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2013-01-24 18:05:46.617323 mon.0 [INF] pgmap v2787885: 1488 pgs: 7 active, 1481 active+clean; 1801 GB data, 7504 GB used, 3715 GB / 11355 GB avail
2013-01-24 18:05:46.617561 mon.0 [INF] osdmap e23977: 13 osds: 13 up, 13 in
2013-01-24 18:05:46.799684 mon.0 [INF] mdsmap e82997: 1/1/1 up {0=1=up:active(laggy or crashed)}
2013-01-24 18:05:46.799894 mon.0 [INF] monmap e1: 3 mons at {0=172.31.160.4:6789/0,1=172.31.160.6:6789/0,2=172.31.160.7:6789/0}
2013-01-24 18:05:47.183672 mon.0 [INF] mdsmap e82998: 1/1/1 up {0=1=up:active(laggy or crashed)}
2013-01-24 18:05:47.549714 mon.0 [INF] pgmap v2787886: 1488 pgs: 7 active, 1481 active+clean; 1801 GB data, 27107 PB used, 38045 PB / 27107 PB avail
2013-01-24 18:05:50.675531 mon.0 [INF] osdmap e23978: 13 osds: 13 up, 13 in full
[...]
2013-01-24 18:06:12.241923 mon.0 [INF] pgmap v2787894: 1488 pgs: 1488 active+clean; 1801 GB data, 27107 PB used, 38045 PB / 27107 PB avail
2013-01-24 18:06:14.716369 mon.0 [INF] pgmap v2787895: 1488 pgs: 1488 active+clean; 1801 GB data, 26233 PB used, 24238 PB / 26233 PB avail
[...]
2013-01-24 18:06:19.632978 mon.0 [INF] pgmap v2787898: 1488 pgs: 1488 active+clean; 1801 GB data, 11078 PB used, 11413 PB / 11078 PB avail
[...]
2013-01-24 18:06:34.573794 mon.0 [INF] pgmap v2787905: 1488 pgs: 1488 active+clean; 1801 GB data, 11078 PB used, 11413 PB / 11078 PB avail
2013-01-24 18:06:35.898679 mon.0 [INF] pgmap v2787906: 1488 pgs: 1488 active+clean; 1801 GB data, 1878 PB used, 5699 PB / 1878 PB avail
2013-01-24 18:06:39.515900 mon.0 [INF] pgmap v2787907: 1488 pgs: 1488 active+clean; 1801 GB data, 7504 GB used, 3715 GB / 11355 GB avail

see the spike to PB in used and avail, leading to an apparent disk full?

no disks were harmed or stretched in the making of these ceph logs