I understand that ceph defaults to stripe in 1 Meg chunks over OSDs,
however, is it possible to force ceph to store a particular file on one
and only one OSD? I am interested in doing some work with Active
Storage, which seeks to do processing on the data on the OSD itself and
not on the client that mounts the filesystem. In traditional parallel
file systems, OSDs are usually left with a lot of processing power
unused. If the files are striped, then active storage becomes extremely
complex. So in conclusion, it would be nice if ceph were customizable
in that it would allow you to turn off striping for any files that you
specify.
-Brock
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