While resolving a qemu NBD client error reported by nbdkit, I found another client oddity by code inspection, in relation to what the protocol states about simple errors to NBD_CMD_BLOCK_STATUS vs. what our client enforced. It turns out that nbdkit didn't actually provoke this case, but since I was able to provoke it with a 2-line patch to qemu-nbd, it's worth fixing. And Vladimir's insistence that I describe the fix accurately means that I actually found two separate things to fix.
Since v1: split into two patches better documentation of what is being changed Eric Blake (2): nbd: Don't lose server's error to NBD_CMD_BLOCK_STATUS nbd: Permit simple error to NBD_CMD_BLOCK_STATUS block/nbd-client.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) -- 2.20.1
