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btrfs-debug-tree: add -d option to print only the device mapping 

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2010-10-06 09:53:38 -04:00
parent 0f49c426fb
commit 1b444cd2e6
1 changed files with 17 additions and 14 deletions
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31
debug-tree.c
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@ -116,6 +116,7 @@ int main(int ac, char **av)
int ret;
int slot;
int extent_only = 0;
int device_only = 0;
u64 block_only = 0;
struct btrfs_root *tree_root_scan;
@ -123,13 +124,16 @@ int main(int ac, char **av)
while(1) {
int c;
c = getopt(ac, av, "eb:");
c = getopt(ac, av, "deb:");
if (c < 0)
break;
switch(c) {
case 'e':
extent_only = 1;
break;
case 'd':
device_only = 1;
break;
case 'b':
block_only = atoll(optarg);
break;
@ -202,7 +206,7 @@ again:
if (btrfs_key_type(&found_key) == BTRFS_ROOT_ITEM_KEY) {
unsigned long offset;
struct extent_buffer *buf;
int skip = extent_only;
int skip = extent_only | device_only;
offset = btrfs_item_ptr_offset(leaf, slot);
read_extent_buffer(leaf, &ri, offset, sizeof(ri));
@ -215,8 +219,9 @@ again:
printf("root");
break;
case BTRFS_EXTENT_TREE_OBJECTID:
skip = 0;
if (!extent_only)
if (!device_only)
skip = 0;
if (!extent_only && !device_only)
printf("extent");
break;
case BTRFS_CHUNK_TREE_OBJECTID:
@ -225,9 +230,8 @@ again:
}
break;
case BTRFS_DEV_TREE_OBJECTID:
if (!skip) {
printf("device");
}
skip = 0;
printf("device");
break;
case BTRFS_FS_TREE_OBJECTID:
if (!skip) {
@ -235,9 +239,8 @@ again:
}
break;
case BTRFS_ROOT_TREE_DIR_OBJECTID:
if (!skip) {
printf("directory");
}
skip = 0;
printf("directory");
break;
case BTRFS_CSUM_TREE_OBJECTID:
if (!skip) {
@ -283,13 +286,13 @@ again:
printf("file");
}
}
if (!skip && !extent_only) {
if (extent_only && !skip) {
print_extents(tree_root_scan, buf);
} else if (!skip) {
printf(" tree ");
btrfs_print_key(&disk_key);
printf(" \n");
btrfs_print_tree(tree_root_scan, buf, 1);
} else if (extent_only && !skip) {
print_extents(tree_root_scan, buf);
}
}
path.slots[0]++;
@ -302,7 +305,7 @@ again:
goto again;
}
if (extent_only)
if (extent_only || device_only)
return 0;
printf("total bytes %llu\n",