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| author | Goldwyn Rodrigues <rgoldwyn@suse.com> | 2014-03-07 11:21:15 -0600 |
|---|---|---|
| committer | Goldwyn Rodrigues <rgoldwyn@suse.com> | 2015-02-23 07:28:42 -0600 |
| commit | 8e854e9cfd1cc3837b4bd96643d5174a72d9f741 (patch) | |
| tree | 9530b9ccba292e172918faf4a80b2cc55cab6b11 /drivers | |
| parent | 183bdf5106af069a774146c4f910a80ad1f57485 (diff) | |
| download | lwn-8e854e9cfd1cc3837b4bd96643d5174a72d9f741.tar.gz lwn-8e854e9cfd1cc3837b4bd96643d5174a72d9f741.zip | |
Create a separate module for clustering support
Tagged as EXPERIMENTAL for now.
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/md/Kconfig | 16 | ||||
| -rw-r--r-- | drivers/md/Makefile | 1 | ||||
| -rw-r--r-- | drivers/md/md-cluster.c | 28 |
3 files changed, 45 insertions, 0 deletions
diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig index 63e05e32b462..eed1fec2d97b 100644 --- a/drivers/md/Kconfig +++ b/drivers/md/Kconfig @@ -175,6 +175,22 @@ config MD_FAULTY In unsure, say N. + +config MD_CLUSTER + tristate "Cluster Support for MD (EXPERIMENTAL)" + depends on BLK_DEV_MD + depends on DLM + default n + ---help--- + Clustering support for MD devices. This enables locking and + synchronization across multiple systems on the cluster, so all + nodes in the cluster can access the MD devices simultaneously. + + This brings the redundancy (and uptime) of RAID levels across the + nodes of the cluster. + + If unsure, say N. + source "drivers/md/bcache/Kconfig" config BLK_DEV_DM_BUILTIN diff --git a/drivers/md/Makefile b/drivers/md/Makefile index a2da532b1c2b..7ed86876f3b7 100644 --- a/drivers/md/Makefile +++ b/drivers/md/Makefile @@ -30,6 +30,7 @@ obj-$(CONFIG_MD_RAID10) += raid10.o obj-$(CONFIG_MD_RAID456) += raid456.o obj-$(CONFIG_MD_MULTIPATH) += multipath.o obj-$(CONFIG_MD_FAULTY) += faulty.o +obj-$(CONFIG_MD_CLUSTER) += md-cluster.o obj-$(CONFIG_BCACHE) += bcache/ obj-$(CONFIG_BLK_DEV_MD) += md-mod.o obj-$(CONFIG_BLK_DEV_DM) += dm-mod.o diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c new file mode 100644 index 000000000000..f377e71949c5 --- /dev/null +++ b/drivers/md/md-cluster.c @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2015, SUSE + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + */ + + +#include <linux/module.h> + +static int __init cluster_init(void) +{ + pr_warn("md-cluster: EXPERIMENTAL. Use with caution\n"); + pr_info("Registering Cluster MD functions\n"); + return 0; +} + +static void cluster_exit(void) +{ +} + +module_init(cluster_init); +module_exit(cluster_exit); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Clustering support for MD"); |