| From cf55f4a8b6243b42fb91c56d1421db0d36d60f96 Mon Sep 17 00:00:00 2001 |
| From: Mike Sterling <mike.sterling@microsoft.com> |
| Date: Tue, 6 Sep 2011 16:10:55 -0700 |
| Subject: Staging: hv: Add support for >2 TB LUN in storage driver. |
| |
| From: Mike Sterling <mike.sterling@microsoft.com> |
| |
| commit cf55f4a8b6243b42fb91c56d1421db0d36d60f96 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> |
| |
| --- |
| drivers/staging/hv/hyperv_storage.h | 1 + |
| drivers/staging/hv/storvsc_drv.c | 2 ++ |
| 2 files changed, 3 insertions(+) |
| |
| --- 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; |
| |
| --- a/drivers/staging/hv/storvsc_drv.c |
| +++ b/drivers/staging/hv/storvsc_drv.c |
| @@ -701,6 +701,8 @@ static int storvsc_probe(struct hv_devic |
| 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); |
