An erasure encoded pool cannot be accessed directly using rbd. For this reason we need a cache pool and an erasure pool. This not only allows supporting rbd but increases performance. http://karan-mj.blogspot.de/2014/04/erasure-coding-in-ceph.html http://docs.ceph.com/docs/master/rados/operations/pools/ http://ceph.com/docs/master/rados/operations/cache-tiering/ Good luck Owen On 10/17/2014 12:13 PM, yue longguang wrote: > 1. why erasure coded pool does not work with rbd? > 2. i used rados command to put a file into erasue coded pool,then rm > it. why the file remains on osd's backend fs all the time? > 3. what is the best use case with erasure coded pool? > > 4. command of 'rados ls' is to list objects, where are the object-name stored? > 5.when a rbd file is put on erasure coded pool, where is the > infomation(rbd name) of the rbd stored? > > thanks > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
