mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-21 13:34:40 +03:00
8a843d0d97
Usable device filter is responsible for filtering out unusable DM devices.
The filter has 3 modes of operation:
- FILTER_MODE_NO_LVMETAD:
When this mode is used, we check DM device usability by looking:
- whether device is empty
- whether device is blocked
- whether device is suspended (only on devices/ignore_suspended_devices=1)
- whether device uses an error target
- whether device name/uuid is reserved
- FILTER_MODE_PRE_LVMETAD:
When this mode is used, we check DM device usability by looking:
- whether device is empty
- whether device is suspended (only on devices/ignore_suspended_devices=1)
- whether device uses an error target
- whether device name/uuid is reserved
- FILTER_MODE_POST_LVMETAD:
When this mode is used, we check DM device usability by looking:
- whether device is blocked
- whether device is suspended (only on devices/ignore_suspended_devices=1)
These modes will be used by subsequent patch to create different
instances of this filter, depending on lvmetad use.
53 lines
1.8 KiB
C
53 lines
1.8 KiB
C
/*
|
|
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
|
|
* Copyright (C) 2004 Luca Berra
|
|
* Copyright (C) 2004-2013 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_FILTER_H
|
|
#define _LVM_FILTER_H
|
|
|
|
#include "dev-cache.h"
|
|
#include "dev-type.h"
|
|
|
|
struct dev_filter *composite_filter_create(int n, struct dev_filter **filters);
|
|
struct dev_filter *lvm_type_filter_create(struct dev_types *dt);
|
|
struct dev_filter *md_filter_create(struct dev_types *dt);
|
|
struct dev_filter *mpath_filter_create(struct dev_types *dt);
|
|
struct dev_filter *partitioned_filter_create(struct dev_types *dt);
|
|
struct dev_filter *persistent_filter_create(struct dev_types *dt,
|
|
struct dev_filter *f,
|
|
const char *file);
|
|
struct dev_filter *sysfs_filter_create(void);
|
|
|
|
/*
|
|
* patterns must be an array of strings of the form:
|
|
* [ra]<sep><regex><sep>, eg,
|
|
* r/cdrom/ - reject cdroms
|
|
* a|loop/[0-4]| - accept loops 0 to 4
|
|
* r|.*| - reject everything else
|
|
*/
|
|
|
|
struct dev_filter *regex_filter_create(const struct dm_config_value *patterns);
|
|
|
|
typedef enum {
|
|
FILTER_MODE_NO_LVMETAD,
|
|
FILTER_MODE_PRE_LVMETAD,
|
|
FILTER_MODE_POST_LVMETAD
|
|
} filter_mode_t;
|
|
struct dev_filter *usable_filter_create(struct dev_types *dt, filter_mode_t mode);
|
|
|
|
int persistent_filter_load(struct dev_filter *f, struct dm_config_tree **cft_out);
|
|
|
|
#endif /* _LVM_FILTER_H */
|