From: Benjamin Marzinski <bmarzins@redhat.com>
To: Christophe Varoqui <christophe.varoqui@opensvc.com>
Cc: device-mapper development <dm-devel@redhat.com>,
Martin Wilck <Martin.Wilck@suse.com>
Subject: [dm-devel] [PATCH 4/5] libmultipath: remove unneeded code in coalesce_paths
Date: Thu, 29 Jul 2021 16:46:04 -0500 [thread overview]
Message-ID: <1627595165-19980-5-git-send-email-bmarzins@redhat.com> (raw)
In-Reply-To: <1627595165-19980-1-git-send-email-bmarzins@redhat.com>
The code at the end of coalesce_paths() removes a multipath device that
was just created/reloaded, if none of its path devices have pp->dev set.
This code is very old, and no longer has any actual effect. Multipath
devices no longer get placed in pathvec without having pp->dev set. Even
if they could, there's no point in creating/reloading the device and
then immediately removing it.
Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
---
libmultipath/configure.c | 46 ----------------------------------------
1 file changed, 46 deletions(-)
diff --git a/libmultipath/configure.c b/libmultipath/configure.c
index 0c00bf50..e64eb7bc 100644
--- a/libmultipath/configure.c
+++ b/libmultipath/configure.c
@@ -1060,28 +1060,6 @@ int domap(struct multipath *mpp, char *params, int is_daemon)
return DOMAP_FAIL;
}
-static int
-deadmap (struct multipath * mpp)
-{
- int i, j;
- struct pathgroup * pgp;
- struct path * pp;
-
- if (!mpp->pg)
- return 1;
-
- vector_foreach_slot (mpp->pg, pgp, i) {
- if (!pgp->paths)
- continue;
-
- vector_foreach_slot (pgp->paths, pp, j)
- if (strlen(pp->dev))
- return 0; /* alive */
- }
-
- return 1; /* dead */
-}
-
extern int
check_daemon(void)
{
@@ -1318,30 +1296,6 @@ int coalesce_paths (struct vectors *vecs, vector mpvec, char *refwwid,
KEEP_VEC);
map_processed = true;
}
- /*
- * Flush maps with only dead paths (ie not in sysfs)
- * Keep maps with only failed paths
- */
- if (mpvec) {
- vector_foreach_slot (newmp, mpp, i) {
- char alias[WWID_SIZE];
-
- if (!deadmap(mpp))
- continue;
-
- strlcpy(alias, mpp->alias, WWID_SIZE);
-
- vector_del_slot(newmp, i);
- i--;
- remove_map(mpp, vecs->pathvec, vecs->mpvec, KEEP_VEC);
-
- if (dm_flush_map(alias))
- condlog(2, "%s: remove failed (dead)",
- alias);
- else
- condlog(2, "%s: remove (dead)", alias);
- }
- }
if (map_processed && !is_daemon && (no_daemon || !check_daemon()))
condlog(2, "multipath devices exist, but multipathd service is not running");
--
2.17.2
--
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next prev parent reply other threads:[~2021-07-29 21:47 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-29 21:46 [dm-devel] [PATCH 0/5] Mulitpath: miscellaneous patches Benjamin Marzinski
2021-07-29 21:46 ` [dm-devel] [PATCH 1/5] multipath.conf: fix typo in ghost_delay description Benjamin Marzinski
2021-08-12 10:22 ` Martin Wilck
2021-07-29 21:46 ` [dm-devel] [PATCH 2/5] mpathpersist: fail commands when no usable paths exist Benjamin Marzinski
2021-08-12 10:23 ` Martin Wilck
2021-07-29 21:46 ` [dm-devel] [PATCH 3/5] multipath: print warning if multipathd is not running Benjamin Marzinski
2021-08-12 10:23 ` Martin Wilck
2021-08-30 21:28 ` Benjamin Marzinski
2021-07-29 21:46 ` Benjamin Marzinski [this message]
2021-08-12 10:23 ` [dm-devel] [PATCH 4/5] libmultipath: remove unneeded code in coalesce_paths Martin Wilck
2021-07-29 21:46 ` [dm-devel] [PATCH 5/5] libmultipath: deal with dynamic PTHREAD_STACK_MIN Benjamin Marzinski
2021-08-12 10:23 ` Martin Wilck
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