Btrfs: use bigger metadata chunks on bigger filesystems
The 256MB chunk is a little small on a huge FS. This scales up the
chunk size.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index f4b839f..ac00e3a 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2441,7 +2441,11 @@
max_stripe_size = 1024 * 1024 * 1024;
max_chunk_size = 10 * max_stripe_size;
} else if (type & BTRFS_BLOCK_GROUP_METADATA) {
- max_stripe_size = 256 * 1024 * 1024;
+ /* for larger filesystems, use larger metadata chunks */
+ if (fs_devices->total_rw_bytes > 50ULL * 1024 * 1024 * 1024)
+ max_stripe_size = 1024 * 1024 * 1024;
+ else
+ max_stripe_size = 256 * 1024 * 1024;
max_chunk_size = max_stripe_size;
} else if (type & BTRFS_BLOCK_GROUP_SYSTEM) {
max_stripe_size = 8 * 1024 * 1024;