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Signed-off-by: Johannes Thumshirn --- fs/btrfs/print-tree.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c index 0c93439e929f..f01919e4bb37 100644 --- a/fs/btrfs/print-tree.c +++ b/fs/btrfs/print-tree.c @@ -9,6 +9,7 @@ #include "print-tree.h" #include "accessors.h" #include "tree-checker.h" +#include "raid-stripe-tree.h" struct root_name_map { u64 id; @@ -28,6 +29,7 @@ static const struct root_name_map root_map[] = { { BTRFS_FREE_SPACE_TREE_OBJECTID, "FREE_SPACE_TREE" }, { BTRFS_BLOCK_GROUP_TREE_OBJECTID, "BLOCK_GROUP_TREE" }, { BTRFS_DATA_RELOC_TREE_OBJECTID, "DATA_RELOC_TREE" }, + { BTRFS_RAID_STRIPE_TREE_OBJECTID, "RAID_STRIPE_TREE" }, }; const char *btrfs_root_name(const struct btrfs_key *key, char *buf) @@ -189,6 +191,48 @@ static void print_uuid_item(const struct extent_buffer *l, unsigned long offset, } } +struct raid_encoding_map { + u8 encoding; + char name[16]; +}; + +static const struct raid_encoding_map raid_map[] = { + { BTRFS_STRIPE_DUP, "DUP" }, + { BTRFS_STRIPE_RAID0, "RAID0" }, + { BTRFS_STRIPE_RAID1, "RAID1" }, + { BTRFS_STRIPE_RAID1C3, "RAID1C3" }, + { BTRFS_STRIPE_RAID1C4, "RAID1C4" }, + { BTRFS_STRIPE_RAID5, "RAID5" }, + { BTRFS_STRIPE_RAID6, "RAID6" }, + { BTRFS_STRIPE_RAID10, "RAID10" } +}; + +static const char *stripe_encoding_name(u8 encoding) +{ + for (int i = 0; i < ARRAY_SIZE(raid_map); i++) { + if (raid_map[i].encoding == encoding) + return raid_map[i].name; + } + + return "UNKNOWN"; +} + +static void print_raid_stripe_key(const struct extent_buffer *eb, u32 item_size, + struct btrfs_stripe_extent *stripe) +{ + int num_stripes = btrfs_num_raid_stripes(item_size); + u8 encoding = btrfs_stripe_extent_encoding(eb, stripe); + int i; + + pr_info("\t\t\tencoding: %s\n", stripe_encoding_name(encoding)); + + for (i = 0; i < num_stripes; i++) + pr_info("\t\t\tstride %d devid %llu physical %llu length %llu\n", + i, btrfs_raid_stride_devid(eb, &stripe->strides[i]), + btrfs_raid_stride_physical(eb, &stripe->strides[i]), + btrfs_raid_stride_length(eb, &stripe->strides[i])); +} + /* * Helper to output refs and locking status of extent buffer. Useful to debug * race condition related problems. @@ -349,6 +393,11 @@ void btrfs_print_leaf(const struct extent_buffer *l) print_uuid_item(l, btrfs_item_ptr_offset(l, i), btrfs_item_size(l, i)); break; + case BTRFS_RAID_STRIPE_KEY: + print_raid_stripe_key(l, btrfs_item_size(l, i), + btrfs_item_ptr(l, i, + struct btrfs_stripe_extent)); + break; } } }