My Samsung Portable SSD T3 USB 3.0 external drive mounts fine in many operating systems but not in all Linux operating systems.
When the drive is attached through a USB 2 hub, it is recognized and mounts as a normal usb storage device. However, using USB 3, uas (USB Attached SCSI) tries to handle the drive, and fails with errors. dmesg reports the following:
[ 79.365649] usb 3-2: USB disconnect, device number 3
[ 95.986879] usb 3-2: new SuperSpeed USB device number 5 using xhci_hcd
[ 96.008915] usb 3-2: New USB device found, idVendor=04e8, idProduct=61f3
[ 96.008917] usb 3-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[ 96.008918] usb 3-2: Product: Portable SSD T3
[ 96.008918] usb 3-2: Manufacturer: Samsung
[ 96.008919] usb 3-2: SerialNumber: [REDACTED]
[ 96.024373] scsi host3: uas
[ 96.034588] usb 3-2: stat urb: status -32
[ 96.034633] scsi 3:0:0:0: tag#0 data cmplt err -32 uas-tag 1 inflight: CMD
[ 96.034636] scsi 3:0:0:0: tag#0 CDB: Inquiry 12 00 00 00 24 00
[ 116.976075] scsi 3:0:0:0: tag#0 uas_eh_abort_handler 0 uas-tag 1 inflight: CMD
[ 116.976082] scsi 3:0:0:0: tag#0 CDB: Inquiry 12 00 00 00 24 00
[ 116.976099] scsi host3: uas_eh_bus_reset_handler start
[ 117.104269] usb 3-2: reset SuperSpeed USB device number 5 using xhci_hcd
[ 117.142580] scsi host3: uas_eh_bus_reset_handler success
[ 117.144741] scsi 3:0:0:0: tag#0 uas_eh_abort_handler 0 uas-tag 1 inflight: CMD
[ 117.144748] scsi 3:0:0:0: tag#0 CDB: Test Unit Ready 00 00 00 00 00 00
[ 117.144753] scsi host3: uas_eh_bus_reset_handler start
[ 117.381185] usb 3-2: reset SuperSpeed USB device number 5 using xhci_hcd
[ 117.419021] scsi host3: uas_eh_bus_reset_handler success
[ 117.419032] scsi 3:0:0:0: Device offlined - not ready after error recovery
Others have encounted a similar problem, including:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1584557
https://bbs.archlinux.org/viewtopic.php?id=204256
https://unix.stackexchange.com/questions/332390/trying-read-a-sata-usb-3-0-kali-linux-light
To address this, first I unplugged the USB drive. Then I created a file named uas-quirks.conf in /etc/modprobe.d. In this file I placed these lines:
blacklist uas
usb-storage quirks=04e8:061f3:u
The quirks parameter refers to the USB vendor and product ID, seen in the dmesg output.
Then I removed the uas and usb-storage modules:
# rmmod uas usb-storage
Then I reinserted the drive. dmesg shows the successful recognition and mounting of the drive:
[ 440.997304] usb 3-2: USB disconnect, device number 7
[ 444.483537] usb 3-2: new SuperSpeed USB device number 8 using xhci_hcd
[ 444.508678] usb 3-2: New USB device found, idVendor=04e8, idProduct=61f3
[ 444.508683] usb 3-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[ 444.508686] usb 3-2: Product: Portable SSD T3
[ 444.508688] usb 3-2: Manufacturer: Samsung
[ 444.508690] usb 3-2: SerialNumber: [REDACTED]
[ 444.548376] usb 3-2: UAS is blacklisted for this device, using usb-storage instead
[ 444.548379] usb-storage 3-2:1.0: USB Mass Storage device detected
[ 444.552347] usb-storage 3-2:1.0: Quirks match for vid 04e8 pid 61f3: 800000
[ 444.552392] scsi host3: usb-storage 3-2:1.0
[ 444.552589] usbcore: registered new interface driver usb-storage
[ 445.575738] scsi 3:0:0:0: Direct-Access Samsung Portable SSD T3 0 PQ: 0 ANSI: 6
[ 445.578869] sd 3:0:0:0: Attached scsi generic sg5 type 0
[ 445.583770] sd 3:0:0:0: [sde] 488397168 512-byte logical blocks: (250 GB/233 GiB)
[ 445.586010] sd 3:0:0:0: [sde] Write Protect is off
[ 445.586019] sd 3:0:0:0: [sde] Mode Sense: 43 00 00 00
[ 445.591757] sd 3:0:0:0: [sde] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 445.610612] sde: sde1
[ 445.621442] sd 3:0:0:0: [sde] Attached SCSI disk
[ 445.924981] EXT4-fs (sde1): mounted filesystem with ordered data mode. Opts: (null)
This is lost after a reboot, though removing the uab and usb-storage modules again (via the rmmod command, above) and reinserting the drive fixes this.
To make this stick through a reboot, the initial ramdisk must be regenerated. This is mentioned for Arch linux in post 12, here: https://bbs.archlinux.org/viewtopic.php?id=183190. For Debian-based distros, we must use
# update-initramfs -u
as described in https://unix.stackexchange.com/questions/268903/what-is-the-equivalent-of-mkinitcpio-conf-on-debian
Reboot, and the drive should become available at boot.
I have a WD SSD, but never faced anykind of trouble before. If I do plan to buy a Samsung one anytime, I'll keep this in mind.
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