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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Benjamin Marzinski <bmarzins@redhat.com>
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Date: Wed, 13 Apr 2022 23:27:41 -0500
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Subject: [PATCH] libmultipath: Add documentation for the protocol subsection
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Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
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Reviewed-by: Martin Wilck <mwilck@suse.com>
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---
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multipath/multipath.conf.5 | 32 ++++++++++++++++++++++++++++++++
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1 file changed, 32 insertions(+)
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diff --git a/multipath/multipath.conf.5 b/multipath/multipath.conf.5
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index b14fd215..abbc89af 100644
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--- a/multipath/multipath.conf.5
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+++ b/multipath/multipath.conf.5
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@@ -1730,6 +1730,38 @@ the values are taken from the \fIdevices\fR or \fIdefaults\fR sections:
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.RE
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.PD
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.LP
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+The overrides section also recognizes the optional \fIprotocol\fR subsection,
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+and can contain multiple protocol subsections. Path devices are matched against
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+the protocol subsection using the mandatory \fItype\fR attribute. Attributes
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+in a matching protocol subsection take precedence over attributes in the rest
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+of the overrides section. If there are multiple matching protocol subsections,
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+later entries take precedence.
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+.TP
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+.B protocol subsection
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+The protocol subsection recognizes the following mandatory attribute:
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+.RS
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+.TP
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+.B type
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+The protocol string of the path device. The possible values are \fIscsi:fcp\fR,
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+\fIscsi:spi\fR, \fIscsi:ssa\fR, \fIscsi:sbp\fR, \fIscsi:srp\fR,
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+\fIscsi:iscsi\fR, \fIscsi:sas\fR, \fIscsi:adt\fR, \fIscsi:ata\fR,
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+\fIscsi:unspec\fR, \fIccw\fR, \fIcciss\fR, \fInvme\fR, and \fIundef\fR. This is
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+\fBnot\fR a regular expression. the path device protcol string must match
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+exactly. The protocol that a path is using can be viewed by running
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+\fBmultipathd show paths format "%d %P"\fR
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+.LP
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+The following attributes are optional; if not set, the default values are taken
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+from the \fIoverrides\fR, \fIdevices\fR, or \fIdefaults\fR section:
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+.sp 1
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+.PD .1v
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+.RS
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+.TP
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+.B fast_io_fail_tmo
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+.TP
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+.B dev_loss_tmo
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+.TP
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+.B eh_deadline
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+.PD
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.
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.
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.\" ----------------------------------------------------------------------------
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