Re: Over 13,000 osdmaps in current/meta

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It's good to hear that I'm not the only one affected by this!  After the
node was brought back into the cluster (I weighted it out for hardware
repairs) it appears to have removed some of the old maps, as I'm down to
8,000 now.  Although I did find another OSD in the cluster which has
95,000 osd maps (46GB)!  That's substantial considering each OSD in our
cluster is only 1.2TB.

Bryan

From:  ceph-users <ceph-users-bounces@xxxxxxxxxxxxxx> on behalf of Tom
Christensen <pavera@xxxxxxxxx>
Date:  Thursday, February 25, 2016 at 10:36 AM
To:  "ceph-users@xxxxxxxxxxxxxx" <ceph-users@xxxxxxxxxxxxxx>
Subject:  Re:  Over 13,000 osdmaps in current/meta


>We've seen this as well as early as 0.94.3 and have a bug,
>http://tracker.ceph.com/issues/13990
><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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