diff mbox series

[RFC,v3,06/11] btrfs: add raid stripe tree pretty printer

Message ID 5574796b1656045504f2d5c52bab4e85fb9d1b8d.1666007330.git.johannes.thumshirn@wdc.com (mailing list archive)
State New, archived
Headers show
Series btrfs: raid-stripe-tree draft patches | expand

Commit Message

Johannes Thumshirn Oct. 17, 2022, 11:55 a.m. UTC 
Decode raid-stripe-tree entries on btrfs_print_tree().

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
---
 fs/btrfs/print-tree.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

Comments

Josef Bacik Oct. 20, 2022, 3:34 p.m. UTC | #1 
On Mon, Oct 17, 2022 at 04:55:24AM -0700, Johannes Thumshirn wrote:
> Decode raid-stripe-tree entries on btrfs_print_tree().
> 
> Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>

Reviewed-by: Josef Bacik <josef@toxicpanda.com>

Thanks,

Josef
diff mbox series

Patch

diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c
index dd8777872143..1c781a30fd60 100644
--- a/fs/btrfs/print-tree.c
+++ b/fs/btrfs/print-tree.c
@@ -6,6 +6,7 @@ 
 #include "ctree.h"
 #include "disk-io.h"
 #include "print-tree.h"
+#include "raid-stripe-tree.h"
 
 struct root_name_map {
 	u64 id;
@@ -25,6 +26,7 @@  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)
@@ -184,6 +186,20 @@  static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
 	}
 }
 
+static void print_raid_stripe_key(struct extent_buffer *eb, u32 item_size,
+				  struct btrfs_dp_stripe *stripe)
+{
+	int num_stripes;
+	int i;
+
+	num_stripes = item_size / sizeof(struct btrfs_stripe_extent);
+
+	for (i = 0; i < num_stripes; i++)
+		pr_info("\t\t\tstripe %d devid %llu physical %llu\n", i,
+			btrfs_stripe_extent_devid_nr(eb, stripe, i),
+			btrfs_stripe_extent_physical_nr(eb, stripe, i));
+}
+
 /*
  * Helper to output refs and locking status of extent buffer.  Useful to debug
  * race condition related problems.
@@ -348,6 +364,11 @@  void btrfs_print_leaf(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_dp_stripe));
+			break;
 		}
 	}
 }