IIRC, the version got increased once the stats of the PG got changed, that is properly the reason why you saw changing with client I/O. Thanks, Guang ---------------------------------------- > Date: Thu, 17 Sep 2015 16:55:41 -0600 > From: robert@xxxxxxxxxxxxx > To: ceph-users@xxxxxxxxxxxxxx > Subject: pgmap question > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA256 > > My understanding was that pgmap changes only when the location of a PG > changes due to backfill or recovery. However, watching ceph -w shows > that it increments about every second even with a healthly cluster and > client I/O. If there is no client I/O, it seems to not increment. > > What am I missing that causes the pgmap to change? Do these pgmap > changes have to be computed by the monitors and distributed to the > clients? Does the pgmap change constitute a CRUSH algorithm change? > > Thanks, > - ---------------- > Robert LeBlanc > PGP Fingerprint 79A2 9CA4 6CC4 45DD A904 C70E E654 3BB2 FA62 B9F1 > -----BEGIN PGP SIGNATURE----- > Version: Mailvelope v1.0.2 > Comment: https://www.mailvelope.com > > wsFcBAEBCAAQBQJV+0ToCRDmVDuy+mK58QAA05sP/ji8sLjUKzmjobZNEqob > ZPce1AAC3GazNu5XSUsf+mTHQD3A8T7OdqyLkw1qqMMauZW4qWYPQGtFFUKJ > yTGTzwX1T8upd9mySIJ0rh1j/ZVscYlnTwt2iabooWv0syQ8fly6dCxZQyQn > e6qMIqzMKeIxq2uwvXM/r3ft2RCTiCgmyGAPDx7IUUWNIoF7Nkkzezy5tJOF > aGA6P3ibYgFQcKDqEafRm4WsPh7HqyDd/MC0vrw0QQsCtZSxIjoKzL5ZASQh > +Fb046ewDAVRtViYsny27kvMwjNcSAEGESM8horZ7cDDLl9wmNqu2gXqE5/A > GgKsvHc5ZkwZR4PwXyeO6XQUIaHoxuzUNYbyPXH0mIrLrmPWlL6FFjvSt5Qk > segXcVF0p8STKMowEH9bn2K8ytKc0dxdWXptcdS8Zh90S2Xabnzdhlz8aUcC > 1Z2xSlTN8aBwHtrlJxDvdKuN3XR4sZEYCtolhzgetH71aP35uUaFSoITLFX5 > ZrjuadXvwjEGPD6K0TM3L33D72G7gomH6Ws231Xpt9H1TG4YHI1Dz4SLNzcj > ikbN30WyOcNha8QavSIlz7wd/RnR094E/9Su6NMEJcu14NsmhO+ykPc7hhMk > SPe40P/AZzHJ87coC5jB0bd0rJrBVOyN262oSM48GEIsmDX+wyPiVRWI727x > d+jS > =gSWw > -----END PGP SIGNATURE----- > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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