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[RFC,v1,3/8] scsi: Add error handling capability for multipath

Message ID 20241109044529.992935-4-himanshu.madhani@oracle.com (mailing list archive)
State New
Headers show
Series scsi: Multipath support for scsi disk devices. | expand

Commit Message

Himanshu Madhani Nov. 9, 2024, 4:45 a.m. UTC 
From: Himanshu Madhani <himanshu.madhani@oracle.com>

For multipath capable devices call scsi_mpath_failover_disposition() to
kick off failover to another path. This will call path selector
algorithm to pick active path for the failover.

Signed-off-by: Himanshu Madhani <himanshu.madhani@oracle.com>
---
 drivers/scsi/scsi_error.c | 8 ++++++++
 1 file changed, 8 insertions(+)
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Patch

diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 612489afe8d2..d5d1b20928a6 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -40,6 +40,7 @@ 
 #include <scsi/scsi_ioctl.h>
 #include <scsi/scsi_dh.h>
 #include <scsi/scsi_devinfo.h>
+#include <scsi/scsi_multipath.h>
 #include <scsi/sg.h>
 
 #include "scsi_priv.h"
@@ -2047,6 +2048,13 @@  enum scsi_disposition scsi_decide_disposition(struct scsi_cmnd *scmd)
 
 maybe_retry:
 
+	/*
+	 * For SCSI Multipath check if there are path errors to
+	 * trigger failover to available path
+	 */
+	if (scsi_mpath_enabled(scmd->device))
+		return scsi_mpath_failover_disposition(scmd);
+
 	/* we requeue for retry because the error was retryable, and
 	 * the request was not marked fast fail.  Note that above,
 	 * even if the request is marked fast fail, we still requeue