Deadlock with ATA disk on FreeBSD 4.8 Stable

[Matthew Reimer]

I had the same problem with bad ATA disks on -stable in the last six 
months, but I haven't tracked it down.

Matt

Martin Blapp wrote:
> Hi Soeren,
> 
> We encounter here a deadlock with a quite new ATA 120GB disk.
> The disk worked good for about 3 weeks, but now we have a strange
> problem.
> 
> There seems to be one defective file on the disk. fsck doesn't find
> it, and if I do a
> 
> cat file > /dev/null
> 
> The machine locks completly. Serial console is dead, no remote DDB
> via ALTBREAK possible anymore, no panic message, just freezed.
> 
> The evil began after we installed this ATA disk. It only happens for
> one file on this disk, the other 10000 files are fine.
> 
> Do you have a idea why break into the debugger doesn't work anymore ?
> Even if we have a hard-error on the disk, this should still work,
> shouln't it ?
> 
> Martin
> 
> Martin Blapp, <mb at imp.ch> <mbr at FreeBSD.org>
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