Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Bug 680031

Summary: Obscure virt-top error message: Fatal error: exception Libvirt.Virterror(1, 0, _, 2, 0, 0, 0, _, _)
Product: Red Hat Enterprise Linux 6 Reporter: Richard W.M. Jones <rjones>
Component: virt-topAssignee: Richard W.M. Jones <rjones>
Status: CLOSED ERRATA QA Contact: Virtualization Bugs <virt-bugs>
Severity: medium Docs Contact:
Priority: medium    
Version: 6.2CC: dyuan, mzhan, zpeng
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: virt-top-1.0.4-3.9.el6 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-12-06 17:12:26 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Richard W.M. Jones 2011-02-24 06:33:19 UTC
Description of problem:

See https://bugzilla.redhat.com/show_bug.cgi?id=605124#c10

[root@auto-ppcp-001 tps]# virt-top
libvir: error : Unknown failure
Fatal error: exception Libvirt.Virterror(1, 0, _, 2, 0, 0, 0, _, _)

Version-Release number of selected component (if applicable):

virt-top-1.0.4-3.7.el6.ppc64

Comment 2 Richard W.M. Jones 2011-03-08 08:25:47 UTC
Setting flags for 6.2.

Comment 3 Richard W.M. Jones 2011-08-11 12:05:07 UTC
(In reply to comment #0)
> Description of problem:
> 
> See https://bugzilla.redhat.com/show_bug.cgi?id=605124#c10
> 
> [root@auto-ppcp-001 tps]# virt-top
> libvir: error : Unknown failure
> Fatal error: exception Libvirt.Virterror(1, 0, _, 2, 0, 0, 0, _, _)

It seems most likely that this error comes from virInitialize.

The fields are:
  code = VIR_ERR_INTERNAL_ERROR
  domain = VIR_FROM_NONE
  message = (not seen)
  level = VIR_ERR_ERROR
  str1 = str2 = str3 = NULL
  int1 = int2 = (not seen)

Intriguingly this could be from libvirt, or it could be the
error synthesized by ocaml-libvirt bindings when virGetLastError
returns NULL.

The reason that the ordinary pretty printer for Libvirt.Virterror
was not called is that this code happens when virt-top starts up,
before entering the main program, and before entering the try-
block that would pretty print these errors.

There are a range of reasons why virInitialize might have failed,
but without full debugging output (LIBVIRT_DEBUG=1) it's not very
easy to tell.  Note the original error was reported on PPC64.

I'm going to add a section in the manual page about libvirt debugging.

Comment 4 Richard W.M. Jones 2011-08-11 12:11:48 UTC
Upstream commit 067b868b9cce7620774d7fb57dac6fd8df45d8df.

Comment 6 zhe peng 2011-08-12 03:36:37 UTC
this bug can reproduce with:
virt-top-1.0.4-3.7.el6.ppc64
libvirt-0.8.7-15.el6.ppc64

verify with:
virt-top-1.0.4-3.10.el6.ppc64
libvirt-0.9.4-2.el6.ppc64

#virt-top
virt-top 23:35:52 - ppc64 4/1CPU 2497MHz 3925MB 0.0%
0 domains, 0 active, 0 running, 0 sleeping, 0 paused, 0 inactive D:0 O:0 X:0
CPU: 0.0%  Mem: 0 MB (0 MB by guests)

no error when launch virt-top,virt-top worked well.
verification passed.

Comment 7 errata-xmlrpc 2011-12-06 17:12:26 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.

http://rhn.redhat.com/errata/RHBA-2011-1692.html