Please see What happens in a raid (5) when one drive or more gets a bad sector?. I have a few .jpg files (and much more serious data). Some of the .jpg files become corrupted. I can tell because they are unviewable with viewer "geeqie". I am currently using btrfs on a crucial CT512MX1 ssd bought JAN 2015.
- (question 1) What maintenance you can do on btrfs instead of "fsck"?
- (question 2) What are the software/hardware requirements for solid state disks in raid 1 to accomplish this?" e.g. must it be able to read SMART data for ssd?
Here is a discussion which is too complicated: https://linux-btrfs.vger.kernel.narkive.com/BQK0Pz9w/how-does-btrfs-handle-bad-blocks-in-raid1