From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mailgw-01.dd24.net ([193.46.215.41]:57365 "EHLO mailgw-01.dd24.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753630AbbLNXQZ (ORCPT ); Mon, 14 Dec 2015 18:16:25 -0500 Received: from mailpolicy-01.live.igb.homer.key-systems.net (mailpolicy-02.live.igb.homer.key-systems.net [192.168.1.27]) by mailgw-01.dd24.net (Postfix) with ESMTP id 8BB585FC16 for ; Mon, 14 Dec 2015 23:16:24 +0000 (UTC) Received: from mailgw-01.dd24.net ([192.168.1.35]) by mailpolicy-01.live.igb.homer.key-systems.net (mailpolicy-02.live.igb.homer.key-systems.net [192.168.1.25]) (amavisd-new, port 10235) with ESMTP id k-bRs52Z64w6 for ; Mon, 14 Dec 2015 23:16:22 +0000 (UTC) Received: from heisenberg.fritz.box (ppp-93-104-122-99.dynamic.mnet-online.de [93.104.122.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mailgw-01.dd24.net (Postfix) with ESMTPSA for ; Mon, 14 Dec 2015 23:16:22 +0000 (UTC) Message-ID: <1450134982.6629.60.camel@scientia.net> Subject: project idea: per-object default mount-options / more btrfs-properties / chattr attributes (was: btrfs: poor performance on deleting many large files) From: Christoph Anton Mitterer To: linux-btrfs@vger.kernel.org Date: Tue, 15 Dec 2015 00:16:22 +0100 In-Reply-To: <566F261F.4040705@gmail.com> References: <1448488198.4717.4.camel@gmail.com> <1448562347.8809.16.camel@scientia.net> <1448582805.11377.9.camel@scientia.net> <1448683025.6837.4.camel@scientia.net> <1449958538.15961.3.camel@scientia.net> <566ED124.30803@gmail.com> <1450121957.6629.41.camel@scientia.net> <566F261F.4040705@gmail.com> Content-Type: multipart/signed; micalg="sha-512"; protocol="application/x-pkcs7-signature"; boundary="=-6XOWnwfyg1djGcFJTdPq" Mime-Version: 1.0 Sender: linux-btrfs-owner@vger.kernel.org List-ID: --=-6XOWnwfyg1djGcFJTdPq Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Just FYI: On Mon, 2015-12-14 at 15:27 -0500, Austin S. Hemmelgarn wrote: > > My idea would be basically, that having a noatime btrfs-property, > > which > > is perhaps even set automatically, would be an elegant way of doing > > that. > > I just haven't had time to properly write that up and add is as a > > "feature request" to the projects idea wiki page. > I like this idea. I've just compiled some thoughts and ideas into: https://btrfs.wiki.kernel.org/index.php/Project_ideas#Per-object_default_mo= unt-options_.2F_btrfs-properties_.2F_chattr.281.29_attributes_and_reasonabl= e_userland_defaults As usual, this is mostly from my admin/end-user side, i.e. what I could imagine would ease in the maintenance of large/complex (in terms of subvols, nesting, snapshots) btrfs filesystems... And of course, any developer or more expert user than me is happily invited to comment/remove any (possibly stupid) ideas of mine therein, or summon the inquisition for my heresy ;) Cheers, Chris. --=-6XOWnwfyg1djGcFJTdPq Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgMFADCABgkqhkiG9w0BBwEAAKCCEZIw ggW/MIIDp6ADAgECAgMCOakwDQYJKoZIhvcNAQENBQAwVDEUMBIGA1UEChMLQ0FjZXJ0IEluYy4x HjAcBgNVBAsTFWh0dHA6Ly93d3cuQ0FjZXJ0Lm9yZzEcMBoGA1UEAxMTQ0FjZXJ0IENsYXNzIDMg Um9vdDAeFw0xNDA2MTIxNjM2MThaFw0xNjA2MTExNjM2MThaMHwxITAfBgNVBAMTGENocmlzdG9w aCBBbnRvbiBNaXR0ZXJlcjEkMCIGCSqGSIb3DQEJARYVY2FsZXN0eW9Ac2NpZW50aWEubmV0MTEw LwYJKoZIhvcNAQkBFiJtYWlsQGNocmlzdG9waC5hbnRvbi5taXR0ZXJlci5uYW1lMIIBIjANBgkq hkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA4phP/j9vT9dZT+k3ffHxvRWMOuzBnu5O3Fl4y2+WL7pL rfLiEhWzGXhHvjSqpt4vCNSdqy43453nnu8+hMb+uEtqSIL1AHU5eLhuDNVN9S4bt9E7nA2WKYBU 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