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Bug 1139973 - Improve the error info when converting xen guest with no passwordless SSH access configured
Summary: Improve the error info when converting xen guest with no passwordless SSH acc...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: libguestfs
Version: 7.1
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: rc
: ---
Assignee: Richard W.M. Jones
QA Contact: Virtualization Bugs
URL:
Whiteboard: V2V
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-09-10 06:07 UTC by tingting zheng
Modified: 2015-03-05 13:44 UTC (History)
6 users (show)

Fixed In Version: libguestfs-1.27.42-1.2.el7
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-03-05 13:44:24 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
Detailed log file (2.45 KB, text/plain)
2014-09-10 06:07 UTC, tingting zheng 		no flags Details
View All


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2015:0303 0 normal SHIPPED_LIVE libguestfs bug fix and enhancement update 2015-03-05 17:34:44 UTC

Description tingting zheng 2014-09-10 06:07:45 UTC 
Created attachment 936009 [details]
Detailed log file

Description
Improve the error info when converting xen guest with no passwordless SSH access configured

Version:
libguestfs-1.27.41-1.1.el7.x86_64
virt-v2v-1.27.41-1.1.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1.Prepare a xen server,make sure no passwordless SSH access configured

2.Use virt-v2v to convert a xen guest from xen server,unclear error info showes as below:
# virt-v2v -ic xen+ssh://10.66.106.64 -os default  rhel6.6-pv-x64-test 
[   0.0] Opening the source -i libvirt -ic xen+ssh://10.66.106.64 rhel6.6-pv-x64-test
root.106.64's password: 
libvirt: Remote Driver error : unknown procedure: 212
[  16.0] Creating an overlay to protect the source from being modified
qemu-img: /tmp/v2vovlb7e299.qcow2: Could not open 'json: { "file.driver" : "ssh", "file.path" : "/var/lib/xen/images/rhel6.6-pv-x64-test.img", "file.host" : "10.66.106.64", "file.host_key_check" : "no" }': failed to connect to ssh-agent: no auth sock variable (libssh2 error code: -39): Connection refused
virt-v2v: error: qemu-img command failed, see earlier errors

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

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


Actual results：
The error info is unclear.

Expected results:
Error info shows for users to configure passwordless ssh access to remote xen server.

Additional info:
Attched detailed debug log.
Comment 2 Richard W.M. Jones 2014-09-10 10:33:49 UTC 
(In reply to tingting zheng from comment #0)
> # virt-v2v -ic xen+ssh://10.66.106.64 -os default  rhel6.6-pv-x64-test 
> [   0.0] Opening the source -i libvirt -ic xen+ssh://10.66.106.64
> rhel6.6-pv-x64-test
> root.106.64's password: 
> libvirt: Remote Driver error : unknown procedure: 212

By the way, this could be an error as well.

Procedure 212 is REMOTE_PROC_DOMAIN_GET_STATE.  What I think
the error means is that the remote libvirtd is too old to support
the domain-is-running test that I implemented as a fix for bug 1138586.
Comment 3 Richard W.M. Jones 2014-09-10 15:36:25 UTC 
(In reply to Richard W.M. Jones from comment #2)
> > libvirt: Remote Driver error : unknown procedure: 212
> 
> By the way, this could be an error as well.
> 
> Procedure 212 is REMOTE_PROC_DOMAIN_GET_STATE.  What I think
> the error means is that the remote libvirtd is too old to support
> the domain-is-running test that I implemented as a fix for bug 1138586.

This issue (which is NOT related to this bug) is now fixed in
commit 516faa1bcb64a95b25ec7f3b2be0d2d1f6c0c60d in >= 1.27.42.
Comment 4 Richard W.M. Jones 2014-09-10 16:04:34 UTC 
Back to the original bug, an easy way to reproduce this is:

$ ( unset SSH_AUTH_SOCK; virt-v2v -ic xen+ssh://root@server guestname -o local -os /tmp )

This bug is now fixed in the following commit:

https://github.com/libguestfs/libguestfs/commit/c49d35a919284f54a8e98a8a17c2543e7973b583

You will see this error message:

virt-v2v: error: ssh-agent authentication has not been set up 
($SSH_AUTH_SOCK is not set).  Please read "INPUT FROM RHEL 5 XEN" in the 
virt-v2v(1) man page.

This will appear in libguestfs >= 1.27.42.
Comment 6 zhoujunqin 2014-09-15 10:06:43 UTC 
I can reproduce it as Comment 0 said.
And try to verify with new build:
libvirt-1.2.8-2.el7.x86_64
virt-v2v-1.27.43-1.1.el7.x86_64

steps:
1.Prepare a xen server,make sure no passwordless SSH access configured
# unset SSH_AUTH_SOCK

2.Use virt-v2v to convert a xen guest from xen server
#  virt-v2v -ic xen+ssh://10.66.106.64 -os default  rhel6.6-pv-x64-test 
[   0.0] Opening the source -i libvirt -ic xen+ssh://10.66.106.64 rhel6.6-pv-x64-test
libvirt: Remote Driver error : unknown procedure: 212
virt-v2v: error: ssh-agent authentication has not been set up 
($SSH_AUTH_SOCK is not set).  Please read "INPUT FROM RHEL 5 XEN" in the 
virt-v2v(1) man page.

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

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

seen above error message, so move this bug from ON_QA to VERIFIED.
Comment 8 errata-xmlrpc 2015-03-05 13:44:24 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
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