diff options
| -rw-r--r-- | src/mongo/db/namespace_details.cpp | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/mongo/db/namespace_details.cpp b/src/mongo/db/namespace_details.cpp index 8573aff9961..c0a47d2e35c 100644 --- a/src/mongo/db/namespace_details.cpp +++ b/src/mongo/db/namespace_details.cpp @@ -31,6 +31,7 @@ #include "mongo/db/ops/update.h" #include "mongo/db/pdfile.h" #include "mongo/scripting/engine.h" +#include "mongo/util/file.h" #include "mongo/util/hashtab.h" namespace mongo { @@ -179,8 +180,26 @@ namespace mongo { else { // use lenForNewNsFiles, we are making a new database massert( 10343, "bad lenForNewNsFiles", lenForNewNsFiles >= 1024*1024 ); + maybeMkdir(); unsigned long long l = lenForNewNsFiles; + + { + // Due to SERVER-15369 we need to explicitly write zero-bytes to the NS file. + const unsigned long long kBlockSize = 1024*1024; + verify(l % kBlockSize == 0); // ns files can only be multiples of 1MB + const std::vector<char> zeros(kBlockSize, 0); + + File file; + file.open(pathString.c_str()); + massert(18825, str::stream() << "couldn't create file " << pathString, file.is_open()); + for (fileofs ofs = 0; ofs < l; ofs += kBlockSize ) { + file.write(ofs, &zeros[0], kBlockSize); + } + file.fsync(); + massert(18826, str::stream() << "failure writing file " << pathString, !file.bad() ); + } + if( f.create(pathString, l, true) ) { getDur().createdFile(pathString, l); // always a new file len = l; |