Re: Why is my mon store.db is 220GB?

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Hmm.  This sounds very similar to the problem I reported (with
debug-mon = 20 and debug ms = 1 logs as of today) on our support site
(ticket #438) - Sage, please take a look.

On Mon, Aug 12, 2013 at 9:49 PM, Sage Weil <sage@xxxxxxxxxxx> wrote:
> On Mon, 12 Aug 2013, Jeppesen, Nelson wrote:
>> Joao,
>>
>> (log file uploaded to http://pastebin.com/Ufrxn6fZ)
>>
>> I had some good luck and some bad luck. I copied the store.db to a new monitor, injected a modified monmap and started it up (This is all on the same host.) Very quickly it reached quorum (as far as I can tell) but didn't respond. Running 'ceph -w' just hung, no timeouts or errors. Same thing when restarting an OSD.
>>
>> The last lines of the log file   '...ms_verify_authorizer..' are from 'ceph -w' attempts.
>>
>> I restarted everything again and it sat there synchronizing. IO stat reported about 100MB/s, but just reads. I let it sit there for 7 min but nothing happened.
>
> Can you do this again with --debug-mon 20 --debug-ms 1?  It looks as
> though the main dispatch thread is blocked (7f71a1aa5700 does nothing
> after winning the election).  It would also be helpful to gdb attach to
> the running ceph-mon and capture the output from 'thread apply all bt'.
>
>> Side question, how long can a ceph cluster run without a monitor? I was
>> able to upload files via rados gateway without issue even when the
>> monitor was down.
>
> Quite a while, as long as no new processes need to authenticate, and no
> nodes go up or down.  Eventually the authentication keys are going to time
> out, though (1 hour is the default).
>
> sage
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