The 5TB 2.5-inch WD Black P10 external USB hard drive seems
to use SMR technology. It supports TRIM via the unmap operation.
Maybe because it is marketed as a drive for gaming that is
compatible with PlayStation, Xbox, PC and Mac, it does not
support UASP protocol but uses bulk-only transport.
Therefore, Linux does not attempt to read the VPD and does
not enable TRIM by default. (Currently, there is a bug and
Linux incorrectly enables a writesame_16 TRIM operation on
the drive and does not change it to the correct unmap TRIM
operation because it does not attempt to read the info from
the VPD. I already submitted a patch for that bug.)
This patch adds this drive to the scsi_static_device_list
with a BLIST_TRY_VPD_PAGES flag. Although there are comments
in the code indicating that this list is deprecated and that
'echo "WD:Game Drive:0x10000400" > /proc/scsi/device_info'
should be used instead, I haven't found a better place to
persist this information. Moreover, the list already contains
a similar entry for the SanDisk Cruzer Blade USB flash drive.
Signed-off-by: David Sebek <dasebek@xxxxxxxxx>
---
drivers/scsi/scsi_devinfo.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c
index d92cec12454c..3ed558c168be 100644
--- a/drivers/scsi/scsi_devinfo.c
+++ b/drivers/scsi/scsi_devinfo.c
@@ -256,6 +256,7 @@ static struct {
{"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
{"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
{"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
+ {"WD", "Game Drive", NULL, BLIST_TRY_VPD_PAGES | BLIST_INQUIRY_36},
{"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
{"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
{"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
--
2.31.1
