On 5/26, on device sde I receive the error “368 Offline uncorrectable sectors.” On the same date and the same time, on device sde, I receive the errork “368 Currently unreadable (pending) sectors.”
On 4/28, I received the same two errors, but this time on device sdc.
Then on 1/9, I receive the same two errors but this time on device sdd.
Then on 1/7, I receive the same two errors on device da2.
Have you rebooted the system at all in between these dates? It is fairly common that the sda/b/c/etc get re-mapped to different physical drives. You’d want to confirm the SN# of the drive at the time of the error.
I’d go through the smart outputs very carefully & I’d bet you’d find a single drive with the 368 dead sectors… This only applies if you run regular SMART tests (long) - if not, then run those first.
Good news is that so far no data lost & pool looks healthy. Bad news is that one of those drives is reporting 368 dead sectors that it has remapped to healthy ones & you should consider getting a replacement once you figure out which SN# it is.