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GFS2: dlm based recovery coordination

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This new method of managing recovery is an alternative to
the previous approach of using the userland gfs_controld.

- use dlm slot numbers to assign journal id's
- use dlm recovery callbacks to initiate journal recovery
- use a dlm lock to determine the first node to mount fs
- use a dlm lock to track journals that need recovery

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
David Teigland 2012-01-09 17:18:05 -05:00 • committed by Steven Whitehouse
commit e0c2a9aa1e
10 changed files with 1098 additions and 42 deletions
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2
include/linux/gfs2_ondisk.h
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@ -22,6 +22,8 @@
#define GFS2_LIVE_LOCK 1
#define GFS2_TRANS_LOCK 2
#define GFS2_RENAME_LOCK 3
#define GFS2_CONTROL_LOCK 4
#define GFS2_MOUNTED_LOCK 5
/* Format numbers for various metadata types */