[SCSI] scsi_debug: fix Thin provisioning support
While testing scsi_debug with these patches I found a
problem with the Block Limits VPD page function. The
length returned by the inquiry_evpd_b0() function was
too short. A patch to fix that and a cosmetic change
(that the form factor of scsi_debug is less than 1.8
inches) is attached.
Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index cb4bf16..0b575c8 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -685,10 +685,12 @@
}
+/* Block limits VPD page (SBC-3) */
static unsigned char vpdb0_data[] = {
- /* from 4th byte */ 0,0,0,4,
- 0,0,0x4,0,
- 0,0,0,64,
+ /* from 4th byte */ 0,0,0,4, 0,0,0x4,0, 0,0,0,64,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
};
static int inquiry_evpd_b0(unsigned char * arr)
@@ -731,11 +733,14 @@
return sizeof(vpdb0_data);
}
+/* Block device characteristics VPD page (SBC-3) */
static int inquiry_evpd_b1(unsigned char *arr)
{
memset(arr, 0, 0x3c);
arr[0] = 0;
- arr[1] = 1;
+ arr[1] = 1; /* non rotating medium (e.g. solid state) */
+ arr[2] = 0;
+ arr[3] = 5; /* less than 1.8" */
return 0x3c;
}