[Samba] Debugging robocopy error 87 - The parameter is incorrect

Jeremy Allison jra at samba.org
Sat Sep 30 00:46:06 UTC 2017

On Wed, Sep 27, 2017 at 08:50:59AM -0400, Maxim Khitrov via samba wrote:
> Hi,
> I have Samba 4.6 running on FreeBSD 11.1 with a ZFS file system.
> Trying to use robocopy to mirror files from Windows 8.1. Most of the
> files are copied without any issues, but a few fail with the following
> error in the robocopy log:
> ERROR 87 (0x00000057) Copying File <path>
> The parameter is incorrect.
> Robocopy is executed with the following options:
> /R:0 /W:30
> Enabling level 3 logging for Samba, this error seems to correspond
> with the following messages:
> [2, class=vfs]   vfswrap_fsctl (0x90284): Currently not implemented.
> [3]   smbd_smb2_request_error_ex: smbd_smb2_request_error_ex: idx[1]
> ../source3/smbd/smb2_ioctl.c:309
> [2]   <user> closed file <path> (numopen=2) NT_STATUS_OK

Ah, that is FSCTL_QUERY_FILE_REGIONS, which we don't
implement yet. Until we do, you'll have to experiment
with robocopy options until you find the one that triggers
this FSCTL call.


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