On Wed, 15 Jun 2016 12:46:49 +0200 Gandalf Corvotempesta wrote: > Il 15 giu 2016 09:58, "Christian Balzer" <chibi@xxxxxxx> ha scritto > > You _do_ know how and where Ceph/RBD store their data? > > > > Right now that's on disks/SSDs, formated with a file system. > > And XFS or EXT4 will not protect against bitrot, while BTRFS and ZFS > > will. > > > > Wait, I'm new to ceph and some things are not clear to me. > Even using rbd for block devices ceph still write everything as a file > on a filesystem? > Ceph RADOS, on which all other views (RBD/RADOSGW/CephFS) are based writes things to objects, which are by default 4MB in size and files on the OSDs, which in turn are currently filesystems. > I've always thought that only cephfs was using files and rbd was storing > directly to block devices with no fs under it. > That's the future with bluestore, which is K/V based storage. > Pretty similiar to glusterfs in this. > > My mistake. Christian -- Christian Balzer Network/Systems Engineer chibi@xxxxxxx Global OnLine Japan/Rakuten Communications http://www.gol.com/ _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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