Den tors 8 dec. 2022 kl 18:52 skrev Charles Hedrick <hedr...@rutgers.edu>:
>
> I'm aware that the file system will remain available. My concern is about 
> long jobs using it failing because a single operation returns an error. While 
> none of the discussion so far has been explicit, I assume this can happen if 
> an OSD fails, since it might have done an async acknowledgement for an 
> operation that won't actually be possible to complete. I'm assuming that it 
> won't happen during a cephadm upgrade.

If your pool has repl=3, then the ack will only get back to the client
when all 3 replicas have the data, so a single (or even dual) OSD
failure in such a case would still not mean that this particular write
was lost. If you are down to 1 replica the pool will go read-only
until a new replica can be made, but the last write will still be
represented.

-- 
May the most significant bit of your life be positive.
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