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Groups > linux.kernel > #1288731

[PATCH 6/15] scsi xcopy: suppress error messages

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This patch suppresses error messages when copying between two arrays that
support XCOPY each, but that cannot copy data between each other.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>

---
 drivers/scsi/sd.c |   14 ++++++++++++++
 1 file changed, 14 insertions(+)

Index: linux-4.4-rc4/drivers/scsi/sd.c
===================================================================
--- linux-4.4-rc4.orig/drivers/scsi/sd.c	2015-12-07 16:58:48.000000000 +0100
+++ linux-4.4-rc4/drivers/scsi/sd.c	2015-12-07 16:59:09.000000000 +0100
@@ -1995,6 +1995,20 @@ static int sd_done(struct scsi_cmnd *SCp
 					req->cmd_flags |= REQ_QUIET;
 				}
 			}
+		} else if (sshdr.asc == 0x26) {
+			switch (op) {
+			/*
+			 * Copying between two arrays that support XCOPY, but
+			 * cannot access each other.
+			 */
+			case EXTENDED_COPY:
+				if ((SCpnt->cmnd[1] & 0x1f) == 0) {
+					good_bytes = 0;
+					req->__data_len = blk_rq_bytes(req);
+					req->cmd_flags |= REQ_QUIET;
+				}
+				break;
+			}
 		}
 		break;
 	default:

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Thread

[PATCH 0/15] copy offload patches Mikulas Patocka <mpatocka@redhat.com> - 2015-12-10 18:40 +0100
  [PATCH 7/15] scsi xcopy: keep cache of failures Mikulas Patocka <mpatocka@redhat.com> - 2015-12-10 18:40 +0100
  [PATCH 5/15] block copy: use asynchronous notification Mikulas Patocka <mpatocka@redhat.com> - 2015-12-10 18:40 +0100
  [PATCH 6/15] scsi xcopy: suppress error messages Mikulas Patocka <mpatocka@redhat.com> - 2015-12-10 18:40 +0100
  [PATCH 4/15] block copy: use a timer to fix a theoretical deadlock Mikulas Patocka <mpatocka@redhat.com> - 2015-12-10 18:40 +0100
  [PATCH 14/15] dm kcopyd: change mutex to spinlock Mikulas Patocka <mpatocka@redhat.com> - 2015-12-10 18:40 +0100
  [PATCH 9/15] dm: implement copy Mikulas Patocka <mpatocka@redhat.com> - 2015-12-10 18:40 +0100
  [PATCH 1/15] block copy: initial XCOPY offload support Mikulas Patocka <mpatocka@redhat.com> - 2015-12-10 18:40 +0100
  [PATCH 12/15] dm kcopyd: introduce the function submit_job Mikulas Patocka <mpatocka@redhat.com> - 2015-12-10 18:40 +0100
  Re: [PATCH 0/15] copy offload patches "Martin K. Petersen" <martin.petersen@oracle.com> - 2015-12-10 23:40 +0100
    Re: [dm-devel] [PATCH 0/15] copy offload patches Mike Christie <michaelc@cs.wisc.edu> - 2015-12-11 06:10 +0100
      Re: [dm-devel] [PATCH 0/15] copy offload patches Christoph Hellwig <hch@infradead.org> - 2015-12-11 21:00 +0100

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