Hi Zhang Chen，
I follow the https://wiki.qemu.org/Features/COLO, And Vm no crash.
But SVM rebooting constantly after print RESET, PVM normal startup.
Secondary:
{"timestamp": {"seconds": 1521421788, "microseconds": 541058}, "event":
"RESUME"}
{"timestamp": {"seconds": 1521421808, "microseconds": 493484}, "event": "STOP"}
{"timestamp": {"seconds": 1521421808, "microseconds": 686466}, "event":
"RESUME"}
{"timestamp": {"seconds": 1521421808, "microseconds": 696152}, "event":
"RESET", "data": {"guest": true}}
{"timestamp": {"seconds": 1521421808, "microseconds": 740653}, "event":
"RESET", "data": {"guest": true}}
{"timestamp": {"seconds": 1521421818, "microseconds": 742222}, "event": "STOP"}
{"timestamp": {"seconds": 1521421818, "microseconds": 969883}, "event":
"RESUME"}
{"timestamp": {"seconds": 1521421818, "microseconds": 979986}, "event":
"RESET", "data": {"guest": true}}
{"timestamp": {"seconds": 1521421819, "microseconds": 22652}, "event": "RESET",
"data": {"guest": true}}
The command(I run two VM in sample machine):
Primary:
sudo /home/lee/Documents/qemu/x86_64-softmmu/qemu-system-x86_64 -enable-kvm
-boot c -m 2048 -smp 2 -qmp stdio -name primary -cpu qemu64,+kvmclock -device
piix3-usb-uhci -device usb-tablet \
-netdev
tap,id=hn0,vhost=off,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown -device
rtl8139,id=e0,netdev=hn0 \
-chardev socket,id=mirror0,host=192.168.0.33,port=9003,server,nowait \
-chardev socket,id=compare1,host=192.168.0.33,port=9004,server,wait \
-chardev socket,id=compare0,host=192.168.0.33,port=9001,server,nowait \
-chardev socket,id=compare0-0,host=192.168.0.33,port=9001 \
-chardev socket,id=compare_out,host=192.168.0.33,port=9005,server,nowait \
-chardev socket,id=compare_out0,host=192.168.0.33,port=9005 \
-object filter-mirror,id=m0,netdev=hn0,queue=tx,outdev=mirror0 \
-object filter-redirector,netdev=hn0,id=redire0,queue=rx,indev=compare_out \
-object filter-redirector,netdev=hn0,id=redire1,queue=rx,outdev=compare0 \
-object iothread,id=iothread1 \
-object
colo-compare,id=comp0,primary_in=compare0-0,secondary_in=compare1,outdev=compare_out0,iothread=iothread1
\
-drive
if=ide,id=colo-disk0,driver=quorum,read-pattern=fifo,vote-threshold=1,children.0.file.filename=/var/lib/libvirt/images/1.raw,children.0.driver=raw
-S
Secondary:
sudo /home/lee/Documents/qemu/x86_64-softmmu/qemu-system-x86_64 -boot c -m 2048
-smp 2 -qmp stdio -name secondary -enable-kvm -cpu qemu64,+kvmclock \
-device piix3-usb-uhci -device usb-tablet \
-netdev
tap,id=hn0,vhost=off,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown \
-device rtl8139,netdev=hn0 \
-chardev socket,id=red0,host=192.168.0.33,port=9003,reconnect=1 \
-chardev socket,id=red1,host=192.168.0.33,port=9004,reconnect=1 \
-object filter-redirector,id=f1,netdev=hn0,queue=tx,indev=red0 \
-object filter-redirector,id=f2,netdev=hn0,queue=rx,outdev=red1 \
-object filter-rewriter,id=rew0,netdev=hn0,queue=all \
-drive
if=none,id=colo-disk0,file.filename=/var/lib/libvirt/images/2.raw,driver=raw,node-name=node0
\
-drive
if=ide,id=active-disk0,driver=replication,mode=secondary,file.driver=qcow2,top-id=active-disk0,file.file.filename=/mnt/ramfs/active_disk.img,file.backing.driver=qcow2,file.backing.file.filename=/mnt/ramfs/hidden_disk.img,file.backing.backing=colo-disk0
\
-incoming tcp:0:8888
Secondary:
{'execute':'qmp_capabilities'}
{ 'execute': 'nbd-server-start',
'arguments': {'addr': {'type': 'inet', 'data': {'host': '192.168.0.33',
'port': '8889'} } }
}
{'execute': 'nbd-server-add', 'arguments': {'device': 'colo-disk0',
'writable': true } }
{'execute': 'trace-event-set-state', 'arguments': {'name': 'colo*', 'enable':
true} }
Primary:
{'execute':'qmp_capabilities'}
{ 'execute': 'human-monitor-command',
'arguments': {'command-line': 'drive_add -n buddy
driver=replication,mode=primary,file.driver=nbd,file.host=192.168.0.33,file.port=8889,file.export=colo-disk0,node-name=node0'}}
{ 'execute':'x-blockdev-change', 'arguments':{'parent': 'colo-disk0', 'node':
'node0' } }
{ 'execute': 'migrate-set-capabilities',
'arguments': {'capabilities': [ {'capability': 'x-colo', 'state': true
} ] } }
{ 'execute': 'migrate', 'arguments': {'uri': 'tcp:192.168.0.33:8888' } }
Thanks
Suiheng
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You received this bug notification because you are a member of qemu-
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https://bugs.launchpad.net/bugs/1754542
Title:
colo: vm crash with segmentation fault
Status in QEMU:
New
Bug description:
I use Arch Linux x86_64
Zhang Chen's(https://github.com/zhangckid/qemu/tree/qemu-colo-18mar10)
Following document 'COLO-FT.txt',
I test colo feature on my hosts
I run this command
Primary:
sudo /usr/local/bin/qemu-system-x86_64 -enable-kvm -m 2048 -smp 2 -qmp stdio
-name primary \
-device piix3-usb-uhci \
-device usb-tablet -netdev tap,id=hn0,vhost=off \
-device virtio-net-pci,id=net-pci0,netdev=hn0 \
-drive
if=virtio,id=primary-disk0,driver=quorum,read-pattern=fifo,vote-threshold=1,\
children.0.file.filename=/var/lib/libvirt/images/1.raw,\
children.0.driver=raw -S
Secondary:
sudo /usr/local/bin/qemu-system-x86_64 -enable-kvm -m 2048 -smp 2 -qmp stdio
-name secondary \
-device piix3-usb-uhci \
-device usb-tablet -netdev tap,id=hn0,vhost=off \
-device virtio-net-pci,id=net-pci0,netdev=hn0 \
-drive
if=none,id=secondary-disk0,file.filename=/var/lib/libvirt/images/2.raw,driver=raw,node-name=node0
\
-drive if=virtio,id=active-disk0,driver=replication,mode=secondary,\
file.driver=qcow2,top-id=active-disk0,\
file.file.filename=/mnt/ramfs/active_disk.img,\
file.backing.driver=qcow2,\
file.backing.file.filename=/mnt/ramfs/hidden_disk.img,\
file.backing.backing=secondary-disk0 \
-incoming tcp:0:8888
Secondary:
{'execute':'qmp_capabilities'}
{ 'execute': 'nbd-server-start',
'arguments': {'addr': {'type': 'inet', 'data': {'host': '192.168.0.34',
'port': '8889'} } }
}
{'execute': 'nbd-server-add', 'arguments': {'device': 'secondary-disk0',
'writable': true } }
Primary:
{'execute':'qmp_capabilities'}
{ 'execute': 'human-monitor-command',
'arguments': {'command-line': 'drive_add -n buddy
driver=replication,mode=primary,file.driver=nbd,file.host=192.168.0.34,file.port=8889,file.export=secondary-disk0,node-name=nbd_client0'}}
{ 'execute':'x-blockdev-change', 'arguments':{'parent': 'primary-disk0',
'node': 'nbd_client0' } }
{ 'execute': 'migrate-set-capabilities',
'arguments': {'capabilities': [ {'capability': 'x-colo', 'state': true
} ] } }
{ 'execute': 'migrate', 'arguments': {'uri': 'tcp:192.168.0.34:8888' } }
And two VM with cash
Primary:
{"timestamp": {"seconds": 1520763655, "microseconds": 511415}, "event":
"RESUME"}
[1] 329 segmentation fault sudo /usr/local/bin/qemu-system-x86_64 -boot c
-enable-kvm -m 2048 -smp 2 -qm
Secondary:
{"timestamp": {"seconds": 1520763655, "microseconds": 510907}, "event":
"RESUME"}
[1] 367 segmentation fault sudo /usr/local/bin/qemu-system-x86_64 -boot c
-enable-kvm -m 2048 -smp 2 -qm
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