Run copyit.py from SAN buffer volume to LTO tape library

[cherryleung93]

Hi, I'm recently trying to use copyit.py to copy files from SAN buffer volume to LTO tape library. Our institute uses a Quantum LTO library that exposes a SAN-based buffer volume which appears in Windows File Explorer as a folder structure of the LTO tape. Some files appear “locked” until the library writes or reads them back from tape. The files I need to copy contain image (tiff/jpg), audio (wav/mp3) or video (mov/mp4) files and I organize them based on file format. The CMD command are as follows:

py "C:\Users\cherryleung\AppData\Local\Programs\Python\Python313\Scripts\copyit.py" "source_directory of the folder" "directory of destination folder in LTO tape library"

Generating md5 for all files proceeds successfully but when copying the first file in the folder to the destination directory starts, "Access denied, Changing File Attributes" error would appear and this step would constantly looping. However, if I change the source directory to a single file, the whole process runs smoothly.

I don't know whether copyit.py can copy a collection of files at one time, or there is a way to loop the copyit.py command. I've read Joanna White's article on how it could be done in MacOS. I wonder whether this could be proceeded in Windows as well.

[kieranjol]

Hi Cherry, Thanks for reaching out and using copyit! At a glance, the issue seems to be the windows robocopy process itself that copyit is calling. Permissions are attempting to be set that is seems your account doesn’t have access to. LTO can always be a little finicky anyhow so I’m kinda not surprised. The reason why single file copy works is that this doesn’t use robocopy at all, it just copies with the python shutil functions and therefore avoids the permissions issues. It should be fairly straightforward to alter the robocopy command so it plays well with your system but I’d need a bit more info to make sure it fulfills your needs. Might be easier to shoot me an email maybe, but perhaps you might want to use another tool for these transfers if this is time sensitive! Best, K

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On Thu 27 Nov 2025 at 07:28, cherryleung93 ***@***.***> wrote: *cherryleung93* created an issue (kieranjol/IFIscripts#391) <#391> Hi, I'm recently trying to use copyit.py to copy files from SAN buffer volume to LTO tape library. Our institute uses a Quantum LTO library that exposes a SAN-based buffer volume which appears in Windows File Explorer as a folder structure of the LTO tape. Some files appear “locked” until the library writes or reads them back from tape. The files I need to copy contain image (tiff/jpg), audio (wav/mp3) or video (mov/mp4) files and I organize them based on file format. The CMD command are as follows: py "C:\Users\cherryleung\AppData\Local\Programs\Python\Python313\Scripts\copyit.py" "source_directory of the folder" "directory of destination folder in LTO tape library" Generating md5 for all files proceeds successfully but when copying the first file in the folder to the destination directory starts, "Access denied, Changing File Attributes" error would appear and this step would constantly looping. However, if I change the source directory to a single file, the whole process runs smoothly. copyit.to.LTO.problem.jpg (view on web) <https://github.com/user-attachments/assets/a20fd1cb-bdfc-4554-ad42-5bd2843964cd> I don't know whether copyit.py can copy a collection of files at one time, or there is a way to loop the copyit.py command. I've read Joanna White's article <https://digitensions.home.blog/2019/09/16/fixity/> on how it could be done in MacOS. I wonder whether this could be proceeded in Windows as well. — Reply to this email directly, view it on GitHub <#391>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAITFPWA6PBXF6VRR6BFB53362RZVAVCNFSM6AAAAACNK222VWVHI2DSMVQWIX3LMV43ASLTON2WKOZTGY3TAMJYHE2DIMA> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>