| CPC G06F 11/142 (2013.01) [G06F 3/0619 (2013.01); G06F 3/0632 (2013.01); G06F 3/0652 (2013.01); G06F 3/067 (2013.01)] | 20 Claims |
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1. A method for data recovery, the method comprising:
detecting power up after a non-scheduled power down;
determining active regions of a plurality of storage devices; and
rebuilding data in a stripe in the active regions according to a journal, wherein:
the journal is located in the active regions of the plurality of storage devices,
the plurality of storage devices comprise a plurality of groups of storage devices,
each bucket of a plurality of buckets owns an address space,
each bucket is operable to write to its own address space,
each address space extends over a group of storage devices,
no two buckets are operable to store into a same address space,
no two address spaces extend over the same group of storage devices, and
no two groups of storage devices are identical.
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