Re: [RFC 0/4] POC: Generating realistic block errors

[Tony Asleson <tasleson@redhat.com>]

On 9/20/19 12:28 PM, Tony Asleson wrote:
> On 9/20/19 4:22 AM, Stefan Hajnoczi wrote:
>> blkdebug is purely at the QEMU block layer level.  It is not aware of
>> storage controller-specific error information or features.  If you want
>> to inject NVMe- or SCSI-specific errors that make no sense in QEMU's
>> block layer, then trying to do it in blkdebug becomes a layering
>> violation.  This justifies adding a new error injection feature directly
>> into AHCI, virtio-scsi, NVMe, etc devices.
> 
> Good discussion point...
> 
> In my opening use case for this POC I'm generically trying to create an
> unrecoverable media error for a specific sector.  For each of the
> different device types it's different on how that error is conveyed and
> the associated data in transfer.
> 

I would like to get some additional clarification on this point.  Should
I be investing more time integrating my proposed functionality into
blkdebug or other?

Sorry for the long response time, got sidetracked with other stuff.

Thanks,
Tony