From mboxrd@z Thu Jan 1 00:00:00 1970 From: Niklas Schnelle Subject: mv across subvolumes temporarily needs a lot of space Date: Fri, 21 Jan 2011 00:40:48 +0100 Message-ID: <1295566848.7321.5.camel@mercury.localdomain> Mime-Version: 1.0 Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-Izoef8v8csp2jbBolH3a" To: linux-btrfs@vger.kernel.org Return-path: List-ID: --=-Izoef8v8csp2jbBolH3a Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable I was just moving a 40 GB directory across subvolume boundaries, that is /mnt/extern/mac to /mnt/extern/backup/homes/mac backup being a subvolume. I noticed that df will start to show more used space (starting at 130 GB going slowly to 165 GB for the whole disk) then shortly after the operation is done it will show 130 GB again. So I was wondering will I always need as much as 80% of free space available to move some big directory or is it just wrong information by df? Greetings Niklas --=-Izoef8v8csp2jbBolH3a Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQEcBAABAgAGBQJNOMf7AAoJEDAdc1vlpxWMv9wIAI3wPYYGvcMsdWcMC7E21W+X n4yk/EQ/ND3+yDlen5Lx+m5AeHmk3bXyoN6/Qn7rvCHHa73H6iKetSmZ7eDVl3Ur S+0hljfmQa6VzNsIewvmQtFB6D1vC99qDWbE3YL6sXvP6ivktaKru8BnUbN+q9DN qCtrXbIZK0OOWwljHY8yyVl5nKZfMGfdaNmUqV6N1+AbYC1aAep+wC9yJP6AYbHZ Om0f0PIF8UQGapgod+Mp3EV5Nf/djWmL9JXeGnl2AItdTrkpYxYHkL+Huf+YmD2D pumNWvq8ZUJMOVKsJ/Y+M1D8zHybBOmz9pUWAXfijQ+KXtfXKbu7TQ9rTlhLyvo= =TFN/ -----END PGP SIGNATURE----- --=-Izoef8v8csp2jbBolH3a--