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man pages section 8: System Administration Commands

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Updated: Thursday, June 13, 2019
 
 

vfs_crossrename (8)

Name

vfs_crossrename - server side rename files across filesystem boundaries

Synopsis

vfs objects = crossrename

Description

System Administration tools                                 VFS_CROSSRENAME(8)



NAME
       vfs_crossrename - server side rename files across filesystem boundaries

SYNOPSIS
       vfs objects = crossrename

DESCRIPTION
       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
       solve:

           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.

OPTIONS
       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)

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

                   [testshare]
                path = /data/mounts
                vfs objects = crossrename
                crossrename:sizelimit = 50

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

AUTHOR
       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.



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


       +---------------+-----------------------+
       |ATTRIBUTE TYPE |   ATTRIBUTE VALUE     |
       +---------------+-----------------------+
       |Availability   | service/network/samba |
       +---------------+-----------------------+
       |Stability      | Volatile              |
       +---------------+-----------------------+
NOTES
       This software was built from source available at
       https://github.com/oracle/solaris-userland.  The original community
       source was downloaded from
       https://download.samba.org/pub/samba/stable/samba-4.9.3.tar.gz

       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)