Re: Set cache tier pool forward state automatically!

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On Thu, Feb 4, 2016 at 8:32 PM, Christian Balzer  wrote:
> On Wed, 3 Feb 2016 22:42:32 -0700 Robert LeBlanc wrote:

> I just finished downgrading my test cluster from testing to Jessie and
> then upgrading Ceph from Firefly to Hammer (that was fun few hours).
>
> And I can confirm that I don't see that issue with Hammer, wonder if it's
> worth prodding the devs about.
> I sorta dread the time the PG upgrade process will take when going to
> Hammer on the overloaded production server.
> But then again, a fix for Firefly is both unlikely and going to take too
> long for my case anyway.

There isn't any PG upgrading as part of the Firefly to Hammer process
that I can think of. If there is, it wasn't long. Setting noout would
prevent backfilling so only recovery of delta changes would be needed.
You don't have to reboot the node, just restart the process so it can
limit the amount of changes to only a minute or two. It's been a long
time since I did that upgrade that I just may be plain forgetting
something.

I think you are right about the fix not going into Firefly since it
will EoL this year. Glad to know that it is fixed in Hammer.

- ----------------
Robert LeBlanc
PGP Fingerprint 79A2 9CA4 6CC4 45DD A904  C70E E654 3BB2 FA62 B9F1
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