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authorDouglas Gilbert <dgilbert@interlog.com>2021-10-31 01:36:51 +0000
committerDouglas Gilbert <dgilbert@interlog.com>2021-10-31 01:36:51 +0000
commit901931cfdad6f06e22c24beba339bb08d2265498 (patch)
tree99378c1ca0db087eb17c3f1aeaadce8c30d3dbeb /doc
parentf0195003bb0c66ba55084b2f7e0fe982f08c5675 (diff)
downloadsg3_utils-901931cfdad6f06e22c24beba339bb08d2265498.tar.gz
sg_logs: additions to Command duration limits statistics log page [spc6r06]; configure.ac: tweak to accepts uclinux as linux
git-svn-id: https://svn.bingwo.ca/repos/sg3_utils/trunk@917 6180dd3e-e324-4e3e-922d-17de1ae2f315
Diffstat (limited to 'doc')
-rw-r--r--doc/sg_ses.87
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diff --git a/doc/sg_ses.8 b/doc/sg_ses.8
index 4afcb2b4..175e2fca 100644
--- a/doc/sg_ses.8
+++ b/doc/sg_ses.8
@@ -50,6 +50,13 @@ most recent reference for this utility is the draft SCSI Enclosure Services
standards for SES, SES\-2 and SES\-3 are ANSI INCITS 305\-1998 and ANSI
INCITS 448\-2008 and ANSI INCITS 518\-2017 respectively.
.PP
+SAS expanders typically have a SES device attached via a virtual port.
+Some HBAs (SCSI initiators) choose to expose a SES device internally. That
+means the SCSI subsystem on the host machine can see the SES device, but
+devices connected to that HBA (e.g. a SAS expander) cannot see the HBA's
+SES device. That internal SES device might report on the temperature(s)
+of the HBA and whether anything is connected to its SCSI ports.
+.PP
The first form shown in the synopsis is for fetching and decoding dpages or
fields from the SES \fIDEVICE\fR. A SCSI RECEIVE DIAGNOSTIC RESULTS command
is sent to the \fIDEVICE\fR to obtain each dpage response. Rather than