Hello First off, I would like to clarify that I was redirected here from gentoo-user (see my thread at http://archives.gentoo.org/gentoo-user/message/5677e2044aba73c5ac046a2a634f801a). If this is the wrong list for issues like this, please direct me to the proper place. Also, while I searched the net beforehand, the "best" I could find were Ubuntu forum entries ([0] and [1], both sans resolution), so please excuse me if this has already been reported. Now, the problem I'm facing is that the logical sector size on my external HDD is being incorrectly detected on initial connect. The symptom that follows from this is that the none of the partitions can be mounted. I get the following dmesg entries: Mär 22 10:57:54 marcec kernel: scsi 8:0:0:0: Direct-Access Toshiba External USB 3.0 0201 PQ: 0 ANSI: 6 Mär 22 10:57:54 marcec kernel: sd 8:0:0:0: Attached scsi generic sg6 type 0 Mär 22 10:57:54 marcec kernel: sd 8:0:0:0: [sdf] Very big device. Trying to use READ CAPACITY(16). Mär 22 10:57:54 marcec kernel: sd 8:0:0:0: [sdf] 5860533160 512-byte logical blocks: (3.00 TB/2.72 TiB) Mär 22 10:57:54 marcec kernel: sd 8:0:0:0: [sdf] Write Protect is off Mär 22 10:57:54 marcec kernel: sd 8:0:0:0: [sdf] Mode Sense: 2b 00 00 00 Mär 22 10:57:54 marcec kernel: sd 8:0:0:0: [sdf] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA Mär 22 10:57:54 marcec kernel: sd 8:0:0:0: [sdf] Very big device. Trying to use READ CAPACITY(16). Mär 22 10:58:10 marcec kernel: usb 4-2: reset SuperSpeed USB device number 2 using xhci_hcd Mär 22 10:58:10 marcec kernel: xhci_hcd 0000:02:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800dc974b40 Mär 22 10:58:10 marcec kernel: xhci_hcd 0000:02:00.0: xHCI xhci_drop_endpoint called with disabled ep ffff8800dc974b88 Mär 22 10:58:10 marcec kernel: sdf: unknown partition table Mär 22 10:58:10 marcec kernel: sd 8:0:0:0: [sdf] Very big device. Trying to use READ CAPACITY(16). Mär 22 10:58:10 marcec kernel: sd 8:0:0:0: [sdf] Attached SCSI disk Mär 22 10:58:32 marcec kernel: usb 4-2: USB disconnect, device number 2 Mär 22 10:58:34 marcec kernel: usb 4-2: new SuperSpeed USB device number 3 using xhci_hcd Mär 22 10:58:34 marcec kernel: usb-storage 4-2:1.0: USB Mass Storage device detected Mär 22 10:58:34 marcec kernel: scsi host9: usb-storage 4-2:1.0 Mär 22 10:58:39 marcec kernel: scsi 9:0:0:0: Direct-Access Toshiba External USB 3.0 0201 PQ: 0 ANSI: 6 Mär 22 10:58:39 marcec kernel: sd 9:0:0:0: Attached scsi generic sg6 type 0 Mär 22 10:58:39 marcec kernel: sd 9:0:0:0: [sdf] Very big device. Trying to use READ CAPACITY(16). Mär 22 10:58:39 marcec kernel: sd 9:0:0:0: [sdf] 732566645 4096-byte logical blocks: (3.00 TB/2.72 TiB) Mär 22 10:58:39 marcec kernel: sd 9:0:0:0: [sdf] Write Protect is off Mär 22 10:58:39 marcec kernel: sd 9:0:0:0: [sdf] Mode Sense: 2b 00 00 00 Mär 22 10:58:39 marcec kernel: sd 9:0:0:0: [sdf] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA Mär 22 10:58:39 marcec kernel: sd 9:0:0:0: [sdf] 732566645 4096-byte logical blocks: (3.00 TB/2.72 TiB) Mär 22 10:58:39 marcec kernel: sdf: sdf1 sdf2 Mär 22 10:58:39 marcec kernel: sd 9:0:0:0: [sdf] 732566645 4096-byte logical blocks: (3.00 TB/2.72 TiB) Mär 22 10:58:39 marcec kernel: sd 9:0:0:0: [sdf] Attached SCSI disk Mär 22 10:58:41 marcec kernel: BTRFS: device label MARCEC_BACKUP devid 1 transid 65908 /dev/sdf2 Mär 22 10:58:42 marcec kernel: EXT4-fs (sdf1): mounted filesystem with ordered data mode. Opts: (null) Mär 22 10:58:42 marcec kernel: BTRFS info (device sdf2): disk space caching is enabled Mär 22 10:58:42 marcec kernel: BTRFS: has skinny extents (I picked these out of the entire dmesg (well, "journalctl -k") output, so I hope nothing important is missing.) I have to unplug it and plug it back in, after which it works correctly (as can be seen in the log above). It appears to be important that my PC has been cold booted, as that is the only time when I can reliably reproduce this. The precise scenarios I have tested that *work* are: - turning off the HDD (i.e., unplugging the AC) while leaving the PC on, then turning it back on several hours later, and - rebooting my PC (while the HDD stays on). I also tried it on my brother's Windows 8 PC, where the drive was correctly detected and the FAT32 test partition was mounted (once Windows installed drivers and whatnot; I did *not* install drivers manually). The above problem did not show up after moving it back to my PC immediately afterwards. Also, the drive originally had an MBR, but in the meantime I converted it to GPT (using cgdisk), since the firmware "translation" mentioned in [0] and [1] is supposedly there to keep MBR working, but it did not change anything. Finally, I also tried blacklisting the uas module, but again, no change. If I'm unlucky, it's a firmware problem, but I hope that it's something that can be fixed in the relevant driver. The USB3 host controller involved: # lsusb -v -d 1d6b:0003 Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 3.00 bDeviceClass 9 Hub bDeviceSubClass 0 bDeviceProtocol 3 bMaxPacketSize0 9 idVendor 0x1d6b Linux Foundation idProduct 0x0003 3.0 root hub bcdDevice 3.18 iManufacturer 3 Linux 3.18.9-gentoo xhci-hcd iProduct 2 xHCI Host Controller iSerial 1 0000:02:00.0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 31 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 9 Hub bInterfaceSubClass 0 bInterfaceProtocol 0 Full speed (or root) hub iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0004 1x 4 bytes bInterval 12 bMaxBurst 0 Hub Descriptor: bLength 12 bDescriptorType 42 nNbrPorts 2 wHubCharacteristic 0x0009 Per-port power switching Per-port overcurrent protection bPwrOn2PwrGood 10 * 2 milli seconds bHubContrCurrent 0 milli Ampere bHubDecLat 0.0 micro seconds wHubDelay 0 nano seconds DeviceRemovable 0x00 Hub Port Status: Port 1: 0000.02a0 5Gbps power Rx.Detect Port 2: 0000.0203 5Gbps power U0 enable connect Binary Object Store Descriptor: bLength 5 bDescriptorType 15 wTotalLength 15 bNumDeviceCaps 1 SuperSpeed USB Device Capability: bLength 10 bDescriptorType 16 bDevCapabilityType 3 bmAttributes 0x02 Latency Tolerance Messages (LTM) Supported wSpeedsSupported 0x0008 Device can operate at SuperSpeed (5Gbps) bFunctionalitySupport 3 Lowest fully-functional device speed is SuperSpeed (5Gbps) bU1DevExitLat 0 micro seconds bU2DevExitLat 0 micro seconds can't get debug descriptor: Resource temporarily unavailable Device Status: 0x0001 Self Powered # lspci -vvv -s 02:00.0 02:00.0 USB controller: Renesas Technology Corp. uPD720202 USB 3.0 Host Controller (rev 02) (prog-if 30 [XHCI]) Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 32 bytes Interrupt: pin A routed to IRQ 16 Region 0: Memory at fddfe000 (64-bit, non-prefetchable) [size=8K] Capabilities: [50] Power Management version 3 Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME- Capabilities: [70] MSI: Enable- Count=1/8 Maskable- 64bit+ Address: 0000000000000000 Data: 0000 Capabilities: [90] MSI-X: Enable+ Count=8 Masked- Vector table: BAR=0 offset=00001000 PBA: BAR=0 offset=00001080 Capabilities: [a0] Express (v2) Endpoint, MSI 00 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s unlimited, L1 unlimited ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset- DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+ MaxPayload 128 bytes, MaxReadReq 512 bytes DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend- LnkCap: Port #0, Speed 5GT/s, Width x1, ASPM L0s L1, Latency L0 <4us, L1 unlimited ClockPM+ Surprise- LLActRep- BwNot- LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+ ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- DevCap2: Completion Timeout: Not Supported, TimeoutDis+, LTR+, OBFF Not Supported DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis- Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS- Compliance De-emphasis: -6dB LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete-, EqualizationPhase1- EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest- Capabilities: [100 v1] Advanced Error Reporting UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol- UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol- CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+ CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+ AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn- Capabilities: [150 v1] Latency Tolerance Reporting Max snoop latency: 0ns Max no snoop latency: 0ns Kernel driver in use: xhci_hcd Kernel modules: xhci_pci The external HDD (note that it uses UAS): # lsusb -v -d 0480:d010 Bus 004 Device 003: ID 0480:d010 Toshiba America Info. Systems, Inc. External Disk 3TB Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 3.00 bDeviceClass 0 bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 9 idVendor 0x0480 Toshiba America Info. Systems, Inc. idProduct 0xd010 External Disk 3TB bcdDevice 6.07 iManufacturer 1 Toshiba iProduct 2 External USB 3.0 iSerial 3 20130421020612 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 44 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xc0 Self Powered MaxPower 2mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 8 Mass Storage bInterfaceSubClass 6 SCSI bInterfaceProtocol 80 Bulk-Only iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0400 1x 1024 bytes bInterval 0 bMaxBurst 14 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0400 1x 1024 bytes bInterval 0 bMaxBurst 14 Binary Object Store Descriptor: bLength 5 bDescriptorType 15 wTotalLength 22 bNumDeviceCaps 2 USB 2.0 Extension Device Capability: bLength 7 bDescriptorType 16 bDevCapabilityType 2 bmAttributes 0x00000002 HIRD Link Power Management (LPM) Supported SuperSpeed USB Device Capability: bLength 10 bDescriptorType 16 bDevCapabilityType 3 bmAttributes 0x00 wSpeedsSupported 0x000e Device can operate at Full Speed (12Mbps) Device can operate at High Speed (480Mbps) Device can operate at SuperSpeed (5Gbps) bFunctionalitySupport 1 Lowest fully-functional device speed is Full Speed (12Mbps) bU1DevExitLat 10 micro seconds bU2DevExitLat 2047 micro seconds can't get debug descriptor: Resource temporarily unavailable Device Status: 0x0001 Self Powered The above information is from when I was running Linux 3.18.9-gentoo, but I've also tested with 3.19.2-gentoo and upstream 3.19.2. I'm not sure whether I'm prepared to test an RC kernel, but I suppose I could be persuaded. [0] http://askubuntu.com/questions/337017/cant-read-partition-table-of-3tb-usb-disk [1] http://ubuntuforums.org/showthread.php?t=1536933 Greetings -- Marc Joliet -- "People who think they know everything really annoy those of us who know we don't" - Bjarne Stroustrup
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