TOPIC:

Hi We use your product on an XCP plateforme and its working like a charm.

We wanted to move to the last version of XenServer and run some test on a two node poool. Everything works fine till we try disaster recovery tests.

AS soon as we hard power off the slave node, VM disappear from XENCENTER and never got restarted. I check on the pool master, the VM is still running for him on a dead server, even after several minutes watiting for any reactions.

When we restart the failed server, the VM respawn on the dead server and can be reache after a few seconds.

I wonder wether it is a Ha-lizard or a XenServer Problem.
Thanks for the help Joseph

ps: We tryed after HA in the pool was enabled/disabled. We wanted to compare ha-lizard to standard HA in XenServer.

can you make sure that the service is running and ha-lizard is enabled.

Check service
[service ha-lizard status -w]

Check if enabled
[ha-cfg status]

If both are ok - can you post about 1 minute of the log file from the master and your configuration settings.
[ha-cfg log]

Also - are you running an external SAN or local storage managed by ha-lizard?

As requested find the requested informations on
pastebin.com/hhjbtsJV

Our XenServer pool is made of 2 XENSERVER updated to SP1 with latest HA-lizard. We are currently running it on 2 intel i5 3470k with 12Go of ram.

also find enclosed, capture from Xencenter before and after failed host. please notice that we did not activate HA for the pool.

Older versions of HA-Lizard were "more forgiving" when fencing. Newer versions must have the following set in a 2-node pool(mandatory).

For a 2 node pool:
- FENCE_MIN_HOSTS must be set to 2 (your config has 3 - in this case the master would always fail to fence.)
- FENCE_HEURISTICS_IPS must be set to an known good IP (think of this as a form of heartbeat - the surviving node must reach this IP to ensure it has not experienced a network failure)
- FENCE_USE_IP_HEURISTICS should be set to 1

So - assuming a heauristic ip of 192.168.1.1 - try the following:

ha-cfg set FENCE_MIN_HOSTS 2
ha-cfg set FENCE_HEURISTICS_IPS 192.168.1.1
ha-cfg set FENCE_USE_IP_HEURISTICS 1