On Mon, Mar 23 2020 at 11:03am -0400, Hannes Reinecke <hare@xxxxxxx> wrote: > Hi Damien, > > as my original plan to upgrade bcache to work for SMR devices > turned out to be more complex than anticipated I went for the > simpler approach and added a 'cache' device for dm-zoned. > It is using a normal device (eg '/dev/pmem0' :-), split it > into zones of the same size of the original SMR device, and > makes those 'virtual' zones avialable to dm-zoned in a similar > manner than the existing 'random write' zoned. > > The implementation is still a bit rough (one would need to add > metadata to the cache device, too), but so far it seems to work > quite well; still running after copying 300GB of data back and forth. > > As usual, comments and reviews are welcome. Not seeing why this needs to be so specialized (natively implemented in dm-zoned). Did you try stacking dm-writecache on dm-zoned? Mike -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
