[Qemu-devel] [Bug 1574572] Re: config 20 sriov direct bond ports，vm create failed.

[Michael liu]

http://patchwork.ozlabs.org/patch/293580/
In this patch，when KVM_CAP_NR_MEMSLOTS is  implemented ，Convert the static 
slots array to
be dynamically allocated, supporting more slots when available.
But how many slots we  can use，the number is limited by the host kernel？Do any 
one has the same problem？

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https://bugs.launchpad.net/bugs/1574572

Title:
  config 20 sriov direct bond ports，vm create failed.

Status in QEMU:
  New

Bug description:
  nova log：

   2016-04-08 09:57:48.640 5057 INFO nova.compute.manager [req-
  4e1b4d70-62b6-4158-8413-3c9f226fd13b - - - - -] report
  alarm_instance_shutoff success

  2016-04-08 09:57:48.712 5057 INFO nova.compute.manager [req-
  4e1b4d70-62b6-4158-8413-3c9f226fd13b - - - - -] [instance: d860169c-
  0dac-448f-a644-01a9b200cebe] During _sync_instance_power_state the DB
  power_state (1) does not match the vm_power_state from the hypervisor
  (4). Updating power_state in the DB to match the hypervisor.

  2016-04-08 09:57:48.791 5057 WARNING nova.compute.manager [req-
  4e1b4d70-62b6-4158-8413-3c9f226fd13b - - - - -] [instance: d860169c-
  0dac-448f-a644-01a9b200cebe] Instance shutdown by itself. Calling the
  heal_instance_state. Current vm_state: active, current task_state:
  None, original DB power_state: 1, current VM power_state: 4

  2016-04-08 09:57:48.892 5057 INFO nova.compute.manager [req-
  4e1b4d70-62b6-4158-8413-3c9f226fd13b - - - - -]
  alarm_notice_heal_event result:1,host_name:tfg120,instance_id
  :d860169c-0dac-
  
448f-a644-01a9b200cebe,instance_name:vfnicdirect,vm_state:active,power_state:shutdown,action:start

  2016-04-08 09:57:48.997 5057 INFO nova.compute.manager [req-
  4e1b4d70-62b6-4158-8413-3c9f226fd13b - - - - -]
  Refresh_instance_block_device_info:False

  2016-04-08 09:57:48.998 5057 INFO nova.compute.manager [req-
  4e1b4d70-62b6-4158-8413-3c9f226fd13b - - - - -] [instance: d860169c-
  0dac-448f-a644-01a9b200cebe] Rebooting instance

  2016-04-08 09:57:49.373 5057 WARNING nova.compute.manager [req-
  4e1b4d70-62b6-4158-8413-3c9f226fd13b - - - - -] [instance: d860169c-
  0dac-448f-a644-01a9b200cebe] trying to reboot a non-running instance:
  (state: 4 expected: 1)

  2016-04-08 09:57:49.479 5057 INFO nova.virt.libvirt.driver [-]
  [instance: d860169c-0dac-448f-a644-01a9b200cebe] Instance destroyed
  successfully.

  
  libvirtd  log：

  2016-04-08 02:05:05.785+0000: 4778: info : qemuDomainDestroyFlags:2227
  : Log: VM: name= instance-000000b8

  2016-04-08 02:05:16.156+0000: 4771: info :
  qemuDomainDefineXMLFlags:7576 : Creating domain 'instance-000000b8'

  2016-04-08 02:05:16.158+0000: 4773: info :
  qemuDomainCreateWithFlags:7448 : Log: VM: name= instance-000000b8

  2016-04-08 02:05:16.158+0000: 4773: info : qemuProcessStart:4412 :
  vm=0x7f19482fdb30 name=instance-000000b8 id=-1 asyncJob=0
  migrateFrom=<null> stdin_fd=-1 stdin_path=<null> snapshot=(nil) vmop=0
  flags=0x1

  2016-04-08 02:05:16.169+0000: 4773: info :
  virNetDevReplaceNetConfig:2541 : Replace Net Config of linkdev
  enp132s0f0, vf 28, macaddress 00:d1:d4:00:05:03, vlanid 1250, stateDir
  /var/run/libvirt/hostdevmgr

  2016-04-08 02:05:16.169+0000: 4773: info :
  virNetDevReplaceNetConfig:2566 : Replace  Vf Config of enp132s0f0, vf
  28, vlanid 1250, stateDir /var/run/libvirt/hostdevmgr

  2016-04-08 02:05:16.169+0000: 4773: info :
  virNetDevReplaceVfConfig:2390 : pflinkdev enp132s0f0, vf 28,vlanid
  1250

  2016-04-08 02:05:16.178+0000: 4773: info :
  virNetDevReplaceVfConfig:2428 : save oldmac 00:d1:d4:00:05:03,
  oldvlanid 1250

  2016-04-08 02:05:16.178+0000: 4773: info : virNetDevSetVfConfig:2196 :
  ifname enp132s0f0,ifindex -1,vf 28,macaddress 00:d1:d4:00:05:03,
  vlanid 1250

  
  qemu log：

  kvm_alloc_slot: no free slot available

  2016-04-08 06:21:04.793+0000: shutting down

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