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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, 2 Jul 2014 12:49:53 -0500
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Subject: [PATCH] RH: Remove the property blacklist exception builtin
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Multipath set the default property blacklist exceptions to
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(ID_SCSI_VPD|ID_WWN). This has the effect of blacklisting some internal
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devices. These devices may never have multiple paths, but it is nice
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to be able to set multipath up on them all the same. This patch simply
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removes the default, and makes it so that if no property
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blacklist_exception is given, then devices aren't failed for not matching
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it.
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Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
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---
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libmultipath/blacklist.c | 12 ++++--------
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multipath/multipath.conf.5 | 14 ++++++--------
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2 files changed, 10 insertions(+), 16 deletions(-)
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diff --git a/libmultipath/blacklist.c b/libmultipath/blacklist.c
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index e0d0279..556c0b9 100644
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--- a/libmultipath/blacklist.c
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+++ b/libmultipath/blacklist.c
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@@ -204,12 +204,6 @@ setup_default_blist (struct config * conf)
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if (store_ble(conf->blist_devnode, str, ORIGIN_DEFAULT))
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return 1;
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- str = STRDUP("(SCSI_IDENT_|ID_WWN)");
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- if (!str)
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- return 1;
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- if (store_ble(conf->elist_property, str, ORIGIN_DEFAULT))
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- return 1;
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-
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vector_foreach_slot (conf->hwtable, hwe, i) {
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if (hwe->bl_product) {
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if (find_blacklist_device(conf->blist_device,
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@@ -394,9 +388,11 @@ filter_property(struct config *conf, struct udev_device *udev, int lvl)
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if (udev) {
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/*
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* This is the inverse of the 'normal' matching;
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- * the environment variable _has_ to match.
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+ * the environment variable _has_ to match
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+ * if a whitelist is present.
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*/
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- r = MATCH_PROPERTY_BLIST_MISSING;
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+ if (VECTOR_SIZE(conf->elist_property))
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+ r = MATCH_PROPERTY_BLIST_MISSING;
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udev_list_entry_foreach(list_entry,
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udev_device_get_properties_list_entry(udev)) {
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diff --git a/multipath/multipath.conf.5 b/multipath/multipath.conf.5
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index 646c156..768ab83 100644
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--- a/multipath/multipath.conf.5
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+++ b/multipath/multipath.conf.5
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@@ -1235,16 +1235,14 @@ keywords. Both are regular expressions. For a full description of these keywords
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Regular expression for an udev property. All
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devices that have matching udev properties will be excluded/included.
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The handling of the \fIproperty\fR keyword is special,
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-because devices \fBmust\fR have at least one whitelisted udev property;
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+because if a property blacklist_exception is set, devices \fBmust\fR have at
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+least one whitelisted udev property;
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otherwise they're treated as blacklisted, and the message
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"\fIblacklisted, udev property missing\fR" is displayed in the logs.
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-.
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-.RS
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-.PP
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-The default \fIblacklist exception\fR is: \fB(SCSI_IDENT_|ID_WWN)\fR, causing
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-well-behaved SCSI devices and devices that provide a WWN (World Wide Number)
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-to be included, and all others to be excluded.
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-.RE
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+For example, setting the property blacklist_exception to
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+\fB(SCSI_IDENT_|ID_WWN)\fR, will cause well-behaved SCSI devices and devices
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+that provide a WWN (World Wide Number) to be included, and all others to be
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+excluded. This works to exclude most non-multipathable devices.
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.TP
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.B protocol
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Regular expression for the protocol of a device to be excluded/included.
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--
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2.17.2
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