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306 Commits

Author SHA1 Message Date
Nick Craig-Wood
3282fd26af vfs: clean path names before using them in the cache 
This avoids inconsistent cache behaviour on open("potato/")
close("potato").

The tests were also adjusted to make them more comprehensive.
 2018-02-26 16:59:14 +00:00
Nick Craig-Wood
88d830c7b7 vfs: create cache.opens and use it in place of cache.get to avoid potential race 2018-02-26 16:58:02 +00:00
Nick Craig-Wood
9252224d82 vfs: don't open the file when using a RW handle for a null Seek 
Background: cmd/mount/file.go Open() function does a Seek(0, 1) to see
if the file handle is seekable to set a FUSE hint.  Before this change
the file was downloaded before it needed to be which was inefficient
(and broke beta.rclone.org because HEAD requests caused downloads!).
 2018-02-22 17:28:21 +00:00
Fabian Möller
62e72801be
vfs: fix race between multiple RWFileHandle (#2052) 
Fixes #2034
 2018-02-18 14:12:26 +01:00
Nick Craig-Wood
442334ba61 vfs: disable cache cleaner if --vfs-cache-poll-interval=0 
And use this to disable the cleaner in the cache tests to make them
more reliable
 2018-02-16 14:12:46 +00:00
Nick Craig-Wood
8a9ed57951 vfs: fix another race in cache tests 2018-02-16 12:05:59 +00:00
Nick Craig-Wood
9b800d7184 vfs: fix race in cache tests 2018-02-15 21:34:37 +00:00
Nick Craig-Wood
cd7fd51119 vfs: fix docs - fixes #2067 2018-02-12 11:29:32 +00:00
Stefan Breunig
846bbef1e9 vfs: write 0 bytes when flushing unwritten handles to avoid race conditions in FUSE - fixes #1181 2018-02-11 17:59:13 +00:00
Nick Craig-Wood
04a0a7406b vfs: downgrade "poll-interval is not supported" message to Info 
...to save confusion as it isn't very important
 2018-02-09 07:57:50 +00:00
Nick Craig-Wood
295c3fabec vfs: fill and clean the cache immediately on startup 2018-02-02 12:19:53 +00:00
Nick Craig-Wood
3f8d286a75 vfs: fix cache cleaning on startup 
Previous to this fix the vfs cache wasn't being cleaned properly on
startup as the atimes of the existing files were being ignored.
 2018-02-02 12:06:42 +00:00
Nick Craig-Wood
44276db454 vfs: make -ve sized files appear as 0 size. #320 
This means that Google docs will no longer appear as huge files in
`rclone mount`.  They will not be downloadable, though sometimes
trying twice will work.
 2018-01-31 16:22:05 +00:00
Nick Craig-Wood
dbabb18b0c vfs: Make error messages more informative #2009 2018-01-25 10:33:00 +00:00
Jody Frankowski
5e73acd40a Clean up mount.go and vfs/help.go docs 
* Title cleanups
* Typos
* `rclone mount vs rclone sync/copy` update with `File Caching`
 2018-01-20 18:14:20 +00:00
Nick Craig-Wood
a80d8a21dc vfs: add flags parameter to Dir.Create 2018-01-19 13:18:40 +00:00
Nick Craig-Wood
517bdc719b vfs: make specialized file Open functions private 2018-01-19 11:46:01 +00:00
Nick Craig-Wood
11da2a6c9b Break the fs package up into smaller parts. 
The purpose of this is to make it easier to maintain and eventually to
allow the rclone backends to be re-used in other projects without
having to use the rclone configuration system.

The new code layout is documented in CONTRIBUTING.
 2018-01-15 17:51:14 +00:00
Nick Craig-Wood
b8b620f5c2 Move all backends into backend directory 2018-01-12 17:07:38 +00:00
Nick Craig-Wood
29d34426bc vfs: fix deletion of in use directories #1860 
This was causing errors if the cache cleaner was called between the
Open and the pendingOpen of a RW file.

The fix was to move the cache open to the Open from the openPending.
 2017-12-15 15:42:49 +00:00
Nick Craig-Wood
38b85e94ea vfs: rename --cache-* options to --vfs-cache-* to save confusion 
..as the backend cache options are all called --cache-* too. Adjust
docs to point out what the vfs cache does vs the backend cache.
 2017-12-03 12:14:15 +00:00
Nick Craig-Wood
c16ac697a9 vfs: keep track of directories in the cache also #1860 
This makes managing empty directories more reliable.
 2017-11-28 20:39:23 +00:00
Nick Craig-Wood
0978957a2e vfs: make sure all 96 combinations of flags for Open work 2017-11-28 20:39:23 +00:00
Nick Craig-Wood
d1b19f975d vfs: remove items from cache when deleted #1860 
Also fixes Error message when items have been deleted from the cache
(eg when Moved) when the cache reaper comes to delete them.
 2017-11-28 16:13:58 +00:00
Nick Craig-Wood
3fb4fe31d2 vfs: make sure write only handles never truncate files they shouldn't 2017-11-20 19:42:25 +00:00
Nick Craig-Wood
76b151984c vfs: cache the size of the object in the read handle 2017-11-20 17:57:13 +00:00
Nick Craig-Wood
60945d0a37 vfs: remove misleading comment 2017-11-20 12:46:23 +00:00
Nick Craig-Wood
b4083b4371 vfs: rename Fsync to Sync and implement Sync on Node and Handle 2017-11-20 12:46:23 +00:00
Nick Craig-Wood
9738f8532b vfs: Add FlushDirCache method 2017-11-20 12:46:23 +00:00
Nick Craig-Wood
a5b034a992 vfs: add WaitForWriters to wait until all writers have finished 2017-11-20 12:46:23 +00:00
Nick Craig-Wood
321b6da7af vfs: don't remove file from writers until it is transferred 
This means that the list of active writers is up to date
 2017-11-20 12:46:23 +00:00
Nick Craig-Wood
1b22ee5b93 vfs: fix error handling in openPending so it returns the correct error 2017-11-20 12:46:23 +00:00
Nick Craig-Wood
eab55ce882 vfs: add open files to directories 2017-11-20 12:46:23 +00:00
Nick Craig-Wood
c560017934 vfs: add Path method to Node and use it to stop reading nil DirEntry 
All DirEntry calls now have been checked for nil or converted to use Path.
 2017-11-20 12:46:22 +00:00
Nick Craig-Wood
992647b157 vfs: Don't error a r/w file open without cache; delay error until Read called 
If we open a file for r/w without the cache we now always return a
handle and return an error if the file is ever read from.  This fixes
incompatibility with cmount under windows.
 2017-11-20 12:46:22 +00:00
Nick Craig-Wood
dec21ccf63 vfs, cmount: make truncate work properly in the presence or otherwise of open files 2017-11-20 12:46:22 +00:00
Nick Craig-Wood
e7f2935333 vfs: decode flags in Open/OpenFile for debug 2017-11-20 12:46:22 +00:00
Nick Craig-Wood
8951875c21 vfs,mount,cmount,mountlib: allow flags to be overriden by environment variables 2017-11-20 12:46:21 +00:00
Nick Craig-Wood
05a1e1532b vfs,mount,cmount,serve: Add documentation for vfs caching modes 2017-11-20 12:46:21 +00:00
Nick Craig-Wood
7f20e1d7f3 vfs: add read write files and caching #711 
This adds new flags to mount, cmount, serve *

    --cache-max-age duration         Max age of objects in the cache. (default 1h0m0s)
    --cache-mode string              Cache mode off|minimal|writes|full (default "off")
    --cache-poll-interval duration   Interval to poll the cache for stale objects. (default 1m0s)
 2017-11-20 12:36:50 +00:00
Nick Craig-Wood
a0cfa0929b vfs: remove un-needed (after introduction of rcat) createInfo struct 2017-11-20 12:00:32 +00:00
Nick Craig-Wood
3fb1e96988 vfs: factor Open logic from Dir.Create into vfs.OpenFile 2017-11-20 12:00:32 +00:00
Fabian Möller
5acb6f47e7 mountlib: log when poll-interval is ineffective 
Notify the user in case poll-interval is used on a unsupported remote
 2017-11-19 20:08:14 +00:00
Nick Craig-Wood
c31556c6d1 vfs: Make sure all public methods are locked in Read and Write Handle 2017-11-04 10:24:10 +00:00
Nick Craig-Wood
2083ac6e2a vfs: add ECLOSED and tidy errors 2017-11-04 10:24:10 +00:00
Nick Craig-Wood
22ee839d05 cmount,vfs: unify Read and Write handles and File and Dir where possible 2017-11-04 10:24:10 +00:00
Nick Craig-Wood
5634659ea3 mount,vfs: unify Read and Write handles in preparation for ReadWrite handles 2017-11-04 10:24:10 +00:00
Nick Craig-Wood
e18122e88b vfs: add tests and subsequent fixes 
* Tests for VFS layer
  * Small fixes found during testing
  * Fix Close, Flush and Release behaviour for ReadFileHandle and WriteFileHandle
  * Fix nil object bugs on File
 2017-11-04 10:24:10 +00:00
Nick Craig-Wood
8184ec4b70 vfs: add EPERM to errors 2017-11-03 13:00:00 +00:00
Nick Craig-Wood
190367d917 vfs: factor duplicated Open code into vfs from mount/cmount 2017-11-03 13:00:00 +00:00
Nick Craig-Wood
a5dc62f6c1 vfs: Make file handles compatible with OS 
* Implement directory handles
  * Unify OpenFile
  * Add all the methods to match *os.File
  * Add StatParent and Rename methods to VFS
 2017-11-03 13:00:00 +00:00
Nick Craig-Wood
3e0c91ba4b vfs: Move DefaultOpt to vfs and make some methods private 2017-11-03 13:00:00 +00:00
Nick Craig-Wood
7e065440fb vfs: rename Lookup to Stat to be more in keeping with os 2017-11-03 12:59:59 +00:00
Nick Craig-Wood
e8883e9fdb vfs: factor flags into vfsflags and remove global variables 2017-11-03 12:59:59 +00:00
Nick Craig-Wood
1a8f824bad vfs: use os package errors where possible 2017-11-03 12:59:59 +00:00
Nick Craig-Wood
c1aaff220d Factor new vfs module out of cmd/mountlib 
This is an OS style file system abstraction with directory caching
used in mount, cmount, serve webdav and serve http.
 2017-11-03 12:59:59 +00:00