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I'm trying to delete files on a NetApp server using smbclient //servername/share -c "deltree directory_to_delete". It works except for folders which have the read-only flag set. In this case, the command aborts with NT_STATUS_CANNOT_DELETE.

I can view the flags with smbclient //servername/share -c "ls directory_to_delete/*" and remove them with smbclient //servername/share -c "setmode directory_to_delete/subdir_with_ro_flag -r", but only per directory.

Is there a way to automate this (remove the read-only flag recursively) or any other way how to recursively delete a directory with read-only subdirectories?

Btw. the Windows explorer does not complain when deleting such directories (using the same credentials). I'm sure it removes the ro-flag silently.

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  • "Is there a way to automate this […]?" - is mounting the filesystem "properly" (i.e. with mount -t cifs //servername/share …) an option so that you can use rm -rf, rather than using smbclient? Commented Mar 5, 2024 at 19:51
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    Yes, this would be my fallback solution. The thing is that my smbclient command is part of a script which I don't want to rewrite if there is an other solution. Commented Mar 7, 2024 at 15:30

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The solution for NetApp is to enable the option cifs.perm_check_ro_del_ok.

options cifs.perm_check_ro_del_ok on

Source: https://library.netapp.com/ecmdocs/ECMP1196993/html/GUID-627F5269-6DE9-4FC8-BBC1-B1F34101FDFA.html

Btw. the read-only flag on directories has a complete other meaning than one would expect, see here.

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