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/* Copyright 2010 10gen Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "mongo/util/paths.h"
#include "mongo/platform/basic.h"
#include "mongo/util/log.h"
namespace mongo {
void flushMyDirectory(const boost::filesystem::path& file) {
#ifdef __linux__ // this isn't needed elsewhere
static bool _warnedAboutFilesystem = false;
// if called without a fully qualified path it asserts; that makes mongoperf fail.
// so make a warning. need a better solution longer term.
// massert(13652, str::stream() << "Couldn't find parent dir for file: " << file.string(),);
if (!file.has_branch_path()) {
log() << "warning flushMyDirectory couldn't find parent dir for file: "
<< file.string();
return;
}
boost::filesystem::path dir = file.branch_path(); // parent_path in new boosts
LOG(1) << "flushing directory " << dir.string();
int fd = ::open(dir.string().c_str(), O_RDONLY); // DO NOT THROW OR ASSERT BEFORE CLOSING
massert(13650, str::stream() << "Couldn't open directory '" << dir.string()
<< "' for flushing: " << errnoWithDescription(),
fd >= 0);
if (fsync(fd) != 0) {
int e = errno;
if (e == EINVAL) { // indicates filesystem does not support synchronization
if (!_warnedAboutFilesystem) {
log() << "\tWARNING: This file system is not supported. For further information"
<< " see:"
<< startupWarningsLog;
log() << "\t\t\thttp://dochub.mongodb.org/core/unsupported-filesystems"
<< startupWarningsLog;
log() << "\t\tPlease notify MongoDB, Inc. if an unlisted filesystem generated "
<< "this warning." << startupWarningsLog;
_warnedAboutFilesystem = true;
}
}
else {
close(fd);
massert(13651, str::stream() << "Couldn't fsync directory '" << dir.string()
<< "': " << errnoWithDescription(e),
false);
}
}
close(fd);
#endif
}
}
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