ganeti: gnt-instance migrate endless copying memory

Originally reported of Google Code with ID 894.

What software version are you running? Please provide the output of "gnt-
cluster --version", "gnt-cluster version", and "hspace --version".

<b>What distribution are you using?</b>
# gnt-cluster --version
gnt-cluster (ganeti v2.11.3) 2.11.3
# gnt-cluster version
Software version: 2.11.3
Internode protocol: 2110000
Configuration format: 2110000
OS api version: 20
Export interface: 0
VCS version: (ganeti) version v2.11.3
# hspace --version
hspace (ganeti) version v2.11.3
compiled with ghc 7.4
running on linux x86_64
# cat /etc/debian_version
7.6
# apt-cache policy ganeti
ganeti:
  Installed: 2.11.3-2~bpo70+1
  Candidate: 2.11.3-2~bpo70+1
  Package pin: 2.11.3-2~bpo70+1
  Version table:
 *** 2.11.3-2~bpo70+1 990
        100 http://debian.xxxxxxxx.de/debian/ wheezy-backports/main amd64 Packages
        100 /var/lib/dpkg/status
     2.10.5-1~bpo70+1 990
        100 http://debian.xxxxxxxx.de/debian/ wheezy-backports/main amd64 Packages
     2.9.5-1~bpo70+1 990
        100 http://debian.xxxxxxxx.de/debian/ wheezy-backports/main amd64 Packages


<b>What steps will reproduce the problem?</b>
gnt-instance migrate -f vmX


<b>What is the expected output? What do you see instead?</b>
- Tue Jul 22 20:07:41 2014 * memory transfer progress: 600.64 %
- Tue Jul 22 20:07:53 2014 * memory transfer progress: 618.39 % 
+ "Timeout" which cancels the migration if the memory transfer progress reaches a certain limit


<b>Please provide any additional information below.</b>
The VM has got a gaming server running which seams to be modifying to much memory.

Originally added on 2014-07-22 18:15:38 +0000 UTC.

About this issue

Original URL
State: closed
Created 7 years ago
Reactions: 1
Comments: 18 (4 by maintainers)

Most upvoted comments

postcopy migration is implemetet in commits commits 1aecc0c275e530d2d473b3371600134bdac5362d and 041ed56d979cb4a2e4b67d1e650a694a08b5cc3f in the attic/master branch, but never released:

it checks weather postcopy migration capability is enabled as a hypervisor parameter and if so, after two cycles of memory transfer (200%) switches to postcopy migration.

saschalucas on Jun 19, 2019

As this was the first thing I found in google, you can abort migrations with this command:

echo "migrate_cancel" |  /usr/bin/socat STDIO UNIX-CONNECT:/var/run/ganeti/kvm-hypervisor/ctrl/<vm-name>.monitor

see http://www.linux-kvm.org/page/Migration

Originally added on 2016-07-22 09:46:56 +0000 UTC.

Ganeti-Issues-Migrator on Jun 25, 2017