GNU bug report logs - #52919
Hidden "disk-image-rw" files aren't deleted after use, filling $tmpdir

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Message #8 received at 52919 <at> debbugs.gnu.org (full text, mbox):

From: Mathieu Othacehe <othacehe <at> gnu.org>
To: Leo Famulari <leo <at> famulari.name>
Cc: 52919 <at> debbugs.gnu.org
Subject: Re: bug#52919: Hidden "disk-image-rw" files aren't deleted after
 use, filling $tmpdir
Date: Mon, 03 Jan 2022 15:56:54 +0100

Hello Leo,

> This is new. I think the issue was introduced with recent work on (gnu
> system image), perhaps from this commit:
>
> https://git.savannah.gnu.org/cgit/guix.git/commit/?id=da924796744bbb7b035a986fe5d28d8d613ff6af

Before that commit "guix system vm" was always producing volatile
images, regardless of the "--volatile" argument. The new behaviour is to
only produce volatile images if "--volatile" is passed.

This means that by default, "disk-image-rw" are created in /tmp so that
QEMU can operate on RW images. The side effect is that those big images
can fill /tmp pretty quickly as you noticed.

We could use the ~/.cache/guix directory instead to store those
images. We could also make "--volatile" the default and introduce a
"--persistent" argument instead. That would restore the previous "guix
system vm" behaviour.

WDYT?

Thanks,

Mathieu

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