Useful for cases where a hw handler sends a path initialization command to
the storage and it completes with an error code indicating the command should
be retried.
Signed-off-by: Dave Wysochanski <dave.wysochanski@xxxxxxxxxx>
Signed-off-by: Mike Christie <michaelc@xxxxxxxxxxx>
--
Index: linux-2.6.22-rc1/drivers/md/dm-hw-handler.h
===================================================================
--- linux-2.6.22-rc1.orig/drivers/md/dm-hw-handler.h
+++ linux-2.6.22-rc1/drivers/md/dm-hw-handler.h
@@ -58,5 +58,6 @@ unsigned dm_scsi_err_handler(struct hw_h
#define MP_FAIL_PATH 1
#define MP_BYPASS_PG 2
#define MP_ERROR_IO 4 /* Don't retry this I/O */
+#define MP_RETRY_PG_INIT 8
#endif
Index: linux-2.6.22-rc1/drivers/md/dm-mpath.c
===================================================================
--- linux-2.6.22-rc1.orig/drivers/md/dm-mpath.c
+++ linux-2.6.22-rc1/drivers/md/dm-mpath.c
@@ -999,7 +999,9 @@ void dm_pg_init_complete(struct dm_path
bypass_pg(m, pg, 1);
spin_lock_irqsave(&m->lock, flags);
- if (err_flags) {
+ if (err_flags & MP_RETRY_PG_INIT)
+ m->pg_init_required = 1;
+ else if (err_flags) {
m->current_pgpath = NULL;
m->current_pg = NULL;
} else if (!m->pg_init_required)
--
--
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