Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=46b43eed7018bab3a4e8c259eed27697b9170cb8
Commit: 46b43eed7018bab3a4e8c259eed27697b9170cb8
Parent: aec64e1be2225c6fc64499594d23257c6adf6168
Author: David Teigland <[EMAIL PROTECTED]>
AuthorDate: Tue Jan 8 16:24:00 2008 -0600
Committer: David Teigland <[EMAIL PROTECTED]>
CommitDate: Wed Jan 30 11:04:42 2008 -0600
dlm: reject messages from non-members
Messages from nodes that are no longer members of the lockspace should be
ignored. When nodes are removed from the lockspace, recovery can
sometimes complete quickly enough that messages arrive from a removed node
after recovery has completed. When processed, these messages would often
cause an error message, and could in some cases change some state, causing
problems.
Signed-off-by: David Teigland <[EMAIL PROTECTED]>
---
fs/dlm/lock.c | 9 ++++++++-
fs/dlm/member.c | 4 ++--
fs/dlm/member.h | 3 ++-
3 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index d5e8ea1..c3b9fca 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -1,7 +1,7 @@
/******************************************************************************
*******************************************************************************
**
-** Copyright (C) 2005-2007 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2005-2008 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -3643,6 +3643,13 @@ static void receive_lookup_reply(struct dlm_ls *ls,
struct dlm_message *ms)
static void _receive_message(struct dlm_ls *ls, struct dlm_message *ms)
{
+ if (!dlm_is_member(ls, ms->m_header.h_nodeid)) {
+ log_debug(ls, "ignore non-member message %d from %d %x %x %d",
+ ms->m_type, ms->m_header.h_nodeid, ms->m_lkid,
+ ms->m_remid, ms->m_result);
+ return;
+ }
+
switch (ms->m_type) {
/* messages sent to a master node */
diff --git a/fs/dlm/member.c b/fs/dlm/member.c
index e9cdcab..fa17f5a 100644
--- a/fs/dlm/member.c
+++ b/fs/dlm/member.c
@@ -1,7 +1,7 @@
/******************************************************************************
*******************************************************************************
**
-** Copyright (C) 2005-2007 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2005-2008 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -70,7 +70,7 @@ static void dlm_remove_member(struct dlm_ls *ls, struct
dlm_member *memb)
ls->ls_num_nodes--;
}
-static int dlm_is_member(struct dlm_ls *ls, int nodeid)
+int dlm_is_member(struct dlm_ls *ls, int nodeid)
{
struct dlm_member *memb;
diff --git a/fs/dlm/member.h b/fs/dlm/member.h
index 927c08c..7a26fca 100644
--- a/fs/dlm/member.h
+++ b/fs/dlm/member.h
@@ -1,7 +1,7 @@
/******************************************************************************
*******************************************************************************
**
-** Copyright (C) 2005 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2005-2008 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -19,6 +19,7 @@ void dlm_clear_members(struct dlm_ls *ls);
void dlm_clear_members_gone(struct dlm_ls *ls);
int dlm_recover_members(struct dlm_ls *ls, struct dlm_recover *rv,int
*neg_out);
int dlm_is_removed(struct dlm_ls *ls, int nodeid);
+int dlm_is_member(struct dlm_ls *ls, int nodeid);
#endif /* __MEMBER_DOT_H__ */
-
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