Hi Akira, Joe, and all. Recently I've used dm-writeboost a bit. I have an opinion about the naming of migration. Writeboost call writeback from cache device to backing device "migration" as Akira said in the following his document. https://github.com/akiradeveloper/dm-writeboost/blob/develop/doc/writeboost.txt === ... (2) Migrate Daemon This daemon writes back the dirty data on the cache device to the backing device. Writeboost calls writeback "Migration". ... === However, I consier "writeback" is far straightforward word than "migration" here for most people. Since such renaming makes the usability (migration is visible to user) and code readability, it should be avoided without special reason. How about re-renaming "migration" to more straightforward "writeback"? If you agree with this idea, I'll write a patch to fix it for kernel and device-mapper-test-suite. Thanks, Satoru -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel