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[Erick Brunzell <lbsolost@xxxxxxxxx>]

Would you please see if this is a duplicate of bug #1220165

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https://bugs.launchpad.net/bugs/1229719

Title:
  Error Informing kernel about modifications to partition on saucy
  desktop installation on mac mini 5.1

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  The following error occurred in a manual partitioning test of amd64+mac image of 20130923.2 on Mac mini 5.1
  "Error informing the kernel about modifications to partition /dev/sda2 -Device or resource busy. This means Linux wont know about changes you made to /dev/sda2 until you reboot- so you shouldn't mount it or use it any way before rebooting."

  The following is seen in dmesg
  [  104.483873] EXT3-fs (sda1): error: can't find ext3 filesystem on dev sda1.
  [  104.484261] EXT4-fs (sda1): VFS: Can't find ext4 filesystem
  [  104.484705] FAT-fs (sda1): invalid media value (0x7d)
  [  104.484712] FAT-fs (sda1): Can't find a valid FAT filesystem
  [  104.496625] ISOFS: Unable to identify CD-ROM format.
  [  104.497043] SQUASHFS error: Can't find a SQUASHFS superblock on sda1
  [  104.497420] EXT2-fs (sda1): error: can't find an ext2 filesystem on dev sda1.
  [  104.499045] XFS (sda1): bad magic number
  [  104.499055] ffff88006eb9c000: 52 e8 28 01 74 08 56 be 33 81 e8 4c 01 5e bf f4  R.(.t.V.3..L.^..
  [  104.499061] ffff88006eb9c010: 81 66 8b 2d 83 7d 08 00 0f 84 e9 00 80 7c ff 00  .f.-.}.......|..
  [  104.499065] ffff88006eb9c020: 74 46 66 8b 1d 66 8b 4d 04 66 31 c0 b0 7f 39 45  tFf..f.M.f1...9E
  [  104.499070] ffff88006eb9c030: 08 7f 03 8b 45 08 29 45 08 66 01 05 66 83 55 04  ....E.)E.f..f.U.
  [  104.499076] XFS (sda1): Internal error xfs_sb_read_verify at line 780 of file /build/buildd/linux-3.11.0/fs/xfs/xfs_mount.c.  Caller 0xffffffffa07f6b75
  [  104.499076]
  [  104.499085] CPU: 0 PID: 5 Comm: kworker/0:0H Tainted: GF            3.11.0-8-generic #15-Ubuntu
  [  104.499089] Hardware name: Apple Inc. Macmini5,1/Mac-8ED6AF5B48C039E1, BIOS MM51.88Z.0077.B0F.1110201309 10/20/2011
  [  104.499128] Workqueue: xfslogd xfs_buf_iodone_work [xfs]
  [  104.499134]  0000000000000001 ffff880071c4fd68 ffffffff816f2f71 ffff88006d16f000
  [  104.499142]  ffff880071c4fd80 ffffffffa07f925b ffffffffa07f6b75 ffff880071c4fdb8
  [  104.499149]  ffffffffa07f92b5 0000030c63006183 ffff880070940c00 0000000000000016
  [  104.499156] Call Trace:
  [  104.499170]  [<ffffffff816f2f71>] dump_stack+0x45/0x56
  [  104.499201]  [<ffffffffa07f925b>] xfs_error_report+0x3b/0x40 [xfs]
  [  104.499230]  [<ffffffffa07f6b75>] ? xfs_buf_iodone_work+0x85/0xf0 [xfs]
  [  104.499259]  [<ffffffffa07f92b5>] xfs_corruption_error+0x55/0x80 [xfs]
  [  104.499307]  [<ffffffffa084b413>] xfs_sb_read_verify+0x113/0x130 [xfs]
  [  104.499335]  [<ffffffffa07f6b75>] ? xfs_buf_iodone_work+0x85/0xf0 [xfs]
  [  104.499363]  [<ffffffffa07f6b75>] xfs_buf_iodone_work+0x85/0xf0 [xfs]
  [  104.499372]  [<ffffffff8107cfbc>] process_one_work+0x17c/0x430
  [  104.499379]  [<ffffffff8107dc0c>] worker_thread+0x11c/0x3c0
  [  104.499386]  [<ffffffff8107daf0>] ? manage_workers.isra.24+0x2a0/0x2a0
  [  104.499395]  [<ffffffff81084710>] kthread+0xc0/0xd0
  [  104.499404]  [<ffffffff81084650>] ? kthread_create_on_node+0x120/0x120
  [  104.499414]  [<ffffffff81702d6c>] ret_from_fork+0x7c/0xb0
  [  104.499422]  [<ffffffff81084650>] ? kthread_create_on_node+0x120/0x120
  [  104.499427] XFS (sda1): Corruption detected. Unmount and run xfs_repair
  [  104.499453] XFS (sda1): SB validate failed with error 22.
  ===================================

  Steps:
  1. Start the installation
  2. Go straight to 'Install Ubuntu' ( since live session installation is broken at them moment)
  3. Select 'something else' in the Installation type menu to perform manual partitioning
  4. Select Ext4 file system for /, /boot and /home partitions leaving adequate swap space
  5. Click continue and the above errors will be reported 

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image-3.11.0-8-generic 3.11.0-8.15
  ProcVersionSignature: Ubuntu 3.11.0-8.15-generic 3.11.1
  Uname: Linux 3.11.0-8-generic x86_64
  ApportVersion: 2.12.4-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ubuntu     2695 F.... pulseaudio
                        ubuntu    19520 F.... pulseaudio
  CasperVersion: 1.336
  Date: Tue Sep 24 13:21:17 2013
  IwConfig:
   eth0      no wireless extensions.

   lo        no wireless extensions.
  LiveMediaBuild: Ubuntu 13.10 "Saucy Salamander" - Beta amd64+mac (20130923.2)
  MachineType: Apple Inc. Macmini5,1
  MarkForUpload: True
  ProcEnviron:
   TERM=linux
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: file=/cdrom/preseed/username.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-8-generic N/A
   linux-backports-modules-3.11.0-8-generic  N/A
   linux-firmware                            1.114
  RfKill:
   0: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/20/2011
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MM51.88Z.0077.B0F.1110201309
  dmi.board.asset.tag: Base Board Asset Tag#
  dmi.board.name: Mac-8ED6AF5B48C039E1
  dmi.board.vendor: Apple Inc.
  dmi.board.version: Macmini5,1
  dmi.chassis.type: 16
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-8ED6AF5B48C039E1
  dmi.modalias: dmi:bvnAppleInc.:bvrMM51.88Z.0077.B0F.1110201309:bd10/20/2011:svnAppleInc.:pnMacmini5,1:pvr1.0:rvnAppleInc.:rnMac-8ED6AF5B48C039E1:rvrMacmini5,1:cvnAppleInc.:ct16:cvrMac-8ED6AF5B48C039E1:
  dmi.product.name: Macmini5,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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