[tahoe-dev] ANNOUNCING Tahoe-LAFS v1.7β! Please test!

FreeStorm . freestorm77 at gmail.com
Wed Jun 9 10:32:22 PDT 2010 

Hello,

You need to patch Twisted to use sftp with Tahoe-LAFS

You can follow instructions in chapter "Dependencies" in file docs /
frontends / FTP-and-SFTP.txt [1]

Regards
Frederic

 [1]
http://tahoe-lafs.org/trac/tahoe-lafs/browser/docs/frontends/FTP-and-SFTP.txt#L151


2010/6/9 Wassim Drira
<drirawassim+tahoe at gmail.com<drirawassim%2Btahoe at gmail.com>
>

> Hello,
>
> Trying to run it on CentOS 5, I get this error:
>
>  STARTING /opt/tahoe-test/tahoe-beta/client-sftp
>
> Traceback (most recent call last):
>   File
> "/opt/tahoe-test/tahoe-beta/allmydata-tahoe-1.6.1-r4470/Twisted-10.0.0-py2.4-linux-x86_64.egg/twisted/application/app.py",
> line 693, in run
>     runApp(config)
>
>   File
> "/opt/tahoe-test/tahoe-beta/allmydata-tahoe-1.6.1-r4470/Twisted-10.0.0-py2.4-linux-x86_64.egg/twisted/scripts/twistd.py",
> line 23, in runApp
>     _SomeApplicationRunner(config).run()
>   File
> "/opt/tahoe-test/tahoe-beta/allmydata-tahoe-1.6.1-r4470/Twisted-10.0.0-py2.4-linux-x86_64.egg/twisted/application/app.py",
> line 411, in run
>     self.application = self.createOrGetApplication()
>   File
> "/opt/tahoe-test/tahoe-beta/allmydata-tahoe-1.6.1-r4470/Twisted-10.0.0-py2.4-linux-x86_64.egg/twisted/application/app.py",
> line 494, in createOrGetApplication
>     application = getApplication(self.config, passphrase)
> --- <exception caught here> ---
>   File
> "/opt/tahoe-test/tahoe-beta/allmydata-tahoe-1.6.1-r4470/Twisted-10.0.0-py2.4-linux-x86_64.egg/twisted/application/app.py",
> line 505, in getApplication
>     application = service.loadApplication(filename, style, passphrase)
>   File
> "/opt/tahoe-test/tahoe-beta/allmydata-tahoe-1.6.1-r4470/Twisted-10.0.0-py2.4-linux-x86_64.egg/twisted/application/service.py",
> line 390, in loadApplication
>     application = sob.loadValueFromFile(filename, 'application',
> passphrase)
>   File
> "/opt/tahoe-test/tahoe-beta/allmydata-tahoe-1.6.1-r4470/Twisted-10.0.0-py2.4-linux-x86_64.egg/twisted/persisted/sob.py",
> line 210, in loadValueFromFile
>     exec fileObj in d, d
>   File "tahoe-client.tac", line 10, in ?
>     c = client.Client()
>   File
> "/opt/tahoe-test/tahoe-beta/allmydata-tahoe-1.6.1-r4470/src/allmydata/client.py",
> line 140, in __init__
>     self.init_ftp_server()
>   File
> "/opt/tahoe-test/tahoe-beta/allmydata-tahoe-1.6.1-r4470/src/allmydata/client.py",
> line 417, in init_ftp_server
>     s = ftpd.FTPServer(self, accountfile, accounturl, ftp_portstr)
>   File
> "/opt/tahoe-test/tahoe-beta/allmydata-tahoe-1.6.1-r4470/src/allmydata/frontends/ftpd.py",
> line 293, in __init__
>     raise AssertionError("your twisted is lacking a vital patch, see
> docs/frontends/FTP-and-SFTP.txt")
> exceptions.AssertionError: your twisted is lacking a vital patch, see
> docs/frontends/FTP-and-SFTP.txt
>
> Failed to load application: your twisted is lacking a vital patch, see
> docs/frontends/FTP-and-SFTP.txt
>
> client node probably not started
>
>
> Regards,
> ---
> Wassim Drira
>
>
>
>
> On Wed, Jun 9, 2010 at 17:27, Zooko O'Whielacronx <zookog at gmail.com>wrote:
>
>> Folks:
>>
>> The Tahoe-LAFS volunteer hackers have done a superb job for the last
>> few weeks, iteratively testing and refining the major new features of
>> Tahoe-LAFS v1.7.
>>
>> The current version passes our comprehensive test suite on many
>> platforms (see the Buildbot [1] especially the "Supported Platforms"
>> section).
>>
>> This is officially Tahoe-LAFS v1.7.0β!
>>
>> The plan is that this version will become v1.7.0 final except for
>> improving the documentation and packaging, and fixing any critical
>> bugs that turn up.
>>
>> Tahoe-LAFS v1.7 is going to be a major new release, adding important
>> features and continuing our strong tradition of reliability and
>> compatibility.
>>
>>
>> WHAT'S NEW
>>
>> There are three major new features (not counting various small
>> bugfixes and improvements): SFTP support, support for non-ASCII
>> character encodings, and Servers of Happiness.
>>
>> * SFTP support
>>
>> Your Tahoe-LAFS gateway now acts like a full-fledged SFTP server. It
>> has been tested with sshfs to provide a virtual filesystem in Linux.
>> Many users have asked for this feature. We hope that it serves them
>> well! See the FTP-and-SFTP.txt document [2] to get started.
>>
>> * support for non-ASCII character encodings
>>
>> Tahoe-LAFS now correctly handles filenames containing non-ASCII
>> characters on all supported platforms:
>>
>>  - when reading files in from the local filesystem (such as when you
>> run "tahoe backup" to back up your local files to a Tahoe-LAFS grid);
>>  - when writing files out to the local filesystem (such as when you
>> run "tahoe cp -r" to recursively copy files out of a Tahoe-LAFS grid);
>>  - when displaying filenames to the terminal (such as when you run
>> "tahoe ls"), subject to limitations of the terminal and locale;
>>  - when parsing command-line arguments, except on Windows (to be fixed
>> on Windows in a future release)
>>
>> * Servers of Happiness
>>
>> Tahoe-LAFS now measures during immutable file upload to see how well
>> distributed it is across multiple servers. It aborts the upload if the
>> pieces of the file are not sufficiently well-distributed.
>>
>> This behavior is controlled by a configuration parameter called
>> "servers of happiness". With the default settings for its erasure
>> coding, Tahoe-LAFS generates 10 shares for each file, such that any 3
>> of those shares are sufficient to recover the file. The default value
>> of "servers of happiness" is 7, which means that Tahoe-LAFS will
>> guarantee that there are at least 7 servers holding
>> some of the shares, such that any 3 of those servers can completely
>> recover your file.
>>
>> The new upload code also distributes the shares better than the
>> previous version in some cases and takes better advantage of
>> pre-existing shares (when a file has already been previously
>> uploaded). See the architecture.txt document [3] for details.
>>
>>
>> HOW TO GET STARTED
>>
>> Follow the instructions in the quickstart.html document [4].
>>
>>
>> CAVEATS
>>
>> Do not be too disappointed if you discover the following performance
>> issue.
>>
>> While this release makes it possible to use Tahoe-LAFS as a mostly
>> POSIX-compliant filesystem (thanks to FUSE and sshfs), it will have
>> very bad performance for some cases which have good performance on
>> your traditional local filesystem. In particular it is bad at making
>> small changes to large files (it actually stores the new file contents
>> every time you write to the file and re-uploads the entire file every
>> time you close it after having written to it). On the other hand it
>> has some nice scalability and load-balancing characteristics compared
>> to traditional POSIX filesystems--you will be able to easily add tens
>> or hundreds of computers to your distributed, shared Tahoe-LAFS
>> filesystem and it will take advantage of them in a nice distributed
>> pattern without going noticeably slower than if you had a single
>> Tahoe-LAFS server.
>>
>> So, you should not assume that the POSIX emulation of Tahoe-LAFS v1.7
>> will perform sufficiently well at a particular use case or load
>> pattern until you've tried it, but if you do try it and it does
>> perform acceptably well then you can feel confident that it will
>> continue to perform that well as you scale out your filesystem.
>>
>> Improving the performance in some dimensions is one of the goals of
>> the Google Summer of Code Project which will result in Tahoe-LAFS v1.8
>> this Fall (northern hemisphere).
>>
>>
>> COMPATIBILITY
>>
>> This release continues the tradition of full backward-compatibility.
>> Use it without fear.
>>
>>
>> ENJOY!
>>
>> We think Tahoe-LAFS is a really cool hack with great potential. That's
>> why we spend our time on it as a labor of love. We hope you find good
>> uses for it.
>>
>>
>> Regards,
>>
>> Zooko, release manager of v1.7
>>
>> [1] http://tahoe-lafs.org/buildbot/
>> [2]
>> http://tahoe-lafs.org/trac/tahoe-lafs/browser/docs/frontends/FTP-and-SFTP.txt
>> [3] http://tahoe-lafs.org/trac/tahoe-lafs/browser/docs/architecture.txt
>> [4] http://tahoe-lafs.org/source/tahoe-lafs/trunk/docs/quickstart.html
>> _______________________________________________
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>> tahoe-dev at allmydata.org
>> http://allmydata.org/cgi-bin/mailman/listinfo/tahoe-dev
>>
>
>
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