@@ -1721,8 +1721,14 @@ static int do_chunk_alloc(struct btrfs_trans_handle *trans,
return 0;
trans->allocating_chunk = 1;
- ret = btrfs_alloc_chunk(trans, fs_info, &start, &num_bytes,
- space_info->flags);
+ /*
+ * The space_info only has block group type (data/meta/sys), doesn't
+ * have the proper profile.
+ * While we still want to handle mixed block groups properly.
+ * So here add the extra bits for mixed profile.
+ */
+ flags |= space_info->flags;
+ ret = btrfs_alloc_chunk(trans, fs_info, &start, &num_bytes, flags);
if (ret == -ENOSPC) {
space_info->full = 1;
trans->allocating_chunk = 0;
@@ -1731,8 +1737,8 @@ static int do_chunk_alloc(struct btrfs_trans_handle *trans,
BUG_ON(ret);
- ret = btrfs_make_block_group(trans, fs_info, 0, space_info->flags,
- start, num_bytes);
+ ret = btrfs_make_block_group(trans, fs_info, 0, flags, start,
+ num_bytes);
BUG_ON(ret);
trans->allocating_chunk = 0;
return 0;
[BUG] There is a bug report that using DUP data profile, with a 400MiB source dir, on a 7G disk leads to mkfs failure caused by ENOSPC. [CAUSE] After some debugging, it turns out that do_chunk_alloc() is always passing SINGLE profile for new chunks. The offending code looks like: extent-tree.c:: do_chunk_alloc() ret = btrfs_alloc_chunk(trans, fs_info, &start, &num_bytes, space_info->flags); However since commit bce7dbba2859 ("Btrfs-progs: only build space info's for the main flags"), we no longer store the profile bits in space_info anymore. This makes space_info never get updated properly, and causing us to creating more and more chunks to eat up most of the disk with unused SINGLE chunks, and finally leads to ENOSPC. [FIX] Fix the bug by passing the proper flags to btrfs_alloc_chunk(). Also, to address the original problem commit 2689259501c1 ("btrfs progs: fix extra metadata chunk allocation in --mixed case") tries to fix, here we do extra bit OR to ensure we get the proper flags. Issue: #258 Signed-off-by: Qu Wenruo <wqu@suse.com> --- extent-tree.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-)