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XenServer 5.5 with iSCSI Storage on Open-E DSS / Chelsio 10G network card

Article ID: 1103
Last updated: 31 Mar, 2011

If you experience random VM freezes lasting a few seconds, it would be good idea to check if the XenServer has a valid network card driver.

As a result you may see the following errors:


2011-03-28 12:06:16 Kernel.Info kernel: connection16:0: iscsi: detected conn error (1011)

2011-03-28 12:06:17 Daemon.Warning iscsid: Kernel reported iSCSI connection 16:0 error (1011) state (3)

2011-03-28 12:06:19 Kernel.Info kernel: iscsi: host reset succeeded

2011-03-28 12:06:20 Daemon.Warning iscsid: connection16:0 is operational after recovery (2 attempts)

2011-03-28 12:06:29 Kernel.Error kernel: sd 18:0:0:0: timing out command, waited 360s

2011-03-28 12:06:29 Kernel.Info kernel: sd 18:0:0:0: SCSI error: return code = 0x06050000


XenServer 5.5 Update 2 doesn't contain driver for Chelsio 10G network card, so an update to XenServer version 5.6 which have it, is strongly recommended.

This KB article is based on CU post on Citrix forum:

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Article ID: 1103
Last updated: 31 Mar, 2011
Revision: 1
Views: 3038
Posted: 31 Mar, 2011 by --
Updated: 31 Mar, 2011 by
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