Re: [Qemu-devel] 2.1 unexpected stop after exporting blockdev via nbd server

[Stefan Hajnoczi]

On Thu, Dec 18, 2014 at 07:38:59PM +0400, Andrey Korolyov wrote:
> 2.1-stable is currently crashing with the
> 
> Co-routine re-entered recursively
> 2014-12-16 15:06:23.578+0000: shutting down
> 
> after execution of (for example) following when using virtio-dp as a
> disk backend:
> 
> '{ "execute": "nbd-server-start", "arguments": { "addr": { "type":
> "inet", "data": { "host": "10.6.0.1", "port": "3333" } } } }'
> '{ "execute": "nbd-server-add", "arguments": {"device":
> "drive-virtio-disk0","writable": false } }'

Hi,
You need patches from Max Reitz that make the run-time NBD server
support dataplane:
f214928 nbd: Follow the BDS' AIO context
3338442 block: Add AIO context notifiers
958c717 nbd: Drop nbd_can_read()

Please try QEMU v2.2.0 or qemu.git.

Stefan

pgpD5ED2cIeAT.pgp
Description: PGP signature