X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=extras%2Fscsi_id%2Fscsi_id.config;h=4f31b1c498b6cf169923be0d215b28cdd72a9062;hb=2321ba6fd89635f321ec08fa3803aa7e20aa76bf;hp=4fdb89e28a31eca254ee0b8163be0e181e905820;hpb=c521693b54956c1f2dd0c0947c819b8570f6edaa;p=elogind.git

diff --git a/extras/scsi_id/scsi_id.config b/extras/scsi_id/scsi_id.config
index 4fdb89e28..4f31b1c49 100644
--- a/extras/scsi_id/scsi_id.config
+++ b/extras/scsi_id/scsi_id.config
@@ -9,19 +9,21 @@
 # INQUIRY product identification field. Per the SCSI INQUIRY, the vendor
 # is limited to 8 bytes, model to 16 bytes.
 #
-# The first maching line found is used. Short matches match longer ones,
+# The first matching line found is used. Short matches match longer ones,
 # if you do not want such a match space fill the extra bytes. If no model
 # is specified, only the vendor string need match.
 #
-# The "option" line is searched when scsi_id first starts up (for use with
-# hotplug during boot).
+# The "options" line is searched for when scsi_id starts up, and is
+# primarily for use with hotplug.
 #
 # options=<any scsi_id command line options>
 #
 # vendor=string[,model=string],options=<per-device scsi_id options>
 
 #
-# If you normally don't need id's, black list everyone:
+# If you normally don't need scsi id's, or might be attaching devices of
+# an unknown functionality, black list everyone. This is the default
+# behaviour (if no -b or -g is specified).
 #
 options=-b
 
@@ -30,11 +32,17 @@ options=-b
 #
 vendor=someone, model=nicedrive, options=-g
 
-# If you have all good devices on your system use, mark all as good:
+# If you know all the scsi devices on your system support valid id's,
+# remove the options=-b line, and mark all devices as good:
 
 ## options=-g
 
 # Then black list any offenders. Missing entries here could be dangerous
-# if you rely on the id for naming or multi-path configuration!
+# if you rely on the id for persistent naming or multi-path configuration.
 
 ## vendor=ELBONIA, model=borken, options=-b
+
+# EMC SYMMETRIX models 4 and 5, and some model 6 systems return the VSI
+# field of the page 83 reply according to SCSI-2 format.  This format is
+# binary encoded hexa-decimal as opposed to the Identifiscation descriptor
+# utilized by both SPC-2 and SPC-3 compliant systems.