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Proxmox 3.0 - Slow VM Migration

Hello,

I have a two Node Cluster setup and trying to test offline migration of a 20G KVM VM but it seems the migration is taking about 30 mins to complete whether I create the VM with a RAW or a QCOW2 image. I tried googling and checking thru the mailing list and the forum but I haven't come up with anything concrete so hence my post here.

The VM is using Virtio for both Hard Disk and Network. It was created with QCOW2 and cache=writeback, 4 vCPU Cores and 2GB Ram.

Code:

Migration task log

Jun 24 22:44:54 starting migration of VM 100 to node 'NodeA'
Jun 24 22:44:54 copying disk images
vm-100-disk-1.qcow2

rsync status: 32768  0%    0.00kB/s    0:00:00 
rsync status: 224231424  1%  11.14MB/s    0:31:04 
rsync status: 435585024  2%  11.16MB/s    0:30:41 
rsync status: 646840320  3%  11.16MB/s    0:30:23 
rsync status: 869203968  4%  11.14MB/s    0:30:06 
rsync status: 1079705600  5%  11.12MB/s    0:29:51
.
.
.
rsync status: 20406534144  95%  11.18MB/s    0:01:33 
rsync status: 20629192704  96%  11.14MB/s    0:01:14 
rsync status: 20840218624  97%  11.13MB/s    0:00:55 
rsync status: 21051637760  98%  11.18MB/s    0:00:37 
rsync status: 21274722304  99%  11.17MB/s    0:00:17 
rsync status: 21478375424 100%  11.15MB/s    0:30:36 (xfer#1, to-check=0/1)

sent 21480997377 bytes  received 31 bytes  11690338.73 bytes/sec
total size is 21478375424  speedup is 1.00
Jun 24 23:15:49 migration finished successfuly (duration 00:30:55)
TASK OK

Each Node has the following Hardware specs:

Intel(R) Xeon(R) CPU E3-1240 V2 @ 3.40GHz
16GB Ram
2 x 1TB Drive RAID 0
Raid Card - 3ware Inc 9650SE SATA-II
2 x 1Gb/s NICs (but only 100 Mb/s uplink)

Both Nodes are the same VLAN.

Code:

# pveperf

CPU BOGOMIPS:      54400.16
REGEX/SECOND:      1537301
HD SIZE:          94.49 GB (/dev/mapper/pve-root)
BUFFERED READS:    185.44 MB/sec
AVERAGE SEEK TIME: 8.19 ms
FSYNCS/SECOND:    40.49
DNS EXT:          67.50 ms
DNS INT:          107.50 ms (mycluster.com)

Code:

root@nodea:~# dd if=/dev/zero of=/tmp/output.img bs=8k count=256k
262144+0 records in
262144+0 records out
2147483648 bytes (2.1 GB) copied, 2.53249 s, 848 MB/s

I tried to put as much information as possible but let me know if I missed anything.

Thank you all in advance.

Samwayne

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