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https://github.com/kdave/btrfs-progs
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d3cf350e21
Currently mkfs uses its own create_uuid_tree(), but that function is only handling FS_TREE. This means for btrfs-convert we do not generate the uuid tree, nor add the UUID of the image subvolume. This can be a problem if we're going to support multiple subvolumes during mkfs time. To address this, introduce a new helper, btrfs_rebuild_uuid_tree(): - Create a new uuid tree if there is not one - Remove all the existing items from uuid tree - Iterate through all subvolumes * If the subvolume has no valid UUID, regenerate one * Add the uuid entry for the subvolume UUID * If the subvolume has received UUID, also add it to UUID tree By this, this new helper can handle all the uuid tree generation needs for: - Current mkfs Only one uuid entry for FS_TREE - Current btrfs-convert Only FS_TREE and the image subvolume - Future multi-subvolume mkfs As we do the scan for all subvolumes. - Future "btrfs rescue rebuild-uuid-tree" Signed-off-by: Qu Wenruo <wqu@suse.com> |
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| .. | ||
| common.c | ||
| common.h | ||
| main.c | ||
| Makefile | ||
| rootdir.c | ||
| rootdir.h | ||