RHBA-2013:0377 - Bug Fix Advisory

Topic

Updated perl-Sys-Virt packages that fix several bugs and add various
enhancements are now available for Red Hat Enterprise Linux 6.

Description

The perl-Sys-Virt packages provide application programming interfaces (APIs) to
manage virtual machines from Perl with the libvirt library.

The perl-Sys-Virt package has been upgraded to upstream version 0.10.2, which
provides a number of enhancements over the previous version. (BZ#836955)

This update fixes the following bugs:

• Previously, the Perl binding was setting an incompatible flag for the

set_blkio_parameters() function. Consequently, it was impossible to use this
function to apply block tuning. The incorrect flag has been removed and
set_blkio_parameters() can now be used as expected. (BZ#848309)

• Prior to this update, an incorrect string length was used when setting hash

keys, and thus names of certain hash keys were truncated. The correct string
lengths were provided for hash keys and the hash keys for the
get_node_memory_stats() function now match their documentation. (BZ#861581)

• When setting memory parameters, the set_node_memory_parameters() function was

trying to also update some read-only values. Consequently,
set_node_memory_parameters() always returned an error message. To fix this bug,
the method has been changed to only set parameters, and
set_node_memory_parameters() now works as expected. (BZ#865310)

• Previously, the API documentation contained formatting errors. This update

provides correction of the API documentation, which formats the documentation
correctly. (BZ#869130)

• Due to missing default values for parameters in the pm_suspend_for_duration()

and pm_wakeup() functions, callers of the API had to supply the parameters even
though they were supposed to be optional. With this update, the default values
have been added to these functions, which now succeed when called. (BZ#873203)

• Prior to this update, mistakes were present in the Plain Old Documentation

(POD) for the list_all_volumes() parameters, which could mislead users. The
documentation has been updated and, for list_all_volumes() now describes the API
usage correctly. (BZ#882829)

• Previously, an incorrect class name was used with the list_all_nwfilters()

function. Consequently, the objects returned from list_all_nwfilters() could not
be used. Now, the object name has been fixed and the list_all_nwfilters()
function works as expected. (BZ#883775)

• When checking return value of the screenshot() and current_snapshot()

functions, a wrong data type was assumed. Consequently, certain errors were not
handled properly and applications could eventually terminate unexpectedly. With
this update, API errors are correctly handled in screenshot() and
current_snapshot(), and the applications no longer crash. (BZ#886028)

Users of perl-Sys-Virt are advised to upgrade to these updated packages, which
fix these bugs and add these enhancements.

Solution

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x

Fixes

• BZ - 848309 - Can not set device_weight with set_blkio_parameters
• BZ - 861581 - [perl-Sys-Virt] error of get_node_cpu_stats and get_node_memory_stats
• BZ - 865310 - set_node_memory_parameters failed with error
• BZ - 869130 - [Doc] Perl-Sys-Virt doc has some format problem
• BZ - 873203 - pm_suspend_for_duration and pm_wakeup parameters flags are not optional
• BZ - 882829 - [Doc] Perl-Sys-Virt doc for list_all_volumes have errors
• BZ - 883775 - list_all_interface and list_all_nwfilters have some problems
• BZ - 886028 - Incorrect return value checks can lead to crash

CVEs

(none)

References

(none)