linux-ext4 - 2.6.33.1: ext4 disk free weirdness

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Message-ID: <20100329045748.GR2657@zip.com.au>
Date:	Mon, 29 Mar 2010 15:57:49 +1100
From:	CaT <cat@....com.au>
To:	linux-ext4@...r.kernel.org
Subject: 2.6.33.1: ext4 disk free weirdness

Using kernel 2.6.33.1. Am rsyncing from /data/mirror (a raid0 mount) to
/dev/sda1 (a usb HD). Both filesystems formatted as ext3 but mounted as
ext4. /mnt filesystem is only being added to and currently large files
(iso files 700MB-4.4GB) are being copied. When I remounted /mnt as ext3
I could not duplicate the issue and the amount of disk used stabilised
at 182G. The df results, whilst /mnt is mounted as ext4, are below:

1 [29/03 15:05:58] >> df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/md5              1.3T  1.2T  113G  92% /data/mirror
/dev/sda1             917G  317G  555G  37% /mnt
1 [29/03 15:11:05] >> df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/md5              1.3T  1.2T  113G  92% /data/mirror
/dev/sda1             917G  224G  647G  26% /mnt
1 [29/03 15:41:38] >> df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/md5              1.3T  1.2T  113G  92% /data/mirror
/dev/sda1             917G  670G  201G  77% /mnt 
1 [29/03 15:48:32] >> df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/md5              1.3T  1.2T  113G  92% /data/mirror
/dev/sda1             917G  246G  626G  29% /mnt 
1 [29/03 15:48:36] >> df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/md5              1.3T  1.2T  113G  92% /data/mirror
/dev/sda1             917G  313G  559G  36% /mnt 
1 [29/03 15:48:37] >> df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/md5              1.3T  1.2T  113G  92% /data/mirror
/dev/sda1             917G  396G  475G  46% /mnt 
1 [29/03 15:48:37] >> df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/md5              1.3T  1.2T  113G  92% /data/mirror
/dev/sda1             917G  615G  256G  71% /mnt 
1 [29/03 15:48:39] >> df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/md5              1.3T  1.2T  113G  92% /data/mirror
/dev/sda1             917G  671G  201G  77% /mnt 
1 [29/03 15:48:40] >> df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/md5              1.3T  1.2T  113G  92% /data/mirror
/dev/sda1             917G  671G  201G  77% /mnt 
1 [29/03 15:48:40] >> df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/md5              1.3T  1.2T  113G  92% /data/mirror
/dev/sda1             917G  215G  656G  25% /mnt 
1 [29/03 15:48:41] >> df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/md5              1.3T  1.2T  113G  92% /data/mirror
/dev/sda1             917G  334G  538G  39% /mnt 
1 [29/03 15:48:42] >> df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/md5              1.3T  1.2T  113G  92% /data/mirror
/dev/sda1             917G  522G  349G  60% /mnt 
1 [29/03 15:48:43] >> 

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