Re: [PATCH 0/2] dm mpath: Interface for explicit probing of active paths

[Paolo Bonzini <pbonzini@redhat.com>]

On 5/15/25 12:11, Kevin Wolf wrote:
> The thing that we need to make sure, though, is that the emulated status
> we can expose to the guest is actually good enough. That Paolo said that
> the problem with reservation conflicts was mostly because -EBADE wasn't
> a thing yet gives me some hope that at least this wouldn't be a problem
> any more today.

Hmm I'm not sure about that anymore...  I was confused because some of 
the refactoring of block errors was done in 2017, which is around the 
same time I was working on persistent reservations in QEMU.

However, EBADE handling dates back to 2011 (commit 63583cca745f, "[SCSI] 
Add detailed SCSI I/O errors", 2011-02-12) and yet the Windows tests for 
PR were failing before QEMU switched to SG_IO for reads and writes.  I 
guess I have to try reverting that and retest, though.

Paolo