Btrfs: add the tree history log to btrfs-progs

[platform/upstream/btrfs-progs.git] / debug-tree.c

diff --git a/debug-tree.c b/debug-tree.c
index 91e0064..2aeabfd 100644 (file)
--- a/debug-tree.c
+++ b/debug-tree.c
@@ -62,6 +62,45 @@ static void print_extents(struct btrfs_root *root, struct extent_buffer *eb)
        }
 }
 
+static void print_old_roots(struct btrfs_super_block *super)
+{
+       struct btrfs_root_backup *backup;
+       int i;
+
+       for (i = 0; i < BTRFS_NUM_BACKUP_ROOTS; i++) {
+               backup = super->super_roots + i;
+               printf("btrfs root backup slot %d\n", i);
+               printf("\ttree root gen %llu block %llu\n",
+                      (unsigned long long)btrfs_backup_tree_root_gen(backup),
+                      (unsigned long long)btrfs_backup_tree_root(backup));
+
+               printf("\t\textent root gen %llu block %llu\n",
+                      (unsigned long long)btrfs_backup_extent_root_gen(backup),
+                      (unsigned long long)btrfs_backup_extent_root(backup));
+
+               printf("\t\tchunk root gen %llu block %llu\n",
+                      (unsigned long long)btrfs_backup_chunk_root_gen(backup),
+                      (unsigned long long)btrfs_backup_chunk_root(backup));
+
+               printf("\t\tdevice root gen %llu block %llu\n",
+                      (unsigned long long)btrfs_backup_dev_root_gen(backup),
+                      (unsigned long long)btrfs_backup_dev_root(backup));
+
+               printf("\t\tcsum root gen %llu block %llu\n",
+                      (unsigned long long)btrfs_backup_csum_root_gen(backup),
+                      (unsigned long long)btrfs_backup_csum_root(backup));
+
+               printf("\t\tfs root gen %llu block %llu\n",
+                      (unsigned long long)btrfs_backup_fs_root_gen(backup),
+                      (unsigned long long)btrfs_backup_fs_root(backup));
+
+               printf("\t\t%llu used %llu total %llu devices\n",
+                      (unsigned long long)btrfs_backup_bytes_used(backup),
+                      (unsigned long long)btrfs_backup_total_bytes(backup),
+                      (unsigned long long)btrfs_backup_num_devices(backup));
+       }
+}
+
 int main(int ac, char **av)
 {
        struct btrfs_root *root;
@@ -77,6 +116,7 @@ int main(int ac, char **av)
        int extent_only = 0;
        int device_only = 0;
        int roots_only = 0;
+       int root_backups = 0;
        u64 block_only = 0;
        struct btrfs_root *tree_root_scan;
 
@@ -84,7 +124,7 @@ int main(int ac, char **av)
 
        while(1) {
                int c;
-               c = getopt(ac, av, "deb:r");
+               c = getopt(ac, av, "deb:rR");
                if (c < 0)
                        break;
                switch(c) {
@@ -97,6 +137,10 @@ int main(int ac, char **av)
                        case 'r':
                                roots_only = 1;
                                break;
+                       case 'R':
+                               roots_only = 1;
+                               root_backups = 1;
+                               break;
                        case 'b':
                                block_only = atoll(optarg);
                                break;
@@ -289,6 +333,9 @@ again:
        if (extent_only || device_only)
                return 0;
 
+       if (root_backups)
+               print_old_roots(&root->fs_info->super_copy);
+
        printf("total bytes %llu\n",
               (unsigned long long)btrfs_super_total_bytes(&root->fs_info->super_copy));
        printf("bytes used %llu\n",