Subject: Re: UBC breaks my IDE disk!?!
To: Tom Ivar Helbekkmo <>
From: Manuel Bouyer <>
List: current-users
Date: 02/04/2001 18:21:08
On Sat, Feb 03, 2001 at 10:37:13PM +0100, Tom Ivar Helbekkmo wrote:
> [...]
> I get these, as well, on my Compaq Armada M700.  For instance:
>     pciide0:0:0: lost interrupt
>             type: ata tc_bcount: 8192 tc_skip: 0
>     pciide0:0:0: bus-master DMA error: missing interrupt, status=0x1
>     pciide0:0:0: device timeout, c_bcount=8192, c_skip0
>     wd0a: device timeout reading fsbn 143648 of 143648-143663 (wd0 bn 143711; cn 152 tn 1 sn 8), retrying
>     wd0: soft error (corrected)
> > Moreover, all the errors are reported as "soft error (corrected)"
> > but they still result in corrupted files... ;-(
> Now you're scaring me!  I haven't noticed any corruption, and I sure
> hope there isn't any lurking in data I didn't want to lose...  :-(

These messages usually mean a problem on the IDE bus; if recovery goes
well you shouldn't get any corruption.
Now, in reality, as this mean a problem on the IDE bus, when running in
multiword DMA there may be some errors on the bus which don't get reported to
the software. This shouldn't happen with Ultra/DMA as it includes data CRC

Manuel Bouyer <>