FreeFileSync Forum

... files from a PC to a ftp, but as the ftp root is mounted in a long length name path, some of the files that has long working filenames on the PC will not work on the ftp, giving me an error during the sync.

Does Free File Sync has a feature that could copy theses files but renaming them to ...

... with that
2) In theory no, but I have seen reports that a total path length over 255 characters caused problems. No clue if any of that is OS or file system related.
3) Don't know. No experience with that
4) That should affect just how date and time are displayed; not how date/time is stored ...

What (if any) errors are listed in the log after a sync?
What is the length of the full path & filename? Windows has issues with long paths?

... ignore errors" is turned off.

Error.PNG

4th possibility: Long file paths. I renamed all the paths that have been too long. I used the software "Path Length Checker". Now I don't have paths longer than 240 characters. Also I turned on the Long Path Support in Windows 10.

Path Length.PNG

Long ...

I have run FreeFileSync and Process Monitor. On the remote PC I see a truncated 260 character length path.

There is no \\?\ at the beginning of the path. This is with 11.3

HTH mikexx, 07 Oct 2021, 15:25

Can you share the Process Monitor log?

I have run FreeFileSync and Process Monitor. On the remote PC I see a truncated 260 character length path.

There is no \\?\ at the beginning of the path. This is with 11.3

HTH

... Just some links:
Turn a string into a valid filename?
Google Drive API Search Files For Special Characters?
What is the maximum name length for a document on Google Drive?

And all that said, if an (individual) person knows that they're going to end up wanting to sync between "there ...

... 32K, that's great", but that's not the whole story. Every part of the path+name that makes up that 32K is limited to (a paltry) 255 chars.

Even ... this case, on a Win10 system with lfn enabled (long path), that too would work.

Naming Files, Paths, and Namespaces
Maximum Path Length Limitation

It is unique to long path lengths. This does not affect paths less than ~256. One with a length of 235 charcters is ok, one with 260 is not.

... You simply define one or more left and right sync base locations.
The path and path-length to those base locations may differ. The content of the base location will be synced, retaining the folder structure with in the base locations.

Q2
FFS always needs to run a Compare before performing a sync ...

(In the year 2020, & we're still running into Path length issues. In addition to path, in total, there is also a "path segment" limit of 255 characters. So you can't have a file name [itself, or any part of a path segment] that exceeds 255 characters. And then there are funky name+path length issues too ...

I get an error "Cannot create directory" while attempting to backup a number of files with what appear to be long file-names.

Is there a limit to a directory path length?

... but then ends up not responding.

At first I thought it was long path/filename related (was often stuck on a file path with length 174 characters/bytes), however one time it was on a much shorter length but the file count was 120,554

Any other information I can provide on this?

Version 10.1 ...

... these files.

Is it the plus signs in filenames??? Or folder/file total path length limitation???

Archival folder path is
/media/linux/LinuxFSBackup/LinuxGamingDesktopHomeDirectoryBackupDeleted

See attachment!

FreeFileSync does not have any limit on file path length.
But your file system might have one.

... more and looked at the files themselves, the other files which has similar PATH length do get copied. :/ Sorry about that I guess it could be the files.

... serious issues with syncing my desktop / laptop / NAS. It looks like the paths + filenames are too long, but FFS shows no error and all it does is not ... 3000 files! yikes!
I appreciate that windows does have a path/filename length limit, but usually when attemting to copy with File Manager it shows an ...

NAS is encryted, it has narrow limitations concerning the length of the file name

And just what are those limitations?
And is it file name only or file name + path?

... how this feature works? I also tried adding "\\?\" in front of the file path, but the end result was the same.
Here is an example of an error message ... file names. But sometimes the same error appears with file names with length of just 194 characters like the following example:

"Cannot copy file "C ...

... when comparing files that I suspect has something to do with the file path length. Is there a way to workaround this limitation? They're both HFS+ partitions.

Cannot enumerate directory "/Volumes/Ken/Synced/Investing/Historical Data/data-6/daily/macro/us".

Error Code 5: Input/output error ...

That makes sense kind of, but if the path is too long, the file names usually get truncated.
The path actually was not that long, about 12 characters ... root folder that is directly on the root of the drive. It's not a Char length issue.

Like I said, everything seemed to copy over ok. It was just odd ...

... registers, stack and portions of memory are available

Symbol search path is: * Invalid ... PlatformId 00000002 (VER_PLATFORM_WIN32_NT)
CSDVersionRva 00001F44
Length: 28
Buffer: {'Service Pack 3'}
Product: WinNt, suite: SingleUserTS ...