I wonder if anyone had this happen or is familiar with such a situation. I have a HighPoint RocketRAID 2720SGL controller managing 7 disks in a software RAID6. So far it was running smoothly for about 4 years. Recently, at one point all the disks disappeared. Looking at the logs I could see that the disks completely stopped responding and 3 minutes later all reported read failures and the raid dropped to 0 out of 7 up. The disks do not have proper error handling to they are set to 180s timeout (at boot time). I think this accounts for the 3 minutes delay between no response and disk errors logged. 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? TIA -- Eyal Lebedinsky (eyal@xxxxxxxxxxxxxx) -- 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