[oops, forgot to cc the list] On Sun, Apr 26, 2015 at 8:20 PM, NeilBrown <neilb@xxxxxxx> wrote: >> And the output of mdadm --detail/-E: >> https://gist.github.com/anonymous/0b090668b56ef54bb2f0 > > What is wrong with simply including this directly in the email??? My bad; I wasn't sure whether it was appropriate to paste such a long dump inline. > Anyway: > > Bad Block Log : 512 entries available at offset 72 sectors - bad blocks present. > > that is the only thing that looks at all interesting. Particularly the last > 3 words. > What does > mdadm --examine-badblocks /dev/sd[cde]1 > show? root@ceres:~# mdadm --examine-badblocks /dev/sd[cde]1 Bad-blocks on /dev/sdc1: 3699640928 for 32 sectors Bad-blocks on /dev/sdd1: 3699640928 for 32 sectors Bad-blocks on /dev/sde1: 3699640928 for 32 sectors Hmm, that seems kind of odd to me. For what it's worth, all four drives passed a SMART self-test, and "dd > /dev/null" completed without errors on all of them. I just read about the "badblocks" tool and I'm running it now. -- David -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html