bcache cache-sets

Posted May 14, 2012 20:49 UTC (Mon) by Lennie (subscriber, #49641)
In reply to: A bcache update by corbet
Parent article: A bcache update

Also as briefly mentioned in the older article: bcache has cache-sets, you can assign several SSDs to a backing store.

Eventually bcache is supposed to get support for mirroring the dirty data, so your dirty data will be stored on two SSDs before it is written to your already redundant backing store (like a RAID1 of HDDs).

Any data that is only a cached copy of data already written to the backing store will only be stored ones on one of the SSDs.

When that has been added that should take away most concerns people might have about their data.