[Bug 1525590] [NEW] casper-snapshot is not working - error stdin: Not a typewrite

[harish2704]

Public bug reported:

I tried to include a casper-snapshot to my live ubuntu usb pendrive.
But it is not taking.
I tried to boot using DEBUG parameter on
and found that, Everything happens correctly but, it fails in the end of that work-flow because of folloing error

* snap-shot image is found
* loop device is set up
* But when calling `fs_size()` with newly set up loop-device,  fs_size function mounts this loopdevice and unmounts it. The problem is     unmount command also detaches the loopdevice.
* This will end up with Error 'stdin: Not a typewriter' while calling fstype command.


We need to fix fs_size() function in casper-helpers with '-D' option

** Affects: casper (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1525590

Title:
  casper-snapshot is not working - error stdin: Not a typewrite

Status in casper package in Ubuntu:
  New

Bug description:
  I tried to include a casper-snapshot to my live ubuntu usb pendrive.
  But it is not taking.
  I tried to boot using DEBUG parameter on
  and found that, Everything happens correctly but, it fails in the end of that work-flow because of folloing error

  * snap-shot image is found
  * loop device is set up
  * But when calling `fs_size()` with newly set up loop-device,  fs_size function mounts this loopdevice and unmounts it. The problem is     unmount command also detaches the loopdevice.
  * This will end up with Error 'stdin: Not a typewriter' while calling fstype command.

  
  We need to fix fs_size() function in casper-helpers with '-D' option

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