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From: Uladzimir Bely <ubely@ilbers.de>
To: "isar-users@googlegroups.com" <isar-users@googlegroups.com>,
        "Moessbauer, Felix" <felix.moessbauer@siemens.com>
Cc: "amikan@ilbers.de" <amikan@ilbers.de>
Subject: Re: [PATCH v2 0/4] Fix ccache issues
Date: Tue, 28 Mar 2023 18:56:50 +0300
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In mail from Tuesday, 28 March 2023 18:51:58 +03 user Moessbauer, Felix wrote:
> On Mon, 2023-03-27 at 08:27 +0300, Uladzimir Bely wrote:
> 
> > In mail from Monday, 13 February 2023 10:56:07 +03 user Anton
> > Mikanovich 
> > wrote:
> > 
> > > This patchset just fixes some ccache-related issues which prevented
> > > us
> > > from enabling ccache globally.
> 
> 
> Hi,
> 
> since this commit, I again see ccache issues when mixing cross and non-
> cross compilation for arm64 targets:
> 
> ccache: error: Failed to create directory /ccache/a/7: Not a directory
> 
> The error happened in the non-cross recipe.
> 
> I'm not 100% sure if this is related, but with ISAR f95f69d3 I did not
> observe these on the same layer.
> 
> Felix
> 

Probably, it's related to patch2.

You might have /ccache/a/ created earlier by 'root', and not it can't create a 
subdir as sbuild user.