Re: emperor -> firefly 0.80.7 upgrade problem

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Also, are you certain that osd 20 is not up?
-Sam

On Thu, Nov 6, 2014 at 10:52 AM, Samuel Just <sam.just@xxxxxxxxxxx> wrote:
> Amusingly, that's what I'm working on this week.
>
> http://tracker.ceph.com/issues/7862
>
> There are pretty good reasons for why it works the way it does right
> now, but it certainly is unexpected.
> -Sam
>
> On Thu, Nov 6, 2014 at 7:18 AM, Chad William Seys
> <cwseys@xxxxxxxxxxxxxxxx> wrote:
>> Hi Sam,
>>
>>> Sounds like you needed osd 20.  You can mark osd 20 lost.
>>> -Sam
>>
>> Does not work:
>>
>> # ceph osd lost 20 --yes-i-really-mean-it
>> osd.20 is not down or doesn't exist
>>
>>
>> Also, here is an interesting post which I will follow from October:
>> http://lists.ceph.com/pipermail/ceph-users-ceph.com/2014-October/044059.html
>>
>> "
>> Hello, all. I got some advice from the IRC channel (thanks bloodice!) that I
>> temporarily reduce the min_size of my cluster (size = 2) from 2 down to 1.
>> That immediately caused all of my incomplete PGs to start recovering and
>> everything seemed to come back OK. I was serving out and RBD from here and
>> xfs_repair reported no problems. So... happy ending?
>>
>> What started this all was that I was altering my CRUSH map causing significant
>> rebalancing on my cluster which had size = 2. During this process I lost an
>> OSD (osd.10) and eventually ended up with incomplete PGs. Knowing that I only
>> lost 1 osd I was pretty sure that I hadn't lost any data I just couldn't get
>> the PGs to recover without changing the min_size.
>> "
>>
>> It is good that this worked for him, but it also seems like a bug that it
>> worked!  (I.e. ceph should have been able to recover on its own without weird
>> workarounds.)
>>
>> I'll let you know if this works for me!
>>
>> Thanks,
>> Chad.
>> _______________________________________________
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>> ceph-users@xxxxxxxxxxxxxx
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