Improved Versioning, Building, and Distribution of Lustre
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1 Improved Versioning, Building, and Distribution of Lustre LUG 2016 Christopher J. Morrone, Giuseppe Di Natale April 5, 2016 This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract DE-AC52-07NA Lawrence Livermore National Security, LLC
2 Community Release Package lustre _ el7_lustre.x86_64.x86_64.rpm 2
3 Parts of RPM File Name lustre _ el7_lustre.x86_64.x86_64.rpm Name Version Release Architecture 3
4 Airing of Grievances RPM Release field abuse Tarball version incomplete Package tied to single kernel Lustre unbuildable without git Incompatible with Koji Release Candidate abomination Multiple version headers Complicated code 4
5 More Version Examples Development package lustre _ el7_lustre.g941eb0e.x86_64_g x86_64.rpm Third party package (--with-downstream-release=) lustre acme_3.10.0_ el7.x86_64.x86_64.rpm Third party development package lustre acme_3.10.0_ el7.x86_64_gdf14e91.x86_64.rpm 5
6 Inconsistent Versions lustre tar.gz lustre _gdf14e91.src.rpm lustre acme_3.10.0_ el7.x86_64_gdf14e91.x86_64.rpm 6
7 Almost Consistent Versions lustre-2.8.0_9acme_1_gdf14e91.tar.gz lustre-2.8.0_9acme_1_gdf14e91-1.src.rpm lustre-2.8.0_9acme_1_gdf14e91-1_3.10.0_ el7.x86_64.x86_64.rpm ee813db LU-7699 build: Replace version_tag.pl with LUSTRE-VERSION-GEN 7
8 Third Party Versions After 2.8.0: --with-downstream-release is OBSOLETE Consult Documentation/versioning.txt Summary: Edit DEFAULT_VERSION in LUSTRE-VERSION-GEN Use well-formed tag (e.g _9acme) 8
9 Release Candidate Abomination RC RC RC3 lustre <kernel>.x86_64.rpm RC RC5 See rationale in LU
10 Consistent Versions lustre-2.8.0_9acme_1_gdf14e91.tar.gz lustre-2.8.0_9acme_1_gdf14e91-1.src.rpm lustre-2.8.0_9acme_1_gdf14e91-1.x86_64.rpm No kernel version in the Release! Requires completion of LU
11 More Consistent Versions lustre tar.gz lustre src.rpm lustre x86_64.rpm No kernel version in the Release! Requires completion of LU
12 LU-5614 use %kernel_module_package for weak-updates Linux ver. A Lustre ver. X.A Linux ver. A Linux ver. B Lustre ver. X.B Linux ver. B Lustre ver. X Linux ver. C Lustre ver. X.C Linux ver. C LU-5614 under way for over 18 months! 12
13 Eliminate the Custom Lustre Kernel Requirement LU-20 - patchless server kernel LU-684 replace dev_rdonly kernel patch with dm-flakey Linux ext4 patches Lustre patches ZFS ldiskfs 13
14 Community Build Farm for Lustre This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract DE-AC52-07NA Lawrence Livermore National Security, LLC
15 Goals For each commit submitted to Gerrit Build on various distributions and architectures Publish build results and products in a timely fashion Test functionality and publish results Have a community driven build and test platform that can be rapidly adapted to changing needs 15
16 OpenSFS Build Farm for Lustre An automated build system backed by Buildbot Configuration open to community collaboration on github Hosted on Amazon Web Service (AWS) 16
17 Why Buildbot? Flexible and Extendable Open Source Good interoperability with other tools Developer defined workflow If you can script it, Buildbot can run it Out of the box support for Gerrit and Amazon EC2 Hosts a web page to view builds out of the box Learned from ZFSonLinux experience with Buildbot 17
18 Buildbot Architecture Build A Build B Builder 1 Slave 1 Lustre Buildbot Master Factories Builder 2 Slave 1 Slave 2 Slave 2 Slave 3 Slave 3 18
19 19
20 20
21 Current Builders Currently building patch sets CentOS 6.7 x86_64 (zfs, ldiskfs) CentOS 7.2 x86_64 (zfs, ldiskfs) SLES 12.1 x86_64 (zfs) Ubuntu x86_64 (zfs) Ubuntu x86_64 (zfs) Community contributed build slaves! PowerPC 64-big (coming) 21
22 Build Turnaround Time Timely response for single build Worse case, 40 minutes Best case, 15 minutes Outstanding Issues Multiple Gerrit commits Slave startup can be improved Buildbot sequentializes slave startup 22
23 Future Plans Publish build products Promote independent testing Supply build status in Gerrit review Automated testing Build official packages for all tags Community development and maintenance!! 23
24 Summary Versions and Packages Consistent versions Lustre builds through standard tools (Koji) Weak-updates Change to third-party versions Buildbot Web: Repository and Issue Tracker: Community driven Hosted by OpenSFS in AWS Questions? Comments? Ideas? Get involved! 24
25
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