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fa6dca9f28
Current code, when need to ensure that volume is not active on remote node, it need to try to exclusive activate volume. Patch adds simple clvmd command which queries all nodes for lock for given resource. The lock type is returned in reply in text. (But code currently uses CR and EX modes only.)
40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
/*
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* Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* Functions in lvm-functions.c */
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#ifndef _LVM_FUNCTIONS_H
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#define _LVM_FUNCTIONS_H
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extern int pre_lock_lv(unsigned char lock_cmd, unsigned char lock_flags,
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char *resource);
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extern int do_lock_lv(unsigned char lock_cmd, unsigned char lock_flags,
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char *resource);
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extern const char *do_lock_query(char *resource);
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extern int post_lock_lv(unsigned char lock_cmd, unsigned char lock_flags,
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char *resource);
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extern int do_check_lvm1(const char *vgname);
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extern int do_refresh_cache(void);
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extern int init_lvm(int using_gulm);
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extern void init_lvhash(void);
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extern void destroy_lvhash(void);
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extern void lvm_do_backup(const char *vgname);
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extern int hold_unlock(char *resource);
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extern int hold_lock(char *resource, int mode, int flags);
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extern char *get_last_lvm_error(void);
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extern void drop_metadata(const char *vgname);
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#endif
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