yahoo-eng-team team mailing list archive

[Petrut Lucian <lpetrut@xxxxxxxxxxxxxxxxxxxxxx>]

Public bug reported:

When attaching volumes, the Hyper-V driver selects the slot on the SCSI
controller by using the number of drives attached to that controller.

This leads to exceptions when detaching volumes having lower numbered
slots and then attaching a new volume.

Take for example 2 volumes attached which will have 0 and 1 as
controller addresses. If the first one gets detached, the next time
we'll try to attach a volume the controller address 1 will be used (as
it's the number of drives attached to the controller at that time) but
that slot is actually uesd, so it will raise an exception.

** Affects: nova
     Importance: Undecided
         Status: New


** Tags: driver hyper-v

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https://bugs.launchpad.net/bugs/1329764

Title:
  Hyper-V volume attach issue: wrong SCSI slot is selected

Status in OpenStack Compute (Nova):
  New

Bug description:
  When attaching volumes, the Hyper-V driver selects the slot on the
  SCSI controller by using the number of drives attached to that
  controller.

  This leads to exceptions when detaching volumes having lower numbered
  slots and then attaching a new volume.

  Take for example 2 volumes attached which will have 0 and 1 as
  controller addresses. If the first one gets detached, the next time
  we'll try to attach a volume the controller address 1 will be used (as
  it's the number of drives attached to the controller at that time) but
  that slot is actually uesd, so it will raise an exception.

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