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
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Dare to fix things before they break . . .
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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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