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Merge pull request #395 from lalinsky/fix-env-test

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Relax the block count check on deallocation in env_test
This commit is contained in:
Siying Dong 2014-11-14 10:56:41 -08:00
parent 94fa542f82 746cfaac58
commit 136b8583bf
1 changed files with 5 additions and 3 deletions
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8
util/env_test.cc
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@ -552,6 +552,7 @@ TEST(EnvPosixTest, AllocateTest) {
// allocate 100 MB
size_t kPreallocateSize = 100 * 1024 * 1024;
size_t kBlockSize = 512;
size_t kPageSize = 4096;
std::string data(1024 * 1024, 'a');
wfile->SetPreallocationBlockSize(kPreallocateSize);
ASSERT_OK(wfile->Append(Slice(data)));
@ -565,8 +566,7 @@ TEST(EnvPosixTest, AllocateTest) {
// we only require that number of allocated blocks is at least what we expect.
// It looks like some FS give us more blocks that we asked for. That's fine.
// It might be worth investigating further.
auto st_blocks = f_stat.st_blocks;
ASSERT_LE((unsigned int)(kPreallocateSize / kBlockSize), st_blocks);
ASSERT_LE((unsigned int)(kPreallocateSize / kBlockSize), f_stat.st_blocks);
// close the file, should deallocate the blocks
wfile.reset();
@ -574,7 +574,9 @@ TEST(EnvPosixTest, AllocateTest) {
stat(fname.c_str(), &f_stat);
ASSERT_EQ((unsigned int)data.size(), f_stat.st_size);
// verify that preallocated blocks were deallocated on file close
ASSERT_EQ((f_stat.st_size + kBlockSize - 1) / kBlockSize, (unsigned int)f_stat.st_blocks);
// Because the FS might give us more blocks, we add a full page to the size
// and expect the number of blocks to be less or equal to that.
ASSERT_GE((f_stat.st_size + kPageSize + kBlockSize - 1) / kBlockSize, (unsigned int)f_stat.st_blocks);
}
#endif // ROCKSDB_FALLOCATE_PRESENT