dm-raid45 - A Device-Mapper target for RAID4 and RAID5 mappings
summary
dm-raid45 is a device-mapper target for Linux 2.6 implementing RAID4 (dedicated parity) and RAID5 (rotating parity) as a mapping plugin. It supports background synchronization using a dirty-log to track and resync dirty regions at activation (including full resync for new sets), allows full read/write access during resynchronization, and can operate degraded with a missing drive and later resynchronize a replaced drive. The talk also includes a brief overview of the Device-Mapper architecture and the dm-raid45 feature set.
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