Lenz Grimmer, thank you for taking the time to report this bug and trying to help make Ubuntu better. However, the mainline kernel is not a software package provided by the official Ubuntu repositories. For more on this, please see https://wiki.ubuntu.com/Kernel/MainlineBuilds#Does_the_kernel_team_support_the_mainline_kernel_builds.3F . Because of this the Ubuntu project can not support or fix your particular bug. Please report this bug to the provider of the software package. Thanks!
If you are interested in learning more about software repositories and Ubuntu, check https://help.ubuntu.com/community/Repositories ** Changed in: linux (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1415859 Title: Immediate I/O errors when dd-ing data to an external USB3 disk Status in linux package in Ubuntu: Invalid Bug description: I discovered this bug while trying to dd a potentially corrupt Btrfs file system to an external hard disk (see #1415510 for details). Unfortunately "ubuntu-bug" refused to file this report, as I'm running the mainline kernel (as requested in the other bug report). I'm running Linux 3.19.0-031900rc6-generic (x86_64) in Ubuntu Trusty on an IBM Thinkpad T440. I am using an external 4TB Samsung USB3 hard disk drive for backup purposes. % cat /proc/version Linux version 3.19.0-031900rc6-generic (kernel@gomeisa) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #201501261152 SMP Mon Jan 26 16:53:27 UTC 2015 When trying to dd the content of a logical volume into an image file on the external disk drive (/dev/sdc1, formatted using ext4), the kernel immediately begins to throw I/O Errors: % sudo dd bs=8k if=/dev/mapper/ubuntu--vg-container of=/media/lenz/e2a4dc71-4c96-4dab-982c-29918e556afd/vg-container.img Jan 29 12:18:10 lenz-ThinkPad-T440 kernel: [ 520.321122] usb 2-1: new SuperSpeed USB device number 5 using xhci_hcd Jan 29 12:18:10 lenz-ThinkPad-T440 kernel: [ 520.337777] usb 2-1: New USB device found, idVendor=04e8, idProduct=6125 Jan 29 12:18:10 lenz-ThinkPad-T440 kernel: [ 520.337781] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Jan 29 12:18:10 lenz-ThinkPad-T440 kernel: [ 520.337783] usb 2-1: Product: D3 Station Jan 29 12:18:10 lenz-ThinkPad-T440 kernel: [ 520.337785] usb 2-1: Manufacturer: Samsung Jan 29 12:18:10 lenz-ThinkPad-T440 kernel: [ 520.337786] usb 2-1: SerialNumber: 00000000011E0A49 Jan 29 12:18:10 lenz-ThinkPad-T440 kernel: [ 520.352472] usb-storage 2-1:1.0: USB Mass Storage device detected Jan 29 12:18:10 lenz-ThinkPad-T440 kernel: [ 520.352561] scsi host3: usb-storage 2-1:1.0 Jan 29 12:18:10 lenz-ThinkPad-T440 kernel: [ 520.352644] usbcore: registered new interface driver usb-storage Jan 29 12:18:10 lenz-ThinkPad-T440 kernel: [ 520.354202] usbcore: registered new interface driver uas Jan 29 12:18:11 lenz-ThinkPad-T440 kernel: [ 521.349445] scsi 3:0:0:0: Direct-Access Samsung D3 Station 0202 PQ: 0 ANSI: 6 Jan 29 12:18:11 lenz-ThinkPad-T440 kernel: [ 521.349740] sd 3:0:0:0: Attached scsi generic sg2 type 0 Jan 29 12:18:11 lenz-ThinkPad-T440 kernel: [ 521.351547] sd 3:0:0:0: [sdc] Spinning up disk... Jan 29 12:18:22 lenz-ThinkPad-T440 kernel: [ 526.766731] .......ready Jan 29 12:18:22 lenz-ThinkPad-T440 kernel: [ 532.788913] sd 3:0:0:0: [sdc] 976754645 4096-byte logical blocks: (4.00 TB/3.63 TiB) Jan 29 12:18:22 lenz-ThinkPad-T440 kernel: [ 532.789457] sd 3:0:0:0: [sdc] Write Protect is off Jan 29 12:18:22 lenz-ThinkPad-T440 kernel: [ 532.789459] sd 3:0:0:0: [sdc] Mode Sense: 2b 00 10 08 Jan 29 12:18:22 lenz-ThinkPad-T440 kernel: [ 532.789992] sd 3:0:0:0: [sdc] Write cache: enabled, read cache: enabled, supports DPO and FUA Jan 29 12:18:22 lenz-ThinkPad-T440 kernel: [ 532.790315] sd 3:0:0:0: [sdc] 976754645 4096-byte logical blocks: (4.00 TB/3.63 TiB) Jan 29 12:18:22 lenz-ThinkPad-T440 kernel: [ 532.813839] sdc: sdc1 Jan 29 12:18:22 lenz-ThinkPad-T440 kernel: [ 532.814333] sd 3:0:0:0: [sdc] 976754645 4096-byte logical blocks: (4.00 TB/3.63 TiB) Jan 29 12:18:22 lenz-ThinkPad-T440 kernel: [ 532.843305] sd 3:0:0:0: [sdc] Attached SCSI disk Jan 29 12:18:23 lenz-ThinkPad-T440 kernel: [ 533.145443] EXT4-fs (sdc1): mounted filesystem with ordered data mode. Opts: (null) Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192217] sd 3:0:0:0: [sdc] FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192222] sd 3:0:0:0: [sdc] CDB: Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192223] Write(10): 2a 00 01 a7 a4 00 00 3c 00 00 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192230] blk_update_request: I/O error, dev sdc, sector 222109696 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192236] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 33554432 size 8388608 starting block 27763968) Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192239] Buffer I/O error on device sdc1, logical block 27763456 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192242] Buffer I/O error on device sdc1, logical block 27763457 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192244] Buffer I/O error on device sdc1, logical block 27763458 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192245] Buffer I/O error on device sdc1, logical block 27763459 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192247] Buffer I/O error on device sdc1, logical block 27763460 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192248] Buffer I/O error on device sdc1, logical block 27763461 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192249] Buffer I/O error on device sdc1, logical block 27763462 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192251] Buffer I/O error on device sdc1, logical block 27763463 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192252] Buffer I/O error on device sdc1, logical block 27763464 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192254] Buffer I/O error on device sdc1, logical block 27763465 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192336] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 33554432 size 8388608 starting block 27764224) Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192412] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 33554432 size 8388608 starting block 27764480) Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192486] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 33554432 size 8388608 starting block 27764736) Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192561] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 33554432 size 8388608 starting block 27764992) Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192637] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 41943040 size 8388608 starting block 27765248) Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192717] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 41943040 size 8388608 starting block 27765504) Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192787] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 41943040 size 8388608 starting block 27765760) Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192856] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 41943040 size 8388608 starting block 27766016) Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.192928] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 41943040 size 8388608 starting block 27766272) Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.236033] sd 3:0:0:0: [sdc] FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.236038] sd 3:0:0:0: [sdc] CDB: Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.236039] Write(10): 2a 00 01 a7 e0 00 00 21 00 00 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.236047] blk_update_request: I/O error, dev sdc, sector 222232576 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.759490] sd 3:0:0:0: [sdc] FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.759522] sd 3:0:0:0: [sdc] CDB: Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.759527] Write(10): 2a 00 01 a8 9d 00 00 34 00 00 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.759538] blk_update_request: I/O error, dev sdc, sector 222619648 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.792110] sd 3:0:0:0: [sdc] FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.792114] sd 3:0:0:0: [sdc] CDB: Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.792116] Write(10): 2a 00 01 a8 d1 00 00 34 00 00 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.792123] blk_update_request: I/O error, dev sdc, sector 222726144 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.827998] sd 3:0:0:0: [sdc] FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.828003] sd 3:0:0:0: [sdc] CDB: Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.828004] Write(10): 2a 00 01 a9 05 00 00 3c 00 00 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.828011] blk_update_request: I/O error, dev sdc, sector 222832640 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.868047] sd 3:0:0:0: [sdc] FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.868052] sd 3:0:0:0: [sdc] CDB: Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.868053] Write(10): 2a 00 01 a9 41 00 00 3c 00 00 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.868060] blk_update_request: I/O error, dev sdc, sector 222955520 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.904054] sd 3:0:0:0: [sdc] FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.904058] sd 3:0:0:0: [sdc] CDB: Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.904059] Write(10): 2a 00 01 a9 7d 00 00 3c 00 00 Jan 29 12:18:58 lenz-ThinkPad-T440 kernel: [ 568.904066] blk_update_request: I/O error, dev sdc, sector 223078400 Jan 29 12:18:59 lenz-ThinkPad-T440 kernel: [ 568.948161] sd 3:0:0:0: [sdc] FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK Jan 29 12:18:59 lenz-ThinkPad-T440 kernel: [ 568.948165] sd 3:0:0:0: [sdc] CDB: Jan 29 12:18:59 lenz-ThinkPad-T440 kernel: [ 568.948167] Write(10): 2a 00 01 a9 b9 00 00 3c 00 00 Jan 29 12:18:59 lenz-ThinkPad-T440 kernel: [ 568.948174] blk_update_request: I/O error, dev sdc, sector 223201280 Jan 29 12:18:59 lenz-ThinkPad-T440 kernel: [ 569.119910] sd 3:0:0:0: [sdc] FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK Jan 29 12:18:59 lenz-ThinkPad-T440 kernel: [ 569.119916] sd 3:0:0:0: [sdc] CDB: Jan 29 12:18:59 lenz-ThinkPad-T440 kernel: [ 569.119919] Write(10): 2a 00 01 aa 09 00 00 3c 00 00 Jan 29 12:18:59 lenz-ThinkPad-T440 kernel: [ 569.119928] blk_update_request: I/O error, dev sdc, sector 223365120 Jan 29 12:18:59 lenz-ThinkPad-T440 kernel: [ 569.163964] sd 3:0:0:0: [sdc] FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK Jan 29 12:18:59 lenz-ThinkPad-T440 kernel: [ 569.163970] sd 3:0:0:0: [sdc] CDB: Jan 29 12:18:59 lenz-ThinkPad-T440 kernel: [ 569.163973] Write(10): 2a 00 01 aa 45 00 00 3c 00 00 Jan 29 12:18:59 lenz-ThinkPad-T440 kernel: [ 569.163983] blk_update_request: I/O error, dev sdc, sector 223488000 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053115] sd 3:0:0:0: [sdc] FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053121] sd 3:0:0:0: [sdc] CDB: Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053123] Write(10): 2a 00 01 aa a0 5c 00 34 00 00 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053132] blk_update_request: I/O error, dev sdc, sector 223675104 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053137] EXT4-fs warning: 547 callbacks suppressed Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053140] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 703971328 size 671744 starting block 27959552) Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053144] buffer_io_error: 142582 callbacks suppressed Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053146] Buffer I/O error on device sdc1, logical block 27959132 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053150] Buffer I/O error on device sdc1, logical block 27959133 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053152] Buffer I/O error on device sdc1, logical block 27959134 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053154] Buffer I/O error on device sdc1, logical block 27959135 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053157] Buffer I/O error on device sdc1, logical block 27959136 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053159] Buffer I/O error on device sdc1, logical block 27959137 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053162] Buffer I/O error on device sdc1, logical block 27959138 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053164] Buffer I/O error on device sdc1, logical block 27959139 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053167] Buffer I/O error on device sdc1, logical block 27959140 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053169] Buffer I/O error on device sdc1, logical block 27959141 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053250] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 704643072 size 8388608 starting block 27959808) Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053364] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 704643072 size 8388608 starting block 27960064) Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053477] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 704643072 size 8388608 starting block 27960320) Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053586] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 704643072 size 8388608 starting block 27960576) Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053696] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 704643072 size 8388608 starting block 27960832) Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053805] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 704643072 size 8388608 starting block 27961088) Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.053915] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 704643072 size 8388608 starting block 27961344) Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.054019] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 704643072 size 8388608 starting block 27961600) Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.054210] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 13 (offset 713031680 size 8388608 starting block 27961856) Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.097102] sd 3:0:0:0: [sdc] FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.097106] sd 3:0:0:0: [sdc] CDB: Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.097108] Write(10): 2a 00 01 aa d4 5c 00 34 00 00 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.097115] blk_update_request: I/O error, dev sdc, sector 223781600 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.137353] sd 3:0:0:0: [sdc] FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.137357] sd 3:0:0:0: [sdc] CDB: Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.137359] Write(10): 2a 00 01 ab 08 5c 00 3b a4 00 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.137366] blk_update_request: I/O error, dev sdc, sector 223888096 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.176987] sd 3:0:0:0: [sdc] FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.176991] sd 3:0:0:0: [sdc] CDB: Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.176993] Write(10): 2a 00 01 ab 44 00 00 3c 00 00 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.177000] blk_update_request: I/O error, dev sdc, sector 224010240 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.216930] sd 3:0:0:0: [sdc] FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.216935] sd 3:0:0:0: [sdc] CDB: Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.216937] Write(10): 2a 00 01 ab 80 00 00 23 1c 00 Jan 29 12:19:29 lenz-ThinkPad-T440 kernel: [ 599.216943] blk_update_request: I/O error, dev sdc, sector 224133120 This seems to be a regression in the mainline Kernel, as the default kernel (3.13.0-44-generic) performed this dd operation without issues - but it seems to be using a different USB driver for the disk: Jan 29 11:38:13 lenz-ThinkPad-T440 kernel: [ 145.440600] usb 3-1: new SuperSpeed USB device number 5 using xhci_hcd Jan 29 11:38:13 lenz-ThinkPad-T440 kernel: [ 145.457727] usb 3-1: New USB device found, idVendor=04e8, idProduct=6125 Jan 29 11:38:13 lenz-ThinkPad-T440 kernel: [ 145.457737] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Jan 29 11:38:13 lenz-ThinkPad-T440 kernel: [ 145.457741] usb 3-1: Product: D3 Station Jan 29 11:38:13 lenz-ThinkPad-T440 kernel: [ 145.457745] usb 3-1: Manufacturer: Samsung Jan 29 11:38:13 lenz-ThinkPad-T440 kernel: [ 145.457749] usb 3-1: SerialNumber: 00000000011E0A49 Jan 29 11:38:13 lenz-ThinkPad-T440 kernel: [ 145.476665] usb-storage 3-1:1.0: USB Mass Storage device detected Jan 29 11:38:13 lenz-ThinkPad-T440 kernel: [ 145.476777] scsi3 : usb-storage 3-1:1.0 Jan 29 11:38:13 lenz-ThinkPad-T440 kernel: [ 145.477201] usbcore: registered new interface driver usb-storage Jan 29 11:38:14 lenz-ThinkPad-T440 kernel: [ 146.477555] scsi 3:0:0:0: Direct-Access Samsung D3 Station 0202 PQ: 0 ANSI: 6 Jan 29 11:38:14 lenz-ThinkPad-T440 kernel: [ 146.478329] sd 3:0:0:0: Attached scsi generic sg2 type 0 Jan 29 11:38:14 lenz-ThinkPad-T440 kernel: [ 146.479586] sd 3:0:0:0: [sdc] Spinning up disk... Jan 29 11:38:25 lenz-ThinkPad-T440 kernel: [ 151.993125] ......ready Jan 29 11:38:25 lenz-ThinkPad-T440 kernel: [ 157.014200] sd 3:0:0:0: [sdc] 976754645 4096-byte logical blocks: (4.00 TB/3.63 TiB) Jan 29 11:38:25 lenz-ThinkPad-T440 kernel: [ 157.014797] sd 3:0:0:0: [sdc] Write Protect is off Jan 29 11:38:25 lenz-ThinkPad-T440 kernel: [ 157.014807] sd 3:0:0:0: [sdc] Mode Sense: 2b 00 10 08 Jan 29 11:38:25 lenz-ThinkPad-T440 kernel: [ 157.015382] sd 3:0:0:0: [sdc] Write cache: enabled, read cache: enabled, supports DPO and FUA Jan 29 11:38:25 lenz-ThinkPad-T440 kernel: [ 157.015967] sd 3:0:0:0: [sdc] 976754645 4096-byte logical blocks: (4.00 TB/3.63 TiB) Jan 29 11:38:25 lenz-ThinkPad-T440 kernel: [ 157.041599] sdc: sdc1 Jan 29 11:38:25 lenz-ThinkPad-T440 kernel: [ 157.042036] sd 3:0:0:0: [sdc] 976754645 4096-byte logical blocks: (4.00 TB/3.63 TiB) Jan 29 11:38:25 lenz-ThinkPad-T440 kernel: [ 157.043099] sd 3:0:0:0: [sdc] Attached SCSI disk Jan 29 11:38:25 lenz-ThinkPad-T440 kernel: [ 157.375933] EXT4-fs (sdc1): mounted filesystem with ordered data mode. Opts: (null) Another (probably unrelated) observation: even if the file system is just mounted and idle (no processes accessing it), the disk drive LED shows activity. "iostat 3 /dev/sdc" reveals that something seems to be writing to the disk continuously: avg-cpu: %user %nice %system %iowait %steal %idle 2,85 0,00 0,67 1,43 0,00 95,05 Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn sdc 5,33 0,00 4782,67 0 14348 avg-cpu: %user %nice %system %iowait %steal %idle 2,35 0,00 0,84 1,34 0,00 95,47 Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn sdc 5,00 0,00 4781,33 0 14344 avg-cpu: %user %nice %system %iowait %steal %idle 4,85 0,00 0,75 1,34 0,00 93,05 Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn sdc 4,33 0,00 4097,33 0 12292 --- ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 CurrentDesktop: Unity DistroRelease: Ubuntu 14.04 InstallationDate: Installed on 2014-09-15 (136 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) Package: linux (not installed) Tags: trusty Uname: Linux 3.19.0-031900rc6-generic x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip disk docker lpadmin plugdev sambashare sudo _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1415859/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
