On 11/19/2010 08:34 PM, Eddie Wai wrote:
Hello Thomas,
We have seen cases where connecting to a LEFTHAND target resulted in the
local host requesting to perform LUN resets and the bnx2i in RHELS 5.5
does not have support for such.
When the driver does not support lun reset, the scsi layer will escalate
to target resets or host resets. For bnx2i in RHEL 5.5, this ends up
escalating to a host reset which results in bnx2i dropping the all the
sessions on the host and relogging into them. So you should be ok
without the lun reset support.
But you can try it with lun support and some other fixes with this test
kernel (do not use in production):
http://people.redhat.com/jwilson/el5/232.el5/
Nov 18 17:53:09 pxfs02 kernel: connection1:0: received itt 0 expected
session age (3)
Is there more to the log? When we see this we normally see something
like a connection error before it.
itt 0 is reserved for by login task, so if we were not logging in then
somehow the driver is returning the wrong itt. If we are logging in then
the driver is somehow returning a bad itt or a old task.
Nov 18 17:53:57 pxfs02 last message repeated 2 times
Nov 18 17:54:07 pxfs02 kernel: connection1:0: detected conn error
(1011)
Nov 18 17:54:08 pxfs02 iscsid: Kernel reported iSCSI connection 1:0
error (1011) state (3)
Nov 18 17:54:10 pxfs02 kernel: bnx2i [04:00.00]: ISCSI_INIT passed
Nov 18 17:54:11 pxfs02 kernel: connection1:0: detected conn error
(1011)
Nov 18 17:54:11 pxfs02 kernel: bnx2i [04:00.00]: ISCSI_INIT passed
Nov 18 17:54:12 pxfs02 kernel: connection1:0: bnx2i: conn update -
MBL 0x100000 FBL 0x40000MRDSL_I 0x40000 MRDSL_T 0x40000
Nov 18 17:54:12 pxfs02 iscsid: connection1:0 is operational after
recovery (1 attempts)
Put under some load, this eventually led to I/O errors and file system
corruption.
The system is a fully updated RHEL5.5 plus the latest initiator from
Mike Christie,
iscsi-initiator-utils-6.2.0.872-6.el5
I'll be happy to supply more details, but I'm rather new to iscsi and
not really sure what
information is relevant.
- Thomas
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