On Thu, 21 Feb 2019 at 04:00, Michael S. Tsirkin <m...@redhat.com> wrote: > > On Mon, Feb 18, 2019 at 06:27:41PM +0800, elohi...@gmail.com wrote: > > From: Xie Yongji <xieyon...@baidu.com> > > > > This patchset is aimed at supporting qemu to reconnect > > vhost-user-blk backend after vhost-user-blk backend crash or > > restart. > > > > The patch 1 introduces two new messages VHOST_USER_GET_INFLIGHT_FD > > and VHOST_USER_SET_INFLIGHT_FD to support transferring shared > > buffer between qemu and backend. > > > > The patch 2 deletes some redundant check in contrib/libvhost-user.c. > > > > The patch 3,4 are the corresponding libvhost-user patches of > > patch 1. Make libvhost-user support VHOST_USER_GET_INFLIGHT_FD > > and VHOST_USER_SET_INFLIGHT_FD. > > > > The patch 5 allows vhost-user-blk to use the two new messages > > to get/set inflight buffer from/to backend. > > > > The patch 6 supports vhost-user-blk to reconnect backend when > > connection closed. > > > > The patch 7 introduces VHOST_USER_PROTOCOL_F_SLAVE_SHMFD > > to vhost-user-blk backend which is used to tell qemu that > > we support reconnecting now. > > > > To use it, we could start qemu with: > > > > qemu-system-x86_64 \ > > -chardev socket,id=char0,path=/path/vhost.socket,reconnect=1, \ > > -device vhost-user-blk-pci,chardev=char0 \ > > > > and start vhost-user-blk backend with: > > > > vhost-user-blk -b /path/file -s /path/vhost.socket > > > > Then we can restart vhost-user-blk at any time during VM running. > > Sorry is elohi...@gmail.com also an address that belongs to > Xie Yongji? >
Yes, that's also my email address. Thanks, Yongji
