[Qemu-devel] [Bug 1367365] [NEW] qemu-img fixed vhd issues

[Qemu-devel] [Bug 1367365] [NEW] qemu-img fixed vhd issues

[Petrut Lucian]

Public bug reported:

qemu-img returns fixed vhd images file format to be raw.

This happens because only the header is seeked for image signatures when
getting the image format. In fact, unlike dynamic vhd images,
differencing vhds don't have the footer copied in the header.

An easy fix would be to just search the last 512B for the 'conectix'
signature.

Also, the fixed vhds created by qemu-img seem to be corrupted from
Powershell POV.

** Affects: qemu
     Importance: Undecided
         Status: New


** Tags: qemu-img vhd vpc

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1367365

Title:
  qemu-img fixed vhd issues

Status in QEMU:
  New

Bug description:
  qemu-img returns fixed vhd images file format to be raw.

  This happens because only the header is seeked for image signatures
  when getting the image format. In fact, unlike dynamic vhd images,
  differencing vhds don't have the footer copied in the header.

  An easy fix would be to just search the last 512B for the 'conectix'
  signature.

  Also, the fixed vhds created by qemu-img seem to be corrupted from
  Powershell POV.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1367365/+subscriptions

[Qemu-devel] [Bug 1367365] Re: qemu-img fixed vhd issues

[Thomas Huth]

Triaging old bug tickets... can you still reproduce this issue with the
latest version of QEMU? Or could we close this ticket nowadays?
Otherwise, can you provide some test images or a description how to
create such images?

** Changed in: qemu
       Status: New => Incomplete

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1367365

Title:
  qemu-img fixed vhd issues

Status in QEMU:
  Incomplete

Bug description:
  qemu-img returns fixed vhd images file format to be raw.

  This happens because only the header is seeked for image signatures
  when getting the image format. In fact, unlike dynamic vhd images,
  differencing vhds don't have the footer copied in the header.

  An easy fix would be to just search the last 512B for the 'conectix'
  signature.

  Also, the fixed vhds created by qemu-img seem to be corrupted from
  Powershell POV.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1367365/+subscriptions

[Qemu-devel] [Bug 1367365] Re: qemu-img fixed vhd issues

[Zixuan Wang]

Yes I can reproduce this issue on Windows 10 with newest version of QEMU
(until 03/28/2018)

I've posted my way of reproduce in a new bug issue:
`#1759522 windows qemu-img create vpc/vhdx error`

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1367365

Title:
  qemu-img fixed vhd issues

Status in QEMU:
  Incomplete

Bug description:
  qemu-img returns fixed vhd images file format to be raw.

  This happens because only the header is seeked for image signatures
  when getting the image format. In fact, unlike dynamic vhd images,
  differencing vhds don't have the footer copied in the header.

  An easy fix would be to just search the last 512B for the 'conectix'
  signature.

  Also, the fixed vhds created by qemu-img seem to be corrupted from
  Powershell POV.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1367365/+subscriptions

[Qemu-devel] [Bug 1367365] Re: qemu-img fixed vhd issues

[Thomas Huth]

** Changed in: qemu
       Status: Incomplete => Triaged

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1367365

Title:
  qemu-img fixed vhd issues

Status in QEMU:
  Triaged

Bug description:
  qemu-img returns fixed vhd images file format to be raw.

  This happens because only the header is seeked for image signatures
  when getting the image format. In fact, unlike dynamic vhd images,
  differencing vhds don't have the footer copied in the header.

  An easy fix would be to just search the last 512B for the 'conectix'
  signature.

  Also, the fixed vhds created by qemu-img seem to be corrupted from
  Powershell POV.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1367365/+subscriptions

[Qemu-devel] [Bug 1367365] Re: qemu-img fixed vhd issues

[Zixuan Wang]

Sorry for the mistaken operation (changed to confirmed), I didn't mean
to change the status

** Changed in: qemu
       Status: Triaged => Confirmed

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1367365

Title:
  qemu-img fixed vhd issues

Status in QEMU:
  Confirmed

Bug description:
  qemu-img returns fixed vhd images file format to be raw.

  This happens because only the header is seeked for image signatures
  when getting the image format. In fact, unlike dynamic vhd images,
  differencing vhds don't have the footer copied in the header.

  An easy fix would be to just search the last 512B for the 'conectix'
  signature.

  Also, the fixed vhds created by qemu-img seem to be corrupted from
  Powershell POV.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1367365/+subscriptions

[Bug 1367365] Re: qemu-img fixed vhd issues

[Thomas Huth]

This is an automated cleanup. This bug report has been moved to QEMU's
new bug tracker on gitlab.com and thus gets marked as 'expired' now.
Please continue with the discussion here:

 https://gitlab.com/qemu-project/qemu/-/issues/107


** Changed in: qemu
       Status: Confirmed => Expired

** Bug watch added: gitlab.com/qemu-project/qemu/-/issues #107
   https://gitlab.com/qemu-project/qemu/-/issues/107

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1367365

Title:
  qemu-img fixed vhd issues

Status in QEMU:
  Expired

Bug description:
  qemu-img returns fixed vhd images file format to be raw.

  This happens because only the header is seeked for image signatures
  when getting the image format. In fact, unlike dynamic vhd images,
  differencing vhds don't have the footer copied in the header.

  An easy fix would be to just search the last 512B for the 'conectix'
  signature.

  Also, the fixed vhds created by qemu-img seem to be corrupted from
  Powershell POV.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1367365/+subscriptions