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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1267712

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

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

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https://bugs.launchpad.net/bugs/1267712

Title:
  ubuntu guest's file system becoming read only

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  9.3.189.114 (root/.pasroot) (Host Machine)
  Run the follwoing command to go to the guest victim machine from (/var/lib/libvirt/images/jagan/new_ubuntu_alpha1)

  qemu-system-ppc64 -enable-kvm -M pseries -cpu POWER8 -smp 1 -m 10G
  -nographic -nodefaults -monitor stdio -serial pty -append
  "root=/dev/sda" -kernel trusty-server-cloudimg-ppc64el-vmlinuz-generic
  -device spapr-vscsi -device spapr-
  vlan,netdev=net0,mac=6c:ae:8b:69:16:15 -netdev
  bridge,br=virbr0,id=net0 -drive file=trusty-server-cloudimg-
  ppc64el.img.qcow2

  after this command you will get the screen number.
  example:

  QEMU 1.6.0 monitor - type 'help' for more information
  (qemu) char device redirected to /dev/pts/16 (label serial0)

  Then open another host session and execute the below command

  # screen /dev/pts/16
  (qemu)

  Here the screen number is /dev/pts/16

  -->>Then you will get a blank screen so press ENTER key.

  The guest machine login: ubuntu/passw0rd

  Then do --->sudo -i

  Environment:
  ===========
  Host: Power8
  Guest : ubuntu hosted on Power8

  The issue:
  ======
  After logging into the guest some times it becomes read - only file system.

  Description:
  ===========

  Here i am not able to create directory or a file.

  root@ubuntu:/opt/ltp# cat /etc/issue
  Ubuntu Trusty Tahr (development branch) \n \l=====================>>ubuntu guest

  root@ubuntu:~# ifconfig
  eth0      Link encap:Ethernet  HWaddr 6c:ae:8b:69:16:15
            inet addr:192.168.122.131  Bcast:192.168.122.255  Mask:255.255.255.0
            inet6 addr: fe80::6eae:8bff:fe69:1615/64 Scope:Link
            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
            RX packets:72 errors:0 dropped:4 overruns:0 frame:0
            TX packets:43 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:6764 (6.7 KB)  TX bytes:3914 (3.9 KB)
            Interrupt:22

  lo        Link encap:Local Loopback
            inet addr:127.0.0.1  Mask:255.0.0.0
            inet6 addr: ::1/128 Scope:Host
            UP LOOPBACK RUNNING  MTU:65536  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:0
            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

  
  root@ubuntu:/opt/ltp# ./runltp -f timers -p -l timers.log -o timers.out
  cat: /opt/ltp/Version: No such file or directory
  INFO: creating /opt/ltp/results directory
  mktemp: failed to create directory via template â/tmp/ltp-XXXXXXXXXXâ: Read-only file system======>>error
  FATAL: Unable to make temporary directory:

  root@ubuntu:/opt/ltp# df -k
  Filesystem     1K-blocks    Used Available Use% Mounted on
  /dev/sda        51573372 1303052  47632556   3% /
  none                   4       0         4   0% /sys/fs/cgroup
  devtmpfs         5161908     296   5161612   1% /dev
  none             1032440     184   1032256   1% /run
  none                5120       0      5120   0% /run/lock
  none             5162192       0   5162192   0% /run/shm
  none              102400       0    102400   0% /run/user

  root@ubuntu:/opt/ltp# mkdir -m 777 jagan
  mkdir: cannot create directory âjaganâ: Read-only file system========>>error

  root@ubuntu:/opt/ltp# touch jagan
  touch: cannot touch âjaganâ: Read-only file system============>>error

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