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If dlm_controld (the userspace daemon that controls the setup and recovery of the dlm) fails, the kernel should shut down the lockspaces in the kernel rather than leaving them running. This is detected by having dlm_controld hold a misc device open while running, and if the kernel detects a close while the daemon is still needed, it stops the lockspaces in the kernel. Knowing that the userspace daemon isn't running also allows the lockspace create/remove routines to avoid waiting on the daemon for join/leave operations. Signed-off-by: David Teigland <teigland@redhat.com>
27 lines
1.0 KiB
C
27 lines
1.0 KiB
C
/******************************************************************************
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*******************************************************************************
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**
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** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
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**
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** This copyrighted material is made available to anyone wishing to use,
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** modify, copy, or redistribute it subject to the terms and conditions
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** of the GNU General Public License v.2.
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**
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*******************************************************************************
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******************************************************************************/
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#ifndef __LOCKSPACE_DOT_H__
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#define __LOCKSPACE_DOT_H__
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int dlm_lockspace_init(void);
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void dlm_lockspace_exit(void);
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struct dlm_ls *dlm_find_lockspace_global(uint32_t id);
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struct dlm_ls *dlm_find_lockspace_local(void *id);
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struct dlm_ls *dlm_find_lockspace_device(int minor);
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void dlm_put_lockspace(struct dlm_ls *ls);
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void dlm_stop_lockspaces(void);
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#endif /* __LOCKSPACE_DOT_H__ */
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