+++ /dev/null
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-/*
- * Ceph - scalable distributed file system
- *
- * Copyright (C) 2016 Red Hat
- *
- * 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.
- *
- */
-
-#include "common/errno.h"
-#include "osdc/Striper.h"
-
-#include "PgFiles.h"
-
-
-#define dout_context g_ceph_context
-#define dout_subsys ceph_subsys_mds
-#undef dout_prefix
-#define dout_prefix *_dout << "pgeffects." << __func__ << ": "
-
-int PgFiles::init()
-{
- int r = ceph_create_with_context(&cmount, g_ceph_context);
- if (r != 0) {
- return r;
- }
-
- return ceph_init(cmount);
-}
-
-PgFiles::PgFiles(Objecter *o, std::set<pg_t> pgs_)
- : objecter(o), pgs(pgs_)
-{
- for (const auto &i : pgs) {
- pools.insert(i.m_pool);
- }
-}
-
-PgFiles::~PgFiles()
-{
- ceph_release(cmount);
-}
-
-void PgFiles::hit_dir(std::string const &path)
-{
- dout(10) << "entering " << path << dendl;
-
- ceph_dir_result *dr = nullptr;
- int r = ceph_opendir(cmount, path.c_str(), &dr);
- if (r != 0) {
- derr << "Failed to open path: " << cpp_strerror(r) << dendl;
- return;
- }
-
- struct dirent de;
- while((r = ceph_readdir_r(cmount, dr, &de)) != 0) {
- if (r < 0) {
- derr << "Error reading path " << path << ": " << cpp_strerror(r)
- << dendl;
- ceph_closedir(cmount, dr); // best effort, ignore r
- return;
- }
-
- if (std::string(de.d_name) == "." || std::string(de.d_name) == "..") {
- continue;
- }
-
- struct ceph_statx stx;
- std::string de_path = (path + std::string("/") + de.d_name);
- r = ceph_statx(cmount, de_path.c_str(), &stx,
- CEPH_STATX_INO|CEPH_STATX_SIZE, 0);
- if (r != 0) {
- derr << "Failed to stat path " << de_path << ": "
- << cpp_strerror(r) << dendl;
- // Don't hold up the whole process for one bad inode
- continue;
- }
-
- if (S_ISREG(stx.stx_mode)) {
- hit_file(de_path, stx);
- } else if (S_ISDIR(stx.stx_mode)) {
- hit_dir(de_path);
- } else {
- dout(20) << "Skipping non reg/dir file: " << de_path << dendl;
- }
- }
-
- r = ceph_closedir(cmount, dr);
- if (r != 0) {
- derr << "Error closing path " << path << ": " << cpp_strerror(r) << dendl;
- return;
- }
-}
-
-void PgFiles::hit_file(std::string const &path, const struct ceph_statx &stx)
-{
- assert(S_ISREG(stx.stx_mode));
-
- dout(20) << "Hitting file '" << path << "'" << dendl;
-
- int l_stripe_unit = 0;
- int l_stripe_count = 0;
- int l_object_size = 0;
- int l_pool_id = 0;
- int r = ceph_get_path_layout(cmount, path.c_str(), &l_stripe_unit,
- &l_stripe_count, &l_object_size,
- &l_pool_id);
- if (r != 0) {
- derr << "Error reading layout on " << path << ": " << cpp_strerror(r)
- << dendl;
- return;
- }
-
- struct file_layout_t layout;
- layout.stripe_unit = l_stripe_unit;
- layout.stripe_count = l_stripe_count;
- layout.object_size = l_object_size;
- layout.pool_id = l_pool_id;
-
- // Avoid calculating PG if the layout targeted a completely different pool
- if (pools.count(layout.pool_id) == 0) {
- dout(20) << "Fast check missed: pool " << layout.pool_id << " not in "
- "target set" << dendl;
- return;
- }
-
- auto num_objects = Striper::get_num_objects(layout, stx.stx_size);
-
- for (uint64_t i = 0; i < num_objects; ++i) {
- char buf[32];
- snprintf(buf, sizeof(buf), "%llx.%08llx", (long long unsigned)stx.stx_ino,
- (long long unsigned int)i);
- dout(20) << " object " << std::string(buf) << dendl;
-
- pg_t target;
- object_t oid;
- object_locator_t loc;
- loc.pool = layout.pool_id;
- loc.key = std::string(buf);
-
- unsigned pg_num_mask = 0;
- unsigned pg_num = 0;
-
- int r = 0;
- objecter->with_osdmap([&r, oid, loc, &target, &pg_num_mask, &pg_num]
- (const OSDMap &osd_map) {
- r = osd_map.object_locator_to_pg(oid, loc, target);
- if (r == 0) {
- auto pool = osd_map.get_pg_pool(loc.pool);
- pg_num_mask = pool->get_pg_num_mask();
- pg_num = pool->get_pg_num();
- }
- });
- if (r != 0) {
- // Can happen if layout pointed to pool not in osdmap, for example
- continue;
- }
-
- target.m_seed = ceph_stable_mod(target.ps(), pg_num, pg_num_mask);
-
- dout(20) << " target " << target << dendl;
-
- if (pgs.count(target)) {
- std::cout << path << std::endl;
- return;
- }
- }
-
-}
-
-int PgFiles::scan_path(std::string const &path)
-{
- int r = ceph_mount(cmount, "/");
- if (r != 0) {
- derr << "Failed to mount: " << cpp_strerror(r) << dendl;
- return r;
- }
-
- hit_dir(path);
-
- r = ceph_unmount(cmount);
- if (r != 0) {
- derr << "Failed to unmount: " << cpp_strerror(r) << dendl;
- return r;
- }
-
- return r;
-}
-
Code Review / stor4nfv.git / blobdiff