[linux-lvm] fdisk and lvs size differences

Tomasz Chmielewski mangoo at wpkg.org
Wed Jan 9 13:36:12 UTC 2008

Let's say I have a 500GB logical volume:

# lvs | grep san2_data
   san2_data                  san1 -wi-a- 500.00G

fdisk will report a bigger number:

# fdisk -l /dev/san1/san2_data

Disk /dev/san1/san2_data: 536.8 GB, 536870912000 bytes

Now, if fdisk -l would report 100 GB for some partition/disk/volume, a 
volume of which size should I create with "lvcreate" when I want to copy 
data from that partition/disk/volume to a new logical volume?

I wouldn't like to waste several gigabytes of space (this would happen 
if I create a 100G volume with lvcreate), perhaps there is some magic 

Tomasz Chmielewski

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