From: Moger, Babu This patch adds two minor fixes while processing device mapper path activation. 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. Change the misleading message if the path being activated fails with SCSI_DH_NOSYS. Signed-off-by: Babu Moger Signed-off-by: Alasdair G Kergon --- drivers/md/dm-mpath.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) Index: linux-2.6.33-rc8/drivers/md/dm-mpath.c =================================================================== --- linux-2.6.33-rc8.orig/drivers/md/dm-mpath.c +++ linux-2.6.33-rc8/drivers/md/dm-mpath.c @@ -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++; } @@ -1142,8 +1145,8 @@ 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 */