df, lvm and 6TB arrays oh my!

Tony Nelson tonynelson at georgeanelson.com
Sat Feb 11 20:17:53 UTC 2006


At 11:26 AM -0500 2/11/06, Mark Haney wrote:
>I am having a problem with df reporting the wrong disk size on a couple
>of 7TB arrays on a Fedora box we are using.  I have an lvm group on each
>array of 6.36TB  when I run  df this is what I get:
>
>/dev/mapper/Volume02-Volume02lv
>                      2.4T   33M  2.3T   1% /mnt/arrays/array2
>/dev/mapper/Volume03-Volume03lv
>                      2.4T  950G  1.3T  43% /mnt/arrays/array1
>
>
>When I run vg display this is what it reports:
>
>pvdisplay  PV Name               /dev/sdd
>pvdisplay  VG Name               Volume03
>pvdisplay  PV Size               6.36 TB / not usable 6.00 TB
>pvdisplay  Allocatable           yes (but full)
>pvdisplay  PE Size (KByte)       4096
>pvdisplay  Total PE              1666397
>pvdisplay  Free PE               0
>pvdisplay  Allocated PE          1666397
>pvdisplay  PV UUID               UlaSJI-9Srm-e3AW-LdNW-g2HG-v6ZE-4yWwPw
>pvdisplay
>pvdisplay  --- Physical volume ---
>pvdisplay  PV Name               /dev/sdc
>pvdisplay  VG Name               Volume02
>pvdisplay  PV Size               6.36 TB / not usable 6.00 TB
>pvdisplay  Allocatable           yes (but full)
>pvdisplay  PE Size (KByte)       4096
>pvdisplay  Total PE              1666397
>pvdisplay  Free PE               0
>pvdisplay  Allocated PE          1666397
>pvdisplay  PV UUID               mK7WWj-UV0p-N6Qc-zhx6-EK3J-g0CO-g65ljs
>
>
>I've looked around for a lvm tool to display the correct sizes, but
>can't find one.  Is there something I'm missing?

That's the output from pvdisplay.  What does lvdisplay say (or "vgdisplay
-v")?  Offhand, the only problem I see in the output shown is "not usable
6.00 TB".  I don't know much about LVM.
____________________________________________________________________
TonyN.:'                       <mailto:tonynelson at georgeanelson.com>
      '                              <http://www.georgeanelson.com/>




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