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[Juliane Aulbach <juliane.aulbach@xxxxxxxxxx>]

Public bug reported:

Issue
=====

When ejecting virtio-scsi attached devices like the config-drive 
the mount breaks. 

The mount point delivers the following information:
[27289.999820] sr 3:0:0:4: [sr0] Device not ready
[27289.999832] sr 3:0:0:4: [sr0]  
[27289.999834] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[27289.999836] sr 3:0:0:4: [sr0]  
[27289.999838] Sense Key : Not Ready [current] 
[27289.999840] sr 3:0:0:4: [sr0]  
[27289.999844] Add. Sense: Medium not present
[27289.999846] sr 3:0:0:4: [sr0] CDB: 
[27289.999847] Read(10): 28 00 00 00 00 1c 00 00 01 00
[27289.999853] end_request: I/O error, dev sr0, sector 112

Inserting the device again is sometimes not possible.


Steps to reproduce
==================

* Create instance with config drive attached on a z node
* Mount config drive (sr0) 
* Eject config drive from the host
   virsh change-media <domain id> /opt/stack/data/nova/instances/<instance id>/disk.config --eject
* Take a look at the mount point

Expected behavior
=================

Device ejected. Mount point empty. Inserting config drive again is
possible.

Actual behavior
===============

Two ejects necessary to eject device. Mount point breaks. Inserting
config drive again is sometimes not possible. Sometimes it needs two
inserts.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1443501

Title:
  Ejecting virtio-scsi attached devices causes inconsistent states

Status in OpenStack Compute (Nova):
  New

Bug description:
  Issue
  =====

  When ejecting virtio-scsi attached devices like the config-drive 
  the mount breaks. 

  The mount point delivers the following information:
  [27289.999820] sr 3:0:0:4: [sr0] Device not ready
  [27289.999832] sr 3:0:0:4: [sr0]  
  [27289.999834] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
  [27289.999836] sr 3:0:0:4: [sr0]  
  [27289.999838] Sense Key : Not Ready [current] 
  [27289.999840] sr 3:0:0:4: [sr0]  
  [27289.999844] Add. Sense: Medium not present
  [27289.999846] sr 3:0:0:4: [sr0] CDB: 
  [27289.999847] Read(10): 28 00 00 00 00 1c 00 00 01 00
  [27289.999853] end_request: I/O error, dev sr0, sector 112

  Inserting the device again is sometimes not possible.

  
  Steps to reproduce
  ==================

  * Create instance with config drive attached on a z node
  * Mount config drive (sr0) 
  * Eject config drive from the host
     virsh change-media <domain id> /opt/stack/data/nova/instances/<instance id>/disk.config --eject
  * Take a look at the mount point

  Expected behavior
  =================

  Device ejected. Mount point empty. Inserting config drive again is
  possible.

  Actual behavior
  ===============

  Two ejects necessary to eject device. Mount point breaks. Inserting
  config drive again is sometimes not possible. Sometimes it needs two
  inserts.

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