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[Oibaf <1218278@xxxxxxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1246664 ***
    https://bugs.launchpad.net/bugs/1246664

** This bug is no longer a duplicate of bug 1217189
   Buffer I/O error on device zram0
** This bug has been marked a duplicate of bug 1246664
   "Buffer I/O error on device zram0, logical block 515067"

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https://bugs.launchpad.net/bugs/1218278

Title:
  When creating a swap device using zram I get Buffer I/O errors

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  I use zram as swap device, but get Buffer I/O errors when creating a
  swap device.

  1. modprobe zram
  2. echo 2097152000 > /sys/block/zram0/disksize
  3. mkswap /dev/zram0

  tail /varlog/syslog

  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.003716] Buffer I/O error on device zram0, logical block 511999
  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.005792] Buffer I/O error on device zram0, logical block 511999
  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.007918] Buffer I/O error on device zram0, logical block 511999
  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.009930] Buffer I/O error on device zram0, logical block 511999
  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.011965] Buffer I/O error on device zram0, logical block 511999
  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.012917] Buffer I/O error on device zram0, logical block 511999
  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.013793] Buffer I/O error on device zram0, logical block 511999
  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.014680] Buffer I/O error on device zram0, logical block 511999
  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.015542] Buffer I/O error on device zram0, logical block 511999
  Aug 29 12:07:01 ubz10035sev kernel: [ 1044.016395] Buffer I/O error on device zram0, logical block 511999

  cat /proc/version_signature
  Ubuntu 3.8.0-29.42-generic 3.8.13.
  ---
  ApportVersion: 2.9.2-0ubuntu8.3
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/hwC0D3', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D3p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
  DistroRelease: Ubuntu 13.04
  MachineType: Hewlett-Packard HP Compaq 8100 Elite CMT PC
  MarkForUpload: True
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: ro initrd=initrd.img nbdroot=10.7.28.49:9577 nbdswap=10.7.28.49:9573 clientid=lin BOOT_IMAGE=vmlinuz
  ProcVersionSignature: Ubuntu 3.8.0-29.42-generic 3.8.13.5
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RfKill:

  Tags:  raring
  Uname: Linux 3.8.0-29-generic x86_64
  UpgradeStatus: Upgraded to raring on 2013-07-09 (51 days ago)
  UserGroups: admin sudo
  WifiSyslog:

  dmi.bios.date: 12/16/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: 786H1 v01.02
  dmi.board.asset.tag: 11618
  dmi.board.name: 304Bh
  dmi.board.vendor: Hewlett-Packard
  dmi.chassis.asset.tag: 11618
  dmi.chassis.type: 6
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvr786H1v01.02:bd12/16/2009:svnHewlett-Packard:pnHPCompaq8100EliteCMTPC:pvr:rvnHewlett-Packard:rn304Bh:rvr:cvnHewlett-Packard:ct6:cvr:
  dmi.product.name: HP Compaq 8100 Elite CMT PC
  dmi.sys.vendor: Hewlett-Packard

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