df, lvm and 6TB arrays oh my!

Mark Haney mhaney at ercbroadband.org
Sat Feb 11 17:28:25 UTC 2006


Randy Kelsoe wrote:
> 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?
>>
>>
> Try "lvdisplay"
>
I tried that as well, it gives me the same type of data as vgdisplay.   
I get the total size of the volume, but not the amount used on it.


-- 
Interdum feror cupidine partium magnarum Europae vincendarum

Mark Haney
Sr. Systems Administrator
ERC Broadband
(828) 350-2415




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