From mboxrd@z Thu Jan 1 00:00:00 1970 From: jck Subject: Re: Disk space usage displayed incorrectly? Date: Tue, 13 Jul 2010 10:47:16 +0530 Message-ID: References: <20100713011650.GN563@think> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 To: linux-btrfs@vger.kernel.org Return-path: In-Reply-To: List-ID: I finally understood whats going on, thank you. On Tue, Jul 13, 2010 at 9:32 AM, jck wrote: > I ran btrfs filesystem balance but now it has become like this: > > > Metadata: total=3D5.00GB, used=3D507.25MB > Data: total=3D113.58GB, used=3D89.51GB > System: total=3D32.00MB, used=3D24.00KB > > On Tue, Jul 13, 2010 at 7:23 AM, jck wrote: >> I tested it and the partition gets filled at 123.58 GB, the 60GB is >> getting wasted. is there anything i can do about this? >> >> On Tue, Jul 13, 2010 at 6:46 AM, Chris Mason wrote: >>> On Sat, Jul 10, 2010 at 07:22:26AM +0530, jck wrote: >>>> Hello, >>>> when i check diskspace usage of a btrfs partition using df i get t= he >>>> wrong free space, this is expected i think. >>> >>> We do try to take the raid levels into account during df, but only = for >>> the space that is already allocated. >>> >>>> However even when i use 'btrfs filesystem df' I get wrong freespac= e: >>>> Data: total=3D123.58GB, used=3D87.31GB >>>> Metadata: total=3D61.00GB, used=3D396.29MB >>>> System: total=3D32.00MB, used=3D16.00KB >>>> >>>> Does this mean that after the 123 GB of 'Data' fills up I wont be = able >>>> to add more stuff to the partition? >>>> I'm using btrfs-progs-git (jul 10) >>> >>> This does reflect the space that is allocated, but the drive itself= may >>> have more free space. =A0btrfs filesystem show will give you a few = more >>> details. >>> >>> Basically btrfs allocates from the drive in chunks of about 1GB and= then >>> puts the file data or metadata into those chunks. =A0So if you do a= mkfs >>> and then create one file, you might have 1TB of space on the drive = that >>> hasn't been allocated yet. >>> >>> -chris >>> >>> >> > -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" = in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html