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

Judd O'Bannon

judd.obannon at rackspace.com
Fri Aug 28 21:08:06 UTC 2020

From: CentOS-devel <centos-devel-bounces at centos.org> on behalf of Johnny Hughes <johnny at centos.org>
Sent: Friday, August 28, 2020 13:07
To: centos-devel at centos.org
Subject: Re: [CentOS-devel] Centos 8.x, dlm Package unavailable

CAUTION: This message originated externally, please use caution when clicking on links or opening attachments!

On 8/28/20 6:58 AM, Judd O'Bannon via CentOS-devel wrote:
>> On 8/25/20 11:21 AM, Theodor Mittermair wrote:
>>> Hello,
>>> 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='*'
>>> --enablerepo=BaseOS,AppStream,HighAvailability,epel,cr,centosplus,PowerTools,Devel,extras,fasttrack
>>> 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
>>> configuration?
>>> 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
>>> <https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fkoji.mbox.centos.org%2Fkoji%2Fbuildinfo%3FbuildID%3D4801&data=02%7C01%7Cjudd.obannon%40rackspace.com%7C95b03022065d4215a0cf08d84b7d325f%7C570057f473ef41c8bcbb08db2fc15c2b%7C0%7C0%7C637342349428182226&sdata=1uu0JPTCRCiVMxMHBBN63ga7FvXxdtesvTrXNZddCHA%3D&reserved=0>
>>> [1] https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugs.centos.org%2Fview.php%3Fid%3D16553&data=02%7C01%7Cjudd.obannon%40rackspace.com%7C95b03022065d4215a0cf08d84b7d325f%7C570057f473ef41c8bcbb08db2fc15c2b%7C0%7C0%7C637342349428182226&sdata=IQaAl6qEjkwVWWOrHwnWSVtORrtXIJDm%2FT3tPSW3ME8%3D&reserved=0
>>> [2] https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugs.centos.org%2Fview.php%3Fid%3D16939&data=02%7C01%7Cjudd.obannon%40rackspace.com%7C95b03022065d4215a0cf08d84b7d325f%7C570057f473ef41c8bcbb08db2fc15c2b%7C0%7C0%7C637342349428182226&sdata=g1S0BaGZ89XqyzWFfszbL35Wv2j%2FGn%2BZQ%2FBTcuE1zUM%3D&reserved=0
>>> [3]
>>> https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Faccess.redhat.com%2Fdocumentation%2Fen-us%2Fred_hat_enterprise_linux%2F8%2Fhtml%2Fconfiguring_and_managing_high_availability_clusters%2Fassembly_configuring-gfs2-in-a-cluster-configuring-and-managing-high-availability-clusters&data=02%7C01%7Cjudd.obannon%40rackspace.com%7C95b03022065d4215a0cf08d84b7d325f%7C570057f473ef41c8bcbb08db2fc15c2b%7C0%7C0%7C637342349428182226&sdata=c95tVsARRd28rVmKmVupiiHniHJchfvM63zzaRu9LGQ%3D&reserved=0
>>> [4] https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fkoji.mbox.centos.org%2Fkoji%2Fbuildinfo%3FbuildID%3D145&data=02%7C01%7Cjudd.obannon%40rackspace.com%7C95b03022065d4215a0cf08d84b7d325f%7C570057f473ef41c8bcbb08db2fc15c2b%7C0%7C0%7C637342349428182226&sdata=q5V2nTWqkmU443YpeB%2FMElLxUD%2FHNPaae4wQO5zN304%3D&reserved=0
>>> [5] https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcopr.fedorainfracloud.org%2Fcoprs%2Fastra%2Fdlm%2F&data=02%7C01%7Cjudd.obannon%40rackspace.com%7C95b03022065d4215a0cf08d84b7d325f%7C570057f473ef41c8bcbb08db2fc15c2b%7C0%7C0%7C637342349428182226&sdata=xgzIL%2F3XGXJ0AfKrc0DPQSRPT9S%2BvZ60vUyZj5ZAa2M%3D&reserved=0
>>> _______________________________________________
>>> CentOS-devel mailing list
>>> CentOS-devel at centos.org
>>> https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.centos.org%2Fmailman%2Flistinfo%2Fcentos-devel&data=02%7C01%7Cjudd.obannon%40rackspace.com%7C95b03022065d4215a0cf08d84b7d325f%7C570057f473ef41c8bcbb08db2fc15c2b%7C0%7C0%7C637342349428182226&sdata=uMuUaWbyldLVlEjtYFzufdfrqGGvl4smxnp%2FwWQSYxI%3D&reserved=0
>> Hi Folks,
>> Some clarity will follow on how we plan to deliver Addon repositories
>> like ResilientStorage, HighAvailability and NFV.
>> Because of Red Hat’s desire to develop Addons along with the next minor
>> release of RHEL our plan is to enable ResilientStorage and NFV in CentOS
>> Stream for direct consumption.
>> If you think a package belongs in another repository, we encourage you
>> to open a CentOS Stream bugzilla to discuss with RHEL maintainers:
>> https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugzilla.redhat.com%2Fenter_bug.cgi%3Fproduct%3DRed%2520Hat%2520Enterprise%2520Linux%25208%26version%3DCentOS%2520Stream&data=02%7C01%7Cjudd.obannon%40rackspace.com%7C95b03022065d4215a0cf08d84b7d325f%7C570057f473ef41c8bcbb08db2fc15c2b%7C0%7C0%7C637342349428182226&sdata=2qY4lAm%2FnhxrK%2FpUd33s7NWayvIjOuk2cr6ZFLcYRYA%3D&reserved=0
>> We do not plan to expand the portfolio of Addons for CentOS Linux.
>> If there is a group of interested folks who wish to maintain extra
>> content built against CentOS Linux, you may apply for a Special Interest
>> Group: https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwiki.centos.org%2FSIGGuide&data=02%7C01%7Cjudd.obannon%40rackspace.com%7C95b03022065d4215a0cf08d84b7d325f%7C570057f473ef41c8bcbb08db2fc15c2b%7C0%7C0%7C637342349428182226&sdata=wn2IhVrMpgmcy6BpWZWCf1mL0TV9CVa2Ih%2BV4ki%2F%2BKI%3D&reserved=0
>> Cheers!
>> --Brian
> My apologies as I just subscribed to this list, I'll likely break the thread up. I did my best to contain relevance above.
> First question, the statement ""...Resilient Storage is not base...". There has been a shift from 7 to 8 that I don't understand. RHEL 7 provides dlm in ResilientStorage, then CentOS 7 provides dlm in base [1]. The dlm package is still part of ResilientStorage in RHEL 8, but can't be provided?  I wasn't able to find any answer to why that was changed. Can you provide any insight to the shift?
> Second question, the current advice seems to be "dlm will be in centos-stream and you should use that." However, tdawson made a pretty explicit statement: "If people are running their production machines on CentOS Stream ... well, in my opinion, that's their problem."[2] These statements appear contradictory.
> Just trying to piece this all together so I can explain to my peers the business and community decisions going on here.
> Currently someone that set up a cluster with gfs2 in 7 can't do the same thing in 8 due to the dlm package missing. That is a loss of functionality and seems to indicate it's a bug or intentional reduction in feature set.

Yes, it is different than CentOS Linux 7.  I'm sorry, that is just the
way it is.  If it were up to me, I would push it .. it is not up to me.

> If I'm misunderstanding any of this please educate me.

It has already been stated that we will bot be putting the addon items
in CentOS Linux .. just in Stream.

You have to test and decide what you will use.

> Thank you,
> Judd
> [1] https://nam12.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmirror.centos.org%2Fcentos-7%2F7%2Fos%2Fx86_64%2FPackages%2Fdlm-4.0.7-1.el7.x86_64.rpm&data=02%7C01%7Cjudd.obannon%40rackspace.com%7C95b03022065d4215a0cf08d84b7d325f%7C570057f473ef41c8bcbb08db2fc15c2b%7C0%7C0%7C637342349428182226&sdata=u3sSGfZQKek5SRYDzhjSWcXWHxX7nDMUjilu%2FQixhDI%3D&reserved=0
> [2] https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.centos.org%2Fpipermail%2Fcentos-devel%2F2020-July%2F037034.html&data=02%7C01%7Cjudd.obannon%40rackspace.com%7C95b03022065d4215a0cf08d84b7d325f%7C570057f473ef41c8bcbb08db2fc15c2b%7C0%7C0%7C637342349428182226&sdata=AOu1u%2B5Ss6GccBiNKDVkLL0dsgjWg4szSKCRO6dU6Ds%3D&reserved=0

One further question for further clarification and us to plan how this might work in the future: Currently the HA (HighAvailability) addon is provided. Should we plan for that to be removed as a great deal of the rpms are in common between HA and RS? 

Thank you,


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