[dm-devel] [PATCH v2 01/37] libmultipath: sysfs_set_scsi_tmo: do nothing for ACT_DRY_RUN

[mwilck@suse.com]

From: Martin Wilck <mwilck@suse.com>

"multipath -d" might change sysfs timeouts of SCSI devices.
Make sure it doesn't.

Signed-off-by: Martin Wilck <mwilck@suse.com>
Cc: Jehan Singh <jehan.singh@suse.com>
Reviewed-by: Benjamin Marzinski <bmarzins@redhat.com>
---
 libmultipath/configure.c | 4 ++--
 libmultipath/discovery.c | 3 +++
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/libmultipath/configure.c b/libmultipath/configure.c
index 9513baa..029fbbd 100644
--- a/libmultipath/configure.c
+++ b/libmultipath/configure.c
@@ -1193,13 +1193,13 @@ int coalesce_paths (struct vectors *vecs, vector mpvec, char *refwwid,
 
 		if (cmpp)
 			mpp->queue_mode = cmpp->queue_mode;
+		if (cmd == CMD_DRY_RUN && mpp->action == ACT_UNDEF)
+			mpp->action = ACT_DRY_RUN;
 		if (setup_map(mpp, &params, vecs)) {
 			remove_map(mpp, vecs->pathvec, NULL);
 			continue;
 		}
 
-		if (cmd == CMD_DRY_RUN)
-			mpp->action = ACT_DRY_RUN;
 		if (mpp->action == ACT_UNDEF)
 			select_action(mpp, curmp,
 				      force_reload == FORCE_RELOAD_YES ? 1 : 0);
diff --git a/libmultipath/discovery.c b/libmultipath/discovery.c
index e4de48e..84ce5fe 100644
--- a/libmultipath/discovery.c
+++ b/libmultipath/discovery.c
@@ -857,6 +857,9 @@ sysfs_set_scsi_tmo (struct config *conf, struct multipath *mpp)
 	bool warn_dev_loss = false;
 	bool warn_fast_io_fail = false;
 
+	if (mpp->action == ACT_DRY_RUN || mpp->action == ACT_REJECT)
+		return 0;
+
 	if (mpp->no_path_retry > 0) {
 		uint64_t no_path_retry_tmo =
 			(uint64_t)mpp->no_path_retry * conf->checkint;
-- 
2.42.0

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