On Wed, Aug 28, 2019 at 07:53:26PM +0530, Sukrit Bhatnagar wrote: > This series enables the migration of various GIDs used by the device. > This is in addition to the successful migration of PCI and MSIX states > as well as various DMA addresses and ring page information. > > We have a setup having two hosts and two VMs running atop them. > Migrations are performed over the local network. > > We also have performed various ping-pong tests (ibv_rc_pingpong) in the > guest(s) after adding GID migration support and this is the current status: > > - ping-pong to localhost succeeds, when performed before starting the > migration and after the completion of migration. > - ping-pong to a peer succeeds, both before and after migration as above, > provided that both VMs are running on/migrated to the same host. > So, if two VMs were started on two different hosts, and one of them > was migrated to the other host, the ping-pong was successful.
This limitation looks to me like wrongly configured network. This patch-set should enable any migration. After our last meeting, please confirm. In addition, i don't see why non-VM peer (i.e. Bare-metal) is not supported. Can you run a test and update with the results? > Similarly, if two VMs are migrated to the same host, then after migration, > > the ping-pong was successful. > - ping-pong to a peer on the remote host is not working as of now. > > Our next goal is to achieve successful migration with live traffic. > > This is the same as the RFC v3 series posted earlier: > https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg04752.html > https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg04753.html > https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg04754.html > > > Sukrit Bhatnagar (2): > hw/pvrdma: make DSR mapping idempotent in load_dsr() > hw/pvrdma: add live migration support > > hw/rdma/vmw/pvrdma_main.c | 94 +++++++++++++++++++++++++++++++++++---- > 1 file changed, 86 insertions(+), 8 deletions(-) > > -- > 2.21.0 > >
