target: Change default sense key of NOT_READY
As the comment sais, this allows Solaris initiators to survive
intermittent errors. The comment from someone reading the Solaris
sources seem to imply that multipathing would be broken without this
patch as well.
Signed-off-by: Joern Engel <joern@logfs.org>
Cc: Brian Bunker <brian@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 3243ea7..493e9e5 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -2765,8 +2765,13 @@
/* CURRENT ERROR */
buffer[0] = 0x70;
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
- /* ILLEGAL REQUEST */
- buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
+ /*
+ * Returning ILLEGAL REQUEST would cause immediate IO errors on
+ * Solaris initiators. Returning NOT READY instead means the
+ * operations will be retried a finite number of times and we
+ * can survive intermittent errors.
+ */
+ buffer[SPC_SENSE_KEY_OFFSET] = NOT_READY;
/* LOGICAL UNIT COMMUNICATION FAILURE */
buffer[SPC_ASC_KEY_OFFSET] = 0x08;
break;