[Xen-users] iscsi conn error: Xen related?

[Fred Blaise <fred.blaise@xxxxxxxxxxx>]

Hello all,

I got some severe iscsi connection loss on my dom0 (Gentoo 
2.6.20-xen-r6, xen 3.1.1). Happening several times a day.
open-iscsi version is 2.0.865.12. Target iscsi is the open-e DSS product.

Here is a snip of my messages log file:
May  5 16:52:50 ying connection226:0: iscsi: detected conn error (1011)
May  5 16:52:51 ying iscsid: connect failed (111)
May  5 16:52:51 ying iscsid: Kernel reported iSCSI connection 226:0 
error (1011) state (3)
May  5 16:52:53 ying connection215:0: iscsi: detected conn error (1011)
May  5 16:52:53 ying iscsid: connect failed (111)
May  5 16:52:53 ying iscsid: connect failed (111)
May  5 16:52:53 ying iscsid: connect failed (111)
May  5 16:52:53 ying iscsid: connect failed (111)
[...]

and sometimes:
May  5 16:53:11 ying iscsid: connection227:0 is operational after 
recovery (6 attempts)
May  5 16:53:11 ying iscsid: connection221:0 is operational after 
recovery (6 attempts)
May  5 16:53:12 ying iscsid: connection214:0 is operational after 
recovery (9 attempts)
Usually, this means loss of my Windows HVM machines.. paravirtualized 
machines seem to handle that ok, oddly (qemu?).
I have read that this could be due to network state change/asymetric 
routing.. but dunno really in my case. I have 4 network interfaces (2 
dualport cards, Intel PRO/1000 MT):
- 1 is dedicated to storage, with jumbo frames enabled.
- 1 for admin tasks (web interface, ssh)
- 2 for various vlans used

Anyone experienced this already? Found a solution? Any recommendations? 
Any help much welcome.
Thank you.

fred

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