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* [PATCH 1/1] staging: hv: Add support for >2 TB LUN in storage driver.
@ 2011-09-01 22:11 Mike Sterling
  2011-09-01 22:22 ` Greg KH
  2011-09-06 19:06 ` Greg KH
  0 siblings, 2 replies; 9+ messages in thread
From: Mike Sterling @ 2011-09-01 22:11 UTC (permalink / raw)
  To: haiyangz, hjanssen, kys, gregkh, linux-kernel, devel, virtualization
  Cc: Mike Sterling

If a LUN larger than 2 TB is attached to a Linux VM on Hyper-V, we currently 
report a maximum size of 2 TB. This patch resolves the issue in hv_storvsc. 
Thanks to Robert Scheck <robert.scheck@etes.de> for reporting the issue.

Reported-by: Robert Scheck <robert.scheck@etes.de>
Signed-off-by: Mike Sterling <mike.sterling@microsoft.com>
Signed-off-by: K.Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
---
 drivers/staging/hv/hyperv_storage.h |    1 +
 drivers/staging/hv/storvsc_drv.c    |    2 ++
 2 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/hv/hyperv_storage.h b/drivers/staging/hv/hyperv_storage.h
index a01f9a0..5af82f4 100644
--- a/drivers/staging/hv/hyperv_storage.h
+++ b/drivers/staging/hv/hyperv_storage.h
@@ -218,6 +218,7 @@ struct vstor_packet {
 #define STORVSC_MAX_LUNS_PER_TARGET			64
 #define STORVSC_MAX_TARGETS				1
 #define STORVSC_MAX_CHANNELS				1
+#define STORVSC_MAX_CMD_LEN				16
 
 struct hv_storvsc_request;
 
diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c
index 7effaf3..26983ac 100644
--- a/drivers/staging/hv/storvsc_drv.c
+++ b/drivers/staging/hv/storvsc_drv.c
@@ -701,6 +701,8 @@ static int storvsc_probe(struct hv_device *device)
 	host->max_id = STORVSC_MAX_TARGETS;
 	/* max # of channels */
 	host->max_channel = STORVSC_MAX_CHANNELS - 1;
+	/* max cmd length */
+	host->max_cmd_len = STORVSC_MAX_CMD_LEN;
 
 	/* Register the HBA and start the scsi bus scan */
 	ret = scsi_add_host(host, &device->device);
-- 
1.7.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread
* [PATCH 1/1] Staging: hv: Add support for >2 TB LUN in storage driver.
@ 2011-09-06 23:10 Mike Sterling
  0 siblings, 0 replies; 9+ messages in thread
From: Mike Sterling @ 2011-09-06 23:10 UTC (permalink / raw)
  To: haiyangz, hjanssen, kys, gregkh, linux-kernel, devel, virtualization
  Cc: Mike Sterling

From: Mike Sterling <mike.sterling@microsoft.com> 

If a LUN larger than 2 TB is attached to a Linux VM on Hyper-V, we currently
report a maximum size of 2 TB. This patch resolves the issue in hv_storvsc.
Thanks to Robert Scheck <robert.scheck@etes.de> for reporting the issue.

Reported-by: Robert Scheck <robert.scheck@etes.de>
Signed-off-by: Mike Sterling <mike.sterling@microsoft.com>
Signed-off-by: K.Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
---
 drivers/staging/hv/storvsc_drv.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c
index 3686d10..b0c4e56 100644
--- a/drivers/staging/hv/storvsc_drv.c
+++ b/drivers/staging/hv/storvsc_drv.c
@@ -232,6 +232,7 @@ struct vstor_packet {
 #define STORVSC_MAX_LUNS_PER_TARGET			64
 #define STORVSC_MAX_TARGETS				1
 #define STORVSC_MAX_CHANNELS				1
+#define STORVSC_MAX_CMD_LEN				16
 
 struct hv_storvsc_request;
 
@@ -1440,6 +1441,8 @@ static int storvsc_probe(struct hv_device *device)
 	host->max_id = STORVSC_MAX_TARGETS;
 	/* max # of channels */
 	host->max_channel = STORVSC_MAX_CHANNELS - 1;
+	/* max cmd length */
+	host->max_cmd_len = STORVSC_MAX_CMD_LEN;
 
 	/* Register the HBA and start the scsi bus scan */
 	ret = scsi_add_host(host, &device->device);
-- 
1.7.4.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread
* [PATCH 1/1] staging: hv: Add support for >2 TB LUN in storage driver.
@ 2011-09-01 21:11 Mike Sterling
  2011-09-01 20:59 ` Greg KH
  0 siblings, 1 reply; 9+ messages in thread
From: Mike Sterling @ 2011-09-01 21:11 UTC (permalink / raw)
  To: devel, virtualization, gregkh, linux-kernel
  Cc: Mike Sterling, K.Y. Srinivasan, Haiyang Zhang

If a LUN larger than 2 TB is attached to a Linux VM on Hyper-V, we currently 
report a maximum size of 2 TB. This patch resolves the issue in hv_storvsc. 
Thanks to Robert Scheck <robert.scheck@etes.de> for reporting the issue.

Signed-off-by: Mike Sterling <mike.sterling@microsoft.com>
Signed-off-by: K.Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
---
 drivers/staging/hv/hyperv_storage.h |    1 +
 drivers/staging/hv/storvsc_drv.c    |    2 ++
 2 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/hv/hyperv_storage.h b/drivers/staging/hv/hyperv_storage.h
index a01f9a0..5af82f4 100644
--- a/drivers/staging/hv/hyperv_storage.h
+++ b/drivers/staging/hv/hyperv_storage.h
@@ -218,6 +218,7 @@ struct vstor_packet {
 #define STORVSC_MAX_LUNS_PER_TARGET			64
 #define STORVSC_MAX_TARGETS				1
 #define STORVSC_MAX_CHANNELS				1
+#define STORVSC_MAX_CMD_LEN				16
 
 struct hv_storvsc_request;
 
diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c
index 7effaf3..26983ac 100644
--- a/drivers/staging/hv/storvsc_drv.c
+++ b/drivers/staging/hv/storvsc_drv.c
@@ -701,6 +701,8 @@ static int storvsc_probe(struct hv_device *device)
 	host->max_id = STORVSC_MAX_TARGETS;
 	/* max # of channels */
 	host->max_channel = STORVSC_MAX_CHANNELS - 1;
+	/* max cmd length */
+	host->max_cmd_len = STORVSC_MAX_CMD_LEN;
 
 	/* Register the HBA and start the scsi bus scan */
 	ret = scsi_add_host(host, &device->device);
-- 
1.7.1


^ permalink raw reply related	[flat|nested] 9+ messages in thread
end of thread, other threads:[~2011-09-06 22:50 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2011-09-01 22:11 [PATCH 1/1] staging: hv: Add support for >2 TB LUN in storage driver Mike Sterling
2011-09-01 22:22 ` Greg KH
2011-09-06 15:33   ` Mike Sterling
2011-09-06 19:06 ` Greg KH
2011-09-06 19:14   ` Mike Sterling
2011-09-06 19:14     ` Mike Sterling
  -- strict thread matches above, loose matches on Subject: below --
2011-09-06 23:10 [PATCH 1/1] Staging: " Mike Sterling
2011-09-01 21:11 [PATCH 1/1] staging: " Mike Sterling
2011-09-01 20:59 ` Greg KH

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