linux-ext4 - df command on EXT4 and XFS filesystem

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Message-ID: <60A0C755EDF2954AA9C18966C50DB31429E2A0A49C@NDA-HCLT-EVS05.HCLT.CORP.HCL.IN>
Date:	Thu, 7 Feb 2013 12:18:26 +0530
From:	"Subranshu Patel - ERS, HCL Tech" <Subranshu.P@....com>
To:	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>
Subject: df command on EXT4 and XFS filesystem

I have an observation on EXT4 filesystem. I created filesystem of size 1TB, 4TB, and 7TB and then checked the output of df command. 

df command showed the number of 1KB blocks used. The result was:
1TB: 204056
4TB: 198680
7TB: 181784 

This trend was surprising, with increasing filesystem size, the number of used blocks decreased. Why it is so? 

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