On 20/01/2016 08:12, Denis V. Lunev wrote: > blk_invalidate_cache() can call qcow2_invalidate_cache which performs > IO inside. > > Signed-off-by: Denis V. Lunev <d...@openvz.org> > CC: Kevin Wolf <kw...@redhat.com> > CC: Paolo Bonzini <pbonz...@redhat.com> > --- > nbd.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/nbd.c b/nbd.c > index b3d9654..b271db5 100644 > --- a/nbd.c > +++ b/nbd.c > @@ -1080,7 +1080,9 @@ NBDExport *nbd_export_new(BlockBackend *blk, off_t > dev_offset, off_t size, > * that BDRV_O_INCOMING is cleared and the image is ready for write > * access since the export could be available before migration handover. > */ > + aio_context_acquire(exp->ctx); > blk_invalidate_cache(blk, NULL); > + aio_context_release(exp->ctx); > return exp; > > fail: >
Queuing this one myself. Paolo