On Thu, Jul 27, 2017 at 9:33 AM, Ivan Sizov <sivan606@xxxxxxxxx> wrote: > I've just noticed a huge number of errors on one of the RAID's disks. > "btrfs dev stats" gives: > > [/dev/sdc1].write_io_errs 0 > [/dev/sdc1].read_io_errs 305 > [/dev/sdc1].flush_io_errs 0 > [/dev/sdc1].corruption_errs 429 > [/dev/sdc1].generation_errs 0 > > [/dev/sda1].write_io_errs 58331 > [/dev/sda1].read_io_errs 57438 > [/dev/sda1].flush_io_errs 37 > [/dev/sda1].corruption_errs 10110 > [/dev/sda1].generation_errs 0 You'll need to translate the sda device to ata device, and then do a search for kernel messages. I suspect persistent bad sector on this drive, and write failures are always disqualifying but Btrfs won't eject this device. Read errors are not a big problem. Read errors along with corruptions aren't necessarily a big problem. Write errors are a big problem. -- Chris Murphy -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
