Documentation/ABI/testing/sysfs-ocfs2

Source file repositories/reference/linux-study-clean/Documentation/ABI/testing/sysfs-ocfs2

File Facts

System
Linux kernel
Corpus path
Documentation/ABI/testing/sysfs-ocfs2
Extension
[no extension]
Size
3095 bytes
Lines
90
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: Documentation
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

What:		/sys/fs/ocfs2/
Date:		April 2008
Contact:	ocfs2-devel@lists.linux.dev
Description:
		The /sys/fs/ocfs2 directory contains knobs used by the
		ocfs2-tools to interact with the filesystem.

What:		/sys/fs/ocfs2/max_locking_protocol
Date:		April 2008
Contact:	ocfs2-devel@lists.linux.dev
Description:
		The /sys/fs/ocfs2/max_locking_protocol file displays version
		of ocfs2 locking supported by the filesystem.  This version
		covers how ocfs2 uses distributed locking between cluster
		nodes.

		The protocol version has a major and minor number.  Two
		cluster nodes can interoperate if they have an identical
		major number and an overlapping minor number - thus,
		a node with version 1.10 can interoperate with a node
		sporting version 1.8, as long as both use the 1.8 protocol.

		Reading from this file returns a single line, the major
		number and minor number joined by a period, eg "1.10".

		This file is read-only.  The value is compiled into the
		driver.

What:		/sys/fs/ocfs2/loaded_cluster_plugins
Date:		April 2008
Contact:	ocfs2-devel@lists.linux.dev
Description:
		The /sys/fs/ocfs2/loaded_cluster_plugins file describes
		the available plugins to support ocfs2 cluster operation.
		A cluster plugin is required to use ocfs2 in a cluster.
		There are currently two available plugins:

		* 'o2cb' - The classic o2cb cluster stack that ocfs2 has
			used since its inception.
		* 'user' - A plugin supporting userspace cluster software
			in conjunction with fs/dlm.

		Reading from this file returns the names of all loaded
		plugins, one per line.

		This file is read-only.  Its contents may change as
		plugins are loaded or removed.

What:		/sys/fs/ocfs2/active_cluster_plugin
Date:		April 2008
Contact:	ocfs2-devel@lists.linux.dev
Description:
		The /sys/fs/ocfs2/active_cluster_plugin displays which
		cluster plugin is currently in use by the filesystem.
		The active plugin will appear in the loaded_cluster_plugins
		file as well.  Only one plugin can be used at a time.

		Reading from this file returns the name of the active plugin
		on a single line.

		This file is read-only.  Which plugin is active depends on
		the cluster stack in use.  The contents may change
		when all filesystems are unmounted and the cluster stack
		is changed.

What:		/sys/fs/ocfs2/cluster_stack
Date:		April 2008
Contact:	ocfs2-devel@lists.linux.dev
Description:
		The /sys/fs/ocfs2/cluster_stack file contains the name

Annotation

Implementation Notes