Re: 2.6.34 PDC20268 PATA IO error loop makes system unusable

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> > sd 11:0:0:0: [sdd] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
> > sd 11:0:0:0: [sdd] Sense Key : Medium Error [current] [descriptor]

That is the drive complaining about a bad block.

> > Descriptor sense data with sense descriptors (in hex):
> >        72 03 13 00 00 00 00 0c 00 0a 80 00 00 00 00 00 
> >        00 5b 23 bb 
> > sd 11:0:0:0: [sdd] Add. Sense: Address mark not found for data field
> > sd 11:0:0:0: [sdd] CDB: Read(10): 28 00 00 5b 23 4f 00 00 80 00

Which in my experience usually comes from

- The disc being unable to find the data block

- A corrupt indirect block in the file system leading to a requst for an
  out of range data block

In theory it could be an on the wire bitflip but thats a bit too
consistent to believe.

Alan
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