Am Donnerstag, den 29.08.2019, 20:33 +0200 schrieb Julian Sikorski: Hi, this is a relief. If necessary we can blacklist the new device. Howevera, as that costs performance, I would appriciate if you take first try out an alternative approach. > [ 362.230833] usb 2-4: New USB device found, idVendor=059f, > idProduct=1061, bcdDevice= 0.01 > [ 362.230837] usb 2-4: New USB device strings: Mfr=2, Product=3, > SerialNumber=1 > [ 362.230839] usb 2-4: Product: Rugged USB3-FW > [ 362.230841] usb 2-4: Manufacturer: LaCie > [ 362.230842] usb 2-4: SerialNumber: 00000000157f928920fa > [ 362.270100] scsi host12: uas > [ 362.270720] scsi 12:0:0:0: Direct-Access LaCie Rugged FW USB3 > 051E PQ: 0 ANSI: 6 > [ 362.271472] sd 12:0:0:0: Attached scsi generic sg1 type 0 > [ 362.280344] sd 12:0:0:0: [sdb] 1953525168 512-byte logical blocks: > (1.00 TB/932 GiB) > [ 362.280422] sd 12:0:0:0: [sdb] Write Protect is off > [ 362.280423] sd 12:0:0:0: [sdb] Mode Sense: 43 00 00 00 > [ 362.280544] sd 12:0:0:0: [sdb] Write cache: enabled, read cache: > enabled, doesn't support DPO or FUA This means that at least the earliest commandos did get through. > [ 392.672691] sd 12:0:0:0: tag#29 uas_eh_abort_handler 0 uas-tag 1 > inflight: IN > [ 392.672697] sd 12:0:0:0: tag#29 CDB: Report supported operation codes > a3 0c 01 12 00 00 00 00 02 00 00 00 > [ 392.678304] scsi host12: uas_eh_device_reset_handler start > [ 392.800099] usb 2-4: reset SuperSpeed Gen 1 USB device number 3 using > xhci_hcd > [ 392.848154] scsi host12: uas_eh_device_reset_handler success > [ 422.875443] scsi host12: uas_eh_device_reset_handler start > [ 422.875650] sd 12:0:0:0: tag#16 uas_zap_pending 0 uas-tag 1 inflight: > [ 422.875654] sd 12:0:0:0: tag#16 CDB: Report supported operation codes > a3 0c 01 12 00 00 00 00 02 00 00 00 > [ 422.997556] usb 2-4: reset SuperSpeed Gen 1 USB device number 3 using > xhci_hcd > [ 423.046525] scsi host12: uas_eh_device_reset_handler success > [ 431.853505] usb 2-4: USB disconnect, device number 3 > [ 431.903459] sd 12:0:0:0: [sdb] Optimal transfer size 33553920 bytes > [ 432.064456] sd 12:0:0:0: [sdb] Read Capacity(16) failed: Result: > hostbyte=DID_ERROR driverbyte=DRIVER_OK Read Capacity(16) failed > [ 432.064459] sd 12:0:0:0: [sdb] Sense not available. > [ 432.184595] sd 12:0:0:0: [sdb] Read Capacity(10) failed: Result: > hostbyte=DID_ERROR driverbyte=DRIVER_OK Read Capacity(10) failed There is a chance that this device can deal only with Read Capacity(10) and crashes on Read Capacity(16). One difference between Usb-storage and UAS is the order in which the 10 and 16 versions are tried. The attached patches introduce a quirk to reverse the order for this particular device under UAS. Could you try them? Regards Oliver