On 03/31/2014 03:03 PM, Brendan Moloney wrote:
Hi,
I was wondering if RBD snapshots use the CRUSH map to distribute
snapshot data and live data on different failure domains? If not, would
it be feasible in the future?
Currently rbd snapshots and live objects are stored in the same place,
since that is how rados snapshots are implemented. The simplest way to
store them separately would probably be an implementation of rbd
snapshots on top of regular rados objects, without using rados
snapshots. This would be a large project, but it would be simpler than
another implementation of rados snapshots since it would not require
osd changes.
Josh
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