void start( const string& lp , bool append ) {
uassert( 10268 , "LoggingManager already started" , ! _enabled );
_append = append;
bool exists = boost::filesystem::exists(lp);
// test path
FILE * test = fopen( lp.c_str() , _append ? "a" : "w" );
if ( ! test ) {
if (boost::filesystem::is_directory(lp)) {
cout << "logpath [" << lp << "] should be a file name not a directory" << endl;
}
else {
cout << "can't open [" << lp << "] for log file: " << errnoWithDescription() << endl;
}
dbexit( EXIT_BADOPTIONS );
assert( 0 );
}
if (append && exists) {
// two blank lines before and after
const string msg = "\n\n***** SERVER RESTARTED *****\n\n\n";
massert(14036, errnoWithPrefix("couldn't write to log file"),
fwrite(msg.data(), 1, msg.size(), test) == msg.size());
}
fclose( test );
_path = lp;
_enabled = 1;
rotate();
}
void FileAllocator::ensureLength(int fd , long size) {
#if !defined(_WIN32)
if (useSparseFiles(fd)) {
LOG(1) << "using ftruncate to create a sparse file" << endl;
int ret = ftruncate(fd, size);
uassert(16063, "ftruncate failed: " + errnoWithDescription(), ret == 0);
return;
}
#endif
#if defined(__linux__)
int ret = posix_fallocate(fd,0,size);
if ( ret == 0 )
return;
log() << "FileAllocator: posix_fallocate failed: " << errnoWithDescription( ret ) << " falling back" << endl;
#endif
off_t filelen = lseek( fd, 0, SEEK_END );
if ( filelen < size ) {
if (filelen != 0) {
stringstream ss;
ss << "failure creating new datafile; lseek failed for fd " << fd << " with errno: " << errnoWithDescription();
uassert( 10440 , ss.str(), filelen == 0 );
}
// Check for end of disk.
uassert( 10441 , str::stream() << "Unable to allocate new file of size " << size << ' ' << errnoWithDescription(),
size - 1 == lseek(fd, size - 1, SEEK_SET) );
uassert( 10442 , str::stream() << "Unable to allocate new file of size " << size << ' ' << errnoWithDescription(),
1 == write(fd, "", 1) );
// File expansion is completed here. Do not do the zeroing out on OS-es where there
// is no risk of triggering allocation-related bugs such as
// http://support.microsoft.com/kb/2731284.
//
if (!ProcessInfo::isDataFileZeroingNeeded()) {
return;
}
lseek(fd, 0, SEEK_SET);
const long z = 256 * 1024;
const boost::scoped_array<char> buf_holder (new char[z]);
char* buf = buf_holder.get();
memset(buf, 0, z);
long left = size;
while ( left > 0 ) {
long towrite = left;
if ( towrite > z )
towrite = z;
int written = write( fd , buf , towrite );
uassert( 10443 , errnoWithPrefix("FileAllocator: file write failed" ), written > 0 );
left -= written;
}
}
}
void start( const string& lp , bool append ) {
uassert( 10268 , "LoggingManager already started" , ! _enabled );
_append = append;
bool exists = boost::filesystem::exists(lp);
bool isdir = boost::filesystem::is_directory(lp);
bool isreg = boost::filesystem::is_regular(lp);
if ( exists ) {
if ( isdir ) {
cout << "logpath [" << lp << "] should be a filename, not a directory" << endl;
dbexit( EXIT_BADOPTIONS );
assert( 0 );
}
if ( ! append ) {
// only attempt rename if log is regular file
if ( isreg ) {
stringstream ss;
ss << lp << "." << terseCurrentTime( false );
string s = ss.str();
if ( ! rename( lp.c_str() , s.c_str() ) ) {
cout << "log file [" << lp << "] exists; copied to temporary file [" << s << "]" << endl;
} else {
cout << "log file [" << lp << "] exists and couldn't make backup; run with --logappend or manually remove file (" << strerror(errno) << ")" << endl;
dbexit( EXIT_BADOPTIONS );
assert( 0 );
}
}
}
}
// test path
FILE * test = fopen( lp.c_str() , _append ? "a" : "w" );
if ( ! test ) {
cout << "can't open [" << lp << "] for log file: " << errnoWithDescription() << endl;
dbexit( EXIT_BADOPTIONS );
assert( 0 );
}
if (append && exists){
// two blank lines before and after
const string msg = "\n\n***** SERVER RESTARTED *****\n\n\n";
massert(14036, errnoWithPrefix("couldn't write to log file"),
fwrite(msg.data(), 1, msg.size(), test) == msg.size());
}
fclose( test );
_path = lp;
_enabled = 1;
rotate();
}
void FileAllocator::ensureLength(int fd , long size) {
#if !defined(_WIN32)
if (useSparseFiles(fd)) {
LOG(1) << "using ftruncate to create a sparse file" << endl;
int ret = ftruncate(fd, size);
uassert(16063, "ftruncate failed: " + errnoWithDescription(), ret == 0);
return;
}
#endif
#if defined(__linux__)
int ret = posix_fallocate(fd,0,size);
if ( ret == 0 )
return;
log() << "FileAllocator: posix_fallocate failed: " << errnoWithDescription( ret ) << " falling back" << endl;
#endif
off_t filelen = lseek( fd, 0, SEEK_END );
if ( filelen < size ) {
if (filelen != 0) {
stringstream ss;
ss << "failure creating new datafile; lseek failed for fd " << fd << " with errno: " << errnoWithDescription();
uassert( 10440 , ss.str(), filelen == 0 );
}
// Check for end of disk.
uassert( 10441 , str::stream() << "Unable to allocate new file of size " << size << ' ' << errnoWithDescription(),
size - 1 == lseek(fd, size - 1, SEEK_SET) );
uassert( 10442 , str::stream() << "Unable to allocate new file of size " << size << ' ' << errnoWithDescription(),
1 == write(fd, "", 1) );
lseek(fd, 0, SEEK_SET);
const long z = 256 * 1024;
const boost::scoped_array<char> buf_holder (new char[z]);
char* buf = buf_holder.get();
memset(buf, 0, z);
long left = size;
while ( left > 0 ) {
long towrite = left;
if ( towrite > z )
towrite = z;
int written = write( fd , buf , towrite );
uassert( 10443 , errnoWithPrefix("FileAllocator: file write failed" ), written > 0 );
left -= written;
}
}
}
