[ 1820.755293] usb 2-1: USB disconnect, device number 2
[ 1820.757336] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[ 1820.992401] blk_update_request: I/O error, dev sda, sector 32768 op 0x0:(READ) flags 0x0 phys_seg 32 prio class 0
[ 1821.002897] sd 0:0:0:0: [sda] Synchronize Cache(10) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
[ 1821.691626] usb 2-1: new SuperSpeed Gen 1 USB device number 3 using xhci_hcd
[ 1821.712836] usb 2-1: New USB device found, idVendor=0080, idProduct=0578, bcdDevice= 1.04
[ 1821.712852] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1821.712865] usb 2-1: Product: External USB 3.0
[ 1821.712876] usb 2-1: Manufacturer: JMicron
[ 1821.712886] usb 2-1: SerialNumber: 2015033100077
[ 1821.721844] scsi host1: uas
[ 1821.723074] scsi 1:0:0:0: Direct-Access     External USB 3.0          0104 PQ: 0 ANSI: 6
[ 1821.724659] sd 1:0:0:0: Attached scsi generic sg0 type 0
[ 1821.725523] sd 1:0:0:0: [sdb] 7814037168 512-byte logical blocks: (4.00 TB/3.64 TiB)
[ 1821.725532] sd 1:0:0:0: [sdb] 4096-byte physical blocks
[ 1821.725731] sd 1:0:0:0: [sdb] Write Protect is off
[ 1821.725740] sd 1:0:0:0: [sdb] Mode Sense: 53 00 00 08
[ 1821.726135] sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 1821.726782] sd 1:0:0:0: [sdb] Optimal transfer size 33553920 bytes not a multiple of physical block size (4096 bytes)
[ 1821.744551] sd 1:0:0:0: [sdb] Attached SCSI disk
[ 1821.935326] usb 2-1: USB disconnect, device number 3
[ 1821.937245] sd 1:0:0:0: [sdb] Synchronizing SCSI cache
[ 1821.937305] blk_update_request: I/O error, dev sdb, sector 7814036992 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
[ 1821.963268] blk_update_request: I/O error, dev sdb, sector 7814036992 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
[ 1821.974057] Buffer I/O error on dev sdb, logical block 976754624, async page read
[ 1822.203354] sd 1:0:0:0: [sdb] Synchronize Cache(10) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
[ 1822.551617] usb 2-1: new SuperSpeed Gen 1 USB device number 4 using xhci_hcd
[ 1822.572850] usb 2-1: New USB device found, idVendor=0080, idProduct=0578, bcdDevice= 1.04
[ 1822.572867] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1822.572879] usb 2-1: Product: External USB 3.0
[ 1822.572891] usb 2-1: Manufacturer: JMicron
[ 1822.572901] usb 2-1: SerialNumber: 2015033100077
[ 1822.581987] scsi host1: uas
[ 1822.583590] scsi 1:0:0:0: Direct-Access     External USB 3.0          0104 PQ: 0 ANSI: 6
[ 1822.585110] sd 1:0:0:0: Attached scsi generic sg0 type 0
[ 1822.585848] sd 1:0:0:0: [sdb] 7814037168 512-byte logical blocks: (4.00 TB/3.64 TiB)
[ 1822.585858] sd 1:0:0:0: [sdb] 4096-byte physical blocks
[ 1822.586059] sd 1:0:0:0: [sdb] Write Protect is off
[ 1822.586067] sd 1:0:0:0: [sdb] Mode Sense: 53 00 00 08
[ 1822.586446] sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 1822.587099] sd 1:0:0:0: [sdb] Optimal transfer size 33553920 bytes not a multiple of physical block size (4096 bytes)
[ 1822.612394] sd 1:0:0:0: [sdb] Attached SCSI disk