[adding some cc's] On 04/21/2017 02:17 AM, Wouter Verhelst wrote:
> Side note though, while checking my OPT_INFO implementation, I > encountered a problem. I ran your qemu-nbd like so: > > ./qemu-nbd -x foo -D "test image" -t -p 18909 test.img > > and then ran my nbd-client against it several times. At one point, I got > a SIGPIPE, because of: > > qemu-nbd: io/channel.c:306: qio_channel_yield: Assertion > `!ioc->read_coroutine' failed. This may be an issue that we are already aware of on qemu; I also know that Paolo has patches lined up that rework control flow in qemu-nbd to be a bit more efficient in lock handling that may clear it up. But if it's something we haven't seen yet, I appreciate you reporting the test case. > > this was during a debugging session, so there have been a few times where > I hit "k" in gdb, so the client was killed and the socket aborted. I'm > not sure whether that's related, but it could be -- and I thought you'd > want to know this. -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3266 Virtualization: qemu.org | libvirt.org
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