CODEWITHSUNDEEP
node.jslibuv
callum
callum

Reputation: 37829

What does the "EXDEV: cross-device link not permitted" error mean?

What does this error actually mean? What is a "cross-device link"?

It is mentioned on this libuv page but it doesn't give any details beyond "cross-device link not permitted".

Upvotes: 42

Views: 57701

Answers (6)

Nico Serrano
Nico Serrano

Reputation: 797

In my case using Node v16.20 I changed:

await fs.promises.rename(appPath, targetDir)

to

await fs.promises.cp(appPath, targetDir, {
    recursive: true,
})
await fs.promises.rm(appPath, {
    recursive: true,
})

Upvotes: 1

Sunil Sapkota
Sunil Sapkota

Reputation: 1220

In my case i change the code from

for (const file of files) {
            const tempPath = file[1].filepath;
            await fs.rename(tempPath, targetPath + file[1].originalFilename);
        }

To the following code

  for (const file of files) {
      const tempPath = file[1].filepath;
      await fs.copyFile(tempPath, targetPath + file[1].originalFilename);
      await fs.rm(tempPath);
    }

and it work fine for me

I think the issue is we cannot move the temp file directly from node

Upvotes: 1

Mauricio Romero
Mauricio Romero

Reputation: 169

I guess you are trying to copy a file from /temp folder since the form. I solved it coping, not renaming

        fs.copyFile(oldpath, newpath, function (err) {
            if (err) throw err;
            res.write('File uploaded and moved!');
            res.end();
        });

Upvotes: 17

Suleman Hasib
Suleman Hasib

Reputation: 177

Just for they guys who are using Linux this happens when your old path i.e. /tmp and new path are on different partitions or disks.

Upvotes: 2

rsp
rsp

Reputation: 111446

It is used for EXDEV on Linux:

See man rename manpage:

EXDEV oldpath and newpath are not on the same mounted filesystem. (Linux permits a filesystem to be mounted at multiple points, but rename() does not work across different mount points, even if the same filesystem is mounted on both.)

This error is also used when there is ERROR_NOT_SAME_DEVICE on Windows, see:

For more info see:

winerror.h 0x80070011 #define ERROR_NOT_SAME_DEVICE The system cannot move the file to a different disk drive.

Upvotes: 20

robertklep
robertklep

Reputation: 203514

It sounds like you're trying to rename a file across "device" (partition) boundaries.

Say that /tmp is a different partition than /. That means that you're not allowed to do this:

fs.rename('/tmp/myfile.txt', '/myfile.txt', ...)

(the same applies to fs.renameSync() as well, obviously)

If you want to do that, you need to first copy the file to its new location, and subsequently remove the old file. There are modules, like mv, that can help you with that.

Upvotes: 44

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