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authorDouglas Gilbert <dgilbert@interlog.com>2009-10-29 01:48:31 -0400
committerJames Bottomley <James.Bottomley@suse.de>2009-12-04 12:00:49 -0600
commit1e49f78505b2c4df193614d774bf46d067cda7d8 (patch)
tree7c27efa7e6d44515c5c0b631ae559297ee7e15bd /drivers/scsi
parent851b164231d1117673aa44c00c7622e48b7dfcf4 (diff)
[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>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/scsi_debug.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index cb4bf16b4e6..0b575c87100 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -685,10 +685,12 @@ static int inquiry_evpd_89(unsigned char * arr)
}
+/* 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 @@ static int inquiry_evpd_b0(unsigned char * arr)
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;
}