[thin_journal_check] first code drop
This commit is contained in:
Joe Thornber
parent
9837feaee5
commit
70cdfe12a2
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@ -118,6 +118,8 @@ SOURCE=\
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thin-provisioning/xml_format.cc
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DEVTOOLS_SOURCE=\
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thin-provisioning/thin_journal.cc \
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thin-provisioning/thin_journal_check.cc \
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thin-provisioning/thin_ll_dump.cc \
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thin-provisioning/thin_ll_restore.cc \
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thin-provisioning/thin_show_duplicates.cc \
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@ -116,6 +116,13 @@ namespace thin_provisioning {
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virtual void usage(std::ostream &out) const;
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virtual int run(int argc, char **argv);
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};
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class thin_journal_cmd : public base::command {
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public:
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thin_journal_cmd();
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virtual void usage(std::ostream &out) const;
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virtual int run(int argc, char **argv);
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};
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#endif
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void register_thin_commands(base::application &app);
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@ -0,0 +1,329 @@
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// Copyright (C) 2018 Red Hat, Inc. All rights reserved.
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//
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// This file is part of the thin-provisioning-tools source.
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//
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// thin-provisioning-tools is free software: you can redistribute it
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// and/or modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation, either version 3 of
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// the License, or (at your option) any later version.
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//
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// thin-provisioning-tools is distributed in the hope that it will be
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// useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with thin-provisioning-tools. If not, see
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// <http://www.gnu.org/licenses/>.
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#include "thin-provisioning/thin_journal.h"
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#include <algorithm>
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using namespace thin_provisioning;
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using namespace persistent_data;
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using namespace std;
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//----------------------------------------------------------------
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byte_stream::byte_stream(block_manager<JOURNAL_BLOCK_SIZE>::ptr bm)
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: bm_(bm),
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current_block_(0),
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cursor_(0)
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{
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}
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void
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byte_stream::read_bytes(uint8_t *b, uint8_t *e)
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{
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while (b != e)
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b += read_some_(b, e);
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}
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void
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byte_stream::next_block_()
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{
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current_block_++;
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}
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size_t
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byte_stream::read_some_(uint8_t *b, uint8_t *e)
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{
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if (cursor_ == JOURNAL_BLOCK_SIZE)
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next_block_();
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size_t len = min<uint64_t>(e - b, JOURNAL_BLOCK_SIZE - cursor_);
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auto rr = bm_->read_lock(current_block_);
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uint8_t const *data_begin = reinterpret_cast<uint8_t const *>(rr.data()) + cursor_;
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memcpy(b, data_begin, len);
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cursor_ += len;
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return len;
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}
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//---------------------------------
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journal_msg::journal_msg(bool success)
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: success_(success)
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{
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}
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block_msg::block_msg(bool success, uint64_t index)
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: journal_msg(success), index_(index)
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{
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}
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read_lock_msg::read_lock_msg(bool success, uint64_t index)
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: block_msg(success, index)
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{
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}
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void
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read_lock_msg::visit(journal_visitor &v) const
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{
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v.visit(*this);
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}
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write_lock_msg::write_lock_msg(bool success, uint64_t index)
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: block_msg(success, index)
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{
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}
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void
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write_lock_msg::visit(journal_visitor &v) const
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{
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v.visit(*this);
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}
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zero_lock_msg::zero_lock_msg(bool success, uint64_t index)
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: block_msg(success, index)
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{
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}
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void
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zero_lock_msg::visit(journal_visitor &v) const
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{
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v.visit(*this);
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}
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try_read_lock_msg::try_read_lock_msg(bool success, uint64_t index)
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: block_msg(success, index)
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{
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}
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void
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try_read_lock_msg::visit(journal_visitor &v) const
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{
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v.visit(*this);
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}
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unlock_msg::unlock_msg(bool success, uint64_t index, delta_list const &deltas)
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: block_msg(success, index),
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deltas_(deltas)
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{
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}
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void
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unlock_msg::visit(journal_visitor &v) const
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{
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v.visit(*this);
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}
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verify_msg::verify_msg(bool success, uint64_t index)
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: block_msg(success, index)
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{
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}
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void
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verify_msg::visit(journal_visitor &v) const
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{
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v.visit(*this);
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}
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prepare_msg::prepare_msg(bool success, uint64_t index)
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: block_msg(success, index)
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{
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}
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void
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prepare_msg::visit(journal_visitor &v) const
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{
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v.visit(*this);
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}
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flush_msg::flush_msg(bool success)
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: journal_msg(success)
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{
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}
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void
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flush_msg::visit(journal_visitor &v) const
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{
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v.visit(*this);
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}
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flush_and_unlock_msg::flush_and_unlock_msg(bool success, uint64_t index, delta_list const &deltas)
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: block_msg(success, index),
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deltas_(deltas)
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{
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}
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void
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flush_and_unlock_msg::visit(journal_visitor &v) const
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{
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v.visit(*this);
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}
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prefetch_msg::prefetch_msg(bool success, uint64_t index)
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: block_msg(success, index)
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{
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}
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void
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prefetch_msg::visit(journal_visitor &v) const
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{
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v.visit(*this);
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}
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set_read_only_msg::set_read_only_msg()
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: journal_msg(true)
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{
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}
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void
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set_read_only_msg::visit(journal_visitor &v) const
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{
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v.visit(*this);
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}
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set_read_write_msg::set_read_write_msg()
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: journal_msg(true)
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{
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}
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void
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set_read_write_msg::visit(journal_visitor &v) const
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{
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v.visit(*this);
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}
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//------------------------------------------
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journal::journal(block_manager<JOURNAL_BLOCK_SIZE>::ptr bm)
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: in_(bm)
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{
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}
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void
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journal::read_journal(struct journal_visitor &v)
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{
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while (read_one_(v))
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;
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}
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bool
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journal::read_one_(struct journal_visitor &v)
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{
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uint8_t header = read_<uint8_t>();
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uint8_t t = header >> 1;
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uint8_t success = header & 0x1;
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uint64_t index;
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switch (static_cast<msg_type>(t)) {
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case MT_READ_LOCK:
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index = read_<uint64_t>();
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v.visit(read_lock_msg(success, index));
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break;
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case MT_WRITE_LOCK:
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index = read_<uint64_t>();
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v.visit(write_lock_msg(success, index));
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break;
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case MT_ZERO_LOCK:
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index = read_<uint64_t>();
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v.visit(zero_lock_msg(success, index));
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break;
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case MT_TRY_READ_LOCK:
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index = read_<uint64_t>();
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v.visit(try_read_lock_msg(success, index));
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break;
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case MT_UNLOCK: {
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index = read_<uint64_t>();
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auto deltas = read_deltas_();
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v.visit(unlock_msg(success, index, deltas));
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}
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break;
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case MT_VERIFY:
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index = read_<uint64_t>();
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v.visit(verify_msg(success, index));
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break;
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case MT_PREPARE:
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index = read_<uint64_t>();
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v.visit(prepare_msg(success, index));
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break;
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case MT_FLUSH:
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v.visit(flush_msg(success));
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break;
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case MT_FLUSH_AND_UNLOCK: {
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index = read_<uint64_t>();
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auto deltas = read_deltas_();
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v.visit(flush_and_unlock_msg(success, index, deltas));
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}
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break;
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case MT_PREFETCH:
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index = read_<uint64_t>();
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v.visit(prefetch_msg(success, index));
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break;
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case MT_SET_READ_ONLY:
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v.visit(set_read_only_msg());
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break;
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case MT_SET_READ_WRITE:
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v.visit(set_read_write_msg());
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break;
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case MT_END_OF_JOURNAL:
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return false;
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}
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return true;
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}
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bool
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journal::read_delta_(delta_list &ds)
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{
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uint8_t chunk = read_<uint8_t>();
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if (chunk == 0xff)
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return false;
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auto bytes = vector<uint8_t>(JOURNAL_CHUNK_SIZE, 0);
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in_.read_bytes(bytes.data(), bytes.data() + JOURNAL_CHUNK_SIZE);
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ds.push_back(delta(chunk, bytes));
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return true;
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}
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thin_provisioning::delta_list
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journal::read_deltas_()
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{
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delta_list ds;
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while (read_delta_(ds))
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;
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return ds;
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}
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//----------------------------------------------------------------
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@ -0,0 +1,203 @@
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// Copyright (C) 2018 Red Hat, Inc. All rights reserved.
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//
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// This file is part of the thin-provisioning-tools source.
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//
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// thin-provisioning-tools is free software: you can redistribute it
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// and/or modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation, either version 3 of
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// the License, or (at your option) any later version.
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//
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// thin-provisioning-tools is distributed in the hope that it will be
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// useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with thin-provisioning-tools. If not, see
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// <http://www.gnu.org/licenses/>.
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#ifndef THIN_PROVISIONING_THIN_JOURNAL_H
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#define THIN_PROVISIONING_THIN_JOURNAL_H
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#include "persistent-data/block.h"
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#include <vector>
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//----------------------------------------------------------------
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namespace thin_provisioning {
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uint32_t const JOURNAL_BLOCK_SIZE = 256 * 1024;
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uint32_t const JOURNAL_NR_CHUNKS = 32;
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uint32_t const JOURNAL_CHUNK_SIZE = 4096 / JOURNAL_NR_CHUNKS;
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class byte_stream {
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public:
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byte_stream(persistent_data::block_manager<JOURNAL_BLOCK_SIZE>::ptr bm);
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void read_bytes(uint8_t *b, uint8_t *e);
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private:
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void next_block_();
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size_t read_some_(uint8_t *b, uint8_t *e);
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persistent_data::block_manager<JOURNAL_BLOCK_SIZE>::ptr bm_;
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uint64_t current_block_;
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uint64_t cursor_;
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};
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//---------------------------------
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class journal_visitor;
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struct journal_msg {
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journal_msg(bool success);
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virtual ~journal_msg() {}
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virtual void visit(journal_visitor &v) const = 0;
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bool success_;
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};
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struct block_msg : public journal_msg {
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block_msg(bool success, uint64_t index);
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uint64_t index_;
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};
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struct read_lock_msg : public block_msg {
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read_lock_msg(bool success, uint64_t index);
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virtual void visit(journal_visitor &v) const;
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};
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struct write_lock_msg : public block_msg {
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write_lock_msg(bool success, uint64_t index);
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virtual void visit(journal_visitor &v) const;
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};
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struct zero_lock_msg : public block_msg {
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zero_lock_msg(bool success, uint64_t index);
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virtual void visit(journal_visitor &v) const;
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};
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struct try_read_lock_msg : public block_msg {
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try_read_lock_msg(bool success, uint64_t index);
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virtual void visit(journal_visitor &v) const;
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};
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struct delta {
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delta(uint32_t offset, std::vector<uint8_t> &bytes)
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: offset_(offset),
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bytes_(bytes) {
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}
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uint32_t offset_;
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std::vector<uint8_t> bytes_;
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};
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using delta_list = std::vector<delta>;
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struct unlock_msg : public block_msg {
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unlock_msg(bool success, uint64_t index, delta_list const &deltas);
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virtual void visit(journal_visitor &v) const;
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delta_list deltas_;
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};
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struct verify_msg : public block_msg {
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verify_msg(bool success, uint64_t index);
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virtual void visit(journal_visitor &v) const;
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};
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struct prepare_msg : public block_msg {
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prepare_msg(bool success, uint64_t index);
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virtual void visit(journal_visitor &v) const;
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};
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struct flush_msg : public journal_msg {
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flush_msg(bool success);
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virtual void visit(journal_visitor &v) const;
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};
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struct flush_and_unlock_msg : public block_msg {
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flush_and_unlock_msg(bool success, uint64_t index, delta_list const &deltas);
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virtual void visit(journal_visitor &v) const;
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delta_list deltas_;
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};
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struct prefetch_msg : public block_msg {
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prefetch_msg(bool success, uint64_t index);
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virtual void visit(journal_visitor &v) const;
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};
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struct set_read_only_msg : public journal_msg {
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set_read_only_msg();
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virtual void visit(journal_visitor &v) const;
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};
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struct set_read_write_msg : public journal_msg {
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set_read_write_msg();
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virtual void visit(journal_visitor &v) const;
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};
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struct journal_visitor {
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public:
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virtual ~journal_visitor() {};
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void visit(journal_msg const &msg) {
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msg.visit(*this);
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}
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virtual void visit(read_lock_msg const &msg) = 0;
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virtual void visit(write_lock_msg const &msg) = 0;
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virtual void visit(zero_lock_msg const &msg) = 0;
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virtual void visit(try_read_lock_msg const &msg) = 0;
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virtual void visit(unlock_msg const &msg) = 0;
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virtual void visit(verify_msg const &msg) = 0;
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virtual void visit(prepare_msg const &msg) = 0;
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virtual void visit(flush_msg const &msg) = 0;
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virtual void visit(flush_and_unlock_msg const &msg) = 0;
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virtual void visit(prefetch_msg const &msg) = 0;
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virtual void visit(set_read_only_msg const &msg) = 0;
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virtual void visit(set_read_write_msg const &msg) = 0;
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};
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enum msg_type {
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MT_READ_LOCK = 0,
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MT_WRITE_LOCK,
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MT_ZERO_LOCK,
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MT_TRY_READ_LOCK,
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MT_UNLOCK,
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MT_VERIFY,
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MT_PREPARE,
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MT_FLUSH,
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MT_FLUSH_AND_UNLOCK,
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MT_PREFETCH,
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MT_SET_READ_ONLY,
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MT_SET_READ_WRITE,
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MT_END_OF_JOURNAL,
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};
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||||
class journal {
|
||||
public:
|
||||
journal(persistent_data::block_manager<JOURNAL_BLOCK_SIZE>::ptr bm);
|
||||
void read_journal(struct journal_visitor &v);
|
||||
|
||||
private:
|
||||
bool read_delta_(delta_list &ds);
|
||||
delta_list read_deltas_();
|
||||
bool read_one_(struct journal_visitor &v);
|
||||
|
||||
template <typename T> T read_() {
|
||||
T r;
|
||||
in_.read_bytes(reinterpret_cast<uint8_t *>(&r), reinterpret_cast<uint8_t *>(&r + 1));
|
||||
return r;
|
||||
}
|
||||
|
||||
byte_stream in_;
|
||||
};
|
||||
}
|
||||
|
||||
//----------------------------------------------------------------
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,353 @@
|
|||
// Copyright (C) 2018 Red Hat, Inc. All rights reserved.
|
||||
//
|
||||
// This file is part of the thin-provisioning-tools source.
|
||||
//
|
||||
// thin-provisioning-tools is free software: you can redistribute it
|
||||
// and/or modify it under the terms of the GNU General Public License
|
||||
// as published by the Free Software Foundation, either version 3 of
|
||||
// the License, or (at your option) any later version.
|
||||
//
|
||||
// thin-provisioning-tools is distributed in the hope that it will be
|
||||
// useful, but WITHOUT ANY WARRANTY; without even the implied warranty
|
||||
// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License along
|
||||
// with thin-provisioning-tools. If not, see
|
||||
// <http://www.gnu.org/licenses/>.
|
||||
|
||||
#include <iostream>
|
||||
#include <getopt.h>
|
||||
#include <libgen.h>
|
||||
#include <fcntl.h>
|
||||
|
||||
#include <boost/lexical_cast.hpp>
|
||||
#include <boost/optional.hpp>
|
||||
|
||||
#include <map>
|
||||
#include <set>
|
||||
|
||||
#include "version.h"
|
||||
|
||||
#include "base/application.h"
|
||||
#include "base/error_state.h"
|
||||
#include "base/file_utils.h"
|
||||
#include "base/nested_output.h"
|
||||
#include "persistent-data/data-structures/btree_counter.h"
|
||||
#include "persistent-data/space-maps/core.h"
|
||||
#include "persistent-data/space-maps/disk.h"
|
||||
#include "persistent-data/file_utils.h"
|
||||
#include "thin-provisioning/metadata.h"
|
||||
#include "thin-provisioning/device_tree.h"
|
||||
#include "thin-provisioning/mapping_tree.h"
|
||||
#include "thin-provisioning/metadata_counter.h"
|
||||
#include "thin-provisioning/superblock.h"
|
||||
#include "thin-provisioning/commands.h"
|
||||
#include "thin-provisioning/thin_journal.h"
|
||||
|
||||
using namespace base;
|
||||
using namespace boost;
|
||||
using namespace file_utils;
|
||||
using namespace std;
|
||||
using namespace thin_provisioning;
|
||||
|
||||
//----------------------------------------------------------------
|
||||
|
||||
namespace {
|
||||
|
||||
unsigned const MAX_HELD_LOCKS = 16;
|
||||
|
||||
// We use a temporary file to hold all the deltas. Assume the metadata initially starts zeroed.
|
||||
// Need to introduce notion of 'time' that increments everytime a write lock is taken.
|
||||
// Need to track updates to the superblock to define transactions.
|
||||
class checker : public journal_visitor {
|
||||
public:
|
||||
checker(block_address &nr_metadata_blocks)
|
||||
: bm_(new block_manager<>("metadata.tmp", nr_metadata_blocks, MAX_HELD_LOCKS, block_manager<>::CREATE)) {
|
||||
}
|
||||
|
||||
virtual void visit(read_lock_msg const &msg) {
|
||||
read_lock_(msg.index_);
|
||||
}
|
||||
|
||||
virtual void visit(write_lock_msg const &msg) {
|
||||
write_lock_(msg.index_);
|
||||
}
|
||||
|
||||
virtual void visit(zero_lock_msg const &msg) {
|
||||
write_lock_(msg.index_);
|
||||
}
|
||||
|
||||
virtual void visit(try_read_lock_msg const &msg) {
|
||||
read_lock_(msg.index_);
|
||||
}
|
||||
|
||||
virtual void visit(unlock_msg const &msg) {
|
||||
unlock_(msg.index_, msg.deltas_);
|
||||
}
|
||||
|
||||
virtual void visit(verify_msg const &msg) {
|
||||
// noop
|
||||
}
|
||||
|
||||
virtual void visit(prepare_msg const &msg) {
|
||||
// noop
|
||||
}
|
||||
|
||||
virtual void visit(flush_msg const &msg) {
|
||||
cerr << "spurious flush()\n";
|
||||
}
|
||||
|
||||
virtual void visit(flush_and_unlock_msg const &msg) {
|
||||
if (msg.index_ != superblock_detail::SUPERBLOCK_LOCATION) {
|
||||
cerr << "flush_and_unlock received for block " << msg.index_
|
||||
<< ", which isn't the superblock\n";
|
||||
throw runtime_error("bad flush_and_unlock");
|
||||
}
|
||||
|
||||
commit(msg.deltas_);
|
||||
}
|
||||
|
||||
virtual void visit(prefetch_msg const &msg) {
|
||||
// ignore
|
||||
}
|
||||
|
||||
virtual void visit(set_read_only_msg const &msg) {
|
||||
// ignore
|
||||
}
|
||||
|
||||
virtual void visit(set_read_write_msg const &msg) {
|
||||
// ignore
|
||||
}
|
||||
|
||||
private:
|
||||
void read_lock_(block_address b) {
|
||||
if (write_locks_.count(b)) {
|
||||
cerr << "read lock taken concurrently with write lock for block "
|
||||
<< b << "\n";
|
||||
throw runtime_error("bad read lock");
|
||||
}
|
||||
|
||||
auto it = read_locks_.find(b);
|
||||
if (it == read_locks_.end())
|
||||
read_locks_.insert(make_pair(b, 1));
|
||||
else
|
||||
it->second++;
|
||||
}
|
||||
|
||||
void write_lock_(block_address b) {
|
||||
if (active_.count(b)) {
|
||||
cerr << "write lock taken for block "
|
||||
<< b
|
||||
<< ", but it is still in the active transaction\n";
|
||||
throw runtime_error("bad write lock");
|
||||
}
|
||||
|
||||
if (write_locks_.count(b)) {
|
||||
cerr << "write lock already held for block "
|
||||
<< b
|
||||
<< "\n";
|
||||
throw runtime_error("bad write lock");
|
||||
}
|
||||
|
||||
if (read_locks_.count(b)) {
|
||||
cerr << "read lock requested for write locked block "
|
||||
<< b << "\n";
|
||||
throw runtime_error("bad write lock");
|
||||
}
|
||||
|
||||
write_locks_.insert(b);
|
||||
}
|
||||
|
||||
|
||||
void unlock_(block_address b, delta_list const &deltas) {
|
||||
if (write_locks_.count(b)) {
|
||||
write_locks_.erase(b);
|
||||
|
||||
auto wr = bm_->write_lock(b);
|
||||
|
||||
for (auto &&d : deltas) {
|
||||
uint8_t *data = static_cast<uint8_t *>(wr.data());
|
||||
|
||||
if (d.offset_ + d.bytes_.size() > 4096) {
|
||||
cerr << "delta for block " << b << " is out of range ("
|
||||
<< d.offset_ << ", " << d.offset_ + d.bytes_.size() << "]\n";
|
||||
throw runtime_error("bad unlock");
|
||||
}
|
||||
|
||||
memcpy(data + d.offset_, d.bytes_.data(), d.bytes_.size());
|
||||
}
|
||||
|
||||
} else {
|
||||
auto it = read_locks_.find(b);
|
||||
if (it == read_locks_.end()) {
|
||||
cerr << "unlock requested on block " << b << ", which isn't locked\n";
|
||||
throw runtime_error("bad unlock");
|
||||
}
|
||||
|
||||
if (deltas.size()) {
|
||||
cerr << "unlocking a read lock for " << b << ", yet there are " << deltas.size() << " deltas\n";
|
||||
throw runtime_error("bad unlock");
|
||||
}
|
||||
|
||||
// Decrement lock
|
||||
if (!it->second) {
|
||||
cerr << "read lock entry has zero count (internal error)\n";
|
||||
throw runtime_error("bad unlock");
|
||||
}
|
||||
|
||||
if (!--it->second)
|
||||
read_locks_.erase(it);
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
void commit(delta_list const &deltas) {
|
||||
// At this point the only lock held should be the superblock,
|
||||
// and that should be a write lock.
|
||||
if (read_locks_.size()) {
|
||||
cerr << "committing when the following read locks are still held:\n";
|
||||
for (auto &&p : read_locks_)
|
||||
cerr << p.first << "\n";
|
||||
}
|
||||
|
||||
|
||||
unlock_(superblock_detail::SUPERBLOCK_LOCATION, deltas);
|
||||
|
||||
if (write_locks_.size()) {
|
||||
cerr << "commit() called, but the following write locks are held:\n";
|
||||
for (auto &&b : write_locks_)
|
||||
cerr << b << "\n";
|
||||
}
|
||||
|
||||
build_active_set_();
|
||||
}
|
||||
|
||||
void build_active_set_() {
|
||||
using namespace thin_provisioning::superblock_detail;
|
||||
|
||||
superblock sb = read_superblock(bm_);
|
||||
block_counter bc;
|
||||
|
||||
auto tm = open_tm(bm_, SUPERBLOCK_LOCATION);
|
||||
auto sm = open_metadata_sm(*tm, &sb.metadata_space_map_root_);
|
||||
tm->set_sm(sm);
|
||||
|
||||
// FIXME: check we don't have a space leak from a cycle between the sm and tm
|
||||
|
||||
count_metadata(tm, sb, bc);
|
||||
|
||||
active_.clear();
|
||||
active_.insert(SUPERBLOCK_LOCATION);
|
||||
|
||||
for (auto &&p : bc.get_counts()) {
|
||||
if (!p.second) {
|
||||
cerr << "weird zero count for block " << p.first << "\n";
|
||||
throw runtime_error("build_active_set() failed");
|
||||
}
|
||||
|
||||
active_.insert(p.first);
|
||||
}
|
||||
}
|
||||
|
||||
typedef set<block_address> block_set;
|
||||
typedef map<block_address, unsigned> block_map;
|
||||
|
||||
block_set active_;
|
||||
block_set write_locks_;
|
||||
block_map read_locks_;
|
||||
|
||||
block_manager<>::ptr bm_;
|
||||
transaction_manager::ptr tm_;
|
||||
};
|
||||
|
||||
struct flags {
|
||||
flags()
|
||||
: quiet(false) {
|
||||
}
|
||||
|
||||
bool quiet;
|
||||
};
|
||||
|
||||
void check(string const &path, block_address nr_metadata_blocks) {
|
||||
block_address journal_size = get_file_length(path) / JOURNAL_BLOCK_SIZE;
|
||||
block_manager<JOURNAL_BLOCK_SIZE>::ptr bm(
|
||||
new block_manager<JOURNAL_BLOCK_SIZE>(path, journal_size, 4,
|
||||
block_manager<JOURNAL_BLOCK_SIZE>::READ_ONLY));
|
||||
journal j(bm);
|
||||
checker c(nr_metadata_blocks);
|
||||
|
||||
j.read_journal(c);
|
||||
}
|
||||
}
|
||||
|
||||
//----------------------------------------------------------------
|
||||
|
||||
thin_journal_cmd::thin_journal_cmd()
|
||||
: command("thin_journal_check")
|
||||
{
|
||||
}
|
||||
|
||||
void
|
||||
thin_journal_cmd::usage(std::ostream &out) const
|
||||
{
|
||||
out << "Usage: " << get_name() << " [options] {device|file} {nr blocks}" << endl
|
||||
<< "Options:\n"
|
||||
<< " {-q|--quiet}\n"
|
||||
<< " {-h|--help}\n"
|
||||
<< " {-V|--version}\n";
|
||||
}
|
||||
|
||||
int
|
||||
thin_journal_cmd::run(int argc, char **argv)
|
||||
{
|
||||
int c;
|
||||
flags fs;
|
||||
|
||||
char const shortopts[] = "qhV";
|
||||
option const longopts[] = {
|
||||
{ "quiet", no_argument, NULL, 'q'},
|
||||
{ "help", no_argument, NULL, 'h'},
|
||||
{ "version", no_argument, NULL, 'V'},
|
||||
{ NULL, no_argument, NULL, 0 }
|
||||
};
|
||||
|
||||
while ((c = getopt_long(argc, argv, shortopts, longopts, NULL)) != -1) {
|
||||
switch(c) {
|
||||
case 'h':
|
||||
usage(cout);
|
||||
return 0;
|
||||
|
||||
case 'q':
|
||||
fs.quiet = true;
|
||||
break;
|
||||
|
||||
case 'V':
|
||||
cout << THIN_PROVISIONING_TOOLS_VERSION << endl;
|
||||
return 0;
|
||||
|
||||
default:
|
||||
usage(cerr);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
if (argc - optind != 2) {
|
||||
if (!fs.quiet)
|
||||
usage(cerr);
|
||||
|
||||
exit(1);
|
||||
}
|
||||
|
||||
try {
|
||||
check(argv[optind], lexical_cast<block_address>(argv[optind + 1]));
|
||||
|
||||
} catch (std::exception &e) {
|
||||
cerr << e.what() << "\n";
|
||||
return 1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
//----------------------------------------------------------------
|
||||
Loading…
Reference in New Issue