similar to: O2CB global heartbeat - hopefully final drop!

[ This is ancient code. - dan ] fs/fs_context.c 168 { 169 int ret; 170 171 struct fs_parameter param = { 172 .key = key, 173 .type = fs_value_is_flag, 174 .size = v_size, 175 }; 176 177 if (value) { --> 178 param.string =

Hi all, I have a bug with OCFS through configfs : to illustrate this, try : while true ; do ls -l /sys/kernel/config/cluster/ocfs2/heartbeat ; done& while true ; do echo 31> /sys/kernel/config/cluster/ocfs2/heartbeat/dead_threshold ; done& So, I have a kernel crash : BUG: unable to handle kernel NULL pointer dereference at 0000000000000040 IP: [<ffffffffa01fd214>]

Hi all, I have a bug with OCFS through configfs : to illustrate this, try : while true ; do ls -l /sys/kernel/config/cluster/ocfs2/heartbeat ; done& while true ; do echo 31> /sys/kernel/config/cluster/ocfs2/heartbeat/dead_threshold ; done& So, I have a kernel crash : BUG: unable to handle kernel NULL pointer dereference at 0000000000000040 IP: [<ffffffffa01fd214>]

After some parallel mount/umount test on ocfs2, we got this: slab error in kmem_cache_destroy(): cache `o2dlm_mle': Can't free all objects. Then we found a memleak situation in dlm_add_migration_mle(). When a mle found, it will be removed from dlm->hlist. If there is no pointer to it at that moment, the mle will become an ?orphan mle? that no process can find and release.

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

Added two debugfs entries... one to dump o2hb livenodes and the other to dump osb. $ cat /sys/kernel/debug/ocfs2/BC4F4550BEA74F92BDCC746AAD2EC0BF/fs_state Device => Id: 8,65 Uuid: BC4F4550BEA74F92BDCC746AAD2EC0BF Gen: 0xA02024F2 Label: sunil-xattr Volume => State: 1 Flags: 0x0 Sizes => Block: 4096 Cluster: 4096 Features => Compat: 0x1 Incompat: 0x350 ROcompat: 0x1

This patch separates o2net and o2quo from knowing about one another as much as possible. This is the first in a series of patches that will allow userspace cluster interaction. Quorum is separated out first, and will ultimately only be associated with the disk heartbeat as a separate module. To do so, this patch performs the following changes: * o2hb_notify() is added to handle injection of

This patch removes the following unused EXPORT_SYMBOL_GPL's: - cluster/heartbeat.c: o2hb_check_node_heartbeating_from_callback - cluster/heartbeat.c: o2hb_stop_all_regions - cluster/nodemanager.c: o2nm_get_node_by_num - cluster/nodemanager.c: o2nm_configured_node_map - cluster/nodemanager.c: o2nm_get_node_by_ip - cluster/nodemanager.c: o2nm_node_put - cluster/nodemanager.c: o2nm_node_get -

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

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

This patch removes disk heartbeat's modularity which makes it the default. Without this patch, userspace changes are required. This patch is not intended for permanent application, just to make it easier for users not interested in testing the userspace clustering implementation to use ocfs2. In order to switch to user clustering, use "o2cb offline" to shut down the cluster,

Remove some pointless conditionals before kfree(). Signed-off-by: Wei Yongjun <yjwei at cn.fujitsu.com> --- fs/ocfs2/alloc.c | 3 +-- fs/ocfs2/cluster/heartbeat.c | 6 ++---- fs/ocfs2/cluster/tcp.c | 6 ++---- fs/ocfs2/dlm/dlmdomain.c | 3 +-- fs/ocfs2/dlm/dlmrecovery.c | 6 ++---- fs/ocfs2/extent_map.c | 3 +-- fs/ocfs2/journal.c

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

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

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