btrfs: unlinked X orphans messages

Hi,

I am using btrfs for remote backups (via rsync), with daily and weekly snapshots.

I see these messages in kern.log:

Jul 18 07:09:43 backup1 kernel: [3437126.458374] btrfs: unlinked 9 orphans
Jul 18 12:01:01 backup1 kernel: [3454604.905856] btrfs: unlinked 1 orphans
Jul 18 13:01:51 backup1 kernel: [3458254.990199] btrfs: unlinked 1 orphans
Jul 19 04:01:41 backup1 kernel: [3512244.236347] btrfs: unlinked 1 orphans

Is this something I have to be afraid of ?

Linux debian lenny, pure btrfs partition with no raid, vanilla kernel:
2.6.34.

Thanks,

Xavier Nicollet

Nothing to worry about.

Yan, Zheng