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

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commit cf55f4a8b6 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Mike Sterling
2011-09-06 16:10:55 -07:00
committed by Greg Kroah-Hartman
parent 19993a56ee
commit 2ef6c9968b
2 changed files with 3 additions and 0 deletions
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1
drivers/staging/hv/hyperv_storage.h
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@@ -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;

2
drivers/staging/hv/storvsc_drv.c
View File

@@ -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);