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aic7xxx: SCB_xxx error ???



Recently, I have begun seeing a disruption of one (1) SCSI bus on one
(1) system.  It is very intermittent (see Frequency, below), and lasts
for a minute or so.  The final message indicates a *recovery*; but, I
wonder whether or not I am approaching hardware failure -- and, which
hardware?  Controller?  Drives?

Google shows some questions on Debian and FreeBSD; but, there I found no
definitive answer.  The gist of googling indicates that this maybe a
driver issue, rather than hardware.

What do you think?

A full log of a recent incident is here:

    <http://helices.org/tmP/loki.scsi.kern.out>

    # uname -a
    Linux loki 2.6.6-2-686 #1 Wed Jun 16 01:25:38 PDT 2004 i686 GNU/Linux

Frequency:
    Jul 28 08:29
    Aug  9 11:25
    Aug  9 20:23
    Aug 18 12:03
    Aug 20 00:02
    Aug 22 14:51

Unique sorted summary of SCB_xxx errors, from all incidents above:

	0 SCB_CONTROL[0x0] SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0xff] 
	0 SCB_CONTROL[0x68]:(ULTRAENB|TAG_ENB|DISCENB) SCB_SCSIID[0x7] 
	0 SCB_CONTROL[0x6c]:(DISCONNECTED|ULTRAENB|TAG_ENB|DISCENB) 
	0 SCB_CONTROL[0x7c]:(DISCONNECTED|ULTRAENB|MK_MESSAGE|TAG_ENB|DISCENB) 
	0 SCB_CONTROL[0xe8]:(ULTRAENB|TAG_ENB|DISCENB|TARGET_SCB) 
	1 SCB_CONTROL[0x0] SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0xff] 
	1 SCB_CONTROL[0x68]:(ULTRAENB|TAG_ENB|DISCENB) SCB_SCSIID[0x7] 
	1 SCB_CONTROL[0x6c]:(DISCONNECTED|ULTRAENB|TAG_ENB|DISCENB) 
	1 SCB_CONTROL[0x7c]:(DISCONNECTED|ULTRAENB|MK_MESSAGE|TAG_ENB|DISCENB) 
	1 SCB_CONTROL[0xe8]:(ULTRAENB|TAG_ENB|DISCENB|TARGET_SCB) 
	10 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) 
	11 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) 
	11 SCB_CONTROL[0x68]:(ULTRAENB|TAG_ENB|DISCENB) SCB_SCSIID[0x7] 
	11 SCB_CONTROL[0x7c]:(DISCONNECTED|ULTRAENB|MK_MESSAGE|TAG_ENB|DISCENB) 
	12 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) 
	13 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) 
	14 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) 
	15 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) 
	2 SCB_CONTROL[0x0] SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0xff] 
	2 SCB_CONTROL[0x68]:(ULTRAENB|TAG_ENB|DISCENB) SCB_SCSIID[0x7] 
	2 SCB_CONTROL[0x6c]:(DISCONNECTED|ULTRAENB|TAG_ENB|DISCENB) 
	2 SCB_CONTROL[0x7c]:(DISCONNECTED|ULTRAENB|MK_MESSAGE|TAG_ENB|DISCENB) 
	2 SCB_CONTROL[0xe8]:(ULTRAENB|TAG_ENB|DISCENB|TARGET_SCB) 
	3 SCB_CONTROL[0x0] SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0xff] 
	3 SCB_CONTROL[0x68]:(ULTRAENB|TAG_ENB|DISCENB) SCB_SCSIID[0x7] 
	3 SCB_CONTROL[0x6c]:(DISCONNECTED|ULTRAENB|TAG_ENB|DISCENB) 
	3 SCB_CONTROL[0x7c]:(DISCONNECTED|ULTRAENB|MK_MESSAGE|TAG_ENB|DISCENB) 
	3 SCB_CONTROL[0xe8]:(ULTRAENB|TAG_ENB|DISCENB|TARGET_SCB) 
	4 SCB_CONTROL[0x0] SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0xff] 
	4 SCB_CONTROL[0x68]:(ULTRAENB|TAG_ENB|DISCENB) SCB_SCSIID[0x7] 
	4 SCB_CONTROL[0x6c]:(DISCONNECTED|ULTRAENB|TAG_ENB|DISCENB) 
	4 SCB_CONTROL[0xe8]:(ULTRAENB|TAG_ENB|DISCENB|TARGET_SCB) 
	5 SCB_CONTROL[0x0] SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0xff] 
	5 SCB_CONTROL[0x68]:(ULTRAENB|TAG_ENB|DISCENB) SCB_SCSIID[0x7] 
	5 SCB_CONTROL[0x6c]:(DISCONNECTED|ULTRAENB|TAG_ENB|DISCENB) 
	5 SCB_CONTROL[0x7c]:(DISCONNECTED|ULTRAENB|MK_MESSAGE|TAG_ENB|DISCENB) 
	5 SCB_CONTROL[0xe8]:(ULTRAENB|TAG_ENB|DISCENB|TARGET_SCB) 
	6 SCB_CONTROL[0x0] SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0xff] 
	6 SCB_CONTROL[0x68]:(ULTRAENB|TAG_ENB|DISCENB) SCB_SCSIID[0x7] 
	6 SCB_CONTROL[0x6c]:(DISCONNECTED|ULTRAENB|TAG_ENB|DISCENB) 
	6 SCB_CONTROL[0x7c]:(DISCONNECTED|ULTRAENB|MK_MESSAGE|TAG_ENB|DISCENB) 
	6 SCB_CONTROL[0xe8]:(ULTRAENB|TAG_ENB|DISCENB|TARGET_SCB) 
	7 SCB_CONTROL[0x0] SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0xff] 
	7 SCB_CONTROL[0x68]:(ULTRAENB|TAG_ENB|DISCENB) SCB_SCSIID[0x7] 
	7 SCB_CONTROL[0x6c]:(DISCONNECTED|ULTRAENB|TAG_ENB|DISCENB) 
	7 SCB_CONTROL[0x7c]:(DISCONNECTED|ULTRAENB|MK_MESSAGE|TAG_ENB|DISCENB) 
	7 SCB_CONTROL[0xe8]:(ULTRAENB|TAG_ENB|DISCENB|TARGET_SCB) 
	8 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) 
	9 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|TWIN_TID) 
	CSIID[0x7] SCB_LUN[0x0] SCB_TAG[0xff] 
	SCB_LUN[0x0] 
	SCB_LUN[0x0] SCB_TAG[0x0] 
	SCB_LUN[0x0] SCB_TAG[0x1] 
	SCB_LUN[0x0] SCB_TAG[0x4] 
	SCB_LUN[0x0] SCB_TAG[0x5] 
	SCB_LUN[0x0] SCB_TAG[0x6] 
	SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
	SCB_SCSIID[0x7] SCB_LUN[0x0] 
	SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0x0] 
	SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0x3] 
	SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0x4] 
	SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0x5] 
	SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0x6] 
	SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0x7] 
	SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0xb] 
	SCB_SCSIID[0x7] SCB_LUN[0x0] SCB_TAG[0xff] 


-- 
Best Regards,

mds
mds resource
877.596.8237
-
Dare to fix things before they break . . .
-
Our capacity for understanding is inversely proportional to how much
we think we know.  The more I know, the more I know I don't know . . .
--

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