On Fri, 13 May 2022 at 06:18, Nux <[email protected]> wrote: > Hello, > > We've just been bit by some libvirt updates in our project (Apache > Cloudstack) which basically broke basic functionality on AlmaLinux 8.4. > I expected the same problem to happen on RockyLinux 8.4, however turns > out the libvirt on this one was an older version and not even "yum > update" changed this. > On closer investigation I noticed Rocky actually ships 5 "virt" modules, > according to "yum module info virt", my Alma test box only ships one, > which is also very up to date. > > No actual complaints here, but can someone explain to me why the > discrepancy? Didn't use EL8 much, but expected all "clones" to be more > or less identical, but turns out there are differences that matter. > > Hmm I do not know what is going on with the Rocky side of things, but I am guessing there might have been a mismatch on how to build module 'versions' as module 'streams'. Let us look at perl and virt as examples. RHEL offers 4 perl streams with different lifetimes and support leveles ( https://access.redhat.com/support/policy/updates/rhel-app-streams-life-cycle ) and only one virt stream. ``` [root@vector-8 ~]# dnf module list perl Updating Subscription Management repositories. Last metadata expiration check: 1:11:06 ago on Fri 13 May 2022 06:44:03 EDT. Red Hat Enterprise Linux 8 for x86_64 - AppStream (RPMs) Name Stream Profiles Summary
perl 5.24 common [d], minimal Practical Extraction and Report Language perl 5.26 [d][e] common [d], minimal Practical Extraction and Report Language perl 5.30 common [d], minimal Practical Extraction and Report Language perl 5.32 common [d], minimal Practical Extraction and Report Language Hint: [d]efault, [e]nabled, [x]disabled, [i]nstalled [root@vector-8 ~]# dnf module list virt Updating Subscription Management repositories. Last metadata expiration check: 1:11:20 ago on Fri 13 May 2022 06:44:03 EDT. Red Hat Enterprise Linux 8 for x86_64 - AppStream (RPMs) Name Stream Profiles Summary virt rhel [d][e] common [d] Virtualization module Hint: [d]efault, [e]nabled, [x]disabled, [i]nstalled ``` The virt module has had multiple versions over its lifetime with RHEL-8. The EPEL build system accidently keeps a list of them due to grobisplitter putting them into trees when they are first seen. ``` 2019-09-19 virt:rhel:8000020190618154454:f8e95b4e:x86_64/ 2019-11-07 virt:rhel:8000020190828150510:f8e95b4e:x86_64/ 2019-12-18 virt:rhel:8010020190916153839:cdc1202b:x86_64/ 2020-01-30 virt:rhel:8010020191202185848:c27ad7f8:x86_64/ 2020-04-08 virt:rhel:8010020191216093608:c27ad7f8:x86_64/ 2020-04-29 virt:rhel:8010020200304114113:c27ad7f8:x86_64/ 2020-07-01 virt:rhel:8020020200316135718:6a468ee4:x86_64/ 2020-09-30 virt:rhel:8020020200601195459:4cda2c84:x86_64/ 2020-11-03 virt:rhel:8020020200909224913:4cda2c84:x86_64/ 2020-12-16 virt:rhel:8030020200909014558:30b713e6:x86_64/ 2021-02-17 virt:rhel:8030020201123162111:229f0a1c:x86_64/ 2021-03-04 virt:rhel:8030020210205201602:229f0a1c:x86_64/ 2021-05-21 virt:rhel:8030020210210212009:229f0a1c:x86_64/ 2021-08-11 virt:rhel:8040020210317013608:9f9e2e7e:x86_64/ 2021-11-10 virt:rhel:8040020210721215855:522a0ee4:x86_64/ 2021-12-22 virt:rhel:8050020211001230723:b4937e53:x86_64/ 2022-02-02 virt:rhel:8050020211203195115:c5368500:x86_64/ 2022-03-16 virt:rhel:8050020220113125354:c5368500:x86_64/ 2022-04-27 virt:rhel:8050020220208234339:c5368500:x86_64/ 2022-05-11 virt:rhel:8050020220322234807:c5368500:x86_64/ 2022-05-11 virt:rhel:8060020220408104655:d63f516d:x86_64/ ``` To a user you should see only one module stream which is virt:rhel. It should then continuously get updated when the 'version' of the module is updated and all the packages in this 'pseudo-repository' are updated en-mass. I do not know how Rocky has split things up and it could be for multiple reasons like they are offering alternative streams or their tooling at one point split things in different ways than RHEL does. -- Stephen J Smoogen. Let us be kind to one another, for most of us are fighting a hard battle. -- Ian MacClaren
