--- /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