[ceph-users] Re: Whether read I/O is accpted when the number of replica is under pool's min_size

2020年12月15日(火) 18:48 Eugen Block <eblock(a)nde.ag>ag>: Thank you! I'll send a PR to fix the Pool's configuration document. Regards, Satoru Satoru > > > Zitat von Satoru Takeuchi <satoru.takeuchi(a)gmail.com>om>: > > > Hi, > > > > Could you tell me whether read I/O is acxepted when the number of replicas > > is under pool's min_size? > > > > I read the official document and found that there is a difference of the > > effect of pool's > > min_size between pool's document and the pool's configuration document. > > > > Pool's document: > > https://docs.ceph.com/en/latest/rados/operations/pools/ > >> To set a minimum number of required replicas for I/O, you should use the > > min_size setting. > > > > Pool's configuration document. > > https://docs.ceph.com/en/latest/rados/configuration/pool-pg-config-ref/ > >> osd pool default min size > > Description > > > > Sets the minimum number of written replicas for objects in the pool in > > order to acknowledge a write operation to the client. > > > > > > The former says that min_size is related to both read/write I/O. > > > > On the other hands, the latter says it's only about write I/O. So which is > > correct description? > > > > As a result of my verification, the former looks correct. > > > > I created a RGW object in a pool having 3 replicas and its min_size is 2. > > > > Both read and write aren't accepted when 2 replicas are gone. > > > > > > Thanks, > > > > Satoru > > _______________________________________________ > > ceph-users mailing list -- ceph-users(a)ceph.io > > To unsubscribe send an email to ceph-users-leave(a)ceph.io > > > _______________________________________________ > ceph-users mailing list -- ceph-users(a)ceph.io > To unsubscribe send an email to ceph-users-leave(a)ceph.io