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Subject: Re: After a disk's disappearance, ar0 (raid5) hung...
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On 11/08/10 01:22, Mikhail T. wrote:
> All of a sudden, one of the three parts (ad8) of my ar0 threw a fit. As
> one might expect, the OS logged the event and told me, the array is now
> in degraded mode.
> 
> Unfortunately, all I/O on the array is hanging. The machine is otherwise
> responsive, but processes trying to access the array hang in either
> "biord" or "getblk". I'm pretty sure, that, if I reboot, things will get
> back to normal. But I was hoping to buy some redundancy by using RAID5...
> 
> If anybody is interested in any diagnostics -- let me know, I'll hold
> off rebooting for 12 hours. Yours,

Details?

I don't remember of any combination of devices which would use ATA
devices (adX), RAID-5 and have "arX" as device name.

What volume manager are you using? On which FreeBSD version?