Ph. Marek [philipp.marek@xxxxxxxxxx] wrote: > Hello everybody! > > > I'd like to mirror write accesses to a block-device to two devices, get all > all *read* accesses from one of these, and if it fails, to fallback to the > other device. This is exactly what 'mirror' target does (dm-raid1.c) without read-balancing. But read on... > The usage would be to use some kind of NAS box as persistent network block > device, with some other machine with a lot of RAM as cache server; the cache > server would get asked for data, and if it's not available, the request > should go to the NAS directly. I think, you are better of using the cache server as some kind of NFS server as 'mirror' target's failure handling is heavy-weight. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
