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[Abhishek Gupta <abgupta@xxxxxxxxxxxxx>]

Console messages via serial log:

[    6.634334] scsi2 : storvsc_host_t
[    6.637240] scsi 2:0:0:0: Direct-Access     Msft     Virtual Disk     1.0  PQ
: 0 ANSI: 4
[    6.643174] sd 2:0:0:0: [sda] 20971520 512-byte logical blocks: (10.7 GB/10.0
GiB)
[    6.648714] sd 2:0:0:0: Attached scsi generic sg1 type 0
[    6.652554] sd 2:0:0:0: [sda] Write Protect is off
[    6.656302] sd 2:0:0:0: [sda] Mode Sense: 0f 00 10 00
[    6.660788] sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, supports DPO and FUA
[    6.666962] hv_storvsc vmbus_0_1: cmd 0xa3 scsi status 0x2 srb status 0x4
[    6.672036] scsi3 : storvsc_host_t
[    6.674254] scsi scan: INQUIRY result too short (5), using 36
[    6.678193] scsi scan: INQUIRY result too short (5), using 36
[   16.675250] hv_storvsc vmbus_0_1: cmd 0xa3 scsi status 0x2 srb status 0x4
[   26.686021] hv_storvsc vmbus_0_1: cmd 0xa3 scsi status 0x2 srb status 0x4


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

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https://bugs.launchpad.net/bugs/1234417

Title:
  Ubuntu 13.10 VHD failing to boot on Windows Server 2008 R2

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Hi folks,

  It appears that the Windows 2008 R2 Hyper-V host is unable to handle
  the following scsi command:

  MAINTENANCE_IN (scsi command 0xa3) and that is the cause for this
  problem.

  Due to this reason, we are unable to boot an Ubuntu 13.10 virtual
  machine on Hyper-V Server 2008 R2. Please could you help us identify
  what component is using this command and how would it react if we fail
  to serve it?

  Is there some other better fix for this? This seems to fail only for
  Ubuntu 13.10 and other distributions including Linux-next seem to do
  fine.

  Please advise.
  Thanks,
  Abhishek

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