Post 1679470 by fatboy@fosstodon.org
 (DIR) More posts by fatboy@fosstodon.org
 (DIR) Post #1678339 by e4rache@fosstodon.org
       2018-12-03T11:52:14Z
       
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       Please explain me why ext3/4 don't need defragmentation.How does that work?
       
 (DIR) Post #1678786 by Matter@fosstodon.org
       2018-12-03T12:27:29Z
       
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       @e4rache https://ols.fedoraproject.org/OLS/Reprints-2007/sato-Reprint.pdf , first paragraphs go into the measures employed to reduce fragmentation (might have to download it with the  --no-check-certificate flag with wget, it's misconfigured). And it does need defragmentation, in extreme cases, else they wouldn't have made the defrag tool :D
       
 (DIR) Post #1678794 by e4rache@fosstodon.org
       2018-12-03T12:28:20Z
       
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       @Matter Thank you! :-)
       
 (DIR) Post #1679470 by fatboy@fosstodon.org
       2018-12-03T13:12:23Z
       
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       @e4rache I'm under correction here, but I suspect it has to do with the manner data is written to the HDD?
       
 (DIR) Post #1679658 by technoslick@fosstodon.org
       2018-12-03T13:22:57Z
       
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       @e4rache Simply answered: Ext attempts to keep data writes to the 'drive' contiguous. As soon as data is deleted, the space will be overwritten to keep data in contiguous sectors. This effort is why deletion of data is 'generally' expressed as being permanently lost. In contrast, (oversimplified) M$ Windows avoids using deleted space until it can't find any unused space to work in. It parcels out sectors of data to wherever those chunks will fit in unused sectors. Fragmentation is inevitable.