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62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
/*
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* Copyright (C) 2002 Sistina Software (UK) Limited.
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*
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* This file is released under the LGPL.
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*/
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#ifndef _LVM_LL_ACTIVATE_H
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#define _LVM_LL_ACTIVATE_H
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#include "metadata.h"
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#include <libdevmapper.h>
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/*
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* Prepares a new dm_task.
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*/
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struct dm_task *setup_dm_task(const char *name, int task);
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/*
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* Query functions. 'name' is the device node name in the
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* device-mapper dir.
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*/
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int device_info(const char *name, struct dm_info *info);
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int device_active(const char *name);
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int device_suspended(const char *name);
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int device_open_count(const char *name);
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/*
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* Functions to manipulate an already active device.
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*/
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int device_deactivate(const char *name);
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int device_suspend(const char *name);
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int device_resume(const char *name);
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/*
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* Creates a device with a mapping table as specified by the lv.
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*/
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int device_create_lv(const char *name, struct logical_volume *lv, int minor);
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int device_reload_lv(const char *name, struct logical_volume *lv);
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/*
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* Layers the origin device above an already active 'real'
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* device.
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*/
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int device_create_origin(struct logical_volume *lv,
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const char *real, int minor);
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/*
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* Creates a snapshot device for a given origin and exception
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* storage area.
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*/
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int device_create_snapshot(struct logical_volume *lv,
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const char *origin, const char *cow_device,
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int minor);
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#endif
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