Bug 801747

Description of problem:

After a new installation all pings ok. 
rhevh02 are SPM.

So i have follow testing:
- install a virtual machine (testvm01 (Win2008r2))
- i have this machine a lot times life migrated between rhevh01 and rhevh02 (all ok) 
- i have maintanance rhevh01 Host, the virtual machine migrate to rhevh02.
- than i have restart rhevh01 from the admin console (directly on Server).
- after restart i confirmed (with checkbox) host has been restarted.
- than i activated host rhevh01
(display to vm ok and virtual machine on rhevh01 ok too)
- at now i have make that same with rhevh02
(display to vm ok and virtual machine on rhevh02 ok too)
- than with rhevh01, ...
but here i become, whan i make this host to maintenance follow errors on the login screen:

end_nequest: I/O error, dev dm-10, sector 0
end_nequest: I/O error, dev dm-10, sector 0
end_nequest: I/O error, dev dm-10, sector 8
end_nequest: I/O error, dev dm-10, sector 128
end_nequest: I/O error, dev dm-10, sector 0
end_nequest: I/O error, dev dm-10, sector 0
end_nequest: I/O error, dev dm-10, sector 4096
end_nequest: I/O error, dev dm-10, sector 0
end_nequest: I/O error, dev dm-10, sector 0
....

whan i now restart rhev01, so the rhevh02 contening from new.

- at now i bring rhevh02 to maintanance and i become follow errors:

"Migration failed due to Error: Could not connect to peer host (VM: testvm01, Source Host: rhevh02.*.*.de). Trying to migrate to another Host."

"VM migration failed due to Error: Could not connect to peer host while Host is in 'preparing for maintenance' state.
  Consider manual intervention: stopping/migrating Vms as Host's state will not
  turn to maintenance while VMs are still running on it.(VM: testvm01, Source Host: rhevh02.*.*.de)."

"Invalid status on Data Center Default. Setting status to Non-Responsive."

"Storage Pool Manager runs on Host rhevh01.*.*.de (Address: 192.*.*.*)."

Than contening rhevh01 from new with folloow error:

"Invalid status on Data Center Default. Setting Data Center status to Non-Responsive (On host rhevh01.*.*.de, Error: done)."

The server rhevh02 have only the status "Preparing for Maintanance" and the virtual machine don't migrate. But i can connecting to the virtual machine and the virtual machine works.

The ping from rhevh02 works to. But he dont change the status.

- at now i reboot the rhevh02 manual from admin console.

Than change the status to 

"Host rhevh02.*.*.de is non-responsive."

than have rhev automaticaly rebooting (iDrac) from now the host rhevh02. Than was this machine down with follow error:

"Power Management test failed for Host rhevh02.*.*.de.Unable to connect/login to fencing device"

After that the host rhevh02 started.

But the problem is, that the server don't go to a up status. The status was non response.

Than i go to power management and click test (was succesful) and than ok, but the server don't go up.

The ping to the rhevm server work, but not the others pings.

I don't know if the problems come from idrac or if the problem comes between the SPM changing.

a day after that the non responce status of rhevh02 was not gone, so i have change the status to maintanance and shutdown the server over the admin console.

Than i have remove the power cables and wait 3 seconds, than i have started the server and after starting i confirmed (with checkbox) that the host has been manual fencing.

Than i have activate this. All pings are ok.
Than i have life migrated the machine to rhevh02 and all pings ok too, but i become the display failures. (display.jpg).

Version-Release number of selected component (if applicable):
rhevh-6.2-20120209.0.iso
Red Hat Enterprise Virtualization Manager:
Version 3.0.2_0001-2.el6 

How reproducible:
tha same ^^

Steps to Reproduce:
1. SAN -> Install Open-E with vds 1.0 (str+w on console): http://documents.open-e.com/Open-E_DSS_V6_Synchronous_Volume_Replication_with_Failover_over_a_LAN_with_unicast.pdf

2.Map the scst or a iet iscsi target to rhev

3.Make the same what is in the description on a Dell R415.
  
Actual results:
The ISCSI Storage make problems of changing the SPM.

Additional info:
I have make a case on redhat "Case 00590201 with the name RHEV 3 Network".
There i have all logs "sosreport-LogCollector-*-20120302083716-36aa.tar.xz" and the image "display.jpg".


I don't know how components can make this problems.