[Qemu-devel] [Bug 1773753] Re: virsh managed save fails with qemu version v2.12.0-813-g5a5c383b13-dirty on powerpc

[Satheesh Rajendran]

followed by further attempts saves the domains as reported but issue
still same.

#virsh managedsave avocado-vt-vm1

Domain avocado-vt-vm1 state saved by libvirt
# virsh start avocado-vt-vm1 ----hung


# virsh list --all
 Id    Name                           State
----------------------------------------------------
 98    avocado-vt-vm1                 paused

I tried restarting libvirt, after which guest goes to shutoff state,
with reason as crash in the qemu log


# service libvirtd restart
Redirecting to /bin/systemctl restart libvirtd.service

# virsh list --all
 Id    Name                           State
----------------------------------------------------
 -     avocado-vt-vm1                 shut off


2018-05-28 12:59:46.748+0000: starting up libvirt version: 4.4.0, package: 
1.fc28 (Unknown, 2018-05-28-03:15:39, 9.40.192.86), qemu version: 
2.12.50v2.12.0-813-g5a5c383b13-dirty, kernel: 4.17.0-rc5-00069-g3acf4e395260, 
hostname: 9.40.192.86
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin 
QEMU_AUDIO_DRV=none /usr/share/avocado-plugins-vt/bin/qemu -name 
guest=avocado-vt-vm1,debug-threads=on -S -object 
secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-97-avocado-vt-vm1/master-key.aes
 -machine pseries-2.13,accel=kvm,usb=off,dump-guest-core=off -m 1024 -realtime 
mlock=off -smp 2,maxcpus=4,sockets=4,cores=1,threads=1 -uuid 
ba3012d5-3244-47d9-bedc-0b60821f7cd1 -display none -no-user-config -nodefaults 
-chardev 
socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-97-avocado-vt-vm1/monitor.sock,server,nowait
 -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown 
-boot strict=on -kernel /home/kvmci/linux/vmlinux -append 'root=/dev/sda2 rw 
console=tty0 console=ttyS0,115200 init=/sbin/init initcall_debug' -device 
qemu-xhci,id=usb,bus=pci.0,addr=0x3 -device 
virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x2 -device 
virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -drive 
file=/var/lib/avocado/data/avocado-vt/images/jeos-27-ppc64le.qcow2,format=qcow2,if=none,id=drive-scsi0-0-0-0
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=1
 -netdev tap,fd=30,id=hostnet0,vhost=on,vhostfd=32 -device 
virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:3d:3e:3f,bus=pci.0,addr=0x1 
-chardev pty,id=charserial0 -device 
spapr-vty,chardev=charserial0,id=serial0,reg=0x30000000 -chardev 
socket,id=charchannel0,path=/var/lib/libvirt/qemu/avocado-vt-vm1-guest.agent,server,nowait
 -device 
virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.qemu.guest_agent.0
 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 -sandbox off -msg 
timestamp=on
2018-05-28T12:59:46.826738Z qemu: -chardev pty,id=charserial0: char device 
redirected to /dev/pts/3 (label charserial0)
2018-05-28 13:00:52.948+0000: shutting down, reason=saved

2018-05-28T13:00:52.950802Z qemu: terminating on signal 15 from pid 41456 
(/usr/sbin/libvirtd)
2018-05-28 13:01:00.467+0000: starting up libvirt version: 4.4.0, package: 
1.fc28 (Unknown, 2018-05-28-03:15:39, 9.40.192.86), qemu version: 
2.12.50v2.12.0-813-g5a5c383b13-dirty, kernel: 4.17.0-rc5-00069-g3acf4e395260, 
hostname: 9.40.192.86
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin 
QEMU_AUDIO_DRV=none /usr/share/avocado-plugins-vt/bin/qemu -name 
guest=avocado-vt-vm1,debug-threads=on -S -object 
secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-98-avocado-vt-vm1/master-key.aes
 -machine pseries-2.13,accel=kvm,usb=off,dump-guest-core=off -m 1024 -realtime 
mlock=off -smp 2,maxcpus=4,sockets=4,cores=1,threads=1 -uuid 
ba3012d5-3244-47d9-bedc-0b60821f7cd1 -display none -no-user-config -nodefaults 
-chardev 
socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-98-avocado-vt-vm1/monitor.sock,server,nowait
 -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown 
-boot strict=on -kernel /home/kvmci/linux/vmlinux -append 'root=/dev/sda2 rw 
console=tty0 console=ttyS0,115200 init=/sbin/init initcall_debug' -device 
qemu-xhci,id=usb,bus=pci.0,addr=0x3 -device 
virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x2 -device 
virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -drive 
file=/var/lib/avocado/data/avocado-vt/images/jeos-27-ppc64le.qcow2,format=qcow2,if=none,id=drive-scsi0-0-0-0
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=1
 -netdev tap,fd=31,id=hostnet0,vhost=on,vhostfd=33 -device 
virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:3d:3e:3f,bus=pci.0,addr=0x1 
-chardev pty,id=charserial0 -device 
spapr-vty,chardev=charserial0,id=serial0,reg=0x30000000 -chardev 
socket,id=charchannel0,path=/var/lib/libvirt/qemu/avocado-vt-vm1-guest.agent,server,nowait
 -device 
virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.qemu.guest_agent.0
 -incoming defer -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 
-sandbox off -msg timestamp=on
2018-05-28T13:01:00.546872Z qemu: -chardev pty,id=charserial0: char device 
redirected to /dev/pts/3 (label charserial0)
2018-05-28 13:02:56.434+0000: shutting down, reason=crashed      <============

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https://bugs.launchpad.net/bugs/1773753

Title:
  virsh managed save fails with qemu version
  v2.12.0-813-g5a5c383b13-dirty on powerpc

Status in QEMU:
  New

Bug description:
  Host Env:
  IBM Power8 with Fedora28 base with compiled upstream kernel, qemu, libvirt.

  Host Kernel: 4.17.0-rc5-00069-g3acf4e395260

  qemu-kvm(5a5c383b1373aeb6c87a0d6060f6c3dc7c53082b):
  v2.12.0-813-g5a5c383b13-dirty

  libvirt(4804a4db33a37f828d033733bc47f6eff5d262c3):

  Guest Kernel: 4.17.0-rc7

  Steps to recreate:
  Define a guest attached with above setup and start.
  # virsh start avocado-vt-vm1

  guest console;...
  # uname -r
  4.17.0-rc7
  address@hidden ~]# lscpu
  Architecture:        ppc64le
  Byte Order:          Little Endian
  CPU(s):              3
  On-line CPU(s) list: 0-2
  Thread(s) per core:  1
  Core(s) per socket:  1
  Socket(s):           3
  NUMA node(s):        1
  Model:               2.1 (pvr 004b 0201)
  Model name:          POWER8 (architected), altivec supported
  Hypervisor vendor:   KVM
  Virtualization type: para
  L1d cache:           64K
  L1i cache:           32K
  NUMA node0 CPU(s):   0-2

  
  # virsh managedsave avocado-vt-vm1 

  Domain avocado-vt-vm1 state saved by libvirt

  # virsh list
   Id    Name                           State
  ----------------------------------------------------

  # virsh start avocado-vt-vm1 ----Hangs forever and vm state goes to
  paused.

  
  # virsh list
   Id    Name                           State
  ----------------------------------------------------
   87    avocado-vt-vm1                 paused

  
  P:S:- with same above setup, just changing the qemu-kvm comes bydefault with 
F28 works fine.

  /usr/bin/qemu-kvm --version
  QEMU emulator version 2.11.1(qemu-2.11.1-2.fc28)

  Summary: with above other setup.
  machine type pseries-2.12 and qemu-2.11.1-2.fc28 -Works fine.

  machine type pseries-2.12/pseries-2.13 and qemu
  5a5c383b1373aeb6c87a0d6060f6c3dc7c53082b - Does not work.

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