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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* (C) Copyright IBM Corporation 2022
* Author: Martin Ohmacht <mohmacht@us.ibm.com>
*
* Based on the file ceph/src/common/blkdev.cc
* Copyright (c) 2015 Hewlett-Packard Development Company, L.P.
*
* And also based on the file src/erasure-code/clay/ErasureCodeClay.h
* Copyright (C) 2018 Indian Institute of Science <office.ece@iisc.ac.in>
*
* Author: Myna Vajha <mynaramana@gmail.com>
*
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#ifndef CEPH_EXT_BLK_DEV_VDO_H
#define CEPH_EXT_BLK_DEV_VDO_H
#include "extblkdev/ExtBlkDevInterface.h"
#include "include/compat.h"
class ExtBlkDevVdo final : public ceph::ExtBlkDevInterface
{
int vdo_dir_fd = -1; ///< fd for vdo sysfs directory
std::string name; // name of the underlying vdo device
std::string logdevname; // name of the top level logical device
CephContext *cct;
public:
explicit ExtBlkDevVdo(CephContext *cct) : cct(cct) {}
~ExtBlkDevVdo(){
if(vdo_dir_fd >= 0)
VOID_TEMP_FAILURE_RETRY(::close(vdo_dir_fd));
}
int _get_vdo_stats_handle(const std::string& devname);
int get_vdo_stats_handle();
int64_t get_vdo_stat(const char *property);
virtual int init(const std::string& logdevname);
virtual const std::string& get_devname() const {return name;}
virtual int get_state(ceph::ExtBlkDevState& state);
virtual int collect_metadata(const std::string& prefix, std::map<std::string,std::string> *pm);
};
#endif
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