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2007-02-07ocfs2: introduce sc->sc_send_lock to protect outbound outbound messagesZhen Wei
When there is a lot of multithreaded I/O usage, two threads can collide while sending out a message to the other nodes. This is due to the lack of locking between threads while sending out the messages. When a connected TCP send(), sendto(), or sendmsg() arrives in the Linux kernel, it eventually comes through tcp_sendmsg(). tcp_sendmsg() protects itself by acquiring a lock at invocation by calling lock_sock(). tcp_sendmsg() then loops over the buffers in the iovec, allocating associated sk_buff's and cache pages for use in the actual send. As it does so, it pushes the data out to tcp for actual transmission. However, if one of those allocation fails (because a large number of large sends is being processed, for example), it must wait for memory to become available. It does so by jumping to wait_for_sndbuf or wait_for_memory, both of which eventually cause a call to sk_stream_wait_memory(). sk_stream_wait_memory() contains a code path that calls sk_wait_event(). Finally, sk_wait_event() contains the call to release_sock(). The following patch adds a lock to the socket container in order to properly serialize outbound requests. From: Zhen Wei <zwei@novell.com> Acked-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2_dlm: disallow a domain join if node maps mismatchSrinivas Eeda
There is a small window where a joining node may not see the node(s) that just died but are still part of the domain. To fix this, we must disallow join requests if the joining node has a different node map. A new field node_map is added to dlm_query_join_request to send the current nodes nodemap along with join request. On the receiving end the nodes that are part of the cluster verifies if this new node sees all the nodes that are still part of the cluster. They disallow the join if the maps mismatch. Signed-off-by: Srinivas Eeda <srinivas.eeda@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2: Binds listener to the configured ip addressSunil Mushran
This patch binds the o2net listener to the configured ip address instead of INADDR_ANY for security. Fixes oss.oracle.com bugzilla#814. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2: Added post handler callable function in o2net message handlerKurt Hackel
Currently o2net allows one handler function per message type. This patch adds the ability to call another function to be called after the handler has returned the message to the other node. Handlers are now given the option of returning a context (in the form of a void **) which will be passed back into the post message handler function. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-02-07ocfs2_dlm: fix cluster-wide refcounting of lock resourcesKurt Hackel
This was previously broken and migration of some locks had to be temporarily disabled. We use a new (and backward-incompatible) set of network messages to account for all references to a lock resources held across the cluster. once these are all freed, the master node may then free the lock resource memory once its local references are dropped. Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-12-28ocfs2: export heartbeat thread pid via configfsZhen Wei
The patch allows the ocfs2 heartbeat thread to prioritize I/O which may help cut down on spurious fencing. Most of this will be in the tools - we can have a pid configfs attribute and let userspace (ocfs2_hb_ctl) calls the ioprio_set syscall after starting heartbeat, but only cfq scheduler supports I/O priorities now. Signed-off-by: Zhen Wei <zwei@novell.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-12-13[PATCH] Fix numerous kcalloc() calls, convert to kzalloc()Robert P. J. Day
All kcalloc() calls of the form "kcalloc(1,...)" are converted to the equivalent kzalloc() calls, and a few kcalloc() calls with the incorrect ordering of the first two arguments are fixed. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Cc: Jeff Garzik <jeff@garzik.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Adam Belay <ambx1@neo.rr.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Greg KH <greg@kroah.com> Cc: Mark Fasheh <mark.fasheh@oracle.com> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-11[patch 3/3] OCFS2 Configurable timeouts - Protocol changesAndrew Beekhof
Modify the OCFS2 handshake to ensure essential timeouts are configured identically on all nodes. Only allow changes when there are no connected peers Improves the logic in o2net_advance_rx() which broke now that sizeof(struct o2net_handshake) is greater than sizeof(struct o2net_msg) Included is the field for userspace-heartbeat timeout to avoid the need for further protocol changes. Uses a global spinlock to ensure the decisions to update configfs entries are made on the correct value. The region covered by the spinlock when incrementing the counter is much larger as this is the more critical case. Small cleanup contributed by Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Beekhof <abeekhof@suse.de> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-12-07[patch 2/3] OCFS2 Configurable timeoutsJeff Mahoney
Allow configuration of OCFS2 timeouts from userspace via configfs Signed-off-by: Andrew Beekhof <abeekhof@suse.de> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-12-07[patch 1/3] OCFS2 - Expose struct o2nm_clusterAndrew Beekhof
Subsequent patches (namely userspace heartbeat and configurable timeouts) require access to the o2nm_cluster struct. This patch does the necessary shuffling. Signed-off-by: Andrew Beekhof <abeekhof@suse.de> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-11-22WorkStruct: make allyesconfigDavid Howells
Fix up for make allyesconfig. Signed-Off-By: David Howells <dhowells@redhat.com>
2006-10-20ocfs2: delete redundant memcmp()Akinobu Mita
This patch deletes redundant memcmp() while looking up in rb tree. Signed-off-by: Akinbou Mita <akinobu.mita@gmail.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-09-24ocfs2: Remove i_generation from inode lock namesMark Fasheh
OCFS2 puts inode meta data in the "lock value block" provided by the DLM. Typically, i_generation is encoded in the lock name so that a deleted inode on and a new one in the same block don't share the same lvb. Unfortunately, that scheme means that the read in ocfs2_read_locked_inode() is potentially thrown away as soon as the meta data lock is taken - we cannot encode the lock name without first knowing i_generation, which requires a disk read. This patch encodes i_generation in the inode meta data lvb, and removes the value from the inode meta data lock name. This way, the read can be covered by a lock, and at the same time we can distinguish between an up to date and a stale LVB. This will help cold-cache stat(2) performance in particular. Since this patch changes the protocol version, we take the opportunity to do a minor re-organization of two of the LVB fields. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-09-24ocfs2: Hook rest of the file system into dentry locking APIMark Fasheh
Actually replace the vote calls with the new dentry operations. Make any necessary adjustments to get the scheme to work. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-09-20ocfs2: Fix heartbeat sector calculationMathieu Avila
This fixes things for devices which set max_sectors to 8. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-06-29ocfs2: Cleanup message printsSunil Mushran
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-06-29ocfs2: warn the user on a dead timeout mismatchMark Fasheh
Print a warning to the user when a node with a different dead count joins the region. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-06-29ocfs2: Compile-time disabling of ocfs2 debugging output.Joel Becker
Give gcc the chance to compile out the debug logging code in ocfs2. This saves some size at the expense of being able to debug the code. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-06-27[PATCH] spin/rwlock init cleanupsIngo Molnar
locking init cleanups: - convert " = SPIN_LOCK_UNLOCKED" to spin_lock_init() or DEFINE_SPINLOCK() - convert rwlocks in a similar manner this patch was generated automatically. Motivation: - cleanliness - lockdep needs control of lock initialization, which the open-coded variants do not give - it's also useful for -rt and for lock debugging in general Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-04-07ocfs2: Better I/O error handling in heartbeatMark Fasheh
Propagate errors received in o2hb_bio_end_io() back to the heartbeat thread so it can skip re-arming the timer. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-03-24ocfs2: finally remove MLF* macrosMark Fasheh
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-03-24ocfs2: don't use MLF* in cluster/ filesMark Fasheh
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-03-01[PATCH] ocfs2: added source addr to bind() in o2net_start_connect()Sunil Mushran
to prevent confusion when a virtual ip is created on the same interface Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-03-01ocfs2: Set .owner on masklog sysfs attributes.Joel Becker
Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-03-01[PATCH] ocfs2: complete failure recovery for nodemanager initJeff Mahoney
This patch finishes cleaning up the node manager allocations if it fails to initialize. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-03-01[PATCH] ocfs2: remove non existing function prototypesMark Fasheh
Remove some prototypes from tcp.h for functions which have long been gone. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-03-01[PATCH] ocfs2: fix -Wformat warnings when building UML on x86-64Jeff Mahoney
The check to determine which format string is appopriate for u64 and friends works in most cases, but UML on x86_64 doesn't define CONFIG_X86_64, so it results in screen fulls of compile-time warnings. This patch fixes it to handle that case. fs/ocfs2/cluster/masklog.h | 2 +- 1 files changed, 1 insertion(+), 1 deletion(-) Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-02-03[PATCH] ocfs2: fix compile warningsMark Fasheh
Fix a couple of compile warnings found when compiling on a ppc64 build box. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-01-09[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_semJes Sorensen
This patch converts the inode semaphore to a mutex. I have tested it on XFS and compiled as much as one can consider on an ia64. Anyway your luck with it might be different. Modified-by: Ingo Molnar <mingo@elte.hu> (finished the conversion) Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2006-01-08[PATCH] remove gcc-2 checksAndrew Morton
Remove various things which were checking for gcc-1.x and gcc-2.x compilers. From: Adrian Bunk <bunk@stusta.de> Some documentation updates and removes some code paths for gcc < 3.2. Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-03[PATCH] This patch contains the following cleanups:Adrian Bunk
- cluster/sys.c: make needlessly global code static - dlm/: "extern" declarations for variables belong into header files (and in this case, they are already in dlmdomain.h) Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-01-03[PATCH] OCFS2: The Second Oracle Cluster FilesystemZach Brown
Node messaging via tcp. Used by the dlm and the file system for point to point communication between nodes. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
2006-01-03[PATCH] OCFS2: The Second Oracle Cluster FilesystemMark Fasheh
Disk based heartbeat. Configured and started from userspace, the kernel component handles I/O submission and event generation via callback mechanism. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
2006-01-03[PATCH] OCFS2: The Second Oracle Cluster FilesystemKurt Hackel
A simple node information service, filled and updated from userspace. The rest of the stack queries this service for simple node information. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
2006-01-03[PATCH] OCFS2: The Second Oracle Cluster FilesystemZach Brown
Very simple printk wrapper which adds the ability to enable various sets of debug messages at run-time. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>