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Bug 1145916

Summary: virt-v2v fails to convert win7 guest
Product: Red Hat Enterprise Linux 7 Reporter: zhoujunqin <juzhou>
Component: libguestfsAssignee: Richard W.M. Jones <rjones>
Status: CLOSED ERRATA QA Contact: Virtualization Bugs <virt-bugs>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.1CC: codong, dyuan, mbooth, mzhan, ptoscano, tzheng, vnarayan
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: V2V
Fixed In Version: libguestfs-1.27.64-1.1.el7 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2015-03-05 13:45:33 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
screenshot for the two windows guest
none
screenshot of win7 64 BSOD
none
screenshot of win7 32 BSOD
none
the log file when converting xen-hvm-win7-x86_64 using -v -x none

Description zhoujunqin 2014-09-24 06:32:57 UTC 
Description of problem:
virt-v2v fails to convert win7 guest

Version-Release number of selected component (if applicable):
virt-v2v-1.27.53-1.1.el7.x86_64
libguestfs-1.27.53-1.1.el7.x86_64
libguestfs-winsupport-7.1-4.el7.x86_64
virtio-win-1.7.2-1.el7.noarch

How reproducible:
100%

Steps to Reproduce:
1. Prepare a windows guest.
# virsh -c xen+ssh://10.66.106.64 list --all
 Id    Name                           State
----------------------------------------------------
 -     xen-hvm-win7-x86_64            shut off

2. Use virt-v2v to convert guest from xen server.
# virt-v2v -ic xen+ssh://10.66.106.64 -os default xen-hvm-win7-x86_64 -of qcow2
[   0.0] Opening the source -i libvirt -ic xen+ssh://10.66.106.64 xen-hvm-win7-x86_64
[  16.0] Creating an overlay to protect the source from being modified
[  30.0] Opening the overlay
[  48.0] Initializing the target -o libvirt -os default
[  48.0] Inspecting the overlay
[  54.0] Checking for sufficient free disk space in the guest
[  54.0] Estimating space required on target for each disk
[  54.0] Converting Windows 7 Ultimate to run on KVM
virt-v2v: error: libguestfs error: upload: /Windows/Drivers/VirtIO: Is a
directory

If reporting bugs, run virt-v2v with debugging enabled and include the
complete output:

  virt-v2v -v -x [...]


Actual results:
virt-v2v failes to convert win7 guest

Expected results:
virt-v2v can convert win7 guest successfully.

Additional info:
Also met this error When converting other kind windows guest:  Win2008R2, Win2008, Win2003
Comment 2 Richard W.M. Jones 2014-09-24 17:50:13 UTC 
Should be fixed in >= 1.27.54:

https://github.com/libguestfs/libguestfs/commit/97b96af54c5fc47bca2ea8f87d179a8b4d9e5242
Comment 4 zhoujunqin 2014-09-25 06:33:59 UTC 
I can reproduce this issue as bug description.
And try to verify with new build:

libguestfs-1.27.54-1.1.el7.x86_64
virt-v2v-1.27.54-1.1.el7.x86_64
libguestfs-winsupport-7.1-4.el7.x86_64
virtio-win-1.7.2-1.el7.noarch

steps:
1. Prepare a windows guest.
# virsh -c xen+ssh://10.66.106.64 list --all
 Id    Name                           State
----------------------------------------------------
 -     xen-hvm-win7-x86_64            shut off

2. Use virt-v2v to convert guest from xen server
# virt-v2v -ic xen+ssh://10.66.106.64 -os default xen-hvm-win7-x86_64 -of qcow2
[   0.0] Opening the source -i libvirt -ic xen+ssh://10.66.106.64 xen-hvm-win7-x86_64
[  17.0] Creating an overlay to protect the source from being modified
[  35.0] Opening the overlay
[  57.0] Initializing the target -o libvirt -os default
[  57.0] Inspecting the overlay
[  63.0] Checking for sufficient free disk space in the guest
[  63.0] Estimating space required on target for each disk
[  63.0] Converting Windows 7 Ultimate to run on KVM
This guest has virtio drivers installed.
[  64.0] Mapping filesystem data to avoid copying unused and blank areas
[  67.0] Closing the overlay
[  67.0] Copying disk 1/1 to /var/lib/libvirt/images/xen-hvm-win7-x86_64-sda (qcow2)
    (100.00/100%)
[ 351.0] Creating output metadata
Pool default refreshed

Domain xen-hvm-win7-x86_64 defined from /tmp/v2vlibvirt88307e.xml

[ 352.0] Finishing off

Result: conversion is successful, but failed to login windows guest.
for xen-hvm-win7-x86_64 and xen-hvm-win2008r2-x86_64 they fails at the "Windows Error Recovery" page, for details please see screenshot, thanks.
So refer to the above comments,move the bug back to ASSIGNED.
Comment 5 zhoujunqin 2014-09-25 06:35:09 UTC 
Created attachment 940982 [details]
screenshot for the two windows guest
Comment 6 Richard W.M. Jones 2014-09-25 16:01:56 UTC 
Yes, unfortunately I am able to reproduce this.
Comment 7 tingting zheng 2014-09-26 02:41:43 UTC 
Created attachment 941356 [details]
screenshot of win7 64 BSOD
Comment 8 tingting zheng 2014-09-26 02:42:12 UTC 
Created attachment 941357 [details]
screenshot of win7 32 BSOD
Comment 9 tingting zheng 2014-09-26 02:42:48 UTC 
For win 7 32 guest,it also failed with BSOD,see screenshot attached in comment 8.
Comment 10 zhoujunqin 2014-09-26 03:21:36 UTC 
Created attachment 941371 [details]
the log file when converting xen-hvm-win7-x86_64 using -v -x

using -v -x to get detail log when conversion:
# virt-v2v -ic xen+ssh://10.66.106.64 -os default xen-hvm-win7-x86_64 -of qcow2 -v -x |& tee xen-hvm-win7-x86_64.log

but the original log file xen-hvm-win7-x86_64.log is too large, cut part of it called "win7_conversion_log", at last it hangs at here:
.....
hivex: hivex_open: used block id 118,107 (vk) at 0x1966f60 size 40
hivex: hivex_open: used block id 66,0 (B.) at 0x1966f88 size 16
hivex: hivex_open: used block id 248,94 (.^) at 0x1966f98 size 16
hivex: hivex_open: used block id 118,107 (vk) at 0x1966fa8 size 24
hivex: hivex_open: used block id 76,0 (L.) at 0x1966fc0 size 48
hivex: hivex_open: used block id 168,95 (._) at 0x1966ff0 size 16
hivex: hive
Comment 11 Richard W.M. Jones 2014-09-26 09:46:24 UTC 
(In reply to zhoujunqin from comment #10)
> Created attachment 941371 [details]
> the log file when converting xen-hvm-win7-x86_64 using -v -x
> 
> using -v -x to get detail log when conversion:
> # virt-v2v -ic xen+ssh://10.66.106.64 -os default xen-hvm-win7-x86_64 -of
> qcow2 -v -x |& tee xen-hvm-win7-x86_64.log
> 
> but the original log file xen-hvm-win7-x86_64.log is too large, cut part of
> it called "win7_conversion_log", at last it hangs at here:
> .....
> hivex: hivex_open: used block id 118,107 (vk) at 0x1966f60 size 40
> hivex: hivex_open: used block id 66,0 (B.) at 0x1966f88 size 16
> hivex: hivex_open: used block id 248,94 (.^) at 0x1966f98 size 16
> hivex: hivex_open: used block id 118,107 (vk) at 0x1966fa8 size 24
> hivex: hivex_open: used block id 76,0 (L.) at 0x1966fc0 size 48
> hivex: hivex_open: used block id 168,95 (._) at 0x1966ff0 size 16
> hivex: hive

Hanging issue is a different bug.  This bug is about conversion
failures of Windows 7 guests.
Comment 12 Richard W.M. Jones 2014-09-26 14:56:46 UTC 
I've done a huge amount of investigation and have come to some
conclusions:

It looks as if viostor.sys is being installed correctly by virt-v2v,
the registry changes being made are correct, fstrim is correct, and
there is no regression in ntfs-3g.

What stops it from booting appears to be a change or bug in qemu 2.1.0
which is fixed in qemu 2.1.1.  Just looking through the changelog, my
best bet is:

commit e43c0b2ea5574efb0bedebf6a7d05916eefeba52
Author: Michael S. Tsirkin <mst>
Date:   Thu Sep 11 18:45:33 2014 +0200

    virtio-pci: enable bus master for old guests

(Note: This is not in upstream qemu 2.1.1, but it is included in Fedora)

So I believe this is a qemu bug.
Comment 13 Richard W.M. Jones 2014-09-26 15:40:24 UTC 
(In reply to Richard W.M. Jones from comment #12)
> commit e43c0b2ea5574efb0bedebf6a7d05916eefeba52
> Author: Michael S. Tsirkin <mst>
> Date:   Thu Sep 11 18:45:33 2014 +0200
> 
>     virtio-pci: enable bus master for old guests

It is NOT this patch.  However it's still something in qemu ...
Comment 14 Richard W.M. Jones 2014-09-26 15:52:48 UTC 
OK, it's not actually qemu.  It's *seabios*.

1.7.4 => broken
1.7.5 => works

Tingting, what version of seabios are you testing against?
Comment 15 tingting zheng 2014-09-28 02:54:57 UTC 
(In reply to Richard W.M. Jones from comment #14)
> OK, it's not actually qemu.  It's *seabios*.
> 
> 1.7.4 => broken
> 1.7.5 => works
> 
> Tingting, what version of seabios are you testing against?

I checked my machine,It's odd that the version of seabios is 1.7.5.
# rpm -qa |grep seabios
seabios-bin-1.7.5-5.el7.noarch
Comment 16 Richard W.M. Jones 2014-10-17 16:20:35 UTC 
I believe the following two commits will fix this (and hopefully
won't break anything else).

https://github.com/libguestfs/libguestfs/commit/4f6033c3f4428f2c0033dfc256e71f05db17c3c2
https://github.com/libguestfs/libguestfs/commit/97c96ed6702cb7b4dfcc5acd08a29cb6f2b70b54

This will be added to >= 1.27.64.
Comment 18 tingting zheng 2014-10-20 10:10:37 UTC 
Tested with:
libguestfs-1.28.1-1.1.el7.x86_64
libguestfs-winsupport-7.1-4.el7.x86_64
virt-v2v-1.28.1-1.1.el7.x86_64
virtio-win-1.7.2-1.el7.noarch

Use virt-v2v to convert win7 guests to rhev and kvm,guests can be booted successfully on both rhev and kvm,so move the bug to VERIFIED.
Comment 20 errata-xmlrpc 2015-03-05 13:45:33 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-0303.html