From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56048) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XTu1y-0003QL-ID for qemu-devel@nongnu.org; Tue, 16 Sep 2014 10:47:07 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XTu1p-0003a8-HB for qemu-devel@nongnu.org; Tue, 16 Sep 2014 10:46:58 -0400 Received: from mail-wg0-x22a.google.com ([2a00:1450:400c:c00::22a]:34271) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XTu1p-0003a4-9U for qemu-devel@nongnu.org; Tue, 16 Sep 2014 10:46:49 -0400 Received: by mail-wg0-f42.google.com with SMTP id x12so5508083wgg.13 for ; Tue, 16 Sep 2014 07:46:45 -0700 (PDT) Date: Tue, 16 Sep 2014 15:46:42 +0100 From: Stefan Hajnoczi Message-ID: <20140916144642.GE10303@stefanha-thinkpad.redhat.com> References: <3B064E40-49ED-487A-A4ED-EA57B2ED05D3@163.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="vv4Sf/kQfcwinyKX" Content-Disposition: inline In-Reply-To: <3B064E40-49ED-487A-A4ED-EA57B2ED05D3@163.com> Subject: Re: [Qemu-devel] Data classification in Qemu List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Wu Libin Cc: qemu-devel@nongnu.org --vv4Sf/kQfcwinyKX Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Sep 16, 2014 at 12:06:21AM +0800, Wu Libin wrote: > I=E2=80=99m wondering if the Qemu has the data classification function.I = means it can classify the file size like 4K, 8K, 16K,=E2=80=A6,4M,=E2=80=A6= 1G, and do some cache policies with SSD. >=20 > Anyone can tell me about this? I search the list and find nothing. Sorry = if it already exists on the mail list. Not sure what you are trying to do. QEMU system emulation only deals with block devices, it is not aware of the file system inside the guest. Have you looked at dm-cache which can be used with LVM? Stefan --vv4Sf/kQfcwinyKX Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAEBAgAGBQJUGE1SAAoJEJykq7OBq3PIwoQIAISAE34z5l+asdyWQa+2KIYX J5tJlFAADWnR6wTcAlQsFhu7zZ5x7uOWnPxU8KSH/Vw/jrrnxFs+DbfCD470R1xp 2Ur26evAkW2ahozkxx5ozrykqN5FUxszmqIYTgT+LgtUF/YjiZJ3PSMnsBkyD/ce FMPCVJ4D4ngsD//dWlyBRhDtj4IuTLxNZ1VrBNt/qfravIkrhnJhyxpqMLyPgRSh EEOkVgQgcNhk27IdjFrGrCWuot/GY+mJqbkLpVOgQsKCGzXP5LUVqLEfQ24NMF76 2yOEQl66+++yJV9dYVb4sCcYKJ/hHXLE7BVVC88FlZo2kGNAHOXx/eXqiqAVPmM= =QjCf -----END PGP SIGNATURE----- --vv4Sf/kQfcwinyKX--