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@iska@mk.starnix.network I've migrated from #btrfs to ext4 on my laptop today. Yeah, I know, but I've never used any of the advanced features and ext4 is a tiny bit more performant. I've seen read errors very similar to the ones you've had. I did some reading and looks like it's the way btrfs works: when there is a checksum mismatch, the filesystem just marks the file unreadable forever instead of returning the corrupt data. There is no way to fix it the ext4-way, you can only overwrite the file
@iska@mk.starnix.network My SSD is perfectly fine, Micron utility says so and yours is most probably too. But the way these errors make it to the kernel logs it does look scary 😅