Hi Shinobu
c./ After recovering the cluster, I though I was in a cephfs situation where
I had
c.1 files with holes (because of lost PGs and objects in the data pool)
c.2 files without metadata (because of lost PGs and objects in the
metadata pool)
What does "files without metadata" mean? Do you mean their objects
were in the data pool but they didn't appear in your filesystem mount?
c.3 metadata without associated files (because of lost PGs and objects
in the data pool)
So you mean you had files with the expected size but zero data, right?
I've tried to run the recovery tools, but I have several doubts which I did
not found described in the documentation
- Is there a specific order / a way to run the tools for the c.1, c.2
and c.3 cases I mentioned?
I'm still trying to understand what you try to say in your
original message but I have not been able to get you yet.
Can you summarize like:
1. What current status is.
e.g: working but not as expected.
2. What your thought (, guess or whatever) is about your cluster.
e.g: broken metadata, data or whatever you're thinking now.
3. What you exactly did shortly not bla bla bla...
4. What you really want to do (shortly)?
I was trying to give the full context of my tests so that all the
information is available.
After Jonh's response, and some further thinking, I think I understand
partially what actions have to be done in a scenario like the one I've
created
The whole idea is, given a scenario where there is loss of data and
metadata, what can be done from the admin side to recover the cephfs.
Nevertheless, since this email thread is already long, I'll try to send
a new email more focused.
Cheers and Thanks for the replies
Goncalo
--
Goncalo Borges
Research Computing
ARC Centre of Excellence for Particle Physics at the Terascale
School of Physics A28 | University of Sydney, NSW 2006
T: +61 2 93511937
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