Hi 池信泽, On 20/10/2014 06:25, 池信泽 wrote:> hi, cephers: > > When I look into the ceph source code, I found the erasure code pool not support > the random write, it only support the append write. Why? The main reason is because it is complicated. The second reason is that it as a significant impact on performances because writing 1 byte in the middle of a file would require encoding again the entire stripe that contains it. Cheers > Is that random write of is erasure code high cost and the performance of the deep scrub is very poor? > > Thanks. > > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > -- Loïc Dachary, Artisan Logiciel Libre
Attachment:
signature.asc
Description: OpenPGP digital signature
_______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
