[CentOS-devel] Centos 8.x, dlm Package unavailable

Theodor Mittermair

tmittermair at cvl.tuwien.ac.at
Tue Aug 25 16:21:38 UTC 2020


I'd like to inquire about the status of the "dlm" package on Centos 8, 
which is required for using 'lvmlockd', replacement of 'clvmd'.
I also asked on #centos irc channel and was directed to this mailing list
There is a corresponding bug ticket [2] for this issue for quite some 
time, but since the end-of-life of CentOS 6 grows closer, some people 
would like to replace their CentOS 6 Cluster with a CentOS 8 one, which 
is why I ask on this mailing list now.

With the release of CentOS 8.0 it seems there were some issues with 
HighAvailability in general [1], but seem to have been resolved with 
CentOS 8.1.

However, as already mentioned there is a separate ticket [2], for the 
dlm package, which is unresolved as far ( 2020-08-25, Centos8.2 ) as i 
am aware.
This prevents the use of clustered lvm and gfs2 out of the box, not an 
uncommon use when configuring a HA Cluster, also described by RedHat 
documentation [3].
In that tickets' conversation, it is mentioned that "that package is not 
in RHEL .. we have released what is in RHEL", however someone else 
seemed to have been in contact with RedHat and received information that 
"...this package is in fact part of a RedHat repository and then CentOS 
members should be able to take a look into it again...".

I'd also like to bring attention to the following explicitly:
* dlm-lib and dlm seem to be built from the same source rpm, dlm-lib is 
available while dlm is not.
* apparently at some point in time dlm could be downloaded from koji 
[4], but no more. For testing purposes we built dlm ourselves, locally 
as well as on copr [5], which seems to work thus far.
* fedora (however much this might mean) provides dlm.
* It might just be a configuration error on the build system, if I 
understood correctly, there was/is larger amounts of restructuring. Also 
see chders' post from 2020-08-21 [2], which provides a possible 
explanation and solution.

For completeness, you should be able reproduce the absence of that 
package with:
"yum --disablerepo='*' 
list available | grep dlm"
or simply attempt to
"yum install dlm"
on your CentOS 8.x Installation.

Therefore, I would like to ask:
Is this an error on my end, am I doing something wrong or missing a 
If no, is there actually any political/technical/administrative/law 
based reason for the unavailability of the "dlm" package?
If no, according to recent posts on the ticket [2], there might be a 
rather simple solution (simplified, declaring the package to be included 
in a repository), is it valid and who could do this if applicable?

with best regards
Theodor Mittermair
[1] https://bugs.centos.org/view.php?id=16553
[2] https://bugs.centos.org/view.php?id=16939
[4] https://koji.mbox.centos.org/koji/buildinfo?buildID=145
[5] https://copr.fedorainfracloud.org/coprs/astra/dlm/

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.centos.org/pipermail/centos-devel/attachments/20200825/314f9bc0/attachment.html>

More information about the CentOS-devel mailing list