Messages in this thread | | | Subject | Re: [Ext2-devel] Re: [RFC] extents support for EXT3 | From | (Eric W. Biederman) | Date | 31 Aug 2003 14:25:49 -0600 |
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Mike Fedyk <mfedyk@matchmail.com> writes:
> On Fri, Aug 29, 2003 at 06:25:02PM -0400, Ed Sweetman wrote: > > you get no real slowdown as far as rough benchmarks are concerned, > > perhaps with a microbenchmark you would see one and also, doesn't it > > take up more space to save the extent info and such? Either way, all of > > it's real benefits occur on large files. > > IIRC, if your blocks are contiguous, you can save as soon as soon as the > file size goes above one block (witout extents, the first 12 blocks are > pointed to by what? I forget... :-/ )
They are pointed to directly from the inode.
In light of other concerns how reasonable is a switch to e2fsck that will remove extents so people can downgrade filesystems?
Also given the incompatibility on the file format any chance of this being developed as ext4?
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