Hi, By running this command you tell bcache you want the backing device associated with a particular cache set (currently only one cache set is supported, but nevermind), so yes, you run it 12 times feeding it 12 different UUIDs. Until you register a backing device, it won't be associated with any cache set, so despite being perfectly accessible it will be working in a pass-through mode. On Fri, Jul 3, 2015 at 5:02 PM, Donald Pearson <donaldwhpearson@xxxxxxxxx> wrote: > The example information I've been able to find isn't clear on proper > implementation with multiple backing devices. The following is an > exerpt from the documentation. I have 12 backing devices (bcache0 - > bcache11).. do I run this just once against any one of the 12, one of > the 12 in particular, or do I run this 12 times, once for each of the > 12 backing devices that I want cached? > > ATTACHING: > > After your cache device and backing device are registered, the backing device > must be attached to your cache set to enable caching. Attaching a backing > device to a cache set is done thusly, with the UUID of the cache set in > /sys/fs/bcache: > > echo <UUID> > /sys/block/bcache0/bcache/attach > > Regards, > Donald > -- > 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 -- Denis -- 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
