similar to: [SUGGESSTION 1/1] OCFS2: automatic dlm hash table size

Wether the dlm_lock needs to access lvb or not depends on dlm_lock_resource it belongs to. So a new parameter "struct dlm_lock_resource *res" is added to dlm_new_lock() so that we can know if we need to allocate lvb for the dlm_lock. And we have to make the lockres availale for calling dlm_new_lock(). Signed-off-by: Wengang Wang <wen.gang.wang at oracle.com> ---

There are two problems in dlm_run_purgelist 1. If a lockres is found to be in use, dlm_run_purgelist keeps trying to purge the same lockres instead of trying the next lockres. 2. When a lockres is found unused, dlm_run_purgelist releases lockres spinlock before setting DLM_LOCK_RES_DROPPING_REF and calls dlm_purge_lockres. spinlock is reacquired but in this window lockres can get reused. This

Please review the list of patches being applied to the ocfs2 1.4 tree. All patches list the mainline commit hash. Thanks Sunil

The changes from the last drop are: 1. Patch 11 removes struct dlm_lock_name. 2. Patch 12 is an unrelated bugfix. Actually is related to a bugfix that we are retracting in mainline currently. The patch may need more testing. While I did hit the condition in my testing, Marcos hasn't. I am sending it because it can be queued for 2.6.30. Give us more time to test. 3. Patch 13 will be useful

These patches convert the mle list to a hash. The same patches apply on ocfs2 1.4 too. Currently, we use the same number of hash pages for mles and lockres'. This will be addressed in a future patch that will make both of them configurable. Sunil

#backporting the 3 patches at http://kernel.us.oracle.com/~smushran/srini/ to 1.2. enlarge hash_table capacity to fasten hash_table lookups. Signed-off-by: Wengang wang <wen.gang.wang at oracle.com> -- diff -up ./svnocfs2-1.2/fs/ocfs2/dlm/dlmdebug.c.orig ./svnocfs2-1.2/fs/ocfs2/dlm/dlmdebug.c --- ./svnocfs2-1.2/fs/ocfs2/dlm/dlmdebug.c.orig 2009-04-22 11:00:37.000000000 +0800 +++

Ocfs2 supports exporting. PROBLEM: There are 2 problems (1) Current version of ocfs2_get_dentry() may read from disk the inode WITHOUT any cross cluster lock. This may lead to load a stale inode. (2) for deleting an inode, ocfs2_remove_inode() doesn't sync/checkpoint to disk. This also may lead ocfs2_get_dentry() from other node read out stale inode. PROBLEM DETAIL: for problem (1), For

Found 15 patches (out of 162) that appeared relevant to ocfs2 1.4. Please review. Sunil

Hi, all, As we use OCFS2, the network is not good. When the converting request message can?t send to the another node, there will be a node hangs up which will still waiting for the dlm. CAS2/logdir/var/log/syslog.1-6778-Sep 16 20:57:16 CAS2 kernel: [516366.623623] o2net: Connection to node CAS1 (num 1) at 10.172.254.1:7100 has been idle for 30.87 secs, shutting it down.

The following series of patches comprises the bulk of our outstanding changes for Ocfs2. Aside from the usual set of cleanups and fixes that were inappropriate for 2.6.25, there are a few highlights: The '/sys/o2cb' directory has been moved to '/sys/fs/o2cb'. The new location meshes better with modern sysfs layout. A symbolic link has been placed in the old location so as to

Hi, The following patches comprise the bulk of Ocfs2 updates for the 2.6.30 merge window. Aside from larger, more involved fixes, we're adding the following features, which I will describe in the order their patches are mailed. Sunil's exported some more state to our debugfs files, and consolidated some other aspects of our debugfs infrastructure. This will further aid us in debugging

David, So here are the two patches. Remove all patches that you have and apply these. The first one is straight forward. The second one will hopefully fix the livelock issue you have been encountering. People reviewing the patches should note that the second one is slightly different than the one I posted earlier. It removes the BUG_ON in the if condition where we jump to update_holders. The

backgroud: there is a network idle timeout regarding which a node is considered dead or network partition occures. problem: for some product environment, there is a special time during a day. in this special time, a backup work is happening over private network. at the time that the backup is going on, there is very very high load on network. this can lead to ocfs2 network idle timeout and

For nfs exporting, ocfs2_get_dentry() returns the dentry for fh. ocfs2_get_dentry() may read from disk(when inode not in memory) without any cross cluster lock. this leads to load a stale inode. this patch fixes above problem. solution is that in case of inode is not in memory, we get the cluster lock(PR) of alloc inode where the inode in question is allocated from(this causes node on which

This patch plugs a race between the downconvert thread and an unlock ast message. Specifically, after the downconvert worker has done its task, the dc thread needs to check whether an unlock ast made the downconvert moot. Reported-by: David Teigland <teigland at redhat.com> Signed-off-by: Sunil Mushran <sunil.mushran at oracle.com> Acked-by: Mark Fasheh <mfasheh at sus.com> ---

This patch makes the following needlessly global functions static: - stringify_lockname() - dlm_debug_put() Signed-off-by: Adrian Bunk <bunk at kernel.org> --- fs/ocfs2/dlm/dlmdebug.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) fec83555cf8467e5c932fa52177b8f567eb84d94 diff --git a/fs/ocfs2/dlm/dlmdebug.c b/fs/ocfs2/dlm/dlmdebug.c index 5f6d858..1b81dcb 100644 ---

Signed-off-by: Christoph Hellwig <hch@lst.de> Index: linux-2.6/fs/ocfs2/cluster/tcp.c =================================================================== --- linux-2.6.orig/fs/ocfs2/cluster/tcp.c 2007-05-06 13:51:17.000000000 +0200 +++ linux-2.6/fs/ocfs2/cluster/tcp.c 2007-05-17 15:00:14.000000000 +0200 @@ -261,14 +261,12 @@ out: static void o2net_complete_nodes_nsw(struct o2net_node

We should check dlm->dlm_state under dlm->spinlock though maybe in this case it doesn't hurt. Signed-off-by: Wengang Wang <wen.gang.wang at oracle.com> --- fs/ocfs2/dlm/dlmdomain.c | 13 ++++++------- 1 files changed, 6 insertions(+), 7 deletions(-) diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c index 6b5a492..ab82add 100644 --- a/fs/ocfs2/dlm/dlmdomain.c +++

Mainline commit d4f7e650e55af6b235871126f747da88600e8040 attempts to delay the dlm_thread from sending the drop ref message if the lockres is being migrated. The problem is that we make the dlm_thread wait for the migration to complete. This causes a deadlock as dlm_thread also participates in the lockres migration process. A better fix for the original oss bugzilla#1012 is in testing.

I'm running a bit late with the e-mail this time around, but I think that's ok since there really isn't any major new features here - the bulk of the Ocfs2 update is bug fixes, or cleanups. The same goes for configfs. The only two things that could be described as features would be: - Sunil has updated Ocfs2 to provide even more live cluster locking information via debugfs. - Joel