By the way, i think it'd be useful if debug-tree would tell which policy
the fs is applying to each chunk. Something like this:
item 4 key (FIRST_CHUNK_TREE CHUNK_ITEM 8379826176) itemoff 3495 itemsize 112
chunk length 319881216 owner 2 type 17 (data on RAID1) num_stripes 2
stripe 0 devid 2 offset 2265382912
stripe 1 devid 1 offset 989003776
Index: btrfs-progs-unstable/print-tree.c
===================================================================
--- btrfs-progs-unstable.orig/print-tree.c 2009-10-07 16:44:53.013210615 +0200
+++ btrfs-progs-unstable/print-tree.c 2009-10-07 21:37:46.162546261 +0200
@@ -79,15 +79,37 @@
return 0;
}
+static void print_chunk_type(u64 chunk_flags)
+{
+ printf(" type %llu (", chunk_flags);
+
+ if (chunk_flags & BTRFS_BLOCK_GROUP_DATA)
+ printf("data");
+ if (chunk_flags & BTRFS_BLOCK_GROUP_METADATA)
+ printf("metadata");
+ if (chunk_flags & BTRFS_BLOCK_GROUP_SYSTEM)
+ printf("system??");
+ if (chunk_flags & BTRFS_BLOCK_GROUP_DUP)
+ printf("dup??");
+ if (chunk_flags & BTRFS_BLOCK_GROUP_RAID0)
+ printf(" on RAID0");
+ if (chunk_flags & BTRFS_BLOCK_GROUP_RAID1)
+ printf(" on RAID1");
+ if (chunk_flags & BTRFS_BLOCK_GROUP_RAID10)
+ printf(" on RAID10");
+ printf(") ");
+}
+
static void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
{
int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
int i;
- printf("\t\tchunk length %llu owner %llu type %llu num_stripes %d\n",
+ printf("\t\tchunk length %llu owner %llu",
(unsigned long long)btrfs_chunk_length(eb, chunk),
- (unsigned long long)btrfs_chunk_owner(eb, chunk),
- (unsigned long long)btrfs_chunk_type(eb, chunk),
- num_stripes);
+ (unsigned long long)btrfs_chunk_owner(eb, chunk));
+ print_chunk_type((unsigned long long)btrfs_chunk_type(eb, chunk));
+ printf("num_stripes %d\n", num_stripes);
+
for (i = 0 ; i < num_stripes ; i++) {
printf("\t\t\tstripe %d devid %llu offset %llu\n", i,
(unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i),
--
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