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lvm2/lib/activate/fs.h
Zdenek Kabelac 937a21f0d2 Speedup consequent activation calls
Stop calling fs_unlock() from lv_de/activate().
Start using internal lvm fs cookie for dm_tree.
Stop directly calling dm_udev_wait() and
dm_tree_set/get_cookie() from activate code -
it's now called through fs_unlock() function.

Add lvm_do_fs_unlock()

Call fs_unlock() when unlocking vg where implicit unlock solves the
problem also for cluster - thus no extra command for clustering
environment is required - only lvm_do_fs_unlock() function is added
to call lvm's fs_unlock() while holding lvm_lock mutex in clvmd.

Add fs_unlock() also to set_lv() so the command waits until devices
are ready for regular open (i.e. wiping its begining).

Move fs_unlock() prototype to activation.h to keep fs.h private
in lib/activate dir and not expose other functions from this header.
2011-01-10 14:02:30 +00:00

37 lines
1.2 KiB
C

/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License v.2.1.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _LVM_FS_H
#define _LVM_FS_H
#include "metadata.h"
/*
* These calls, private to the activate unit, set
* up the volume group directory in /dev and the
* symbolic links to the dm device.
*/
int fs_add_lv(const struct logical_volume *lv, const char *dev);
int fs_del_lv(const struct logical_volume *lv);
int fs_del_lv_byname(const char *dev_dir, const char *vg_name,
const char *lv_name, int check_udev);
int fs_rename_lv(struct logical_volume *lv, const char *dev,
const char *old_vgname, const char *old_lvname);
/* void fs_unlock(void); moved to activate.h */
uint32_t fs_get_cookie(void);
void fs_set_cookie(uint32_t cookie);
#endif