Okay I think I can respond myself, the pool is created with a default min_size of 3, so when one of the OSDs goes down, the pool doenst perform any IO, manually changing the the pool min_size to 2 worked great.
El 24/10/2017 a las 10:13, Jorge Pinilla López escribió: > I am testing erasure code pools and doing a rados test write to try > fault tolerace. > I have 3 Nodes with 1 OSD each, K=2 M=1. > > While performing the write (rados bench -p replicate 100 write), I > stop one of the OSDs daemons (example osd.0), simulating a node fail, > and then the hole write stops and I can't write any data anymore. > > 1 16 28 12 46.8121 48 1.01548 > 0.616034 > 2 16 40 24 47.3907 48 1.04219 > 0.923728 > 3 16 52 36 47.5889 48 0.593145 > 1.0038 > 4 16 68 52 51.6633 64 1.39638 > 1.08098 > 5 16 74 58 46.158 24 1.02699 > 1.10172 > 6 16 83 67 44.4711 36 3.01542 > 1.18012 > 7 16 95 79 44.9722 48 0.776493 > 1.24003 > 8 16 95 79 39.3681 0 - > 1.24003 > 9 16 95 79 35.0061 0 - > 1.24003 > 10 16 95 79 31.5144 0 - > 1.24003 > 11 16 95 79 28.6561 0 - > 1.24003 > 12 16 95 79 26.2732 0 - > 1.24003 > > Its pretty clear where the OSD failed > > On the other hand, using a replicated pool, the client (rados test) > doesnt even notice the OSD fail, which is awesome. > > Is this a normal behaviour on EC pools? > ------------------------------------------------------------------------ > *Jorge Pinilla López* > jorp...@unizar.es > Estudiante de ingenieria informática > Becario del area de sistemas (SICUZ) > Universidad de Zaragoza > PGP-KeyID: A34331932EBC715A > <http://pgp.rediris.es:11371/pks/lookup?op=get&search=0xA34331932EBC715A> > ------------------------------------------------------------------------ > > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com -- ------------------------------------------------------------------------ *Jorge Pinilla López* jorp...@unizar.es Estudiante de ingenieria informática Becario del area de sistemas (SICUZ) Universidad de Zaragoza PGP-KeyID: A34331932EBC715A <http://pgp.rediris.es:11371/pks/lookup?op=get&search=0xA34331932EBC715A> ------------------------------------------------------------------------
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