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import device-mapper-multipath-0.8.4-21.el8

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CentOS Sources 2022-01-27 04:55:23 +00:00 committed by Stepan Oksanichenko
parent 3f53e5b75b
commit 39739a9ea1
3 changed files with 181 additions and 1 deletions
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133
SOURCES/0088-libmultipath-make-helper-function-to-trigger-path-ue.patch Normal file
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@ -0,0 +1,133 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Benjamin Marzinski <bmarzins@redhat.com>
Date: Mon, 17 Jan 2022 14:45:38 -0600
Subject: [PATCH] libmultipath: make helper function to trigger path uevents
Pull the code that checks if a path needs to trigger a uevent, and
triggers, out of trigger_paths_udev_change() and into a new function,
trigger_path_udev_change(). This function will be used separately by
a future patch. No functional changes.
Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
---
libmultipath/configure.c | 79 +++++++++++++++++++++-------------------
libmultipath/configure.h | 1 +
2 files changed, 43 insertions(+), 37 deletions(-)
diff --git a/libmultipath/configure.c b/libmultipath/configure.c
index 9c8d3e34..9a9890f5 100644
--- a/libmultipath/configure.c
+++ b/libmultipath/configure.c
@@ -545,11 +545,8 @@ unref:
}
void
-trigger_paths_udev_change(struct multipath *mpp, bool is_mpath)
+trigger_path_udev_change(struct path *pp, bool is_mpath)
{
- struct pathgroup *pgp;
- struct path *pp;
- int i, j;
/*
* If a path changes from multipath to non-multipath, we must
* synthesize an artificial "add" event, otherwise the LVM2 rules
@@ -557,6 +554,45 @@ trigger_paths_udev_change(struct multipath *mpp, bool is_mpath)
* irritate ourselves with an "add", so use "change".
*/
const char *action = is_mpath ? "change" : "add";
+ const char *env;
+
+ if (!pp->udev)
+ return;
+ /*
+ * Paths that are already classified as multipath
+ * members don't need another uevent.
+ */
+ env = udev_device_get_property_value(
+ pp->udev, "DM_MULTIPATH_DEVICE_PATH");
+
+ if (is_mpath && env != NULL && !strcmp(env, "1")) {
+ /*
+ * If FIND_MULTIPATHS_WAIT_UNTIL is not "0",
+ * path is in "maybe" state and timer is running
+ * Send uevent now (see multipath.rules).
+ */
+ env = udev_device_get_property_value(
+ pp->udev, "FIND_MULTIPATHS_WAIT_UNTIL");
+ if (env == NULL || !strcmp(env, "0"))
+ return;
+ } else if (!is_mpath &&
+ (env == NULL || !strcmp(env, "0")))
+ return;
+
+ condlog(3, "triggering %s uevent for %s (is %smultipath member)",
+ action, pp->dev, is_mpath ? "" : "no ");
+ sysfs_attr_set_value(pp->udev, "uevent",
+ action, strlen(action));
+ trigger_partitions_udev_change(pp->udev, action,
+ strlen(action));
+}
+
+void
+trigger_paths_udev_change(struct multipath *mpp, bool is_mpath)
+{
+ struct pathgroup *pgp;
+ struct path *pp;
+ int i, j;
if (!mpp || !mpp->pg)
return;
@@ -564,39 +600,8 @@ trigger_paths_udev_change(struct multipath *mpp, bool is_mpath)
vector_foreach_slot (mpp->pg, pgp, i) {
if (!pgp->paths)
continue;
- vector_foreach_slot(pgp->paths, pp, j) {
- const char *env;
-
- if (!pp->udev)
- continue;
- /*
- * Paths that are already classified as multipath
- * members don't need another uevent.
- */
- env = udev_device_get_property_value(
- pp->udev, "DM_MULTIPATH_DEVICE_PATH");
-
- if (is_mpath && env != NULL && !strcmp(env, "1")) {
- /*
- * If FIND_MULTIPATHS_WAIT_UNTIL is not "0",
- * path is in "maybe" state and timer is running
- * Send uevent now (see multipath.rules).
- */
- env = udev_device_get_property_value(
- pp->udev, "FIND_MULTIPATHS_WAIT_UNTIL");
- if (env == NULL || !strcmp(env, "0"))
- continue;
- } else if (!is_mpath &&
- (env == NULL || !strcmp(env, "0")))
- continue;
-
- condlog(3, "triggering %s uevent for %s (is %smultipath member)",
- action, pp->dev, is_mpath ? "" : "no ");
- sysfs_attr_set_value(pp->udev, "uevent",
- action, strlen(action));
- trigger_partitions_udev_change(pp->udev, action,
- strlen(action));
- }
+ vector_foreach_slot(pgp->paths, pp, j)
+ trigger_path_udev_change(pp, is_mpath);
}
mpp->needs_paths_uevent = 0;
diff --git a/libmultipath/configure.h b/libmultipath/configure.h
index 8a266d31..5cf08d45 100644
--- a/libmultipath/configure.h
+++ b/libmultipath/configure.h
@@ -56,6 +56,7 @@ int get_refwwid (enum mpath_cmds cmd, char * dev, enum devtypes dev_type,
vector pathvec, char **wwid);
int reload_map(struct vectors *vecs, struct multipath *mpp, int refresh, int is_daemon);
struct udev_device *get_udev_device(const char *dev, enum devtypes dev_type);
+void trigger_path_udev_change(struct path *pp, bool is_mpath);
void trigger_paths_udev_change(struct multipath *mpp, bool is_mpath);
void trigger_partitions_udev_change(struct udev_device *dev, const char *action,
int len);

40
SOURCES/0089-multipathd-trigger-udev-change-on-path-addition.patch Normal file
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@ -0,0 +1,40 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Benjamin Marzinski <bmarzins@redhat.com>
Date: Mon, 17 Jan 2022 16:46:18 -0600
Subject: [PATCH] multipathd: trigger udev change on path addition
When a multipath device is created for the first time, there is a window
where some path devices way be added to the multipath device, but never
claimed in udev. This can allow other device owners, like lvm, to think
they can use the device.
When a multipath device is first created, all the existing paths that
are not claimed by multipath have a uevent triggered so that they can
get claimed. After that, multipath assumes all future paths added to the
multipath device will have been claimed by multipath, since the device's
WWID is now in the wwids file. This doesn't work for any paths that
have already been processed by the multipath.rules udev rules before
the multipath device was created.
To close this window, when path device is added, and a matching
multipath device already exists, multipathd now checks if the device is
claimed by multipath, and if not, triggers a uevent to claim it.
Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
---
multipathd/main.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/multipathd/main.c b/multipathd/main.c
index e2b9d546..f4b79882 100644
--- a/multipathd/main.c
+++ b/multipathd/main.c
@@ -1005,6 +1005,8 @@ ev_add_path (struct path * pp, struct vectors * vecs, int need_do_map)
free_path(pp);
return 1;
}
+ if (mpp)
+ trigger_path_udev_change(pp, true);
if (mpp && mpp->wait_for_udev &&
(pathcount(mpp, PATH_UP) > 0 ||
(pathcount(mpp, PATH_GHOST) > 0 &&

9
SPECS/device-mapper-multipath.spec
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@ -1,7 +1,7 @@
Summary: Tools to manage multipath devices using device-mapper
Name: device-mapper-multipath
Version: 0.8.4
Release: 20%{?dist}
Release: 21%{?dist}
License: GPLv2
Group: System Environment/Base
URL: http://christophe.varoqui.free.fr/
@ -98,6 +98,8 @@ Patch00084: 0084-libmultipath-split-set_int-to-enable-reuse.patch
Patch00085: 0085-libmultipath-cleanup-invalid-config-handling.patch
Patch00086: 0086-libmultipath-don-t-return-error-on-invalid-values.patch
Patch00087: 0087-multipathd-avoid-unnecessary-path-read-only-reloads.patch
Patch00088: 0088-libmultipath-make-helper-function-to-trigger-path-ue.patch
Patch00089: 0089-multipathd-trigger-udev-change-on-path-addition.patch
# runtime
Requires: %{name}-libs = %{version}-%{release}
@ -299,6 +301,11 @@ fi
%{_pkgconfdir}/libdmmp.pc
%changelog
* Tue Jan 18 2022 Benjamin Marzinski <bmarzins@redhat.com> 0.8.4-21
- Add 0088-libmultipath-make-helper-function-to-trigger-path-ue.patch
- Add 0089-multipathd-trigger-udev-change-on-path-addition.patch
- Resolves: bz #1862032
* Thu Nov 18 2021 Benjamin Marzinski <bmarzins@redhat.com> 0.8.4-20
- Add 0079-libmultipath-use-typedef-for-keyword-handler-and-pri.patch
- Add 0080-libmultipath-print-the-correct-file-when-parsing-fai.patch