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[Qemu-devel] [Bug 1187529] Re: Devices on PCI bridge stop working when l


From: Thomas Huth
Subject: [Qemu-devel] [Bug 1187529] Re: Devices on PCI bridge stop working when live-migrated
Date: Tue, 20 Feb 2018 13:26:38 -0000

Triaging old bug tickets... can you still reproduce this issue with the
latest version of QEMU? Or could we close this ticket nowadays?


** Changed in: qemu
     Assignee: Don Koch (dkoch-r) => (unassigned)

** Changed in: qemu
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1187529

Title:
  Devices on PCI bridge stop working when live-migrated

Status in QEMU:
  Incomplete

Bug description:
  qemu version: 1.4.50 (0ca5aa4f4c4a8bcc73988dd52a536241d35e5223)
  host: x86_64, Linux 3.6.10 (Fedora 17)
  client: x86_64 Centos 6.3 (doesn't matter, really)

  If a device, e.g. an lsi53c895a, is on a pci-bridge, after migration, the 
device stops working (e.g., commands like "poweroff"
  get an Input/Output error. Fails under either xen or kvm. If "top" was 
running, some cpus go to ~100% wait.

  Sample KVM invocation line:
  qemu-system-x86_64 -machine type=pc,accel=kvm -m 4096 -device 
pci-bridgemsi=on,chassis_nr=1,id=pciBridge1.0,addr=0x11.0 -device 
lsi53c895a,id=sas,bus=pciBridge1.0,addr=0x1.0x0 -drive 
if=none,id=disk0,file=/path/to/disk/image -device 
scsi-disk,bus=sas.0,scsi-id=0,drive=disk0 -vnc 127.0.0.1:0,to=99 -serial pty 
-boot order=cda -smp 4,maxcpus=4 -monitor vc

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