Re: [PATCH] scsi_lib.c: continue after MEDIUM_ERROR

Matt Mackall wrote:

..
Also worth considering is that spending minutes trying to reread
damaged sectors is likely to accelerate your death spiral. More data
may be recoverable if you give up quickly in a first pass, then go
back and manually retry damaged bits with smaller I/Os.

All good input.  But what was being debated here is not so much
the retrying of known-bad sectors, but rather what to do about
the kiBs or MiBs of sectors remaining in a merged request after
hitting a single bad sector mid-way.

Currently, SCSI just abandons the entire remaining workload.

Cheers
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