Goldwyn Rodrigues b97e92574c Use separate bitmaps for each nodes in the cluster ... On-disk format: 0 4k 8k 12k ------------------------------------------------------------------- | idle | md super | bm super [0] + bits | | bm bits[0, contd] | bm super[1] + bits | bm bits[1, contd] | | bm super[2] + bits | bm bits [2, contd] | bm super[3] + bits | | bm bits [3, contd] | | | Bitmap super has a field nodes, which defines the maximum number of nodes the device can use. While reading the bitmap super, if the cluster finds out that the number of nodes is > 0: 1. Requests the md-cluster module. 2. Calls md_cluster_ops->join(), which sets up clustering such as joining DLM lockspace. Since the first time, the first bitmap is read. After the call to the cluster_setup, the bitmap offset is adjusted and the superblock is re-read. This also ensures the bitmap is read the bitmap lock (when bitmap lock is introduced in later patches) Questions: 1. cluster name is repeated in all bitmap supers. Is that okay? Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>		2015-02-23 07:30:11 -06:00
..
bcache	md/bcache: use generic io stats accounting functions to simplify io stat accounting	2014-11-24 08:05:12 -07:00
persistent-data	- Significant dm-crypt CPU scalability performance improvements thanks	2015-02-21 13:28:45 -08:00
Kconfig	Create a separate module for clustering support	2015-02-23 07:28:42 -06:00
Makefile	Create a separate module for clustering support	2015-02-23 07:28:42 -06:00
bitmap.c	Use separate bitmaps for each nodes in the cluster	2015-02-23 07:30:11 -06:00
bitmap.h	Use separate bitmaps for each nodes in the cluster	2015-02-23 07:30:11 -06:00
dm-bio-prison.c	dm bio prison: introduce support for locking ranges of blocks	2014-11-10 15:25:30 -05:00
dm-bio-prison.h	dm bio prison: introduce support for locking ranges of blocks	2014-11-10 15:25:30 -05:00
dm-bio-record.h	dm: Refactor for new bio cloning/splitting	2013-11-23 22:33:55 -08:00
dm-bufio.c	dm bufio: fix time comparison to use time_after_eq()	2015-02-09 13:06:48 -05:00
dm-bufio.h	dm snapshot: use dm-bufio prefetch	2014-01-14 23:23:03 -05:00
dm-builtin.c	dm sysfs: fix a module unload race	2014-01-14 23:23:04 -05:00
dm-cache-block-types.h	dm cache: revert "remove remainder of distinct discard block size"	2014-11-10 15:25:30 -05:00
dm-cache-metadata.c	dm cache: fix missing ERR_PTR returns and handling	2015-01-28 09:59:20 -05:00
dm-cache-metadata.h	dm cache: revert "remove remainder of distinct discard block size"	2014-11-10 15:25:30 -05:00
dm-cache-policy-cleaner.c	dm cache: policy change version from string to integer set	2013-03-20 17:21:27 +00:00
dm-cache-policy-internal.h	dm cache: add remove_cblock method to policy interface	2013-11-11 11:37:50 -05:00
dm-cache-policy-mq.c	dm cache policy mq: simplify ability to promote sequential IO to the cache	2014-11-10 15:25:30 -05:00
dm-cache-policy.c	dm cache: add policy name to status output	2014-01-16 13:44:11 -05:00
dm-cache-policy.h	dm cache: add policy name to status output	2014-01-16 13:44:11 -05:00
dm-cache-target.c	- Most significant change this cycle is request-based DM now supports	2015-02-12 16:36:31 -08:00
dm-crypt.c	dm crypt: sort writes	2015-02-16 11:11:15 -05:00
dm-delay.c	Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block	2014-01-30 11:19:05 -08:00
dm-era-target.c	dm era: check for a non-NULL metadata object before closing it	2014-06-03 13:44:08 -04:00
dm-exception-store.c	dm: replace simple_strtoul	2012-07-27 15:07:59 +01:00
dm-exception-store.h	…
dm-flakey.c	block: Abstract out bvec iterator	2013-11-23 22:33:47 -08:00
dm-io.c	dm io: reject unsupported DISCARD requests with EOPNOTSUPP	2015-02-13 19:51:09 -05:00
dm-ioctl.c	dm ioctl: fix stale comment above dm_get_inactive_table()	2015-02-09 13:06:48 -05:00
dm-kcopyd.c	dm: stop using WQ_NON_REENTRANT	2013-08-23 09:02:13 -04:00
dm-linear.c	block: Abstract out bvec iterator	2013-11-23 22:33:47 -08:00
dm-log-userspace-base.c	dm: use time_in_range() and time_after()	2015-02-09 13:06:48 -05:00
dm-log-userspace-transfer.c	dm log userspace: fix memory leak in dm_ulog_tfr_init failure path	2014-10-05 20:03:38 -04:00
dm-log-userspace-transfer.h	…
dm-log.c	dm: use memweight()	2012-07-30 17:25:16 -07:00
dm-mpath.c	dm mpath: simplify failure path of dm_multipath_init()	2015-02-09 13:06:49 -05:00
dm-mpath.h	…
dm-path-selector.c	md: Add module.h to all files using it implicitly	2011-10-31 19:31:18 -04:00
dm-path-selector.h	…
dm-queue-length.c	dm: reject trailing characters in sccanf input	2012-03-28 18:41:26 +01:00
dm-raid.c	- Most significant change this cycle is request-based DM now supports	2015-02-12 16:36:31 -08:00
dm-raid1.c	dm mirror: do not degrade the mirror on discard error	2015-02-13 19:50:46 -05:00
dm-region-hash.c	block: Abstract out bvec iterator	2013-11-23 22:33:47 -08:00
dm-round-robin.c	dm: reject trailing characters in sccanf input	2012-03-28 18:41:26 +01:00
dm-service-time.c	dm: reject trailing characters in sccanf input	2012-03-28 18:41:26 +01:00
dm-snap-persistent.c	dm snapshot: remove unnecessary NULL checks before vfree() calls	2015-02-09 13:06:49 -05:00
dm-snap-transient.c	md: Add in export.h for files using EXPORT_SYMBOL	2011-10-31 19:31:19 -04:00
dm-snap.c	dm snapshot: fix a possible invalid memory access on unload	2015-02-18 09:41:54 -05:00
dm-stats.c	- Significant DM thin-provisioning performance improvements to meet	2014-12-08 21:10:03 -08:00
dm-stats.h	dm: add statistics support	2013-09-05 20:46:06 -04:00
dm-stripe.c	dm stripe: fix potential for leak in stripe_ctr error path	2014-10-10 22:05:18 -04:00
dm-switch.c	dm switch: efficiently support repetitive patterns	2014-08-01 12:30:37 -04:00
dm-sysfs.c	dm sysfs: fix a module unload race	2014-01-14 23:23:04 -05:00
dm-table.c	dm: inherit QUEUE_FLAG_SG_GAPS flags from underlying queues	2015-02-11 10:25:46 -05:00
dm-target.c	dm: allocate requests in target when stacking on blk-mq devices	2015-02-09 13:06:47 -05:00
dm-thin-metadata.c	dm thin metadata: remove unused dm_pool_get_data_block_size()	2015-02-09 13:06:49 -05:00
dm-thin-metadata.h	dm thin metadata: remove unused dm_pool_get_data_block_size()	2015-02-09 13:06:49 -05:00
dm-thin.c	- Most significant change this cycle is request-based DM now supports	2015-02-12 16:36:31 -08:00
dm-uevent.c	md: Add in export.h for files using EXPORT_SYMBOL	2011-10-31 19:31:19 -04:00
dm-uevent.h	…
dm-verity.c	dm verity: fix biovecs hash calculation regression	2014-04-15 12:19:24 -04:00
dm-zero.c	dm crypt, dm zero: update author name following legal name change	2014-07-10 16:44:14 -04:00
dm.c	dm: fix a race condition in dm_get_md	2015-02-18 09:41:19 -05:00
dm.h	dm table: train hybrid target type detection to select blk-mq if appropriate	2015-02-09 13:06:47 -05:00
faulty.c	md: rename ->stop to ->free	2015-02-04 08:35:52 +11:00
linear.c	md: rename ->stop to ->free	2015-02-04 08:35:52 +11:00
linear.h	…
md-cluster.c	Use separate bitmaps for each nodes in the cluster	2015-02-23 07:30:11 -06:00
md-cluster.h	Add node recovery callbacks	2015-02-23 07:30:11 -06:00
md.c	Add node recovery callbacks	2015-02-23 07:30:11 -06:00
md.h	Add node recovery callbacks	2015-02-23 07:30:11 -06:00
multipath.c	md: rename ->stop to ->free	2015-02-04 08:35:52 +11:00
multipath.h	…
raid0.c	md: rename ->stop to ->free	2015-02-04 08:35:52 +11:00
raid0.h	md: add proper merge_bvec handling to RAID0 and Linear.	2012-03-19 12:46:39 +11:00
raid1.c	md/raid1: round up to bdev_logical_block_size in narrow_write_error	2015-02-16 14:49:26 +11:00
raid1.h	md: make ->congested robust against personality changes.	2015-02-04 08:35:52 +11:00
raid5.c	md/raid5: Fix livelock when array is both resyncing and degraded.	2015-02-18 11:35:14 +11:00
raid5.h	md: make ->congested robust against personality changes.	2015-02-04 08:35:52 +11:00
raid10.c	md/raid10: round up to bdev_logical_block_size in narrow_write_error.	2015-02-16 14:51:54 +11:00
raid10.h	md: make ->congested robust against personality changes.	2015-02-04 08:35:52 +11:00