Re: Device timeout reading fsbn ...

[mlelstv%serpens.de@localhost (Michael van Elst)]

mueller6725%twc.com@localhost ("Thomas Mueller") writes:

>> sysctl -w hw.wd0.use_ncq=0

>Actually that would be wd1 in my case as opposed to wd0, but is there any danger in using this sysctl, could it make the hard drive go bad more quickly?

There is no danger, it prevents the driver from queuing more than one
request to the drive. That's how older netbsd versions behaved.

While a bad disk can't be ruled out, I tend to suspect a firmware or
driver bug that gets exercised with NCQ. That would explain why there
is no error with older netbsd.


>I guess I still need to move things over to the Hitachi hard drive, including user data that could not be reinstalled.

Backing up the data is of course the first thing. But please also check
the disk with smartmontools or 'atatctl wd1 smart status' to see if itself
reports problems.


-- 
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                                Michael van Elst
Internet: mlelstv%serpens.de@localhost
                                "A potential Snark may lurk in every tree."