mirror of
https://github.com/kdave/btrfs-progs
synced 2024-12-12 09:26:31 +00:00
4e9e978783
This new ability is added by: - Allow btrfs_map_block() to return the chunk type This makes later work much easier - Only reset stripe offset inside btrfs_map_block() when needed Currently if @raid_map is not NULL, btrfs_map_block() will consider this call is for WRITE and will reset stripe offset. This is no longer the case, as for RAID56 read with mirror_num 1/0, we will still call btrfs_map_block() with non-NULL raid_map. Add a small check to make sure we won't reset stripe offset for mirror 1/0 read. - Add new helper read_raid56() to handle rebuild We will read the full stripe (including all data and P/Q stripes) do the rebuild, then only copy the refered part to the caller. There is a catch for RAID6, we have no way to exhaust all combination, so the current repair will assume the mirror = 0 data is corrupted, then try to find a missing device. But if no missing device can be found, it will assume P is corrupted. This is just a guess, and can to totally wrong, but we have no better idea. Now btrfs-progs have full read ability for RAID56. Signed-off-by: Qu Wenruo <wqu@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
||
|---|---|---|
| .. | ||
| backref.c | ||
| backref.h | ||
| ctree.c | ||
| ctree.h | ||
| delayed-ref.c | ||
| delayed-ref.h | ||
| dir-item.c | ||
| disk-io.c | ||
| disk-io.h | ||
| extent_io.c | ||
| extent_io.h | ||
| extent-tree.c | ||
| file-item.c | ||
| file.c | ||
| free-space-cache.c | ||
| free-space-cache.h | ||
| free-space-tree.c | ||
| free-space-tree.h | ||
| inode-item.c | ||
| inode.c | ||
| print-tree.c | ||
| print-tree.h | ||
| root-tree.c | ||
| send.h | ||
| transaction.c | ||
| transaction.h | ||
| ulist.c | ||
| ulist.h | ||
| uuid-tree.c | ||
| volumes.c | ||
| volumes.h | ||
| zoned.c | ||
| zoned.h | ||