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* btrfs-progs: find-root: Allow btrfs-find-root to search chunk root even ↵Qu Wenruo2016-02-261-1/+1
| | | | | | | | | | | | | chunk root is corrupted Since now open_ctree_fs_info() can even return a valid fs_info with only system chunk mapping from super block, use this ability to do chunk root search for heavily damanged fs. As an fast alternative for time consuming and buggy chunk-recovery. Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.com>
* btrfs-progs: Add new find-root.[ch] infrastructureQu Wenruo2015-02-111-0/+87
Introduce new find-root.[ch] infrastructure which has better tree root judgment and uses much less codes to do it. The new infrastructure will only record tree blocks with highest level among its generation, and do better judgment whether the found tree block is the desired one(level + generation check other than the original generation only check). Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.cz>