From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from slow1-d.mail.gandi.net ([217.70.178.86]:52703 "EHLO slow1-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753916AbcHSRPZ (ORCPT ); Fri, 19 Aug 2016 13:15:25 -0400 Received: from relay2-d.mail.gandi.net (relay2-d.mail.gandi.net [217.70.183.194]) by slow1-d.mail.gandi.net (Postfix) with ESMTP id 1589347A5A4 for ; Fri, 19 Aug 2016 19:10:29 +0200 (CEST) From: Davide Depau Subject: Balancing subvolume on a specific device To: linux-btrfs@vger.kernel.org Message-ID: Date: Fri, 19 Aug 2016 19:09:48 +0200 MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="DxMba9NM4lKQBgt0udX6ouvV3HxLtWdT5" Sender: linux-btrfs-owner@vger.kernel.org List-ID: This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --DxMba9NM4lKQBgt0udX6ouvV3HxLtWdT5 Content-Type: multipart/mixed; boundary="clJM2lImtmsiuHMIWABhtCrrqcjHnSRie" From: Davide Depau To: linux-btrfs@vger.kernel.org Message-ID: Subject: Balancing subvolume on a specific device --clJM2lImtmsiuHMIWABhtCrrqcjHnSRie Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hello, I have a btrfs filesystem spanning over two drives: an SSD and HDD. Label: 'Android Dev' uuid: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxx Total devices 3 FS bytes used 32.08GiB devid 1 size 21.95GiB used 12.00GiB path /dev/sda2 devid 2 size 33.22GiB used 12.01GiB path /dev/sda3 devid 3 size 53.10GiB used 13.01GiB path /dev/sdb2 (sda is the SSD, sdb is the HDD) I've got these subvolumes in the filesystem: ID 258 gen 708 top level 5 path cm13.0 ID 259 gen 708 top level 5 path ccache ID 269 gen 708 top level 5 path omni I would like the ccache subvol to always be stored on the SSD, unless no disk space is available. Is that possible? Thank you --clJM2lImtmsiuHMIWABhtCrrqcjHnSRie-- --DxMba9NM4lKQBgt0udX6ouvV3HxLtWdT5 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCAAGBQJXtz1kAAoJEIdTK3rbE+XCVt4P/1Quc4se+WG2BIkSPldcwhvy 51Ki68EwmTLsJjSdPiBH08L+6+D9eolx5ftqUnOhKa+ftnSha2nBXLofrfPAYkW5 CX7zCA3Chp/1ryCE561stRozflaPq9dZA+5GtuzFC3bovvwqxB4LTcOoZuJLE3xP tlz+DZ0mrwC46U7IGu5yHG9F2jc+9MH0BL2/pAlLqFCfuXXjdze9q7ni3UsFHJ+a lNNid+KFG6LhSP0qSkJOPx2IVzC4FUg4BpFPaGJkgHikdnZnmh39yFgclzFN/9UF 6MTlkpZbV7o/Lla0sbQPlu+19NQcKb4diISiYNdigTiyjRqqNVul6frFZeXaHci6 3B4HvvJrpABEYMDmWKO+P4UECRjgSSA11pu49t85XFyTIlo24h9ymi7ZRRkoGA1U jENJwig/lF4g0Wn7XjfspRAY5mW85y0yOFlNBeW+qnRRmn6KXEBosCokS+3Qy4kP Nx39KCfj5d9BWjD4EL7+bbXegaIlAhblT5Zva73+NfxJvxRdrEn7SUzZwbDkdVop n3ZXbubr6tSHKjMwAbRyAs0x4PcEbfdgK3tBZOqTlixa4vl9xsFksgPzBM3M3pTi F5usE6Rl/3ozsk0wzjOP+nOb/UrCZYAFVEupflBULu5Uz1zhlumNeklRkNn2F+b2 k/JS1Q5/lehKvez1+1Hs =TIow -----END PGP SIGNATURE----- --DxMba9NM4lKQBgt0udX6ouvV3HxLtWdT5--