SBC-3 4.15.3 Write caching says:

"If processing a write command results in logical block data in cache
that is different from the logical block data on the medium, then the
device server shall retain that logical block data in cache until a
write medium operation is performed using that logical block data."

Does "is performed" mean "completes successfully" or just "completes"?

If "is performed" just means "completes", maybe with an error, the
application would have to resubmit write requests and then try to flush
the write cache again.

I'm not aware of applications that keep acknowledged write data around
until the cache flush completion in order to retry writes.

Can anyone clarify the SBC spec on this point?

Thanks,
Stefan