Ceph Crimson Weekly, 12 Apr 2023

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From YouTube: Ceph Crimson/SeaStar-OSD 2023-04-12 Meeting

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Join us weekly for the Ceph Crimson/Seastore meeting: https://ceph.io/en/community/meetups

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A

This looks like all we're gonna get so um for me. Unfortunately, didn't do much work in Crimson, I've been doing some stuff on Classic Q, Quality, Service stuff. We will Port that work directly to Crimson it's exactly orthogonal, so it'll it will go into Crimson eventually, but that's what I was working on uh Fusion how's it going.

B

Yeah I'm just uh back to work yesterday, so I'm still reviewing the LBA, optimization and I will send out the comment today uh and there's one place was pointing out uh here.

B

The link, so the goal of the parent chart link is to uh is is that we will have benefits not to look up into the cash indexes and The Sims. Looking at the the pr schemes they are, there are more use cases that we can skip looking up the transactional extents and also uh the look up into the cache which the method name is Cash Curry cash, it is also seems unnecessary, so uh so, in short, there are still considerable considerable benefits we can get from the parent, Child, Link, optimization, cool and.

A

uh I was just gonna suggest that we don't necessarily have to nail all that for this PR we can come back on a subsequent PR and make further improvements.

B

Well, I think that's just simple uh change, not fair enough yeah and for another PR uh I. Think I I might need some help and feedback, whether it is appropriate for merge or is there still anything missing and I think this will uh simplify Chinese work but I don't really see, there's any incorrect impact to the OSD logic.

A

Oh I'm, sorry I told you I was going to review this, but I didn't sorry. I got very busy. I I will really do this tomorrow for real.

B

Okay, thank you.

A

B

No problem, so that's all.

A

Right uh harsh.

C

Hey hello, uh so from the QE side uh during the RBD testing last week uh we found five more failures with our uh five more features of test cases from our district that we were executing through automation. Now, out of these five failures upon an investigation, we found that two were actually false failures.

C

It was just happening because of the uh added message that we have in our uh STD outstream, the ones which are the warning messages, the following dangerous and experimental features and enabled Crimson, so those those were causing those false failures, because we were trying to capture uh the list of images that we have in RBD, so uh those two were resolved, but that's we need further investigation and I have not raised bug photos because I was I.

C

Do recall that I was told that RBD performance is not absolutely stable, so I just want to have a discussion with netsin first about those videos and if needed, I'll raise the bug for those. uh There was asked for the one of the bugs that was raised previously, which was about the pool. Completion and I have been working on that, but my cluster setup yesterday got messed up. So I wasn't able to provide that information, but I'll try to provide that information as soon as possible on that of steam.

C

Tracker itself, that's pretty much it from uh my side and and this week we'll try to cover rest of the Shadows test which were not executed previously. These will mostly be focused on the cool functionalities, so.

A

C

That's about it.

A

Okay sounds good.

D

Last week, I modified the medical system here and update it and still debugging on the vertical OST uh single SD Sims works and multiple OSD amid a third in the appearing event. So.

D

B

A

All right sounds good, uh let's see, um as mentioned I'll be out next week for several con and uh I'll be back the week after that, though, anyone have anything else, they want to talk about.

A

C

Be uh so if you you'll, be absolutely still have this meeting next week.

A

C

Thank you, and this this will be. The link will switch to just see probably uh fortnite, that right.

A

Next week, we'll still be blue jeans the week after that, yes, I will probably try to swap it to Jesse. I I will send out a link several days before that, though, so people can try it out, and let me know if it doesn't work.

C

A

Next week, it'll be the same like yeah. Thank you. Bye.

B