Commit cf55f4a8 authored Sep 06, 2011 by Mike Sterling Committed by Greg Kroah-Hartman Sep 06, 2011

Staging: hv: Add support for >2 TB LUN in storage driver.



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>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

parent 15e3276f

drivers/staging/hv/storvsc_drv.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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);

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