From: Daira Hopwood Date: Thu, 24 Sep 2015 18:44:09 +0000 (+0200) Subject: Fix an oversight in the design doc. X-Git-Url: https://git.rkrishnan.org/?a=commitdiff_plain;h=f0b38b5c1de6bb7fabc415cf5fad47fbcc3ea81d;p=tahoe-lafs%2Ftahoe-lafs.git Fix an oversight in the design doc. --- diff --git a/docs/proposed/magic-folder/remote-to-local-sync.rst b/docs/proposed/magic-folder/remote-to-local-sync.rst index 3e05b6cb..a90983c9 100644 --- a/docs/proposed/magic-folder/remote-to-local-sync.rst +++ b/docs/proposed/magic-folder/remote-to-local-sync.rst @@ -395,14 +395,17 @@ and Windows. On Unix, it can be implemented as follows: suppressing errors. Note that, if there is no conflict, the entry for ``foo`` -recorded in the `magic folder db`_ will reflect the ``mtime`` -set in step 3. The link operation in step 4c will cause an -``IN_CREATE`` event for ``foo``, but this will not trigger an -upload, because the metadata recorded in the database entry -will exactly match the metadata for the file's inode on disk. -(The two hard links — ``foo`` and, while it still exists, -``.foo.tmp`` — share the same inode and therefore the same -metadata.) +recorded in the `magic folder db`_ will reflect the ``mtime`` +set in step 3. The move operation in step 4b will cause a +``MOVED_FROM`` event for ``foo``, and the link operation in +step 4c will cause an ``IN_CREATE`` event for ``foo``. +However, these events will not trigger an upload, because they +are guaranteed to be processed only after the file replacement +has finished, at which point the metadata recorded in the +database entry will exactly match the metadata for the file's +inode on disk. (The two hard links — ``foo`` and, while it +still exists, ``.foo.tmp`` — share the same inode and +therefore the same metadata.) .. _`magic folder db`: filesystem_integration.rst#local-scanning-and-database @@ -411,9 +414,9 @@ call to the `ReplaceFileW`_ API (with the ``REPLACEFILE_IGNORE_MERGE_ERRORS`` flag). Similar to the Unix case, the `ReplaceFileW`_ operation will -cause a change notification for ``foo``. The replaced ``foo`` -has the same ``mtime`` as the replacement file, and so this -notification will not trigger an unwanted upload. +cause one or more change notifications for ``foo``. The replaced +``foo`` has the same ``mtime`` as the replacement file, and so any +such notification(s) will not trigger an unwanted upload. .. _`ReplaceFileW`: https://msdn.microsoft.com/en-us/library/windows/desktop/aa365512%28v=vs.85%29.aspx