Xiang Li ba9a46aa02 storage: initial snapshot and restore
Snapshot takes an io.Writer and writes the entire backend data to
the given writer. Snapshot writes a consistent view and does not
block other storage operations.

Restore restores the in-memory states (index and book keeping) of
the storage from the backend data.
2015-06-10 11:32:10 -07:00
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2015-06-05 09:22:44 -07:00