Re: Drive errors on boot



--- Lowell Gilbert
<freebsd-questions-local@xxxxxxxxxxxxxxx> wrote:

Bryan Curl <bc3910@xxxxxxxxx> writes:

My apologies if this is a repost. It seems either
I
had a gmail problem or list never posted the
question.
I have subscribed with another address to monitor
problem.

Anyway, here is my question again.

I get the following errors from dmesg on one of my
ide
drives on boot.
Other similar drives dont error and are setup the
same
in bios (except cylinder & block config of course)
System and this drive seem to work fine otherwise.
I
re-fdisk this one but it still does this error.

FreeBSD 6.0-RELEASE-p6 #0: Tue Apr 4 09:43:53 MDT
2006

ad1: 1916MB <Maxtor 72004 AP 2A3C0B31> at
ata0-slave
WDMA2
ad1: FAILURE - READ_DMA status=51<READY,DSC,ERROR>
error=10<NID_NOT_FOUND> LBA=3924359
ad1: FAILURE - READ_DMA status=51<READY,DSC,ERROR>
error=10<NID_NOT_FOUND> LBA=3924343
ad1: FAILURE - READ_DMA status=51<READY,DSC,ERROR>
error=10<NID_NOT_FOUND> LBA=3924356
ad1: FAILURE - READ_DMA status=51<READY,DSC,ERROR>
error=10<NID_NOT_FOUND> LBA=3924359

This is probably a hardware problem. My first guess
would be
cabling. Try swapping the cable. And make sure
there is a master on
the bus if this one is probing as a slave.

This is the primary slave drive. Primary master is the
boot drive where OS lives. The master is cabled on the
end connector and the slave is connected to the middle
connector on the cable.

The supplied documentation on the drive jumpers is
vague at best. It only makes mention of one jumper
(master or slave positions) There are 3 other jumpers
on the drive that are not mentioned.

Looks to me like DMA feature isn't working but I dont
know if this is activated by a jumper or by firmware
somehow.


I dont know what causes these errors either.

dc0: failed to force tx and rx to idle state
dc0: failed to force tx and rx to idle state


The driver tried to force the transmitter and
receiver to be "idle"
temporarily, and failed. There are a number of
different cases where
the driver tries to do this, so it's hard to guess
exactly what's
happening this time. Some of the relevant variables
are: whether this
happens at boot time, whether it happens after an
underrun or overrun,
and which real controller chip you have.


I have seen this error on every FreeBSD installation I
have ever had. To my knowledge, it never seemed to
bother anything. I just hate watching errors scroll by.



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