[tahoe-lafs-trac-stream] [tahoe-lafs] #1652: pyfilesystem tahoe-lafs mounted with fuse does not handles fs.errors.StorageSpaceError

[tahoe-lafs]

#1652: pyfilesystem tahoe-lafs mounted with fuse does not handles
fs.errors.StorageSpaceError
----------------------+---------------------------
 Reporter:  vrusinov  |          Owner:  nobody
     Type:  defect    |         Status:  new
 Priority:  major     |      Milestone:  undecided
Component:  unknown   |        Version:  n/a
 Keywords:            |  Launchpad Bug:
----------------------+---------------------------
 Linked issue: http://code.google.com/p/pyfilesystem/issues/detail?id=101

 Please, take a look to it. Pyfileystsem seems to be great way of using
 tahoe-lafs like regular filesystem, but currently there's no way to ensure
 that files you are writing to it are being saved.

 What steps will reproduce the problem?
 1. Mount tahoe-lafs filesystem via fuse expose
 2. Copy lots of files, until there are not enough storage nodes accepting
 shares
 3. Next files are silently copied, producing 0-byte files on tahoe lafs
 instead of full ones. There is no indication of it on any tool.

 Part of log file:

 (Overwriting 59-byte djvu file with the new one):


 {{{
 (11174160) Opening file /documents/books/FL Studio 3rd Edition.djvu in
 mode r+
 (11174160) Opening existing file /documents/books/FL Studio 3rd
 Edition.djvu for reading
 (11174160) Opening file /documents/books/FL Studio 3rd Edition.djvu in
 mode w
 (11174160) Reading meta for /documents/books/FL Studio 3rd Edition.djvu
 (11174160) Creating empty file /documents/books/FL Studio 3rd Edition.djvu
 (11174160) Uploading file /documents/books/FL Studio 3rd Edition.djvu
 (11174160) Reading meta for /documents/books/FL Studio 3rd Edition.djvu
 (11174160) Uploading file /documents/books/FL Studio 3rd Edition.djvu
 (11174160) Reading meta for /documents/books/FL Studio 3rd Edition.djvu
 (11174160) Listing directory (listdirinfo) /documents/books
 (11174160) Path /documents/books/FL Studio 3rd Edition.djvu is directory:
 0
 }}}


 Copy process finished with no errors. Directory listing shows full size.
 I've waited for some time and executed umount:


 {{{
 (11174160) Uploading file /documents/books/FL Studio 3rd Edition.djvu
 Exception fs.errors.StorageSpaceError: StorageSpaceError() in <bound
 method _CacheInvalidatingFile.__del__ of <fs.remote._CacheInvalidatingFile
 object at 0xabd050>> ignored
 (11174160) Uploading file /documents/books/FL Studio 3rd Edition.djvu
 }}}


 How can I ensure that all files are really written to tahoe before
 returning success to cp/mc/whatever?

-- 
Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/1652>
tahoe-lafs <https://tahoe-lafs.org>
secure decentralized storage