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ext3 defragmentationext3 defragmentationPosted Apr 25, 2004 11:15 UTC (Sun) by tialaramex (subscriber, #21167)In reply to: ext3 defragmentation by jbh Parent article: ext3 block reservation ext3 filesystems that are cleanly unmounted are also valid ext2 filesystems and can therefore be defrag'd by any working ext2 defrag application. I last used such a thing in 1998 and it seemed to work fine at that time. I believe there have since been one or perhaps at most two incompatible changes to the ext2 structures that might (not sure) affect defrag programs. You should check that any defrag application you consider is aware of ext2/3's compatibility flags, which would prevent it from modifying a filesystem with features that it doesn't understand.
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