- Issued:
- 2010-02-23
- Updated:
- 2010-02-23
RHBA-2010:0117 - Bug Fix Advisory
Synopsis
dlm-kernel bug-fix update
Type/Severity
Bug Fix Advisory
Topic
Updated dlm-kernel packages that fix a bug and bring the dlm-kernel modules
into sync with kernel release 2.6.9-89.0.20.EL are now available for Red
Hat Enterprise Linux 4.8.
Description
The dlm-kernel modules allow the Distributed Lock Manager (DLM) to
communicate with the kernel.
These updated dlm-kernel packages are in sync with the latest kernel
(2.6.9-89.0.20.EL). The modules in earlier dlm-kernel packages fail to load
because they do not match the running kernel. It is possible to force-load
the modules; however, with this update, force-loading the modules is not
required.
As well, this update addresses the following bug:
- a problem in the lock granting logic could result in lvm hanging during
connect() calls to clvmd. With this update the lock granting logic has been
changed to prevent this. "_can_be_granted" now returns TRUE for locks, like
lkb1, that are being requested or tested by the grant logic for the first
time since being requested (ie are not already on the waitqueue).
(BZ#564454)
Note: the fix is only enabled for user lock spaces (eg clvmd and
rgmanager). It is theoretically possible this change could cause a
regression in a user lock space workload. The fix can be disabled with the
following command:
echo 0 > /proc/cluster/config/dlm/user_grant_now
Users are advised to upgrade to these latest dlm-kernel packages, which
address this issue and are updated for use with the 2.6.9-89.0.20.EL
kernel.
Solution
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
To update all RPMs for your particular architecture, run:
rpm -Fvh [filenames]
where [filenames] is a list of the RPMs you wish to upgrade. Only those
RPMs which are currently installed will be updated. Those RPMs which are
not installed but included in the list will not be updated. Note that you
can also use wildcards (*.rpm) if your current directory *only* contains
the
desired RPMs.
Please note that this update is also available via Red Hat Network. Many
people find this an easier way to apply updates. To use Red Hat Network,
launch the Red Hat Update Agent with the following command:
up2date
This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.
Affected Products
- Red Hat Enterprise Linux High Availability for x86_64 4 x86_64
- Red Hat Enterprise Linux High Availability for x86_64 4 ppc
- Red Hat Enterprise Linux High Availability for x86_64 4 ia64
- Red Hat Enterprise Linux High Availability for x86_64 4 i386
- Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support highavailability for RHEL 4ES x86_64
- Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support highavailability for RHEL 4ES ia64
- Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support highavailability for RHEL 4ES i386
- Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support highavailability for RHEL 4AS x86_64
- Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support highavailability for RHEL 4AS ppc
- Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support highavailability for RHEL 4AS ia64
- Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support highavailability for RHEL 4AS i386
Fixes
- BZ - 564454 - lvm commands hang on connect() to clvmd
CVEs
(none)
References
(none)
The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.