We've seen this as well as early as 0.94.3 and have a bug, http://tracker.ceph.com/issues/13990 which we're working through currently. Nothing fixed yet, still trying to nail down exactly why the osd maps aren't being trimmed as they should.
On Thu, Feb 25, 2016 at 10:16 AM, Stillwell, Bryan <bryan.stillwell@xxxxxxxxxxx> wrote:
After evacuated all the PGs from a node in hammer 0.94.5, I noticed that
each of the OSDs was still using ~8GB of storage. After investigating it
appears like all the data is coming from around 13,000 files in
/usr/lib/ceph/osd/ceph-*/current/meta/ with names like:
DIR_4/DIR_0/DIR_0/osdmap.303231__0_C23E4004__none
DIR_4/DIR_2/DIR_F/osdmap.314431__0_C24ADF24__none
DIR_4/DIR_0/DIR_A/osdmap.312688__0_C2510A04__none
They're all around 500KB in size. I'm guessing these are all old OSD
maps, but I'm wondering why there are so many of them?
Thanks,
Bryan
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