Jul 18 10:30:35 random kernel: _ratelimit: 480 callbacks suppressed Jul 18 10:30:35 random kernel: sd 9:0:0:0: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
Jul 18 10:30:35 random kernel: sd 9:0:0:0: Unhandled error code Upon one physical disconnection, it logged these messages: Jul 18 09:35:23 random kernel: xhci_hcd 0000:05:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff880464ad52c0 Jul 18 09:35:23 random kernel: usb 4-4: Parent hub missing LPM exit latency info. Jul 18 09:35:23 random kernel: usb 4-4: reset SuperSpeed USB device number 2 using xhci_hcd Jul 18 09:35:15 random kernel: sd 8:0:0:0: Attached SCSI disk Jul 18 09:35:15 random kernel: sd 8:0:0:0: Assuming drive cache: write through Jul 18 09:35:15 random kernel: sd 8:0:0:0: Write Protect is off Jul 18 09:35:15 random kernel: sd 8:0:0:0: Attached scsi generic sg2 type 0 Jul 18 09:35:15 random kernel: scsi 8:0:0:0: Direct-Access LaCie Rugged FW USB3 051E PQ: 0 ANSI: 6 Jul 18 09:35:14 random kernel: USB Mass Storage support registered.
Jul 18 09:35:14 random kernel: usbcore: registered new interface driver usb-storage Jul 18 09:35:14 random kernel: scsi8 : SCSI emulation for USB Mass Storage devices Jul 18 09:35:14 random kernel: Initializing USB Mass Storage driver. Jul 18 09:35:14 random kernel: usb 4-4: configuration #1 chosen from 1 choice
Jul 18 09:35:14 random kernel: usb 4-4: Manufacturer: LaCie Jul 18 09:35:14 random kernel: usb 4-4: Product: Rugged USB3-FW Jul 18 09:35:14 random kernel: usb 4-4: New USB device strings: Mfr=2, Product=3, SerialNumber=1 Jul 18 09:35:14 random kernel: usb 4-4: New USB device found, idVendor=059f, idProduct=1061 Jul 18 09:35:14 random kernel: usb 4-4: Parent hub missing LPM exit latency info. Jul 18 09:35:14 random kernel: usb 4-4: new SuperSpeed USB device number 2 using xhci_hcd The kernel logs these messages when the disk is connected to a USB3 port: The external disk being tested is a LaCie 500GB USB3/FW disk (more information below). The problem manifested on Dell Precision T3610 and T5500 computers running CentOS 6.5, but did not manifest on a T5500 running CentOS 5.7 (kernel 2.6.18-274.12.1 / x86_64).
The affected CentOS 6 computers are all on version 6.5, with the latest updates applied as of today, 1, including running under kernel 2.6.32-431.20.3 (x86_64). Perform any operation that needs to read the disk, such as reading its partition table via fdisk or simply performing a raw read via dd. Wait for the kernel to recognize it, and for udev to assign it a device file (this is fast).ģ. Connect an affected disk to the computer via any USB 2 or USB 3 port.Ģ. Moreover, the disks work fine on a *CentOS 5* system, so this represents a regression.ġ. Other USB disks work fine on these same systems, however. The same behavior is observed whether the disk is connected to a USB2 or USB3 port, and it is consistent across several different computers all running CentOS 6. For instance, if the disk is assigned to /dev/sdb, and its first (and only) partition is assigned to /dev/sdb1, 'fdisk /dev/sdb' hangs until killed and 'dd if=/dev/sdb' locks up until I physically disconnect the device. It detects when they are connected, shows them via 'lsusb', and udev assigns device files to them, but their content cannot be read. The system is unable to read certain newer external USB disks. 0007396: The system cannot read certain external USB disks