This patch adds two minor fixes while processing device mapper path activation.
1. Skip failed paths while calling activate_path.
If the path is already failed then activate_path will fail for sure. We
don't have to call in that case. In some case this might cause prolonged retries unnecessarily.
2. changed the mis-leading message if the activate path fails with SCSI_DH_NOSYS.
Signed-off-by: Babu Moger <babu.moger@xxxxxxx>
---
--- linux-2.6.33-rc2/drivers/md/dm-mpath.c.orig 2010-01-15 15:04:37.000000000 -0400
+++ linux-2.6.33-rc2/drivers/md/dm-mpath.c 2010-01-15 15:11:48.000000000 -0400
@@ -461,6 +461,9 @@ static void process_queued_ios(struct wo
m->pg_init_count++;
m->pg_init_required = 0;
list_for_each_entry(tmp, &pgpath->pg->pgpaths, list) {
+ /* Skip failed paths */
+ if (!tmp->is_active)
+ continue;
if (queue_work(kmpath_handlerd, &tmp->activate_path))
m->pg_init_in_progress++;
}
@@ -1143,8 +1146,8 @@ static void pg_init_done(void *data, int
errors = 0;
break;
}
- DMERR("Cannot failover device because scsi_dh_%s was not "
- "loaded.", m->hw_handler_name);
+ DMERR("Could not failover the device, Handler scsi_dh_%s "
+ "Error %d.", m->hw_handler_name, errors);
/*
* Fail path for now, so we do not ping pong
*/
--
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