-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 hmmm... http://docs.ceph.com/docs/master/rados/operations/cache-tiering/#relative-sizing makes it sound like it should be based on the size of the pool and that you don't have to set anything like max bytes/objects. Can you confirm that cache_target_{dirty,dirty_high,full}_ratio works as a ratio of target_max_bytes set? - ---------------- Robert LeBlanc PGP Fingerprint 79A2 9CA4 6CC4 45DD A904 C70E E654 3BB2 FA62 B9F1 On Thu, Oct 15, 2015 at 3:32 PM, Nick Fisk wrote: > > > > >> -----Original Message----- >> From: ceph-users [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of >> Robert LeBlanc >> Sent: 15 October 2015 22:06 >> To: ceph-users@xxxxxxxxxxxxxx >> Subject: Cache Tiering Question >> >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA256 >> >> ceph df (ceph version 0.94.3-252-g629b631 >> (629b631488f044150422371ac77dfc005f3de1bc)) is showing some odd >> results: >> >> root@nodez:~# ceph df >> GLOBAL: >> SIZE AVAIL RAW USED %RAW USED >> 24518G 21670G 1602G 6.53 >> POOLS: >> NAME ID USED %USED MAX AVAIL OBJECTS >> rbd 0 2723G 11.11 6380G 1115793 >> ssd-pool 2 0 0 732G 1 >> >> The rbd pool is showing 11.11% used, but if you calculate the numbers > there >> it is 2723/6380=42.68%. > > I have a feeling that the percentage is based on the amount used of the > total cluster size. Ie 2723/24518 > >> >> Will this cause problems with the relative cache tier settings? Do I need > to set >> the percentage based on what Ceph is reporting here? > > The flushing/eviction thresholds are based on the target_max_bytes number > that you set, they have nothing to do with the underlying pool size. It's up > to you to come up with a sane number for this variable. > >> >> Thanks, >> - ---------------- >> Robert LeBlanc >> PGP Fingerprint 79A2 9CA4 6CC4 45DD A904 C70E E654 3BB2 FA62 B9F1 ----- >> BEGIN PGP SIGNATURE----- >> Version: Mailvelope v1.2.0 >> Comment: https://www.mailvelope.com >> >> wsFcBAEBCAAQBQJWIBVGCRDmVDuy+mK58QAAXEYQAKm5IBGn81Hlb9az4 >> 52x >> hSH6onk7mJE7L2s5FnoJv2sNW4azhDEVKGQBE9vvhIVBhhtKtnqdzu3ytk6E >> EUFuPBzUWLJyG3wQtp3QC0PdYzlGkS7bowdpZqk9PdaYZYgEdqG/cLEl/eAx >> LGIUXmr6vIuNhnntGIIYeUAiWXA7b5qzOKbef6OlOp7Mz6Euel9S8ycZlSAR >> eBQ5hdLSFoFai5ldyV+/hmqLnujOfanRFC8pIYr41aKe7wBOPOargLGQdka3 >> jswmcf+0hV7QqZSOjJijDYvOgRuHBFK6cdyP9SRKxWxG7uH+yDOvya0TqOob >> 1yDomYC1zD2uzG9+L5Iv6at8fuBF5xFKPqax9N4WQj3Oj9fBwioQVBocNxHc >> MIlQnvnLeq6OLtdfPoPignTAHIH2RrvAmdwYkSCuopjUSTkmBsyBLIiiz/KI >> P4mSXAxZb0UF4pbCDgdYG6qUEywR/enGsT1lnmNLx4vY8W/yz9xQ3o3JnIpD >> pWyo9zJ8Ugnwvihbo7xKe+EZOeJL0YF4BiyAprH5pKFdQcAWcV98zWHnLBxd >> EFHyN9fHsVdw0UsxIUBZFfM1u4S7fchgVeFfiTSdGqd/dWHQCHKJPNBSJnae >> aPKTyvg77N6zTn04VGspfenR+svGbkAtUfO2HJ1Kkd4/wZ9GIzsS1ovPZFsM >> jJe4 >> =YSyj >> -----END PGP SIGNATURE----- >> _______________________________________________ >> ceph-users mailing list >> ceph-users@xxxxxxxxxxxxxx >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > > > -----BEGIN PGP SIGNATURE----- Version: Mailvelope v1.2.0 Comment: https://www.mailvelope.com wsFcBAEBCAAQBQJWICJwCRDmVDuy+mK58QAAyTUQALkwOnB++bXto+cM0iSZ B3nZgvl9FKZnujb0MUIiS29a+Y2nnBpAGgHbF4Y9ngnDQYNZ0yf1DD2wYad2 rll6pYeWRRYSmaBCBfdPlqbbVw8WpjdXLR9FtLFfUR2V+Ghf4U83F8iKiWn1 +6DqouHMA/auHjEr49w+Ue0kpKSfItH/9LkVjYQBKp6E7tyOSsrzcM1milKR lwsIOewiKvsg4neDLqkdqaO6+bYuaDJmgN+hEqzl7lxbzt5pJbzfknpiAewm GTw8C2AUbzcYqIhzqWcY9Jiy6ZZkYAPDODsJpkc/Pubnq73jlkllB4JaQpJy 2964DynNn8jBAI9JJpLyldtKPEofmkumzZ6tPXgLDuo2VuV+hp/wVadZKy2k PDhms1dpeLFM8NsgOToSpO6Ej1l1857C5+cy3EeTlKqgs6z1QbTwNvUeeCpk /ORObJQCa7teNEM1c33oEJ3V1LOx7SfsEn1A6PVaaUegmMEEa6Cb8Va2RYl8 5fhXqIcsU9KWHDmq8+MZ9x67etAucXKJmPQpIzJD6M9WtsWsDupsuJ1MgCKB pxhqjwujuaZWfF+W3HEuOOP7OcXbj2U3RO1V3HOr9N0cLFTf+vuefIzOtgs1 qdBPrxIUNznfYXarclFuJzCWPzKpDTdKbLwYUcbh9hKayRpll3DGOW7qUX3u eNXR =cI+5 -----END PGP SIGNATURE----- _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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