Hi, I am new to bcache and I have a question regarding its use in a high availability (HA) setup. I'll be using the new LSI Syncro CS controllers with Enterprise Storage OS (ESOS) for an upcoming project. The LSI controller includes the CacheCade option for caching with SSDs, however, its only read cache in this model, so I'm primarily interested in the write-back cache feature of bcache. The Syncro CS setup puts a RAID controller in each of two hosts, and allows both hosts to share JBOD enclosures. Configured logical volumes are available for read/write on both hosts simultaneously. The idea (example) is to create a shared RAID10 volume of SSDs to use as the cache device for bcache, and then some other RAID group of 15K disks for the backing volume. Then add the bcache device on each host -- is this possible with bcache? Data corruption? We would control IO to the servers, so its not round-robin or anything like that... data would flow to only one server, and then only in the event of a fail-over, IO would be redirected to the other server. Or it might work, but we'd be asking for trouble? =) Thanks, Marc -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
