Red Hat Bugzilla – Bug 1459801
nbd/server.c:nbd_receive_request():L706: read failed when do migration_cancel
Last modified: 2017-08-01 04:31:04 EDT
Description of problem: Version-Release number of selected component (if applicable): qemu-kvm-rhev-2.9.0-8.el7.x86_64 How reproducible: 2/2 Steps to Reproduce: 1. Server: # qemu-nbd -f qcow2 rhel74-64-virtio.qcow2 -p 9000 -t --share=2 2. Client: Boot up guest cmd: /usr/libexec/qemu-kvm \ -S \ -name 'avocado-vt-vm1' \ -sandbox off \ -machine pc \ -nodefaults \ -vga cirrus \ -chardev socket,id=qmp_id_qmpmonitor1,path=/var/tmp/avocado_dGGu2S/monitor-qmpmonitor1-20170608-041234-CUqSlEp0,server,nowait \ -mon chardev=qmp_id_qmpmonitor1,mode=control \ -chardev socket,id=qmp_id_catch_monitor,path=/var/tmp/avocado_dGGu2S/monitor-catch_monitor-20170608-041234-CUqSlEp0,server,nowait \ -mon chardev=qmp_id_catch_monitor,mode=control \ -device pvpanic,ioport=0x505,id=idHoC3M4 \ -chardev socket,id=serial_id_serial0,path=/var/tmp/avocado_dGGu2S/serial-serial0-20170608-041234-CUqSlEp0,server,nowait \ -device isa-serial,chardev=serial_id_serial0 \ -chardev socket,id=seabioslog_id_20170608-041234-CUqSlEp0,path=/var/tmp/avocado_dGGu2S/seabios-20170608-041234-CUqSlEp0,server,nowait \ -device isa-debugcon,chardev=seabioslog_id_20170608-041234-CUqSlEp0,iobase=0x402 \ -device ich9-usb-ehci1,id=usb1,addr=0x1d.7,multifunction=on,bus=pci.0 \ -device ich9-usb-uhci1,id=usb1.0,multifunction=on,masterbus=usb1.0,addr=0x1d.0,firstport=0,bus=pci.0 \ -device ich9-usb-uhci2,id=usb1.1,multifunction=on,masterbus=usb1.0,addr=0x1d.2,firstport=2,bus=pci.0 \ -device ich9-usb-uhci3,id=usb1.2,multifunction=on,masterbus=usb1.0,addr=0x1d.4,firstport=4,bus=pci.0 \ -drive id=drive_image1,if=none,snapshot=off,aio=native,cache=none,format=raw,file=nbd:10.73.196.131:9000 \ -device virtio-blk-pci,id=image1,drive=drive_image1,bootindex=0,bus=pci.0,addr=0x3 \ -device virtio-net-pci,mac=9a:15:16:17:18:19,id=idmk5xPz,vectors=4,netdev=iddxJKCe,bus=pci.0,addr=0x4 \ -netdev tap,id=iddxJKCe,vhost=on,vhostfd=37,fd=36 \ -m 4096 \ -smp 4,cores=2,threads=1,sockets=2 \ -cpu 'Westmere',+kvm_pv_unhalt \ -device usb-tablet,id=usb-tablet1,bus=usb1.0,port=1 \ -vnc :2 \ -rtc base=utc,clock=host,driftfix=slew \ -boot order=cdn,once=c,menu=off,strict=off \ -enable-kvm \ -incoming tcp:0:5200 3. Do live migration {'execute': 'migrate', 'arguments': {'uri': 'tcp:localhost:5200', 'blk': False, 'inc': False}, 'id': 'Ig1TYidk'} Actual results: nbd/server.c:nbd_receive_request():L706: read failed error show in server guest can be migrated successfully Expected results: Additional info:
the error happen before the migration operation. boot up src image and boot up dst image, then the error show
I can reproduce with qemu-kvm-rhev-2.8.0-6.el7.x86_64 do migration cancel in src guest: src: (qemu) migrate -d tcp:0:5200 (qemu) migrate_cancel result: dst guest: (qemu) qemu-kvm: Unknown combination of migration flags: 0 qemu-kvm: error while loading state section id 3(ram) qemu-kvm: load of migration failed: Invalid argument server: # qemu-nbd -f qcow2 rhel74-64-virtio-scsi.qcow2 --share=4 -t -p 9000 nbd/server.c:nbd_receive_request():L710: read failed
not the same as Bug 1458725, as it just happen when do migrate_cancel. migration canbe do successfully if didn't cancel it.