Add blist flags to permit the reading of the VPD pages even when
the target may claim SPC-2 compliance. MSFT targets currently
claim SPC-2 compliance while they implement post SPC-2 features.
With this patch we can correctly handle WRITE_SAME_16 issues.
Signed-off-by: K. Y. Srinivasan <k...@microsoft.com>
---
drivers/scsi/storvsc_drv.c | 13 +++++++++++++
1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 29d0329..2a58dc4 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -42,6 +42,7 @@
#include <scsi/scsi_eh.h>
#include <scsi/scsi_devinfo.h>
#include <scsi/scsi_dbg.h>
+#include "scsi_priv.h"
/*
* All wire protocol details (storage protocol between the guest and the host)
@@ -327,6 +328,8 @@ MODULE_PARM_DESC(storvsc_ringbuffer_size, "Ring buffer size
(bytes)");
*/
static int storvsc_timeout = 180;
+static int msft_blist_flags = BLIST_TRY_VPD_PAGES;
+
#define STORVSC_MAX_IO_REQUESTS 200
static void storvsc_on_channel_callback(void *context);
@@ -1438,6 +1441,8 @@ static void storvsc_device_destroy(struct scsi_device
*sdevice)
static int storvsc_device_configure(struct scsi_device *sdevice)
{
+ int blist_flags;
+
scsi_adjust_queue_depth(sdevice, MSG_SIMPLE_TAG,
STORVSC_MAX_IO_REQUESTS);
@@ -1449,6 +1454,14 @@ static int storvsc_device_configure(struct scsi_device
*sdevice)
sdevice->no_write_same = 1;
+ blist_flags = scsi_get_device_flags_keyed(sdevice, "Msft",
+ "Virtual Disk",
+ SCSI_DEVINFO_GLOBAL);
+
+ if (blist_flags != msft_blist_flags)
+ scsi_dev_info_list_add_keyed(1, "Msft", "Virtual Disk", NULL,
+ msft_blist_flags,
+ SCSI_DEVINFO_GLOBAL);
return 0;
}
--
1.7.4.1
--
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