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- » Does the ext3-filesystem waste space? / Format drives independently?
#1 2008-12-21 19:02:27
- gesabbel
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- Registered: 2008-12-21
- Posts: 1
Does the ext3-filesystem waste space? / Format drives independently?
Hello all!
Small files stored on my Centronics CH3SNAS NAS (firmware 0.5) - wich is basically the same as the DND-323 as I learned - show up with a physical file size of 1 MB in Apples "Finder" - even though they are just several kilobytes or even bytes large (see screenshot). Is this a matter of the ext3 filesystem? Do they really take up 1 MB space each? Or is the finder unable to display the filesizes of files stored on a network share correctly.
Secondly I am wondering if there is a terminal command that allows me to format one of my two harddrives independently?
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#2 2008-12-28 08:49:29
- bq041
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- From: USA
- Registered: 2008-03-19
- Posts: 709
Re: Does the ext3-filesystem waste space? / Format drives independently?
How are your drives set-up? Raid 0, 1, JBOD, or separate? Yes, mke2fs will format the partition once it is unmounted, but if you are running RAID, you will have to fail it and remove it from the array, first.
DNS-323 F/W: 1.04b84 H/W: A1 ffp: 0.5 Drives: 2X 400 GB Seagate SATA-300
DNS-323 F/W: 1.05b28 H/W: B1 ffp: 0.5 Drives: 2X 1 TB WD SATA-300
DSM-G600 F/W: 1.02 H/W: B Drive: 500 GB WD ATA
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#3 2008-12-28 13:21:21
- wirbel
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- Registered: 2008-11-22
- Posts: 20
Re: Does the ext3-filesystem waste space? / Format drives independently?
gesabbel wrote:
Small files stored on my Centronics CH3SNAS NAS (firmware 0.5) - wich is basically the same as the DND-323 as I learned - show up with a physical file size of 1 MB in Apples "Finder" - even though they are just several kilobytes or even bytes large (see screenshot). Is this a matter of the ext3 filesystem? Do they really take up 1 MB space each? Or is the finder unable to display the filesizes of files stored on a network share correctly.
ext3 uses 1024, 2048 oder 4096 Bytes block size, depending on the mk2efs settings used while formatting the drive. That means that you wast about half of that blocksize multiplied by the number of files you have. The smaller your files are and the more files you use the more inefficient this will be. Also you loose some place for the file system itself. Smaller block sizes on the other hand slow down the drive and limit the size of the file system (4TB on 1024byte .. 16TB on 4096byte).
But thats valid for other file systems too, not only ext3.
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