Red Hat Bugzilla – Bug 812975
libcephfs is useless
Last modified: 2012-06-07 13:29:33 EDT
Description of problem: A 4.5M shared library used by literally nothing else in the distro. Which afaict gets installed by default even on the live image since qemu requires it. As a more general thing I'd like to see the binaries and libraries split apart if things will work when split that way, but libcephfs should definitely either be subpackaged or just deleted.
Even better is for qemu not to require the thing at all.
I don't disagree, but they appear to have enabled the feature intentionally. * Wed Oct 12 2011 Daniel P. Berrange <berrange@redhat.com> - 2:0.15.0-6 - Add BR on ceph-devel to enable RBD block device I should clarify that libcephfs is not used even by qemu. qemu simply needs librados and librdb, but since ceph isn't subpackaged it also brings in the rest of the ceph tools.
Agreed, it would be desirable to have the ceph RPM split up into several sub-RPMs, so QEMU doesn't pull in the whole lot, 90% of which it doesn't need.
Created attachment 578050 [details] ceph-subpackage.patch Proposed package split. Moves most libs to -libs, and libcephfs to -libcephfs. -devel brings in both. Size before is 36612992 bytes installed. Sizes after: % rpm -qp --qf="%{name} %{size}\n" ceph-{,libs-,libcephfs-}0.45-1.fc18.x86_64.rpm ceph 27306744 ceph-libs 4856051 ceph-libcephfs 4457611 As a further modest size reduction it looks like ceph could be built with -fvisibility-inlines-hidden in CXXFLAGS. At least, everything still links if you do that, though I haven't tried setting it up to see if it works. That gives: % rpm -qp --qf="%{name} %{size}\n" ceph-{,libs-,libcephfs-}0.45-1.fc18.x86_64.rpm ceph 24947448 ceph-libs 3953067 ceph-libcephfs 3621387
Alrighty I'll apply that and use -fvisibility-inlines-hidden and if the compiler flag breaks anything I'll just pull it out.
* Wed May 9 2012 Josef Bacik <josef@toxicpanda.com> - 0.46-1 - updated to upstream 0.46 - broke out libcephfs (rhbz# 812975)