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[thin_show_dups] put linear branch back in

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This commit is contained in:
Joe Thornber 2015-08-25 08:22:16 +01:00
parent 3470ede50b
commit 10f93be8b1
2 changed files with 10 additions and 30 deletions
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2
thin-provisioning/pool_stream.cc
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@ -50,7 +50,7 @@ pool_stream::pool_stream(cache_stream &stream,
block_address
pool_stream::nr_chunks() const
{
return stream_.nr_chunks();
return nr_mapped_;
}
void

38
thin-provisioning/thin_show_duplicates.cc
View File

@ -210,12 +210,11 @@ namespace {
pbar->update_percent(100);
cout << "\n\ntotal dups: " << detector.get_total_duplicates() << endl;
// cout << (detector.get_total_duplicates() * 100) / nr_mapped_ << "% duplicates\n";
cout << (detector.get_total_duplicates() * 100) / pstream.nr_chunks() << "% duplicates\n";
return 0;
}
#if 0
int show_dups_linear(flags const &fs) {
if (!fs.block_size)
// FIXME: this check should be moved to the switch parsing
@ -223,39 +222,21 @@ namespace {
cerr << "path = " << fs.data_dev << "\n";
cerr << "block size = " << fs.block_size << "\n";
block_address block_size = *fs.block_size * 512;
block_address nr_blocks = get_nr_blocks(fs.data_dev, *fs.block_size);
cerr << "nr_blocks = " << nr_blocks << "\n";
// The cache uses a LRU eviction policy, which plays badly
// with a sequential read. So we can't prefetch all the
// blocks.
// FIXME: add MRU policy to cache
unsigned cache_blocks = (fs.cache_mem / *fs.block_size) / 2;
int fd = open_file(fs.data_dev);
sector_t block_sectors = *fs.block_size / 512;
block_cache cache(fd, block_sectors, nr_blocks, fs.cache_mem);
validator::ptr v(new bcache::noop_validator());
cache_stream stream(fs.data_dev, block_size, fs.cache_mem);
duplicate_detector detector(*fs.block_size, nr_blocks);
// warm up the cache
for (block_address i = 0; i < cache_blocks; i++)
cache.prefetch(i);
auto_ptr<progress_monitor> pbar = create_progress_bar("Examining data");
do {
chunk const &c = stream.get();
detector.examine(c);
pbar->update_percent((stream.index() * 100) / stream.nr_chunks());
for (block_address i = 0; i < nr_blocks; i++) {
block_cache::block &b = cache.get(i, 0, v);
block_address prefetch = i + cache_blocks;
if (prefetch < nr_blocks)
cache.prefetch(prefetch);
detector.examine(b);
b.put();
pbar->update_percent(i * 100 / nr_blocks);
}
} while (stream.advance());
pbar->update_percent(100);
cout << "\n\ntotal dups: " << detector.get_total_duplicates() << endl;
@ -263,14 +244,13 @@ namespace {
return 0;
}
#endif
int show_dups(flags const &fs) {
if (fs.metadata_dev)
return show_dups_pool(fs);
else {
cerr << "No metadata device provided, so treating data device as a linear device\n";
//return show_dups_linear(fs);
return show_dups_linear(fs);
}
}