* Disk space usage displayed incorrectly? @ 2010-07-10 1:52 jck 2010-07-13 1:16 ` Chris Mason 0 siblings, 1 reply; 6+ messages in thread From: jck @ 2010-07-10 1:52 UTC (permalink / raw) To: linux-btrfs Hello, when i check diskspace usage of a btrfs partition using df i get the wrong free space, this is expected i think. However even when i use 'btrfs filesystem df' I get wrong freespace: Data: total=123.58GB, used=87.31GB Metadata: total=61.00GB, used=396.29MB System: total=32.00MB, used=16.00KB 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) ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Disk space usage displayed incorrectly? 2010-07-10 1:52 Disk space usage displayed incorrectly? jck @ 2010-07-13 1:16 ` Chris Mason 2010-07-13 1:53 ` jck 0 siblings, 1 reply; 6+ messages in thread From: Chris Mason @ 2010-07-13 1:16 UTC (permalink / raw) To: jck; +Cc: linux-btrfs 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 the > 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 freespace: > Data: total=123.58GB, used=87.31GB > Metadata: total=61.00GB, used=396.29MB > System: total=32.00MB, used=16.00KB > > 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. btrfs 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. So 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 ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Disk space usage displayed incorrectly? 2010-07-13 1:16 ` Chris Mason @ 2010-07-13 1:53 ` jck 2010-07-13 4:02 ` jck 0 siblings, 1 reply; 6+ messages in thread From: jck @ 2010-07-13 1:53 UTC (permalink / raw) To: Chris Mason, jck, linux-btrfs 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 <chris.mason@oracle.com> w= rote: > 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 the >> wrong free space, this is expected i think. > > We do try to take the raid levels into account during df, but only fo= r > the space that is already allocated. > >> However even when i use 'btrfs filesystem df' I get wrong freespace: >> 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 ab= le >> 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 m= ay > have more free space. =A0btrfs filesystem show will give you a few mo= re > details. > > Basically btrfs allocates from the drive in chunks of about 1GB and t= hen > puts the file data or metadata into those chunks. =A0So if you do a m= kfs > and then create one file, you might have 1TB of space on the drive th= at > 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 ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Disk space usage displayed incorrectly? 2010-07-13 1:53 ` jck @ 2010-07-13 4:02 ` jck 2010-07-13 5:17 ` jck 0 siblings, 1 reply; 6+ messages in thread From: jck @ 2010-07-13 4:02 UTC (permalink / raw) To: linux-btrfs 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 <jck@archlinux.us> 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 <chris.mason@oracle.com>= 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 th= e >>> wrong free space, this is expected i think. >> >> We do try to take the raid levels into account during df, but only f= or >> the space that is already allocated. >> >>> However even when i use 'btrfs filesystem df' I get wrong freespace= : >>> 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 a= ble >>> 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 m= ore >> 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 t= hat >> 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 ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Disk space usage displayed incorrectly? 2010-07-13 4:02 ` jck @ 2010-07-13 5:17 ` jck 0 siblings, 0 replies; 6+ messages in thread From: jck @ 2010-07-13 5:17 UTC (permalink / raw) To: linux-btrfs I finally understood whats going on, thank you. On Tue, Jul 13, 2010 at 9:32 AM, jck <jck@archlinux.us> 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 <jck@archlinux.us> 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 <chris.mason@oracle.com= > 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 ^ permalink raw reply [flat|nested] 6+ messages in thread
[parent not found: <AANLkTinA2QCqlrGoRvUn_uAZ1NxPm65DksQQ9YBeHrqh@mail.gmail.com>]
* Disk space usage displayed incorrectly? [not found] <AANLkTinA2QCqlrGoRvUn_uAZ1NxPm65DksQQ9YBeHrqh@mail.gmail.com> @ 2010-07-10 1:42 ` jck 0 siblings, 0 replies; 6+ messages in thread From: jck @ 2010-07-10 1:42 UTC (permalink / raw) To: linux-btrfs Hello, when i check diskspace usage of a btrfs partition using df i get the wrong free space, this is expected i think. However even when i use 'btrfs filesystem df' I get wrong freespace: Data: total=123.58GB, used=87.31GB Metadata: total=61.00GB, used=396.29MB System: total=32.00MB, used=16.00KB 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) ^ permalink raw reply [flat|nested] 6+ messages in thread
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2010-07-10 1:52 Disk space usage displayed incorrectly? jck
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