From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ee0-f46.google.com ([74.125.83.46]:64447 "EHLO mail-ee0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753929Ab2JMRsX (ORCPT ); Sat, 13 Oct 2012 13:48:23 -0400 Received: by mail-ee0-f46.google.com with SMTP id b15so2383989eek.19 for ; Sat, 13 Oct 2012 10:48:22 -0700 (PDT) From: Goffredo Baroncelli To: Chris Mason Cc: Hugo Mills , Roman Mamedov , =?UTF-8?B?U8OpYmFzdGllbiBNYXVyeQ==?= , Ilya Dryomov , linux-btrfs@vger.kernel.org, Martin Steigerwald Subject: [PATCH][BTRFS-PROGS][V4] btrfs filesystem df Date: Sat, 13 Oct 2012 19:47:39 +0200 Message-Id: <1350150461-11099-1-git-send-email-kreijack@gmail.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hi Chris, this serie of patches updated the command "btrfs filesystem df". I update this command because it is not so easy to get the information about the disk usage from the command "fi df" and "fi show". This patch was the result of some discussions on the btrfs mailing list. Many thanks to all the contributors. from the man page (see 2nd patch): [...] The command btrfs filesystem df is used to query the status of the chunks, how many space on the disk(s) are used by the chunks, how many space are available in the chunks, and an estimation of the free space of the filesystem. [...] $ ./btrfs filesystem df --help usage: btrfs filesystem disk-usage [-k] [..] Show space usage information for a mount point(s). -k Set KB (1024 bytes) as unit $ ./btrfs filesystem df / Path: / Summary: Disk_size: 72.57GB Disk_allocated: 25.10GB Disk_unallocated: 47.48GB Logical_size: 23.06GB Used: 11.01GB Free_(Estimated): 55.66GB (Max: 59.52GB, Min: 35.78GB) Data_to_disk_ratio: 92 % Allocated_area: Type Mode Size_(disk) Size_(logical) Used Data Single 21.01GB 21.01GB 12.77GB System DUP 80.00MB 40.00MB 4.00KB System Single 4.00MB 4.00MB 0.00 Metadata DUP 4.00GB 2.00GB 709.63MB Metadata Single 8.00MB 8.00MB 0.00 Where: Disk_size -> sum of sizes of teh disks Disk_allocated -> sum of chunk sizes Disk_unallocated -> Disk_size - Disk_allocated Logical_size -> sum of logical area sizes Used -> logical area used Free_(Estimated) -> on the basis of allocated chunk, an estrapolation of the free space Data_to_disk_ratio -> ration between the space occuped by a chunk and the real space available ( due to duplication and/or RAID level) Type -> kind of chunk Mode -> allocation policy of a chunk Size_(disk) -> area of disk(s) occuped by the chunk (see it as raw space used) Size_(logical) -> logical area size of the chunk Used -> portion of the logical area used by the filesystem You can pull this change from http://cassiopea.homelinux.net/git/btrfs-progs-unstable.git branch disk_free Please pull. BR Goffredo Baroncelli Changelog: V3->V4 Removed the switch -d -s from getopt(), aligned the column Size_(logical), renamed the fields: - Details -> Allocated_area - Chunk_type -> Type V2->V3 Removed the options '-s' and '-d'; replaced Chunk-size and Logical-size with Size_(disk) and Size_(logical). Update the man page. V1->V2 Uses getopt(); replace "-" with "_"; change the behaviour of the switches '-s' and '-d'. V0->V1 Change the name of command from disk-usage to df