Messages in this thread | | | Date | Fri, 28 May 1999 18:03:03 -0400 (EDT) | From | "Theodore Y. Ts'o" <> | Subject | Re: Long `rm` times. |
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Date: Wed, 26 May 1999 17:23:06 +0200 From: Helge Hafting <helge.hafting@c2i.net>
HPFS use position,length pairs. But its a tradeoff, not a clear win.
Consider the case of a huge file with lots of fragments. We want to find block x in the last half of the file.
This is why any scheme using extents must also be combined with appropriate algorithsm to avoid fragmentation. If you look at a typical ext2 filesystem, most files aren't fragmented at all; allocating files across multiple block groups and using preallocation really helps avoid fragmentation issues.
- Ted
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