On Thu, 21 Sep 2017 21:12:36 +1000 Eyal Lebedinsky <eyal@xxxxxxxxxxxxxx> wrote: > It looks like the controller failed as all 7 disks disappeared together and did not respond > to any i/o or even smart. > > After power off/on things look OK. The raid6 did a very short recovery, then the ext4 fs did > a quick recovery. fsck found no problems. > > I later started a raid 'check' but it failed in less that an hour (out of 10) in the same way. > A day later I tried again and it failed within 15 minutes. > > So far it looks like nothing was lost but I am uncomfortable with this situation. > No surprise here... > > The controller did not log any errors. > > Does this look familiar to anyone? The controller is based on the Marvell 9485 chip and Marvell SATA/RAID controllers seem to have a bad reputation for reliability: https://www.jethrocarr.com/2013/11/24/adventures-in-io-hell/ https://www.youtube.com/watch?v=010urq9wY3A I have also faced some CRC errors or disk drop-outs/reconnects on 9123 cards, and in one case all disks (or possibly the controller itself) disappear from the system until reboot on a 88SX7042 based controller. -- With respect, Roman -- 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
