Mon gets flooded with log messages for default log level

From: Aanchal Agrawal <Aanchal.Agrawal@sandisk.com>
To: "ceph-devel@vger.kernel.org" <ceph-devel@vger.kernel.org>
Subject: Mon gets flooded with log messages for default log level
Date: Fri, 5 Sep 2014 12:26:16 +0000	[thread overview]
Message-ID: <7F4FDDF05D5B3241ABA5EB82D169E31E054E7E27@SACMBXIP02.sdcorp.global.sandisk.com> (raw)

Hi,

With reference to commit f7d1902ccf9d5bb97cda626d718c3bb02f991a6d, 'Paxos' default level has been increased to 1.
This cause mon to get flooded with the following message,  thus causes OS Drive(160GB) to get filled in 4-5 hours.

Log Snippet ::
==================
2014-09-01 16:35:11.527734 7f7efe706700 1 mon.rack6-ramp-1@0(leader).paxos(paxos active c 1..712) is_readable now=2014-09-01 16:35:11.527735 lease_expire=2014-09-01 16:35:13.637940 has v0 lc 712
2014-09-01 16:35:11.527773 7f7efe706700 1 mon.rack6-ramp-1@0(leader).paxos(paxos active c 1..712) is_readable now=2014-09-01 16:35:11.527774 lease_expire=2014-09-01 16:35:13.637940 has v0 lc 712
2014-09-01 16:35:11.527807 7f7efe706700 1 mon.rack6-ramp-1@0(leader).paxos(paxos active c 1..712) is_readable now=2014-09-01 16:35:11.527807 lease_expire=2014-09-01 16:35:13.637940 has v0 lc 712
2014-09-01 16:35:11.527840 7f7efe706700 1 mon.rack6-ramp-1@0(leader).paxos(paxos active c 1..712) is_readable now=2014-09-01 16:35:11.527840 lease_expire=2014-09-01 16:35:13.637940 has v0 lc 712
2014-09-01 16:35:11.527874 7f7efe706700 1 mon.rack6-ramp-1@0(leader).paxos(paxos active c 1..712) is_readable now=2014-09-01 16:35:11.527875 lease_expire=2014-09-01 16:35:13.637940 has v0 lc 712
==================

==================
src/mon/Paxos.cc
dout(1) << "is_readable now=" << ceph_clock_now(g_ceph_context) << " lease_expire=" << lease_expire
          << " has v" << v << " lc " << last_committed << dendl;
==================

Incrementing 'log level' of this message to 2 or something else will solve this problem of mon space getting full quickly.

Moreover is this message that useful to get printed with default debug level '1'?
Let me know if I am missing something here.

Thanks,
Aanchal

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