On Mon, Jul 24, 2017 at 10:04:51PM +0200, Pavel Machek wrote: > Question for you was... Is the first 1KiB of each ext4 filesystem still > free and "reserved for a bootloader"? Yes. > If I needed more for bcache superblock (8KiB, IIRC), would that be > easy to accomplish on existing filesystem? Huh? Why would the bcache superblock matter when you're talking about the ext4 layout? The bcache superblock will be on the bcache device/partition, and the ext4 superblock will be on the ext4 device/partition. - Ted
