<div dir="ltr"><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif">technicaly its half true. </div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif"><br></div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif">
<p style="margin:0.5em 0px;line-height:22.399999618530273px;color:rgb(37,37,37);font-family:sans-serif;font-size:14px">Modern Linux filesystem(s) keep fragmentation at a minimum by keeping all blocks in a file close together, even if they can't be stored in consecutive sectors. Some filesystems, like ext3, effectively allocate the free block that is nearest to other blocks in a file. Therefore it is not necessary to worry about fragmentation in a Linux system."</p>
<p style="margin:0.5em 0px;color:rgb(37,37,37);font-family:sans-serif"><span style="font-size:14px;line-height:22.399999618530273px">While ext3 is more resistant to file fragmentation than the <a href="http://en.wikipedia.org/wiki/File_Allocation_Table" title="File Allocation Table" style="text-decoration:none;color:rgb(11,0,128);background:none">FAT</a> filesystem, ext3 can get fragmented over time or for specific usage patterns, like slowly writing large files.</span><span style="font-size:12px;line-height:11.666666030883789px"> </span><span style="font-size:14px;line-height:22.399999618530273px">Consequently, ext4 (the successor to ext3) has an online filesystem defragmentation utility e4defrag</span><span style="font-size:14px;line-height:22.399999618530273px"> and currently supports </span><a href="http://en.wikipedia.org/wiki/Extent_(file_systems)" title="Extent (file systems)" style="font-size:14px;line-height:22.399999618530273px;text-decoration:none;color:rgb(11,0,128);background-image:none;background-color:initial;background-repeat:initial">extents</a><span style="font-size:14px;line-height:22.399999618530273px"> (contiguous file regions).</span></p>
</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Sat, Aug 16, 2014 at 11:48 AM, Michael Havens <span dir="ltr"><<a href="mailto:bmike1@gmail.com" target="_blank">bmike1@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">I have been taught that a Linux file system doesn't fragment. HOwever I'm was looking at Linux from scratch (section 6.25.2) and have discovered that isn't true. A couple of the programs the e2fsprogs installs are:<br>
<table border="0"><tbody><tr><td><p><span><span><strong>e2freefrag</strong></span></span>
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Reports free space fragmentation information
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<td><br></td><td><br></td></tr><tr><td>and<br></td>
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<a name="147e0271daf9c13a_e4defrag"></a><span><span><strong>e4defrag</strong></span></span>
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Online defragmenter for ext4 filesystems
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<a name="147e0271daf9c13a_filefrag"></a><span><span><strong></strong></span></span></p></td></tr></tbody></table><div><div>Well..... maybe I learned it doesn't need to be defragmented. However, e4defrag seems to indicate it does need to be defragged. Could I get some comments?<br>
<br> :-)~MIKE~(-:</div>
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