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[Bug 1526537] Re: blk_update_request: I/O error

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: hakuna_matata <hakuna1234567890@xxxxxxxxxxx>
Date: Mon, 11 Apr 2016 18:51:49 -0000
Reply-to: Bug 1526537 <1526537@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
I can confirm that the error messages on Ubuntu 16.04 (daily) still
exist but it seems that it is not as bad as it looks.

I followed the steps which Marcin described in comment #16. Instead of

> Write some data on backing file via loop device
> dd if=/dev/zero of=/mnt/Test.file bs=1M count=512

I copied a known iso file to the created loop device
dd if=lubuntu-14.04.4-desktop-amd64.iso of=/mnt/Test.file bs=1M

I got also some error messages as described in previous comments but
md5sum said

md5sum lubuntu-14.04.4-desktop-amd64.iso && md5sum /mnt/Test.file

0b0fc8652afe0761edc3ed33e1b199f0  lubuntu-14.04.4-desktop-amd64.iso
0b0fc8652afe0761edc3ed33e1b199f0  /mnt/Test.file

Then I unmounted the test image and checked it for errors.

umount /mnt/
fsck -pvcf ./Test.img

...and I got:

fsck from util-linux 2.27.1
./Test.img: Updating bad block inode.

          12 inodes used (0.02%, out of 65536)
           0 non-contiguous files (0.0%)
           0 non-contiguous directories (0.0%)
             # of inodes with ind/dind/tind blocks: 0/0/0
             Extent depth histogram: 3/1
      201308 blocks used (76.79%, out of 262144)
           0 bad blocks
           1 large file

           1 regular file
           2 directories
           0 character device files
           0 block device files
           0 fifos
           0 links
           0 symbolic links (0 fast symbolic links)
           0 sockets
------------
           3 files

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https://bugs.launchpad.net/bugs/1526537

Title:
  blk_update_request: I/O error

Status in linux package in Ubuntu:
  Expired

Bug description:
  
  On my laptop I am using the ubuntu in persistent mode with a backing files: casper-rw, home-rw. For some time in the new editions of ubuntu [ 15.04 / 15.10 / 16.04 daily (15.12) ] I meet with error: blk_update_request: I/O error, dev loop ... , sector ... .  am sure it is not a hardware problem. Please, could you try reproduce this issue 

  `/proc/cmdline`

  BOOT_IMAGE=/Ubuntu/16.04/desktop-amd64/casper/vmlinuz.efi append
  noprompt boot=casper intel_iommu=on toram showmounts persistent-
  path=/Ubuntu/16.04/desktop-amd64 persistent iso-
  scan/filename=/Ubuntu/16.04/xenial-desktop-amd64.iso cdrom-detect/try-
  usb=true

  `kern.log`

  Dec 15 21:49:25 ThinkPad kernel: [   11.507021] Bluetooth: BNEP socket layer initialized
  Dec 15 21:49:25 ThinkPad kernel: [   11.513208] blk_update_request: I/O error, dev loop0, sector 1376280
  Dec 15 21:49:25 ThinkPad kernel: [   11.544996] blk_update_request: I/O error, dev loop0, sector 1364008
  Dec 15 21:49:26 ThinkPad kernel: [   11.655626] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
  Dec 15 21:49:26 ThinkPad kernel: [   11.656563] IPv6: ADDRCONF(NETDEV_UP): enp0s25: link is not ready
  Dec 15 21:49:26 ThinkPad kernel: [   11.884604] IPv6: ADDRCONF(NETDEV_UP): enp0s25: link is not ready
  Dec 15 21:49:26 ThinkPad kernel: [   12.080950] usbcore: registered new interface driver cdc_wdm
  Dec 15 21:49:26 ThinkPad kernel: [   12.089352] qmi_wwan 2-1.4:1.0: cdc-wdm0: USB WDM device
  Dec 15 21:49:26 ThinkPad kernel: [   12.089629] qmi_wwan 2-1.4:1.0 wwan0: register 'qmi_wwan' at usb-0000:00:1d.0-1.4, WWAN/QMI device, 86:f3:f1:57:ac:04
  Dec 15 21:49:26 ThinkPad kernel: [   12.089851] usbcore: registered new interface driver qmi_wwan
  Dec 15 21:49:27 ThinkPad kernel: [   13.014113] blk_update_request: I/O error, dev loop2, sector 776360
  Dec 15 21:49:27 ThinkPad kernel: [   13.026856] blk_update_request: I/O error, dev loop2, sector 777792
  Dec 15 21:49:27 ThinkPad kernel: [   13.406901] e1000e: enp0s25 NIC Link is Up 100 Mbps Full Duplex, Flow Control: Rx/Tx
  Dec 15 21:49:27 ThinkPad kernel: [   13.406909] e1000e 0000:00:19.0 enp0s25: 10/100 speed: disabling TSO
  Dec 15 21:49:27 ThinkPad kernel: [   13.406948] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s25: link becomes ready
  Dec 15 21:49:27 ThinkPad kernel: [   13.411598] blk_update_request: I/O error, dev loop0, sector 1364024
  Dec 15 21:49:27 ThinkPad kernel: [   13.525480] blk_update_request: I/O error, dev loop2, sector 778064
  Dec 15 21:49:28 ThinkPad kernel: [   13.733896] Bluetooth: RFCOMM TTY layer initialized
  Dec 15 21:49:28 ThinkPad kernel: [   13.733906] Bluetooth: RFCOMM socket layer initialized
  Dec 15 21:49:28 ThinkPad kernel: [   13.733912] Bluetooth: RFCOMM ver 1.11
  Dec 15 21:49:28 ThinkPad kernel: [   13.758583] blk_update_request: I/O error, dev loop0, sector 1360048
  Dec 15 21:49:28 ThinkPad kernel: [   13.765377] blk_update_request: I/O error, dev loop0, sector 1364032
  Dec 15 21:49:28 ThinkPad kernel: [   13.778920] blk_update_request: I/O error, dev loop0, sector 1364040
  Dec 15 21:49:28 ThinkPad kernel: [   13.785037] blk_update_request: I/O error, dev loop0, sector 1364048
  Dec 15 21:49:28 ThinkPad gnome-session-binary[3083]: Entering running state
  Dec 15 21:49:37 ThinkPad kernel: [   22.759620] blk_update_request: 15 callbacks suppressed
  Dec 15 21:49:37 ThinkPad kernel: [   22.759623] blk_update_request: I/O error, dev loop0, sector 1364072
  Dec 15 21:49:37 ThinkPad kernel: [   22.803618] hidraw: raw HID events driver (C) Jiri Kosina
  Dec 15 21:49:37 ThinkPad kernel: [   22.806751] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
  Dec 15 21:49:37 ThinkPad kernel: [   22.806758] Bluetooth: HIDP socket layer initialized
  Dec 15 21:49:37 ThinkPad kernel: [   22.811095] hid-generic 0005:0D62:01BF.0001: unknown main item tag 0x0
  Dec 15 21:49:37 ThinkPad kernel: [   22.811211] input: Bluetooth Mouse as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/bluetooth/hci0/hci0:11/0005:0D62:01BF.0001/input/input17
  Dec 15 21:49:37 ThinkPad kernel: [   22.811384] hid-generic 0005:0D62:01BF.0001: input,hidraw0: BLUETOOTH HID v1.39 Mouse [ Bluetooth Mouse] on ec:55:f9:fa:c6:1d
  Dec 15 21:50:41 ThinkPad kernel: [   86.683594] blk_update_request: I/O error, dev loop2, sector 2343552
  Dec 15 21:50:41 ThinkPad kernel: [   86.690626] blk_update_request: I/O error, dev loop2, sector 2339064
  Dec 15 21:50:41 ThinkPad kernel: [   86.703606] blk_update_request: I/O error, dev loop2, sector 2057600
  Dec 15 21:50:41 ThinkPad kernel: [   86.713265] blk_update_request: I/O error, dev loop2, sector 2343592
  Dec 15 21:50:41 ThinkPad kernel: [   86.715556] blk_update_request: I/O error, dev loop2, sector 2057608
  Dec 15 21:50:41 ThinkPad kernel: [   86.861531] blk_update_request: I/O error, dev loop2, sector 2339104
  Dec 15 21:50:42 ThinkPad kernel: [   87.954169] blk_update_request: I/O error, dev loop2, sector 2343632
  --- 
  ApportVersion: 2.19.3-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  marcin     3226 F.... pulseaudio
  CasperVersion: 1.366
  DistroRelease: Ubuntu 16.04
  LiveMediaBuild: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20151202)
  MachineType: LENOVO 4291PR5
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/Ubuntu/16.04/desktop-amd64/casper/vmlinuz.efi append noprompt boot=casper intel_iommu=on toram showmounts persistent-path=/Ubuntu/16.04/desktop-amd64 persistent userfullname=MarcinCelebucki username=marcin hostname=hostname iso-scan/filename=/Ubuntu/16.04/xenial-desktop-amd64.iso cdrom-detect/try-usb=true
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-19-generic N/A
   linux-backports-modules-4.2.0-19-generic  N/A
   linux-firmware                            1.154
  Tags:  xenial
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  Uname: Linux 4.2.0-19-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 05/14/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8DET70WW (1.40 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 4291PR5
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr8DET70WW(1.40):bd05/14/2015:svnLENOVO:pn4291PR5:pvrThinkPadX220:rvnLENOVO:rn4291PR5:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 4291PR5
  dmi.product.version: ThinkPad X220
  dmi.sys.vendor: LENOVO

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References

[Bug 1526537] [NEW] blk_update_request: I/O error
From: Marcin, 2015-12-15