[Libguestfs] [libnbd PATCH 0/2] fix hangs against nbdkit 1.2

[Eric Blake]

On 3/30/20 2:59 PM, Eric Blake wrote:
> nbdkit 1.2 as a server waits for read() to see EOF, even after the
> client has sent NBD_CMD_DISC.  That was fixed in mbdkit 1.4; and most
> modern NBD servers are smarter than this (they close() the write end
> of their traffic soon after NBD_CMD_DISC).  But it's easy enough to
> revert nbdkit commit c70616f8 to get back to a server with the same
> behavior as the older nbdkit, at which point both 'cd /path/to/libnbd
> && make check PATH=/path/to/nbdkit' 

Making the obvious correction:
cd /path/to/libnbd && make check PATH=/path/to/nbdkit:$PATH

> and 'cd /path/to/nbdkit &&
> /path/to/libnbd/run make check' will hang without this series.
> 
> In short, this series is restoring the shutdown(SHUT_WR) call that got
> lost from plugins/nbd/nbd.c when nbdkit switched to libnbd in commit
> ab7760fc.


-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
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