Hi All, I recently saw a series of patches to remove multiple caches code [1] For me, having one large mirrored write cache is desirable, so I can make this structure: +--------------------------------------------------------------------------+ | btrfs raid 1 (2 copies) /mnt | +--------------+--------------+--------------+--------------+--------------+ | /dev/bcache0 | /dev/bcache1 | /dev/bcache2 | /dev/bcache3 | /dev/bcache4 | +--------------+--------------+--------------+--------------+--------------+ | Mirrored Writeback Cache (SSD) | | /dev/sda3 and /dev/sda4 | +--------------+--------------+--------------+--------------+--------------+ | Data | Data | Data | Data | Data | | /dev/sda8 | /dev/sda9 | /dev/sda10 | /dev/sda11 | /dev/sda12 | +--------------+--------------+--------------+--------------+--------------+ This way I don't have to worry about data loss when one of the SSD's or one of the hard drives fails, and I have maximum performance for the least amount of drives. With the code for multiple caches removed, what is the recommended way forward? What is the best way to use 2 SSD's with different size and speed, while keeping enough redundancy to survive a single drive failure? [1] https://lore.kernel.org/linux-bcache/20200822114536.23491-1-colyli@xxxxxxx/T/#t --- Take your mailboxes with you. Free, fast and secure Mail & Cloud: https://www.eclipso.eu - Time to change!
