emo/thin-provisioning-tools
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Tools now open the metadata device in O_EXCL mode.

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An attempt to stop people running the tools on active metadata.
This commit is contained in:
Joe Thornber
2015-07-07 13:47:00 +01:00
parent 7d8b6adf4e
commit 642ae6e7c2
6 changed files with 39 additions and 26 deletions
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thin-provisioning/metadata.cc
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@@ -118,7 +118,7 @@ metadata::metadata(std::string const &dev_path, open_type ot,
metadata::metadata(std::string const &dev_path, block_address metadata_snap)
{
tm_ = open_tm(open_bm(dev_path, block_manager<>::READ_ONLY));
tm_ = open_tm(open_bm(dev_path, block_manager<>::READ_ONLY, !metadata_snap));
sb_ = read_superblock(tm_->get_bm(), metadata_snap);
// We don't open the metadata sm for a held root