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02543bad1c
o Not sure if the code in dev_manager is really optimal, but it works.. will look at adjusting it a bit now. o I *think* it works right when one snapshot if full but others aren't, but I haven't really been able to test it because the full snapshot somehow resets itself and weird things start happening to the system...
43 lines
1.2 KiB
C
43 lines
1.2 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_DEV_MANAGER_H
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#define _LVM_DEV_MANAGER_H
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#include "metadata.h"
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#include <libdevmapper.h>
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struct dev_manager;
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/*
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* Constructor and destructor.
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*/
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struct dev_manager *dev_manager_create(const char *vg_name);
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void dev_manager_destroy(struct dev_manager *dm);
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/*
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* The device handler is responsible for creating all the layered
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* dm devices, and ensuring that all constraints are maintained
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* (eg, an origin is created before its snapshot, but is not
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* unsuspended until the snapshot is also created.)
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*/
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int dev_manager_info(struct dev_manager *dm, struct logical_volume *lv,
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struct dm_info *info);
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int dev_manager_get_snapshot_use(struct dev_manager *dm,
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struct logical_volume *lv, float *percent);
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int dev_manager_suspend(struct dev_manager *dm, struct logical_volume *lv);
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int dev_manager_activate(struct dev_manager *dm, struct logical_volume *lv);
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int dev_manager_deactivate(struct dev_manager *dm, struct logical_volume *lv);
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/*
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* Put the desired changes into effect.
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*/
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int dev_manager_execute(struct dev_manager *dm);
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#endif
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