Hi all,
I tried live migration with multifd enabled. The guest on the source side hangs there when it is migrated with the setting multifd-channels = 16. It works well when set multifd-channels as 2,4, 8.
Qemu version: qemu-6.0.50:
Latest commit: commit c313e52e6459de2e9064767083a0c949c476e32b
Qemu command line:
source side:
qemu-system-x86_64 --machine pc,accel=kvm,usb=off,dump-guest-core=off -smp 40 -m 1024 --nographic \
-device pci-bridge,id=pci_bridge1,bus=pci.0,chassis_nr=1 \
-drive file=./CentOS.raw,if=none,id=drive-virtio-disk0,format=raw,cache=none,aio=native \
-device virtio-blk-pci,scsi=off,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=0 \
-serial telnet:localhost:4444,server,nowait
Destination side:
qemu-system-x86_64 --machine pc,accel=kvm,usb=off,dump-guest-core=off -smp 40 -m 1024 --nographic \
-device pci-bridge,id=pci_bridge1,bus=pci.0,chassis_nr=1 \
-drive file=./CentOS.raw,if=none,id=drive-virtio-disk0,format=raw,cache=none,aio=native \
-device virtio-blk-pci,scsi=off,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=0 \
-serial telnet:localhost:4444,server,nowait \
-incoming tcp:
10.43.16.29:4446,server,wait
Setting of migration:
# migrate_set_capability multifd on
# migrate_set_parameter multifd-channels 16
# migrate_set_parameter max-bandwidth 4G
Any ideas?
Thanks
Li