what might cause iSCSI connection 1:0 error ISCSI_ERR_CONN_FAILED

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Hi,

I do have a centos 6.x server which accessed two different iscsistorages
for a long time without any trouble.

The storage-connection is done by a separate NIC and VLAN. The LAN
access is on an other NIC.

This weekend something broke and I don't have any clue what might be the
problem or what caused it.

The storages where mounted RO.

In /var/loge/messages there are lot of messages; so from dmesg:

Dec 10 17:13:21 richter kernel: connection3:0: ping timeout of 5 secs
expired, recv timeout 5, last rx 4324582419, last ping 4324587419, now
4324592419
Dec 10 17:13:21 richter kernel: connection3:0: detected conn error (1011)
Dec 10 17:13:22 richter iscsid: Kernel reported iSCSI connection 3:0
error (1011 - ISCSI_ERR_CONN_FAILED: iSCSI connection failed) state (3)



From dmesg:

 connection1:0: ping timeout of 5 secs expired, recv timeout 5, last rx
4324597423, last ping 4324602423, now 4324607423
 connection1:0: detected conn error (1011)

I restarted the server and the filesystems are back online RW, but there
are still that messages.

	Thanks for any suggestion or hint! Regards . Götz

-- 
Götz Reinicke - IT-Koordinator - Filmakademie Baden-Württemberg GmbH


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