I built the latest ceph-14 (14.2.2) on rawhide successfully two days ago.
Two different builds on f30 built or are building fine on x86_64, i686, and aarch64, but failed with different errors on ppc64le at different places in the build. One looks like it ran out of space in the file system. The other may have been OOM killed (?).
https://kojipkgs.fedoraproject.org//work/tasks/2448/36422448/build.log
https://kojipkgs.fedoraproject.org//work/tasks/4819/36444819/build.log
Thanks,
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Kaleb