New MHVTL release for recent kernels

[beer4duke]

I am just creating this ticket as it would be nice to get a new release of MHVTL from current master as 1.7 was released 10 months ago and is not installing smoothly on recent kernels.

I have been building alma 9 rpms from 4f36ea7 for the past weeks and I am happily running mhvtl on my fedora 37 laptop from these (kernel 6.0.15-300).

[markh794]

As there is an ask - I will create a new release shortly.

[markh794]

A slight delay with a new release version.
Testing with AlmoLinux highlighted an issue with selinux and the systemd/selinux.
Once I sort out the required selinux ACL, I'll create the new packages.

[gumond]

Was there any progress on this issue ? We seem to be hitting several issues running latest tag on Alma 9 lately.

[markh794]

Was there any progress on this issue ? We seem to be hitting several issues running latest tag on Alma 9 lately.

What sort of issues ?
i.e. runtime issues (bugs) or compile time issues ?

[gumond]

Actually both, I let my colleagues give you more information on the compilation problems.

On the runtime part, we have, since long, observed the drive throughput becoming slower overtime, we are trying to identify the bottleneck at the moment (it might be that this has been fixed in the current HEAD). The more striking issue seems to be a very slow throughput (again, in the current latest tag - March 2023), which we are trying to debug as well. We do suspect a write overhead happening. That said, this can be a separate issue which we will open only once we manage to run a test with a new release.

[markh794]

About the only thing that changed in the write path for many years is the hiding of fsync() behind 'if debug' (it was in the main code path before)

[gumond]

Thank you, that is good to know.
Do you think we could have a new release anytime soon ?

[markh794]

I spun up a AlmaLinux 9.4 and noted a compilation error. I'll fix that and cut a new RPM

[gumond]

Thank you very much Mark ! We did manage to compile the head eventually and deployed it in our test instance, but having a new release would be great !