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clarify about fuse performance issues 

[Imported from Trac: page FAQ, version 90]
zooko 2013-04-23 18:17:56 +00:00
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FAQ.md

@ -161,7 +161,9 @@ Literal caps are supported for immutable files and immutable directories (see [t
**<a name="Q23_FUSE">Q23:</a> Can I access files stored in Tahoe-LAFS via FUSE?** **<a name="Q23_FUSE">Q23:</a> Can I access files stored in Tahoe-LAFS via FUSE?**
A: A:
Yes. Tahoe-LAFS comes with an [SFTP server]source:git/docs/frontends/FTP-and-SFTP.rst. If you point [sshfs](http://fuse.sourceforge.net/sshfs.html) at the SFTP server then you have access to Tahoe-LAFS through FUSE. Alternately, [pyfilesystem](pyFilesystem) interfaces directly with Tahoe-LAFS through the latter's [WAPI]source:git/docs/frontends/webapi.rst and provides both FUSE and Microsoft Windows filesystem access. See #1353 for discussion of possible improvements to FUSE integration. See [Zooko's post to freedombox-discuss](http://lists.alioth.debian.org/pipermail/freedombox-discuss/2011-November/003162.html) and [Zooko's post to Google+](https://plus.google.com/108313527900507320366/posts/ZrgdgLhV3NG) for Zooko's ramblings about the advisability of using FUSE for distributed filesystems in general and Tahoe-LAFS in particular. Yes. Tahoe-LAFS comes with an [SFTP server]source:git/docs/frontends/FTP-and-SFTP.rst. If you point [sshfs](http://fuse.sourceforge.net/sshfs.html) at the SFTP server then you have access to Tahoe-LAFS through FUSE. Alternately, [pyfilesystem](pyFilesystem) interfaces directly with Tahoe-LAFS through the latter's [WAPI]source:git/docs/frontends/webapi.rst and provides both FUSE and Microsoft Windows filesystem access. See #1353 for discussion of possible improvements to FUSE integration.
There could be performance problems with the FUSE interface if the apps that are using the filesystem use it in a way that doesn't fit Tahoe-LAFS's semantics, and the FUSE layer is required to make many copies of entire files in order to simulate the desired semantics. See [Zooko's post to freedombox-discuss](http://lists.alioth.debian.org/pipermail/freedombox-discuss/2011-November/003162.html) and [Zooko's post to Google+](https://plus.google.com/108313527900507320366/posts/ZrgdgLhV3NG).
*'<a name="Q24_smallgrid">Q24:</a> How I should setup k,h,N on my small private grid?* *'<a name="Q24_smallgrid">Q24:</a> How I should setup k,h,N on my small private grid?*