From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from fgwmail6.fujitsu.co.jp ([192.51.44.36]:60689 "EHLO fgwmail6.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750886AbaLBIOD (ORCPT ); Tue, 2 Dec 2014 03:14:03 -0500 Received: from kw-mxauth.gw.nic.fujitsu.com (unknown [10.0.237.134]) by fgwmail6.fujitsu.co.jp (Postfix) with ESMTP id 9AE113EE0C0 for ; Tue, 2 Dec 2014 17:14:01 +0900 (JST) Received: from s3.gw.fujitsu.co.jp (s3.gw.fujitsu.co.jp [10.0.50.93]) by kw-mxauth.gw.nic.fujitsu.com (Postfix) with ESMTP id A703EAC02C0 for ; Tue, 2 Dec 2014 17:14:00 +0900 (JST) Received: from g01jpfmpwkw03.exch.g01.fujitsu.local (g01jpfmpwkw03.exch.g01.fujitsu.local [10.0.193.57]) by s3.gw.fujitsu.co.jp (Postfix) with ESMTP id 5861AE08002 for ; Tue, 2 Dec 2014 17:14:00 +0900 (JST) Message-ID: <547D743C.7010905@jp.fujitsu.com> Date: Tue, 2 Dec 2014 17:11:40 +0900 From: Satoru Takeuchi MIME-Version: 1.0 To: Brendan Hide , MegaBrutal CC: linux-btrfs Subject: Re: BTRFS equivalent for tune2fs? References: <547D6ABF.6030608@swiftspirit.co.za> <547D6CA3.7070808@swiftspirit.co.za> In-Reply-To: <547D6CA3.7070808@swiftspirit.co.za> Content-Type: text/plain; charset="UTF-8"; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hi, (2014/12/02 16:39), Brendan Hide wrote: > On 2014/12/02 09:31, Brendan Hide wrote: >> On 2014/12/02 07:54, MegaBrutal wrote: >>> Hi all, >>> >>> I know there is a btrfstune, but it doesn't provide all the >>> functionality I'm thinking of. >>> >>> For ext2/3/4 file systems I can get a bunch of useful data with >>> "tune2fs -l". How can I retrieve the same type of information about a >>> BTRFS file system? (E.g., last mount time, last checked time, blocks >>> reserved for superuser*, etc.) >>> >>> * Anyway, does BTRFS even have an option to reserve X% for the superuser? >> Btrfs does not yet have this option. I'm certain that specific feature is in mind for the future however. >> >> As regards other equivalents, the same/similar answer applies. There simply aren't a lot of tuneables available "right now". >> > Almost forgot about this: btrfs property (get|set) > > Again, there are a lot of features still to be added. > Just FYI. There are some description about this topic. https://btrfs.wiki.kernel.org/index.php/Project_ideas#Set_mount_options_permanently https://btrfs.wiki.kernel.org/index.php/Project_ideas#Extend_btrfstune_to_be_able_to_tune_more_parameters https://btrfs.wiki.kernel.org/index.php/Project_ideas#Filesystem_object_properties Thanks, Satoru