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mount: docs: add note about volume path syntax on windows

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albertony 2021-02-11 09:09:48 +01:00 committed by Nick Craig-Wood
parent 59ed70ca91
commit 18cd2064ec
2 changed files with 37 additions and 14 deletions
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docs/content/docs.md
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@ -161,8 +161,9 @@ The syntax of the paths passed to the rclone command are as follows.
This refers to the local file system.
On Windows only `\` may be used instead of `/` in local paths
**only**, non local paths must use `/`.
On Windows `\` may be used instead of `/` in local paths **only**,
non local paths must use `/`. See [local filesystem](https://rclone.org/local/#windows-paths)
documentation for more about Windows-specific paths.
These paths needn't start with a leading `/` - if they don't then they
will be relative to the current directory.

46
docs/content/local.md
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@ -10,15 +10,17 @@ Local paths are specified as normal filesystem paths, e.g. `/path/to/wherever`,
rclone sync -i /home/source /tmp/destination
Will sync `/home/source` to `/tmp/destination`
Will sync `/home/source` to `/tmp/destination`.
These can be configured into the config file for consistencies sake,
but it is probably easier not to.
For consistencies sake one can also configure a remote of type
`local` in the config file, and access the local filesystem using
rclone remote paths, e.g. `remote:path/to/wherever`, but it is probably
easier not to.
### Modified time ###
Rclone reads and writes the modified time using an accuracy determined by
the OS. Typically this is 1ns on Linux, 10 ns on Windows and 1 Second
the OS. Typically this is 1ns on Linux, 10 ns on Windows and 1 Second
on OS X.
### Filenames ###
@ -109,15 +111,35 @@ These only get replaced if they are the last character in the name:
Invalid UTF-8 bytes will also be [replaced](/overview/#invalid-utf8),
as they can't be converted to UTF-16.
### Long paths on Windows ###
### Paths on Windows ###
Rclone handles long paths automatically, by converting all paths to long
[UNC paths](https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247(v=vs.85).aspx#maxpath)
which allows paths up to 32,767 characters.
On Windows there are many ways of specifying a path to a file system resource.
Both absolute paths like `C:\path\to\wherever`, and relative paths like
`..\wherever` can be used, and path separator can be either
`\` (as in `C:\path\to\wherever`) or `/` (as in `C:/path/to/wherever`).
Length of these paths are limited to 259 characters for files and 247
characters for directories, but there is an alternative extended-length
path format increasing the limit to (approximately) 32,767 characters.
This format requires absolute paths and the use of prefix `\\?\`,
e.g. `\\?\D:\some\very\long\path`. For convenience rclone will automatically
convert regular paths into the corresponding extended-length paths,
so in most cases you do not have to worry about this (read more [below](#long-paths)).
This is why you will see that your paths, for instance `c:\files` is
converted to the UNC path `\\?\c:\files` in the output,
and `\\server\share` is converted to `\\?\UNC\server\share`.
Note that Windows supports using the same prefix `\\?\` to
specify path to volumes identified by their GUID, e.g.
`\\?\Volume{b75e2c83-0000-0000-0000-602f00000000}\some\path`.
This is *not* supported in rclone, due to an [issue](https://github.com/golang/go/issues/39785)
in go.
#### Long paths ####
Rclone handles long paths automatically, by converting all paths to
[extended-length path format](https://docs.microsoft.com/en-us/windows/win32/fileio/maximum-file-path-limitation), which allows paths up to 32,767 characters.
This conversion will ensure paths are absolute and prefix them with
the `\\?\`. This is why you will see that your paths, for instance
`.\files` is shown as path `\\?\C:\files` in the output, and `\\server\share`
as `\\?\UNC\server\share`.
However, in rare cases this may cause problems with buggy file
system drivers like [EncFS](https://github.com/rclone/rclone/issues/261).
@ -141,7 +163,7 @@ And use rclone like this:
This will use UNC paths on `c:\src` but not on `z:\dst`.
Of course this will cause problems if the absolute path length of a
file exceeds 258 characters on z, so only use this option if you have to.
file exceeds 259 characters on z, so only use this option if you have to.
### Symlinks / Junction points