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man pages section 8: System Administration Commands

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Updated: Thursday, June 13, 2019

vfs_crossrename (8)


vfs_crossrename - server side rename files across filesystem boundaries


vfs objects = crossrename


System Administration tools                                 VFS_CROSSRENAME(8)

       vfs_crossrename - server side rename files across filesystem boundaries

       vfs objects = crossrename

       This VFS module is part of the samba(7) suite.

       The vfs_crossrename VFS module allows server side rename operations
       even if source and target are on different physical devices. A "move"
       in Explorer is usually a rename operation if it is inside of a single
       share or device. Usually such a rename operation returns
       NT_STATUS_NOT_SAME_DEVICE and the client has to move the file by manual
       copy and delete operations. If the rename by copy is done by the server
       this can be much more efficient. vfs_crossrename tries to do this
       server-side cross-device rename operation.

       There are however limitations that this module currently does not

           The ACLs of files are not preserved,

           meta data in EAs are not preserved,

           renames of whole subdirectories cannot be done recursively, in that
           case we still return STATUS_NOT_SAME_DEVICE and let the client
           decide what to do,

           rename operations of huge files can cause hangs on the client
           because clients expect a rename operation to return fast.

       This module is stackable.

       crossrename:sizelimit = BYTES
           server-side cross-device-renames are only done for files if the
           filesize is not larger than the defined size in MiB to prevent
           timeouts. The default sizelimit is 20 (MiB)

       To add server-side cross-device renames inside of a share for all files
       sized up to 50MB:

                path = /data/mounts
                vfs objects = crossrename
                crossrename:sizelimit = 50

       This man page is part of version 4.9.3 of the Samba suite.

       The original Samba software and related utilities were created by
       Andrew Tridgell. Samba is now developed by the Samba Team as an Open
       Source project similar to the way the Linux kernel is developed.

       See attributes(7) for descriptions of the following attributes:

       |Availability   | service/network/samba |
       |Stability      | Volatile              |
       This software was built from source available at
       https://github.com/oracle/solaris-userland.  The original community
       source was downloaded from

       Further information about this software can be found on the open source
       community website at http://www.samba.org/.

Samba 4.9.3                       01/24/2019                VFS_CROSSRENAME(8)