Re: [Qemu-devel] [PATCH] report read/write errors to IDE guest driver as ECC errorsj

[Jamie Lokier]

Samuel Thibault wrote:
> Actually no, see the thread
> "ext3 seems to ignore ECC errors"
> http://marc.info/?l=linux-kernel&m=121786230719154&w=2
> 
> > Pausing the guest denies the guest the ability to take whatever action
> > it really wants to.
> 
> Sure, but I'm afraid of e.g. guests that would handle it by thinking
> "bad sector, let's mark it as such and try another one".

Yes, there are guests which queue writes which must be ordered, too,
and if an early one fails, they still submit the later ones.

It would be good if QEMU, having failed one write due to its metadata
issues, could fail _all_ subsequent writes to that disk until told
it's ok.  No point having a few scattershot sectors written.

-- Jamie