diff options
Diffstat (limited to 'qemu-options.hx')
| -rw-r--r-- | qemu-options.hx | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/qemu-options.hx b/qemu-options.hx index 2aae19b0f9..af850923f7 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -4477,7 +4477,7 @@ Dump the network traffic on netdev @var{dev} to the file specified by The file format is libpcap, so it can be analyzed with tools such as tcpdump or Wireshark. -@item -object colo-compare,id=@var{id},primary_in=@var{chardevid},secondary_in=@var{chardevid},outdev=@var{chardevid},iothread=@var{id}[,vnet_hdr_support] +@item -object colo-compare,id=@var{id},primary_in=@var{chardevid},secondary_in=@var{chardevid},outdev=@var{chardevid},iothread=@var{id}[,vnet_hdr_support][,notify_dev=@var{id}] Colo-compare gets packet from primary_in@var{chardevid} and secondary_in@var{chardevid}, than compare primary packet with secondary packet. If the packets are same, we will output primary @@ -4486,11 +4486,15 @@ do checkpoint and send primary packet to outdev@var{chardevid}. In order to improve efficiency, we need to put the task of comparison in another thread. If it has the vnet_hdr_support flag, colo compare will send/recv packet with vnet_hdr_len. +If you want to use Xen COLO, will need the notify_dev to notify Xen +colo-frame to do checkpoint. we must use it with the help of filter-mirror and filter-redirector. @example +KVM COLO + primary: -netdev tap,id=hn0,vhost=off,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown -device e1000,id=e0,netdev=hn0,mac=52:a4:00:12:78:66 @@ -4514,6 +4518,33 @@ secondary: -object filter-redirector,id=f1,netdev=hn0,queue=tx,indev=red0 -object filter-redirector,id=f2,netdev=hn0,queue=rx,outdev=red1 + +Xen COLO + +primary: +-netdev tap,id=hn0,vhost=off,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown +-device e1000,id=e0,netdev=hn0,mac=52:a4:00:12:78:66 +-chardev socket,id=mirror0,host=3.3.3.3,port=9003,server,nowait +-chardev socket,id=compare1,host=3.3.3.3,port=9004,server,nowait +-chardev socket,id=compare0,host=3.3.3.3,port=9001,server,nowait +-chardev socket,id=compare0-0,host=3.3.3.3,port=9001 +-chardev socket,id=compare_out,host=3.3.3.3,port=9005,server,nowait +-chardev socket,id=compare_out0,host=3.3.3.3,port=9005 +-chardev socket,id=notify_way,host=3.3.3.3,port=9009,server,nowait +-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,notify_dev=nofity_way,iothread=iothread1 + +secondary: +-netdev tap,id=hn0,vhost=off,script=/etc/qemu-ifup,down script=/etc/qemu-ifdown +-device e1000,netdev=hn0,mac=52:a4:00:12:78:66 +-chardev socket,id=red0,host=3.3.3.3,port=9003 +-chardev socket,id=red1,host=3.3.3.3,port=9004 +-object filter-redirector,id=f1,netdev=hn0,queue=tx,indev=red0 +-object filter-redirector,id=f2,netdev=hn0,queue=rx,outdev=red1 + @end example If you want to know the detail of above command line, you can read |