multipathd/main.c
@@ -506,7 +506,7 @@ retry:
if (mpp->prflag) {
vector_foreach_slot(mpp->paths, pp, i) {
- if ((pp->state == PATH_UP) || (pp->state ==
PATH_GHOST)) {
+ if (!pp->prflag && ((pp->state == PATH_UP) ||
(pp->state == PATH_GHOST))) {
/* persistent reseravtion check*/
mpath_pr_event_handle(pp);
}
@@ -3570,7 +3570,8 @@ void * mpath_pr_event_handler_fn (void * pathp )
{
condlog(0,"%s: Reservation registration failed. Error: %d",
pp->dev, ret);
}
- mpp->prflag = 1;
+ mpp->prflag = PRFLAG_OK;
+ pp->prflag = PRFLAG_OK;
free(param);
out:
--
--
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