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[Launchpad Bug Tracker <1007142@xxxxxxxxxxxxxxxxxx>]

[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

** Changed in: linux (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1007142

Title:
  Unaccounted space loss when formating partition to EXT4

Status in “linux” package in Ubuntu:
  Expired

Bug description:
  For a long time I've had 2 identical drives that I want to migrate
  from NTFS to EXT4. They are the same size, brand..etc. I only used
  them for backup so I alway sync them to duplicate data on them. I have
  formated one to EXT4 reducing the reserved block percentage to 0 (-m
  0) having the following features:

  has_journal ext_attr resize_inode dir_index filetype needs_recovery
  extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink
  extra_isize

  Already after formatting it shows 28GB of used space and it about the same amount of data that I can't copy from the NTFS drive.
  After tuning the filesystem I have done a e2fsck to make sure things are OK. Still, there's ~30GB missing space. When I tried to copy back the data from the NTFS drive to the EXT4 it fails to copy ~ 30GB of data.

  I am running Precise with 3.2.0-24-generic #39-Ubuntu SMP Mon May 21 16:52:17 UTC 2012 x86_64. I will attach the all data from both drives: /dev/sdb1 is the NTFS drive and /dev/sdc1 is the EXT4 drive. I am not sure if this is a normal or a bug but there's ~30GB of unaccounted missing space on the EXT4. Reformatting back to NTFS gives me back those 30GB. I have tried this multiple times.
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu8
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
     Subdevices: 2/2
     Subdevice #0: subdevice #0
     Subdevice #1: subdevice #1
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  alex       2949 F.... pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xfe6dc000 irq 51'
     Mixer name	: 'Analog Devices AD1984A'
     Components	: 'HDA:11d4194a,1028027f,00100400'
     Controls      : 34
     Simple ctrls  : 20
  DistroRelease: Ubuntu 12.04
  HibernationDevice: RESUME=UUID=2c8aae11-d4df-4920-acc5-5041b51e94f0
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
  MachineType: Dell Inc. OptiPlex 760
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic root=UUID=768470c2-a727-44f8-800b-6606c3c5c948 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.2.0-24.39-generic 3.2.16
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-24-generic N/A
   linux-backports-modules-3.2.0-24-generic  N/A
   linux-firmware                            1.79
  RfKill:
   
  SourcePackage: linux
  StagingDrivers: mei
  Tags:  precise staging precise staging
  Uname: Linux 3.2.0-24-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 02/18/2009
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A02
  dmi.board.name: 0G919G
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 16
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA02:bd02/18/2009:svnDellInc.:pnOptiPlex760:pvr:rvnDellInc.:rn0G919G:rvrA00:cvnDellInc.:ct16:cvr:
  dmi.product.name: OptiPlex 760
  dmi.sys.vendor: Dell Inc.

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