Re: Paxos and long-lasting deleted data

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On Thu, Jan 31, 2013 at 11:18 PM, Andrey Korolyov <andrey@xxxxxxx> wrote:
> On Thu, Jan 31, 2013 at 10:56 PM, Gregory Farnum <greg@xxxxxxxxxxx> wrote:
>> On Thu, Jan 31, 2013 at 10:50 AM, Andrey Korolyov <andrey@xxxxxxx> wrote:
>>> http://xdel.ru/downloads/ceph-log/rados-out.txt.gz
>>>
>>>
>>> On Thu, Jan 31, 2013 at 10:31 PM, Gregory Farnum <greg@xxxxxxxxxxx> wrote:
>>>> Can you pastebin the output of "rados -p rbd ls"?
>>
>>
>> Well, that sure is a lot of rbd objects. Looks like a tool mismatch or
>> a bug in whatever version you were using. Can you describe how you got
>> into this state, what versions of the servers and client tools you
>> used, etc?
>> -Greg
>
> That`s relatively fresh data moved into bare new cluster after couple
> of days of 0.56.1 release, and tool/daemons version kept consistently
> the same at any moment. All garbage data belongs to the same pool
> prefix(3.) on which I have put a bunch of VM` images lately, cluster
> may have been experienced split-brain problem for a short times during
> crash-tests with no workload at all and standard crash tests on osd
> removal/readdition during moderate workload. Killed osds have been
> returned before,at the time and after process of data rearrangement on
> ``osd down'' timeout. Is it possible to do a little clean somehow
> without pool re-creation?

Just an update: this data stayed after pool deletion, so there is
probably a way to delete garbage bytes on live pool without doing any
harm(hope so), since it is can be dissected from actual pool pool data
placement, in theory.
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