device-mapper-multipath/SOURCES/0103-libmultipath-Add-documentation-for-the-protocol-subs.patch
2022-09-28 12:02:24 +00:00

55 lines
2.0 KiB
Diff

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