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

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

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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,

Judd