+++ /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) 2017 Red Hat Ltd
- *
- * 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 "OSDMonitor.h"
-#include "PGMonitor.h"
-
-#include "FSCommands.h"
-#include "MDSMonitor.h"
-
-
-
-static const string EXPERIMENTAL_WARNING("Warning! This feature is experimental."
-"It may cause problems up to and including data loss."
-"Consult the documentation at ceph.com, and if unsure, do not proceed."
-"Add --yes-i-really-mean-it if you are certain.");
-
-
-
-class FlagSetHandler : public FileSystemCommandHandler
-{
- public:
- FlagSetHandler()
- : FileSystemCommandHandler("fs flag set")
- {
- }
-
- int handle(
- Monitor *mon,
- FSMap &fsmap,
- MonOpRequestRef op,
- map<string, cmd_vartype> &cmdmap,
- std::stringstream &ss) override
- {
- string flag_name;
- cmd_getval(g_ceph_context, cmdmap, "flag_name", flag_name);
-
- string flag_val;
- cmd_getval(g_ceph_context, cmdmap, "val", flag_val);
-
- string confirm;
- cmd_getval(g_ceph_context, cmdmap, "confirm", confirm);
-
- if (flag_name == "enable_multiple") {
- bool flag_bool = false;
- int r = parse_bool(flag_val, &flag_bool, ss);
- if (r != 0) {
- ss << "Invalid boolean value '" << flag_val << "'";
- return r;
- }
-
- bool jewel = mon->get_quorum_con_features() & CEPH_FEATURE_SERVER_JEWEL;
- if (flag_bool && !jewel) {
- ss << "Multiple-filesystems are forbidden until all mons are updated";
- return -EINVAL;
- }
- if (confirm != "--yes-i-really-mean-it") {
- ss << EXPERIMENTAL_WARNING;
- }
- fsmap.set_enable_multiple(flag_bool);
- return 0;
- } else {
- ss << "Unknown flag '" << flag_name << "'";
- return -EINVAL;
- }
- }
-};
-
-class FsNewHandler : public FileSystemCommandHandler
-{
- public:
- FsNewHandler(Paxos *paxos)
- : FileSystemCommandHandler("fs new"), m_paxos(paxos)
- {
- }
-
- bool batched_propose() override {
- return true;
- }
-
- int handle(
- Monitor *mon,
- FSMap &fsmap,
- MonOpRequestRef op,
- map<string, cmd_vartype> &cmdmap,
- std::stringstream &ss) override
- {
- assert(m_paxos->is_plugged());
-
- string metadata_name;
- cmd_getval(g_ceph_context, cmdmap, "metadata", metadata_name);
- int64_t metadata = mon->osdmon()->osdmap.lookup_pg_pool_name(metadata_name);
- if (metadata < 0) {
- ss << "pool '" << metadata_name << "' does not exist";
- return -ENOENT;
- }
-
- string force_str;
- cmd_getval(g_ceph_context,cmdmap, "force", force_str);
- bool force = (force_str == "--force");
- const pool_stat_t *stat = mon->pgservice->get_pool_stat(metadata);
- if (stat) {
- int64_t metadata_num_objects = stat->stats.sum.num_objects;
- if (!force && metadata_num_objects > 0) {
- ss << "pool '" << metadata_name
- << "' already contains some objects. Use an empty pool instead.";
- return -EINVAL;
- }
- }
-
- string data_name;
- cmd_getval(g_ceph_context, cmdmap, "data", data_name);
- int64_t data = mon->osdmon()->osdmap.lookup_pg_pool_name(data_name);
- if (data < 0) {
- ss << "pool '" << data_name << "' does not exist";
- return -ENOENT;
- }
- if (data == 0) {
- ss << "pool '" << data_name << "' has id 0, which CephFS does not allow. Use another pool or recreate it to get a non-zero pool id.";
- return -EINVAL;
- }
-
- string fs_name;
- cmd_getval(g_ceph_context, cmdmap, "fs_name", fs_name);
- if (fs_name.empty()) {
- // Ensure fs name is not empty so that we can implement
- // commmands that refer to FS by name in future.
- ss << "Filesystem name may not be empty";
- return -EINVAL;
- }
-
- if (fsmap.get_filesystem(fs_name)) {
- auto fs = fsmap.get_filesystem(fs_name);
- if (*(fs->mds_map.get_data_pools().begin()) == data
- && fs->mds_map.get_metadata_pool() == metadata) {
- // Identical FS created already, this is a no-op
- ss << "filesystem '" << fs_name << "' already exists";
- return 0;
- } else {
- ss << "filesystem already exists with name '" << fs_name << "'";
- return -EINVAL;
- }
- }
-
- if (fsmap.filesystem_count() > 0
- && !fsmap.get_enable_multiple()) {
- ss << "Creation of multiple filesystems is disabled. To enable "
- "this experimental feature, use 'ceph fs flag set enable_multiple "
- "true'";
- return -EINVAL;
- }
-
- for (auto fs : fsmap.get_filesystems()) {
- const std::vector<int64_t> &data_pools = fs->mds_map.get_data_pools();
- string sure;
- if ((std::find(data_pools.begin(), data_pools.end(), data) != data_pools.end()
- || fs->mds_map.get_metadata_pool() == metadata)
- && ((!cmd_getval(g_ceph_context, cmdmap, "sure", sure)
- || sure != "--allow-dangerous-metadata-overlay"))) {
- ss << "Filesystem '" << fs_name
- << "' is already using one of the specified RADOS pools. This should ONLY be done in emergencies and after careful reading of the documentation. Pass --allow-dangerous-metadata-overlay to permit this.";
- return -EEXIST;
- }
- }
-
- pg_pool_t const *data_pool = mon->osdmon()->osdmap.get_pg_pool(data);
- assert(data_pool != NULL); // Checked it existed above
- pg_pool_t const *metadata_pool = mon->osdmon()->osdmap.get_pg_pool(metadata);
- assert(metadata_pool != NULL); // Checked it existed above
-
- int r = _check_pool(mon->osdmon()->osdmap, data, false, force, &ss);
- if (r < 0) {
- return r;
- }
-
- r = _check_pool(mon->osdmon()->osdmap, metadata, true, force, &ss);
- if (r < 0) {
- return r;
- }
-
- // if we're running as luminous, we have to set the pool application metadata
- if (mon->osdmon()->osdmap.require_osd_release >= CEPH_RELEASE_LUMINOUS ||
- mon->osdmon()->pending_inc.new_require_osd_release >= CEPH_RELEASE_LUMINOUS) {
- if (!mon->osdmon()->is_writeable()) {
- // not allowed to write yet, so retry when we can
- mon->osdmon()->wait_for_writeable(op, new PaxosService::C_RetryMessage(mon->mdsmon(), op));
- return -EAGAIN;
- }
- mon->osdmon()->do_application_enable(data,
- pg_pool_t::APPLICATION_NAME_CEPHFS);
- mon->osdmon()->do_application_enable(metadata,
- pg_pool_t::APPLICATION_NAME_CEPHFS);
- mon->osdmon()->propose_pending();
- }
-
- // All checks passed, go ahead and create.
- fsmap.create_filesystem(fs_name, metadata, data,
- mon->get_quorum_con_features());
- ss << "new fs with metadata pool " << metadata << " and data pool " << data;
- return 0;
- }
-
-private:
- Paxos *m_paxos;
-};
-
-class SetHandler : public FileSystemCommandHandler
-{
-public:
- SetHandler()
- : FileSystemCommandHandler("fs set")
- {}
-
- int handle(
- Monitor *mon,
- FSMap &fsmap,
- MonOpRequestRef op,
- map<string, cmd_vartype> &cmdmap,
- std::stringstream &ss) override
- {
- std::string fs_name;
- if (!cmd_getval(g_ceph_context, cmdmap, "fs_name", fs_name) || fs_name.empty()) {
- ss << "Missing filesystem name";
- return -EINVAL;
- }
-
- auto fs = fsmap.get_filesystem(fs_name);
- if (fs == nullptr) {
- ss << "Not found: '" << fs_name << "'";
- return -ENOENT;
- }
-
- string var;
- if (!cmd_getval(g_ceph_context, cmdmap, "var", var) || var.empty()) {
- ss << "Invalid variable";
- return -EINVAL;
- }
- string val;
- string interr;
- int64_t n = 0;
- if (!cmd_getval(g_ceph_context, cmdmap, "val", val)) {
- return -EINVAL;
- }
- // we got a string. see if it contains an int.
- n = strict_strtoll(val.c_str(), 10, &interr);
- if (var == "max_mds") {
- // NOTE: see also "mds set_max_mds", which can modify the same field.
- if (interr.length()) {
- ss << interr;
- return -EINVAL;
- }
-
- if (n <= 0) {
- ss << "You must specify at least one MDS";
- return -EINVAL;
- }
-
- if (!fs->mds_map.allows_multimds() && n > fs->mds_map.get_max_mds() &&
- n > 1) {
- ss << "multi-MDS clusters are not enabled; set 'allow_multimds' to enable";
- return -EINVAL;
- }
- if (n > MAX_MDS) {
- ss << "may not have more than " << MAX_MDS << " MDS ranks";
- return -EINVAL;
- }
- fsmap.modify_filesystem(
- fs->fscid,
- [n](std::shared_ptr<Filesystem> fs)
- {
- fs->mds_map.set_max_mds(n);
- });
- } else if (var == "inline_data") {
- bool enable_inline = false;
- int r = parse_bool(val, &enable_inline, ss);
- if (r != 0) {
- return r;
- }
-
- if (enable_inline) {
- string confirm;
- if (!cmd_getval(g_ceph_context, cmdmap, "confirm", confirm) ||
- confirm != "--yes-i-really-mean-it") {
- ss << EXPERIMENTAL_WARNING;
- return -EPERM;
- }
- ss << "inline data enabled";
-
- fsmap.modify_filesystem(
- fs->fscid,
- [](std::shared_ptr<Filesystem> fs)
- {
- fs->mds_map.set_inline_data_enabled(true);
- });
-
- // Update `compat`
- CompatSet c = fsmap.get_compat();
- c.incompat.insert(MDS_FEATURE_INCOMPAT_INLINE);
- fsmap.update_compat(c);
- } else {
- ss << "inline data disabled";
- fsmap.modify_filesystem(
- fs->fscid,
- [](std::shared_ptr<Filesystem> fs)
- {
- fs->mds_map.set_inline_data_enabled(false);
- });
- }
- } else if (var == "balancer") {
- if (val.empty()) {
- ss << "unsetting the metadata load balancer";
- } else {
- ss << "setting the metadata load balancer to " << val;
- }
- fsmap.modify_filesystem(
- fs->fscid,
- [val](std::shared_ptr<Filesystem> fs)
- {
- fs->mds_map.set_balancer(val);
- });
- return true;
- } else if (var == "max_file_size") {
- if (interr.length()) {
- ss << var << " requires an integer value";
- return -EINVAL;
- }
- if (n < CEPH_MIN_STRIPE_UNIT) {
- ss << var << " must at least " << CEPH_MIN_STRIPE_UNIT;
- return -ERANGE;
- }
- fsmap.modify_filesystem(
- fs->fscid,
- [n](std::shared_ptr<Filesystem> fs)
- {
- fs->mds_map.set_max_filesize(n);
- });
- } else if (var == "allow_new_snaps") {
- bool enable_snaps = false;
- int r = parse_bool(val, &enable_snaps, ss);
- if (r != 0) {
- return r;
- }
-
- if (!enable_snaps) {
- fsmap.modify_filesystem(
- fs->fscid,
- [](std::shared_ptr<Filesystem> fs)
- {
- fs->mds_map.clear_snaps_allowed();
- });
- ss << "disabled new snapshots";
- } else {
- string confirm;
- if (!cmd_getval(g_ceph_context, cmdmap, "confirm", confirm) ||
- confirm != "--yes-i-really-mean-it") {
- ss << EXPERIMENTAL_WARNING;
- return -EPERM;
- }
- fsmap.modify_filesystem(
- fs->fscid,
- [](std::shared_ptr<Filesystem> fs)
- {
- fs->mds_map.set_snaps_allowed();
- });
- ss << "enabled new snapshots";
- }
- } else if (var == "allow_multimds") {
- bool enable_multimds = false;
- int r = parse_bool(val, &enable_multimds, ss);
- if (r != 0) {
- return r;
- }
-
- if (!enable_multimds) {
- fsmap.modify_filesystem(fs->fscid,
- [](std::shared_ptr<Filesystem> fs)
- {
- fs->mds_map.clear_multimds_allowed();
- });
- ss << "disallowed increasing the cluster size past 1";
- } else {
- fsmap.modify_filesystem(
- fs->fscid,
- [](std::shared_ptr<Filesystem> fs)
- {
- fs->mds_map.set_multimds_allowed();
- });
- ss << "enabled creation of more than 1 active MDS";
- }
- } else if (var == "allow_dirfrags") {
- bool enable_dirfrags = false;
- int r = parse_bool(val, &enable_dirfrags, ss);
- if (r != 0) {
- return r;
- }
-
- if (!enable_dirfrags) {
- fsmap.modify_filesystem(fs->fscid,
- [](std::shared_ptr<Filesystem> fs)
- {
- fs->mds_map.clear_dirfrags_allowed();
- });
- ss << "disallowed new directory fragmentation";
- } else {
- fsmap.modify_filesystem(
- fs->fscid,
- [](std::shared_ptr<Filesystem> fs)
- {
- fs->mds_map.set_dirfrags_allowed();
- });
- ss << "enabled directory fragmentation";
- }
- } else if (var == "cluster_down") {
- bool is_down = false;
- int r = parse_bool(val, &is_down, ss);
- if (r != 0) {
- return r;
- }
-
- fsmap.modify_filesystem(
- fs->fscid,
- [is_down](std::shared_ptr<Filesystem> fs)
- {
- if (is_down) {
- fs->mds_map.set_flag(CEPH_MDSMAP_DOWN);
- } else {
- fs->mds_map.clear_flag(CEPH_MDSMAP_DOWN);
- }
- });
-
- ss << "marked " << (is_down ? "down" : "up");
- } else if (var == "standby_count_wanted") {
- if (interr.length()) {
- ss << var << " requires an integer value";
- return -EINVAL;
- }
- if (n < 0) {
- ss << var << " must be non-negative";
- return -ERANGE;
- }
- fsmap.modify_filesystem(
- fs->fscid,
- [n](std::shared_ptr<Filesystem> fs)
- {
- fs->mds_map.set_standby_count_wanted(n);
- });
- } else {
- ss << "unknown variable " << var;
- return -EINVAL;
- }
-
- return 0;
- }
-};
-
-class AddDataPoolHandler : public FileSystemCommandHandler
-{
- public:
- AddDataPoolHandler(Paxos *paxos)
- : FileSystemCommandHandler("fs add_data_pool"), m_paxos(paxos)
- {}
-
- bool batched_propose() override {
- return true;
- }
-
- int handle(
- Monitor *mon,
- FSMap &fsmap,
- MonOpRequestRef op,
- map<string, cmd_vartype> &cmdmap,
- std::stringstream &ss) override
- {
- assert(m_paxos->is_plugged());
-
- string poolname;
- cmd_getval(g_ceph_context, cmdmap, "pool", poolname);
-
- std::string fs_name;
- if (!cmd_getval(g_ceph_context, cmdmap, "fs_name", fs_name)
- || fs_name.empty()) {
- ss << "Missing filesystem name";
- return -EINVAL;
- }
-
- auto fs = fsmap.get_filesystem(fs_name);
- if (fs == nullptr) {
- ss << "Not found: '" << fs_name << "'";
- return -ENOENT;
- }
-
- int64_t poolid = mon->osdmon()->osdmap.lookup_pg_pool_name(poolname);
- if (poolid < 0) {
- string err;
- poolid = strict_strtol(poolname.c_str(), 10, &err);
- if (err.length()) {
- ss << "pool '" << poolname << "' does not exist";
- return -ENOENT;
- }
- }
-
- int r = _check_pool(mon->osdmon()->osdmap, poolid, false, false, &ss);
- if (r != 0) {
- return r;
- }
-
- // no-op when the data_pool already on fs
- if (fs->mds_map.is_data_pool(poolid)) {
- ss << "data pool " << poolid << " is already on fs " << fs_name;
- return 0;
- }
-
- // if we're running as luminous, we have to set the pool application metadata
- if (mon->osdmon()->osdmap.require_osd_release >= CEPH_RELEASE_LUMINOUS ||
- mon->osdmon()->pending_inc.new_require_osd_release >= CEPH_RELEASE_LUMINOUS) {
- if (!mon->osdmon()->is_writeable()) {
- // not allowed to write yet, so retry when we can
- mon->osdmon()->wait_for_writeable(op, new PaxosService::C_RetryMessage(mon->mdsmon(), op));
- return -EAGAIN;
- }
- mon->osdmon()->do_application_enable(poolid, pg_pool_t::APPLICATION_NAME_CEPHFS);
- mon->osdmon()->propose_pending();
- }
-
- fsmap.modify_filesystem(
- fs->fscid,
- [poolid](std::shared_ptr<Filesystem> fs)
- {
- fs->mds_map.add_data_pool(poolid);
- });
-
- ss << "added data pool " << poolid << " to fsmap";
-
- return 0;
- }
-
-private:
- Paxos *m_paxos;
-};
-
-class SetDefaultHandler : public FileSystemCommandHandler
-{
- public:
- SetDefaultHandler()
- : FileSystemCommandHandler("fs set-default")
- {}
-
- int handle(
- Monitor *mon,
- FSMap &fsmap,
- MonOpRequestRef op,
- map<string, cmd_vartype> &cmdmap,
- std::stringstream &ss) override
- {
- std::string fs_name;
- cmd_getval(g_ceph_context, cmdmap, "fs_name", fs_name);
- auto fs = fsmap.get_filesystem(fs_name);
- if (fs == nullptr) {
- ss << "filesystem '" << fs_name << "' does not exist";
- return -ENOENT;
- }
-
- fsmap.set_legacy_client_fscid(fs->fscid);
- return 0;
- }
-};
-
-class RemoveFilesystemHandler : public FileSystemCommandHandler
-{
- public:
- RemoveFilesystemHandler()
- : FileSystemCommandHandler("fs rm")
- {}
-
- int handle(
- Monitor *mon,
- FSMap &fsmap,
- MonOpRequestRef op,
- map<string, cmd_vartype> &cmdmap,
- std::stringstream &ss) override
- {
- // Check caller has correctly named the FS to delete
- // (redundant while there is only one FS, but command
- // syntax should apply to multi-FS future)
- string fs_name;
- cmd_getval(g_ceph_context, cmdmap, "fs_name", fs_name);
- auto fs = fsmap.get_filesystem(fs_name);
- if (fs == nullptr) {
- // Consider absence success to make deletes idempotent
- ss << "filesystem '" << fs_name << "' does not exist";
- return 0;
- }
-
- // Check that no MDS daemons are active
- if (fs->mds_map.get_num_up_mds() > 0) {
- ss << "all MDS daemons must be inactive before removing filesystem";
- return -EINVAL;
- }
-
- // Check for confirmation flag
- string sure;
- cmd_getval(g_ceph_context, cmdmap, "sure", sure);
- if (sure != "--yes-i-really-mean-it") {
- ss << "this is a DESTRUCTIVE operation and will make data in your filesystem permanently" \
- " inaccessible. Add --yes-i-really-mean-it if you are sure you wish to continue.";
- return -EPERM;
- }
-
- if (fsmap.get_legacy_client_fscid() == fs->fscid) {
- fsmap.set_legacy_client_fscid(FS_CLUSTER_ID_NONE);
- }
-
- std::vector<mds_gid_t> to_fail;
- // There may be standby_replay daemons left here
- for (const auto &i : fs->mds_map.get_mds_info()) {
- assert(i.second.state == MDSMap::STATE_STANDBY_REPLAY);
- to_fail.push_back(i.first);
- }
-
- for (const auto &gid : to_fail) {
- // Standby replays don't write, so it isn't important to
- // wait for an osdmap propose here: ignore return value.
- mon->mdsmon()->fail_mds_gid(gid);
- }
-
- fsmap.erase_filesystem(fs->fscid);
-
- return 0;
- }
-};
-
-class ResetFilesystemHandler : public FileSystemCommandHandler
-{
- public:
- ResetFilesystemHandler()
- : FileSystemCommandHandler("fs reset")
- {}
-
- int handle(
- Monitor *mon,
- FSMap &fsmap,
- MonOpRequestRef op,
- map<string, cmd_vartype> &cmdmap,
- std::stringstream &ss) override
- {
- string fs_name;
- cmd_getval(g_ceph_context, cmdmap, "fs_name", fs_name);
- auto fs = fsmap.get_filesystem(fs_name);
- if (fs == nullptr) {
- ss << "filesystem '" << fs_name << "' does not exist";
- // Unlike fs rm, we consider this case an error
- return -ENOENT;
- }
-
- // Check that no MDS daemons are active
- if (fs->mds_map.get_num_up_mds() > 0) {
- ss << "all MDS daemons must be inactive before resetting filesystem: set the cluster_down flag"
- " and use `ceph mds fail` to make this so";
- return -EINVAL;
- }
-
- // Check for confirmation flag
- string sure;
- cmd_getval(g_ceph_context, cmdmap, "sure", sure);
- if (sure != "--yes-i-really-mean-it") {
- ss << "this is a potentially destructive operation, only for use by experts in disaster recovery. "
- "Add --yes-i-really-mean-it if you are sure you wish to continue.";
- return -EPERM;
- }
-
- fsmap.reset_filesystem(fs->fscid);
-
- return 0;
- }
-};
-
-class RemoveDataPoolHandler : public FileSystemCommandHandler
-{
- public:
- RemoveDataPoolHandler()
- : FileSystemCommandHandler("fs rm_data_pool")
- {}
-
- int handle(
- Monitor *mon,
- FSMap &fsmap,
- MonOpRequestRef op,
- map<string, cmd_vartype> &cmdmap,
- std::stringstream &ss) override
- {
- string poolname;
- cmd_getval(g_ceph_context, cmdmap, "pool", poolname);
-
- std::string fs_name;
- if (!cmd_getval(g_ceph_context, cmdmap, "fs_name", fs_name)
- || fs_name.empty()) {
- ss << "Missing filesystem name";
- return -EINVAL;
- }
-
- auto fs = fsmap.get_filesystem(fs_name);
- if (fs == nullptr) {
- ss << "Not found: '" << fs_name << "'";
- return -ENOENT;
- }
-
- int64_t poolid = mon->osdmon()->osdmap.lookup_pg_pool_name(poolname);
- if (poolid < 0) {
- string err;
- poolid = strict_strtol(poolname.c_str(), 10, &err);
- if (err.length()) {
- ss << "pool '" << poolname << "' does not exist";
- return -ENOENT;
- } else if (poolid < 0) {
- ss << "invalid pool id '" << poolid << "'";
- return -EINVAL;
- }
- }
-
- assert(poolid >= 0); // Checked by parsing code above
-
- if (fs->mds_map.get_first_data_pool() == poolid) {
- ss << "cannot remove default data pool";
- return -EINVAL;
- }
-
-
- int r = 0;
- fsmap.modify_filesystem(fs->fscid,
- [&r, poolid](std::shared_ptr<Filesystem> fs)
- {
- r = fs->mds_map.remove_data_pool(poolid);
- });
- if (r == -ENOENT) {
- // It was already removed, succeed in silence
- return 0;
- } else if (r == 0) {
- // We removed it, succeed
- ss << "removed data pool " << poolid << " from fsmap";
- return 0;
- } else {
- // Unexpected error, bubble up
- return r;
- }
- }
-};
-
-
-/**
- * For commands that refer to a particular filesystem,
- * enable wrapping to implement the legacy version of
- * the command (like "mds add_data_pool" vs "fs add_data_pool")
- *
- * The wrapped handler must expect a fs_name argument in
- * its command map.
- */
-template<typename T>
-class LegacyHandler : public T
-{
- std::string legacy_prefix;
-
- public:
- template <typename... Args>
- LegacyHandler(const std::string &new_prefix, Args&&... args)
- : T(std::forward<Args>(args)...)
- {
- legacy_prefix = new_prefix;
- }
-
- std::string const &get_prefix() override {return legacy_prefix;}
-
- int handle(
- Monitor *mon,
- FSMap &fsmap,
- MonOpRequestRef op,
- map<string, cmd_vartype> &cmdmap,
- std::stringstream &ss) override
- {
- auto fs = fsmap.get_legacy_filesystem();
- if (fs == nullptr) {
- ss << "No filesystem configured";
- return -ENOENT;
- }
- std::map<string, cmd_vartype> modified = cmdmap;
- modified["fs_name"] = fs->mds_map.get_fs_name();
- return T::handle(mon, fsmap, op, modified, ss);
- }
-};
-
-/**
- * For commands with an alternative prefix
- */
-template<typename T>
-class AliasHandler : public T
-{
- std::string alias_prefix;
-
- public:
- AliasHandler(const std::string &new_prefix)
- : T()
- {
- alias_prefix = new_prefix;
- }
-
- std::string const &get_prefix() override {return alias_prefix;}
-
- int handle(
- Monitor *mon,
- FSMap &fsmap,
- MonOpRequestRef op,
- map<string, cmd_vartype> &cmdmap,
- std::stringstream &ss) override
- {
- return T::handle(mon, fsmap, op, cmdmap, ss);
- }
-};
-
-
-std::list<std::shared_ptr<FileSystemCommandHandler> >
-FileSystemCommandHandler::load(Paxos *paxos)
-{
- std::list<std::shared_ptr<FileSystemCommandHandler> > handlers;
-
- handlers.push_back(std::make_shared<SetHandler>());
- handlers.push_back(std::make_shared<LegacyHandler<SetHandler> >("mds set"));
- handlers.push_back(std::make_shared<FlagSetHandler>());
- handlers.push_back(std::make_shared<AddDataPoolHandler>(paxos));
- handlers.push_back(std::make_shared<LegacyHandler<AddDataPoolHandler> >(
- "mds add_data_pool", paxos));
- handlers.push_back(std::make_shared<RemoveDataPoolHandler>());
- handlers.push_back(std::make_shared<LegacyHandler<RemoveDataPoolHandler> >(
- "mds remove_data_pool"));
- handlers.push_back(std::make_shared<LegacyHandler<RemoveDataPoolHandler> >(
- "mds rm_data_pool"));
- handlers.push_back(std::make_shared<FsNewHandler>(paxos));
- handlers.push_back(std::make_shared<RemoveFilesystemHandler>());
- handlers.push_back(std::make_shared<ResetFilesystemHandler>());
-
- handlers.push_back(std::make_shared<SetDefaultHandler>());
- handlers.push_back(std::make_shared<AliasHandler<SetDefaultHandler> >(
- "fs set_default"));
-
- return handlers;
-}
-
-int FileSystemCommandHandler::parse_bool(
- const std::string &bool_str,
- bool *result,
- std::ostream &ss)
-{
- assert(result != nullptr);
-
- string interr;
- int64_t n = strict_strtoll(bool_str.c_str(), 10, &interr);
-
- if (bool_str == "false" || bool_str == "no"
- || (interr.length() == 0 && n == 0)) {
- *result = false;
- return 0;
- } else if (bool_str == "true" || bool_str == "yes"
- || (interr.length() == 0 && n == 1)) {
- *result = true;
- return 0;
- } else {
- ss << "value must be false|no|0 or true|yes|1";
- return -EINVAL;
- }
-}
-
-int FileSystemCommandHandler::_check_pool(
- OSDMap &osd_map,
- const int64_t pool_id,
- bool metadata,
- bool force,
- std::stringstream *ss) const
-{
- assert(ss != NULL);
-
- const pg_pool_t *pool = osd_map.get_pg_pool(pool_id);
- if (!pool) {
- *ss << "pool id '" << pool_id << "' does not exist";
- return -ENOENT;
- }
-
- const string& pool_name = osd_map.get_pool_name(pool_id);
-
- if (pool->is_erasure() && metadata) {
- *ss << "pool '" << pool_name << "' (id '" << pool_id << "')"
- << " is an erasure-coded pool. Use of erasure-coded pools"
- << " for CephFS metadata is not permitted";
- return -EINVAL;
- } else if (pool->is_erasure() && !pool->allows_ecoverwrites()) {
- // non-overwriteable EC pools are only acceptable with a cache tier overlay
- if (!pool->has_tiers() || !pool->has_read_tier() || !pool->has_write_tier()) {
- *ss << "pool '" << pool_name << "' (id '" << pool_id << "')"
- << " is an erasure-coded pool, with no overwrite support";
- return -EINVAL;
- }
-
- // That cache tier overlay must be writeback, not readonly (it's the
- // write operations like modify+truncate we care about support for)
- const pg_pool_t *write_tier = osd_map.get_pg_pool(
- pool->write_tier);
- assert(write_tier != NULL); // OSDMonitor shouldn't allow DNE tier
- if (write_tier->cache_mode == pg_pool_t::CACHEMODE_FORWARD
- || write_tier->cache_mode == pg_pool_t::CACHEMODE_READONLY) {
- *ss << "EC pool '" << pool_name << "' has a write tier ("
- << osd_map.get_pool_name(pool->write_tier)
- << ") that is configured "
- "to forward writes. Use a cache mode such as 'writeback' for "
- "CephFS";
- return -EINVAL;
- }
- }
-
- if (pool->is_tier()) {
- *ss << " pool '" << pool_name << "' (id '" << pool_id
- << "') is already in use as a cache tier.";
- return -EINVAL;
- }
-
- if (!force && !pool->application_metadata.empty() &&
- pool->application_metadata.count(
- pg_pool_t::APPLICATION_NAME_CEPHFS) == 0) {
- *ss << " pool '" << pool_name << "' (id '" << pool_id
- << "') has a non-CephFS application enabled.";
- return -EINVAL;
- }
-
- // Nothing special about this pool, so it is permissible
- return 0;
-}
-
Code Review / stor4nfv.git / blobdiff