Re: "command 0x25 timeout, stat 0x50 host_stat 0x1"

[Andy Smith <andy@lug.org.uk>]

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On Sat, Jun 03, 2006 at 05:40:07PM -0700, Patrik Jonsson wrote:
> Andy Smith wrote:
> > Booting the system with a Knoppix 4 DVD (kernel version 2.6.12), I
> > went to set up the md arrays and got a syslog full of this:
> > 
> > ata2: command 0x25 timeout, stat 0x50 host_stat 0x2
> > ata1: command 0x25 timeout, stat 0x50 host_stat 0x1
> > ata1: command 0x25 timeout, stat 0x50 host_stat 0x1
> > ata1: command 0x25 timeout, stat 0x50 host_stat 0x2
> > 
> > as well as a painfully slow (~100K/sec) initial resync.

[...]

> I shot in the dark, but cabling might be a culprit. I've had some issues
> with cables, both with the ridiculously unreliable SATA connectors
> coming out a little as well as with cables which must have been
> insufficiently shielded.

It actually seems to have been power related.  I'm using Icydock
SATA disk chassis which have two molex power connectors and one SATA
power connector for 3 drives.  I had thought that the differing
types made it an either/or situation, i.e. that it would be happy
with the two molex.  The "documentation" is what I would charitably
call terse.  Anyway after putting in the 3rd SATA power this problem
went away.

Cheers,
Andy

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