DAOS-623 build: Create a simple RPM package

[jolivier23]

Makes simple set of packages for fused dynamic libraries.
Renames the library and include directory from fuse3 to fused to
avoid conflicts with upstream packages.

[jolivier23]

@brianjmurrell can I pick your brain on this one?

But before I do so, here are the reasons for doing a fork of fuse

1. the upstream libfuse releases at too slow a rate
2. FUSE provides terrrible performance out of the box and we want to experiment and possibly ship a custom kernel module. As such, we would want to customize libfuse as well. We could do the latter via patches but I wanted to have something that would not mess up other fuse file systems executing on the same node.

My builder renames fuse3 to fused so the libraries provided by the fused package won't conflict with libraries installed by the upstream library.

I can build both debian and rpm packages locally, I'm just trying to get the basic RPM/deb build working in Jenkins. For this purpose, I used the raft module as an example since it also is a fork where the code resides in the same repository. But it doesn't seem to be working for various reasons and without any visibility into Jenkins, I'm finding my ability to fix it limited.

I wanted to not have to bug you at all til I had it working but failed.

[brianjmurrell]

Do you have a reference as to how/where this package is used?

[brianjmurrell]

Just -1 until the purpose and use is more clearly understood.

[jolivier23]

Do you have a reference as to how/where this package is used?

Yeah, the idea is to move our fuse in this direction for a couple of reasons

1. there are other users of fuse so building fuse that everyone else uses seems risky. I actually ran into issues on my cloudtop with inability to mount internal stuff when I tried using our build of fuse.
2. This renames all of the libraries and header locations so that it won't conflict with default fuse
3. Gives us the ability to maintain our own fork with patches that upstream may not take that are specific to daos.

Here is a proof of concept patch to DAOS
daos-stack/daos#14077

That patch can't be landed until we land this and then figure out proper versioning.

[brianjmurrell]

You have rpmlint errors/warning that need to be resolved for a distributed package.

You also don't really want githash info included in the Release if you are building from a tag:

$ rpm -q --provides fused-1.0.0-1.2014.g0303197.el8.x86_64.rpm 
fused = 1.0.0-1.2014.g0303197.el8
fused(x86-64) = 1.0.0-1.2014.g0303197.el8

These should look like:

$ rpm -q --provides fused-1.0.0-1.el8.x86_64.rpm 
fused = 1.0.0-1.el8
fused(x86-64) = 1.0.0-1.el8

[brianjmurrell]

Why don't we want to ignore this file? It's autogenerated from Makefile.in isn't it?

[brianjmurrell]

Copyright update here?

[brianjmurrell]

Is the -name * redundant? Apart from that, this would be much more efficient:

Suggested change

	find lib -type f -name "*" -exec sed -i 's/fuse3/fused/g' {} ';'
	find include -type f -name "*" -exec sed -i 's/fuse3/fused/g' {} ';'
	find lib -type f -name "*" -print0 | xargs -0r sed -i 's/fuse3/fused/g' {} ';'
	find include -type f -name "*" -print0 | xargs -0r sed -i 's/fuse3/fused/g' {} ';'

as it only runs sed as many times is as necessary to fit within command-line length limits and passes as many filenames to a single sed command that fits within the limit.

But that said (heh, see what I did there?) isn't this kind of substitution something that should be done in the libfuse fork so that people building that from source don't also have to know to do this s///?

[brianjmurrell]

Ditto on doing this in the fork.

[brianjmurrell]

Ditto on using xargs and doing it in the fork.