Btrfs: fix chunk allocate size calculation

If the amount of free space left in a device is less than what we think should be the minimum size, just ignore the minimum size and use the amount we have. I ran into this running tests on a 600mb volume, the chunk allocator wouldn't let me allocate the last 52mb of the disk for data because we want to have at least 64mb chunks for data. This patch fixes that problem. Thanks, Signed-off-by: Josef Bacik <[email protected]> Signed-off-by: Chris Mason <[email protected]>
chewitt · Mar 31, 2010 · 0cad8a1 · 0cad8a1
1 parent 287a0ab
commit 0cad8a1
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
@@ -2244,8 +2244,10 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
 		do_div(calc_size, stripe_len);
 		calc_size *= stripe_len;
 	}
+
 	/* we don't want tiny stripes */
-	calc_size = max_t(u64, min_stripe_size, calc_size);
+	if (!looped)
+		calc_size = max_t(u64, min_stripe_size, calc_size);
 
 	do_div(calc_size, stripe_len);
 	calc_size *= stripe_len;