Re: goofy results for df

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I think the result reported by df is correct. It's likely you have
lots of sparse files in cephfs.
For sparse files, cephfs increase the "used" space by the full file size. See
http://ceph.com/docs/next/dev/differences-from-posix/

Yan, Zheng

On Fri, Feb 21, 2014 at 6:13 PM, Markus Goldberg
<goldberg@xxxxxxxxxxxxxxxxx> wrote:
> Hi,
> this is ceph 0.77, Ubuntu 13.04  (ceph-server and ceph client)
>
> df-command gives goofy results:
>
> root@bd-a:/mnt/myceph/Backup/bs3/tapes#
> root@bd-a:/mnt/myceph/Backup/bs3/tapes# df -h .
> Dateisystem           GröÃe Benutzt Verf. Verw% Eingehängt auf
> xxx.xxx.xxx.xxx:6789:/   60T    6,6G   60T    1% /mnt/myceph
>                                 ^^^^   ^^^^   ^^ these are wrong
> root@bd-a:/mnt/myceph/Backup/bs3/tapes#
> root@bd-a:/mnt/myceph/Backup/bs3/tapes# du -h -s .
> 21T     .
> ^^^^ this seems to be correct
> root@bd-a:/mnt/myceph/Backup/bs3/tapes#
> root@bd-a:/mnt/myceph/Backup/bs3/tapes# uname -a
> Linux bd-a 3.13.0-031300-generic #201401192235 SMP Mon Jan 20 03:36:48 UTC
> 2014 x86_64 x86_64 x86_64 GNU/Linux
> root@bd-a:/mnt/myceph/Backup/bs3/tapes#
> root@bd-a:/mnt/myceph/Backup/bs3/tapes# ls -la
> insgesamt 22117769963
> drwxr-xr-x 1 root root       22648596429481 Feb 21 10:46 .
> drwx------ 1 root root       24834888278999 Feb  4 15:02 ..
> drwxr-x--x 1 root 4294967294              0 Feb  7 20:15 bacula-restores
> -rw-r----- 1 root 4294967294    76454826838 Dez 31 07:10 Catalog-0001
> -rw-r----- 1 root 4294967294    65248415569 Jan  7 07:08 Catalog-0002
> -rw-r----- 1 root 4294967294    42039633864 Jan 14 07:08 Catalog-0003
> -rw-r----- 1 root 4294967294    27403135157 Jan 21 10:41 Catalog-0004
> -rw-r----- 1 root 4294967294     9995908616 Jan 23 07:06 Catalog-0005
> -rw-r----- 1 root 4294967294    20263232478 Feb  7 07:04 Catalog-0006
> -rw-r----- 1 root 4294967294    14901514585 Feb 19 07:03 Catalog-0007
> -rw-r----- 1 root 4294967294    40192504928 Dez  6 07:11 Catalog-0008
> -rw-r----- 1 root 4294967294    70244536755 Dez 17 07:12 Catalog-0009
> -rw-r----- 1 root 4294967294    85482187783 Dez 24 07:11 Catalog-0010
> -rw-r----- 1 root 4294967294    31891872124 Feb 22  2013 Scratch
> -rw-r----- 1 root 4294967294    36370677079 Feb 13 22:40
> Unix-Server-Daily-0001
> -rw-r----- 1 root 4294967294      714034085 Mai  6  2012
> Unix-Server-Daily-0002
> -rw-r----- 1 root 4294967294   145436042521 Jan 28 07:19
> Unix-Server-Daily-0003
> -rw-r----- 1 root 4294967294   149923349851 Jan 30 07:40
> Unix-Server-Daily-0004
> -rw-r----- 1 root 4294967294   198304422831 Feb  7 06:34
> Unix-Server-Daily-0005
> -rw-r----- 1 root 4294967294    19444196791 Feb 19 22:06
> Unix-Server-Daily-0092
> -rw-r----- 1 root 4294967294   467995422182 Jan  4 17:10
> Unix-Server-Weekly-0001
> -rw-r----- 1 root 4294967294  3137369152887 Jan 12 17:09
> Unix-Server-Weekly-0002
> -rw-r----- 1 root 4294967294  2400846517281 Jan 19 03:58
> Unix-Server-Weekly-0003
> -rw-r----- 1 root 4294967294   285489630070 Jan 29 19:17
> Unix-Server-Weekly-0004
> -rw-r----- 1 root 4294967294            616 Feb 20 22:00
> Unix-Server-Weekly-0005
> -rw-r----- 1 root 4294967294  1702885896192 Feb  3 10:57
> Unix-Server-Weekly-0006
> -rw-r----- 1 root 4294967294  1618012594574 Feb  8 15:51
> Unix-Server-Weekly-0007
> -rw-r----- 1 root 4294967294  2361448742912 Dez 29 00:08
> Unix-Server-Weekly-0008
> -rw-r----- 1 root 4294967294    96000244646 Dez 29 06:09
> Unix-Server-Weekly-0009
> -rw-r----- 1 root 4294967294  1198647656448 Jan  4 11:25
> Unix-Server-Weekly-0010
> -rw-r----- 1 root 4294967294    22232077996 Dez  4  2009 Unix-Sys-0001
> -rw-r----- 1 root 4294967294    10576799936 Mär 14  2013
> Unix-Test-Weekly-0001
> -rw-r----- 1 root 4294967294        6035622 Okt 23  2009
> Unix-Test-Weekly-0002
> -rw-r----- 1 root 4294967294   564820105159 Okt 22 08:30
> Unix-Test-Weekly-0003
> -rw-r----- 1 root 4294967294            211 Okt 22 17:42
> Unix-Test-Weekly-0004
> -rw-r----- 1 root 4294967294  2116314613179 Nov  1 17:05
> Unix-Test-Weekly-0005
> -rw-r----- 1 root 4294967294     3703173898 Aug  9  2012
> Windows-Host-Daily-0001
> -rw-r----- 1 root 4294967294     2190540237 Aug 17  2012
> Windows-Host-Daily-0002
> -rw-r----- 1 root 4294967294    16432919721 Jul 20  2012
> Windows-Host-Daily-0003
> -rw-r----- 1 root 4294967294     4311225811 Jul 27  2012
> Windows-Host-Daily-0004
> -rw-r----- 1 root 4294967294         516310 Mär 24  2010
> Windows-Host-Daily-0005
> -rw-r----- 1 root 4294967294     4568702933 Aug  3  2012
> Windows-Host-Daily-0006
> -rw-r----- 1 root 4294967294   603436637749 Jul 25  2012
> Windows-Host-Weekly-0001
> -rw-r----- 1 root 4294967294     1167166344 Aug  6  2012
> Windows-Host-Weekly-0002
> -rw-r----- 1 root 4294967294            216 Aug 13  2012
> Windows-Host-Weekly-0003
> -rw-r----- 1 root 4294967294   590067676526 Jun 26  2012
> Windows-Host-Weekly-0004
> -rw-r----- 1 root 4294967294   108949289831 Jul 10  2012
> Windows-Host-Weekly-0005
> -rw-r----- 1 root 4294967294              0 Mär 23  2010
> Windows-Host-Weekly-0044
> -rw-r----- 1 root 4294967294     6364808850 Feb 25  2013
> Windows-Server-Daily-0001
> -rw-r----- 1 root 4294967294    31860352659 Jan 25  2013
> Windows-Server-Daily-0002
> -rw-r----- 1 root 4294967294    31862353031 Feb  1  2013
> Windows-Server-Daily-0003
> -rw-r----- 1 root 4294967294    31867469032 Feb  8  2013
> Windows-Server-Daily-0004
> -rw-r----- 1 root 4294967294    97386881267 Feb 15  2013
> Windows-Server-Daily-0005
> -rw-r----- 1 root 4294967294            221 Jun  9  2010
> Windows-Server-Weekly-0001
> -rw-r----- 1 root 4294967294   969923439848 Feb  3  2013
> Windows-Server-Weekly-0002
> -rw-r----- 1 root 4294967294   803039973291 Feb 10  2013
> Windows-Server-Weekly-0003
> -rw-r----- 1 root 4294967294   974033659746 Jan 27  2013
> Windows-Server-Weekly-0004
> -rw-r----- 1 root 4294967294   678319354693 Feb 17  2013
> Windows-Server-Weekly-0005
> -rw-r----- 1 root 4294967294   668556441049 Feb 24  2013
> Windows-Server-Weekly-0006
> -rw-r----- 1 root 4294967294            213 Apr  7  2010
> Windows-Test-Weekly-
> -rw-r----- 1 root 4294967294     1357686193 Nov 17  2010
> Windows-Test-Weekly-0001
> -rw-r----- 1 root 4294967294     1810891151 Mär  8  2012
> Windows-Test-Weekly-0002
> -rw-r----- 1 root 4294967294      418130223 Jun  4  2010
> Windows-Test-Weekly-0003
> -rw-r----- 1 root 4294967294       11156001 Jun  8  2010
> Windows-Test-Weekly-0004
> -rw-r----- 1 root 4294967294            671 Nov 11  2010
> Windows-Test-Weekly-0005
> root@bd-a:/mnt/myceph/Backup/bs3/tapes#
>
> I have not counted all filesizes, but 21T seems to be correct
>
> --
> MfG,
>   Markus Goldberg
>
> --------------------------------------------------------------------------
> Markus Goldberg       Universität Hildesheim
>                       Rechenzentrum
> Tel +49 5121 88392822 Marienburger Platz 22, D-31141 Hildesheim, Germany
> Fax +49 5121 88392823 email goldberg@xxxxxxxxxxxxxxxxx
> --------------------------------------------------------------------------
>
>
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