diff mbox

Btrfs: stop refusing the relocation of chunk 0

Message ID 1377600644-10349-1-git-send-email-idryomov@gmail.com (mailing list archive)
State Accepted, archived
Headers show

Commit Message

Ilya Dryomov Aug. 27, 2013, 10:50 a.m. UTC
AFAICT chunk 0 is no longer special, and so it should be restriped just
like every other chunk.  One reason for this change is us refusing the
relocation can lead to filesystems that can only be mounted ro, and
never rw -- see the bugzilla [1] for details.  The other reason is that
device removal code is already doing this: it will happily relocate
chunk 0 is part of shrinking the device.

[1] https://bugzilla.kernel.org/show_bug.cgi?id=60594

Reported-by: Xavier Bassery <xavier@bartica.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
---
 fs/btrfs/volumes.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
diff mbox

Patch

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index c9a0977..e8325de 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2991,10 +2991,6 @@  again:
 		if (found_key.objectid != key.objectid)
 			break;
 
-		/* chunk zero is special */
-		if (found_key.offset == 0)
-			break;
-
 		chunk = btrfs_item_ptr(leaf, slot, struct btrfs_chunk);
 
 		if (!counting) {
@@ -3030,6 +3026,8 @@  again:
 			spin_unlock(&fs_info->balance_lock);
 		}
 loop:
+		if (found_key.offset == 0)
+			break;
 		key.offset = found_key.offset - 1;
 	}