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26 lines
951 B
C++
26 lines
951 B
C++
#pragma once
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#include <optional>
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#include <Core/Types.h>
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#include <Disks/IDisk.h>
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namespace DB
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{
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/** Creates a local (at the same mount point) backup (snapshot) directory.
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*
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* In the specified destination directory, it creates a hard links on all source-directory files
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* and in all nested directories, with saving (creating) all relative paths;
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* and also `chown`, removing the write permission.
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*
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* This protects data from accidental deletion or modification,
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* and is intended to be used as a simple means of protection against a human or program error,
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* but not from a hardware failure.
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*
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* If max_level is specified, than only files which depth relative source_path less or equal max_level will be copied.
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* So, if max_level=0 than only direct file child are copied.
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*/
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void localBackup(const DiskPtr & disk, const String & source_path, const String & destination_path, std::optional<size_t> max_level = {});
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}
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