Add dedup tree support for btrfs-debug-tree.
Signed-off-by: Qu Wenruo <quwen...@cn.fujitsu.com>
---
btrfs-debug-tree.c | 4 ++++
ctree.h | 7 +++++++
print-tree.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 63 insertions(+)
diff --git a/btrfs-debug-tree.c b/btrfs-debug-tree.c
index 8adc39f..8b04df1 100644
--- a/btrfs-debug-tree.c
+++ b/btrfs-debug-tree.c
@@ -381,6 +381,10 @@ again:
printf("multiple");
}
break;
+ case BTRFS_DEDUP_TREE_OBJECTID:
+ if (!skip)
+ printf("dedup");
+ break;
default:
if (!skip) {
printf("file");
diff --git a/ctree.h b/ctree.h
index 20305de..eacad7d 100644
--- a/ctree.h
+++ b/ctree.h
@@ -76,6 +76,9 @@ struct btrfs_free_space_ctl;
/* for storing items that use the BTRFS_UUID_KEY* */
#define BTRFS_UUID_TREE_OBJECTID 9ULL
+/* on-disk dedup tree (EXPERIMENTAL) */
+#define BTRFS_DEDUP_TREE_OBJECTID 10ULL
+
/* for storing balance parameters in the root tree */
#define BTRFS_BALANCE_OBJECTID -4ULL
@@ -1180,6 +1183,10 @@ struct btrfs_root {
#define BTRFS_DEV_ITEM_KEY 216
#define BTRFS_CHUNK_ITEM_KEY 228
+#define BTRFS_DEDUP_STATUS_ITEM_KEY 230
+#define BTRFS_DEDUP_HASH_ITEM_KEY 231
+#define BTRFS_DEDUP_BYTENR_ITEM_KEY 232
+
#define BTRFS_BALANCE_ITEM_KEY 248
/*
diff --git a/print-tree.c b/print-tree.c
index 4d4c3a2..b88beef 100644
--- a/print-tree.c
+++ b/print-tree.c
@@ -25,6 +25,7 @@
#include "disk-io.h"
#include "print-tree.h"
#include "utils.h"
+#include "dedup.h"
static void print_dir_item_type(struct extent_buffer *eb,
@@ -658,6 +659,15 @@ static void print_key_type(u64 objectid, u8 type)
case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
printf("UUID_KEY_RECEIVED_SUBVOL");
break;
+ case BTRFS_DEDUP_STATUS_ITEM_KEY:
+ printf("DEDUP_STATUS_ITEM");
+ break;
+ case BTRFS_DEDUP_HASH_ITEM_KEY:
+ printf("DEDUP_HASH_ITEM");
+ break;
+ case BTRFS_DEDUP_BYTENR_ITEM_KEY:
+ printf("DEDUP_BYTENR_ITEM");
+ break;
default:
printf("UNKNOWN.%d", type);
};
@@ -803,6 +813,37 @@ static void print_uuid_item(struct extent_buffer *l,
unsigned long offset,
}
}
+static void print_dedup_status(struct extent_buffer *node, int slot)
+{
+ struct btrfs_dedup_status_item *status_item;
+ u64 blocksize;
+ u64 limit;
+ u16 hash_type;
+ u16 backend;
+
+ status_item = btrfs_item_ptr(node, slot,
+ struct btrfs_dedup_status_item);
+ blocksize = btrfs_dedup_status_blocksize(node, status_item);
+ limit = btrfs_dedup_status_limit(node, status_item);
+ hash_type = btrfs_dedup_status_hash_type(node, status_item);
+ backend = btrfs_dedup_status_backend(node, status_item);
+
+ printf("\t\tdedup status item ");
+ if (backend == BTRFS_DEDUP_BACKEND_INMEMORY)
+ printf("backend: inmemory\n");
+ else if (backend == BTRFS_DEDUP_BACKEND_ONDISK)
+ printf("backend: ondisk\n");
+ else
+ printf("backend: Unrecognized(%u)\n", backend);
+
+ if (hash_type == BTRFS_DEDUP_HASH_SHA256)
+ printf("\t\thash algorithm: SHA-256 ");
+ else
+ printf("\t\thash algorithm: Unrecognized(%u) ", hash_type);
+
+ printf("blocksize: %llu limit: %llu\n", blocksize, limit);
+}
+
void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
{
int i;
@@ -823,6 +864,8 @@ void btrfs_print_leaf(struct btrfs_root *root, struct
extent_buffer *l)
struct btrfs_qgroup_info_item *qg_info;
struct btrfs_qgroup_limit_item *qg_limit;
struct btrfs_qgroup_status_item *qg_status;
+ struct btrfs_dedup_hash_item *hash_item;
+
u32 nr = btrfs_header_nritems(l);
u64 objectid;
u32 type;
@@ -1045,6 +1088,15 @@ void btrfs_print_leaf(struct btrfs_root *root, struct
extent_buffer *l)
case BTRFS_DEV_STATS_KEY:
printf("\t\tdevice stats\n");
break;
+ case BTRFS_DEDUP_STATUS_ITEM_KEY:
+ print_dedup_status(l, i);
+ break;
+ case BTRFS_DEDUP_HASH_ITEM_KEY:
+ hash_item = btrfs_item_ptr(l, i,
+ struct btrfs_dedup_hash_item);
+
+ printf("\t\tdedup hash item num_bytes: %llu\n",
+ btrfs_dedup_hash_len(l, hash_item));
};
fflush(stdout);
}
--
2.6.4
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