[clug] very FAT linux filesystems or cluster pixes?

Eyal Lebedinsky eyal at eyal.emu.id.au
Tue Feb 22 20:38:59 MST 2011

Could this be a sparse file?


On 22/02/2011 21:57, Scott Ferguson wrote:
> Can any one give me a reason why the same files should dramatically
> change size according to the file system it resides on?
> Eg#0 1960 files in 259 sub-folders == 11.8MB debian lenny server ext3
> Eg#1 same files, checked with md5 sums == 11.8MB debian squeeze server ext4
> Eg#2 ditto, == 11.8MB on unknow OS and files system (*cough* godaddy *spit*)
> Eg#3 ditto, == 27MB CentOS, unknown filesystem (other web hosting company)
> ftp&  cPanel always seem to show Eg#3 as using close to double the
> amount of space used elsewhere for the identical files. I've even md5
> summed before uploading, then downloaded and checked. On host #3 the
> system shows almost twice the space being used...
> I have access to several accounts on host #3 and when I check I find the
> same thing - the same files on that host occupy almost twice the space
> they do on file systems I control - whether physical or virtual.
> My strong suspicion is that I'm being scammed but I don't have proof, I
> can't work out how it's being done, or why. None of the affected
> accounts pay more because of the "different" space measurements (they
> still have free space). Feeling pretty stupid here, because I've used
> and advocated the company for some time, and only just noticed the
> problem (undocumented feature?) when I went to move an existing cms from
> a webserver where it occupies 22MB of space to another hosted server
> with 30MB and started running out of space.... which lead me to examine
> the space used by other clients on the same host :-(
> Individually the hosted files (Eg#3) show as the correct size in cPanel
> and in ftp, it's in total that the discrepancy arises - even after
> emptying the public_html, and verifying via cPanel that no space is
> used, and re-installing.
> Curiouser, and curiouser...
> Thanks in advance.

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