Thanks again Paul. So it appears that the M.2 drive is using UAS after
all:
Code:
--------------------
tc@pCPServer:/usr/local/bin$ ./lsusb
BUS 002 DEVICE 003: ID 174C:55AA ASMEDIA TECHNOLOGY INC. ASM1051E SATA 6GB/S
BRIDGE, ASM1053E SATA 6GB/S BRIDGE, ASM1153 SATA 3GB/S BRIDGE, ASM1153E SATA
6GB/S BRIDGE
Bus 002 Device 002: ID 0781:5583 SanDisk Corp. Ultra Fit
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
tc@pCPServer:/usr/local/bin$ ./lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
|__ Port 1: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
|__ PORT 2: DEV 3, IF 0, CLASS=MASS STORAGE, DRIVER=UAS, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
tc@pCPServer:/usr/local/bin$ ./lsusb -v -d 174c:55aa | grep -i interface
bDeviceClass 0 (Defined at Interface level)
bNumInterfaces 1
Interface Descriptor:
bInterfaceNumber 0
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk-Only
iInterface 0
Interface Descriptor:
bInterfaceNumber 0
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
BINTERFACEPROTOCOL 98
iInterface 0
--------------------
Maybe this explains why it is 50% faster than the previous SATA SSD -
I'll have to go back and recheck that one.
I did load the full Raspberry Pi OS onto a spare SD card and I got the
same '[Unmap command not implemented]'. SO I starting to doubt what the
Western Digital Dashboard told me about Trim under Windows - I'll take
another look.
------------------------------------------------------------------------
chill's Profile: http://forums.slimdevices.com/member.php?userid=10839
View this thread: http://forums.slimdevices.com/showthread.php?t=113575
_______________________________________________
unix mailing list
[email protected]
http://lists.slimdevices.com/mailman/listinfo/unix
