Re: grub2-mkconfig

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On Fri, 2 Jun 2023 13:18:47 +0200
Patrick Dupre <pdupre@xxxxxxx> wrote:

> Hello,
> 
> On a machine with a triple boot (an 3 HD, all fedora), I get a
> bunches of
> 
> File descriptor 3 (pipe:[240388]) leaked on vgs invocation. Parent
> PID 75317: grub2-probe
> 
> when I run grub2-mkconfig
> I have /boot/efi (UEFI) on /dev/sda3 (in fat16)
> and
> grub2 core.img on /dev/sda1
> 
> Can I fix this?
> 
> In addition,
> What are your recommendations for running (which systems)
> grub2-mkconfig
> and
> grub2-install /dev/sda

I never see that error when I run grub2-mkconfig, in both uefi and
legacy.  So, I suspect there is something about the way your system is
set up causing the issue.

A search turned up this link that describes the cause and a workaround.
https://superuser.com/questions/1437911/file-descriptor-3-leaked-on-vgcfgbackup-invocation-parent-pid-bash
Other links explained that this is happening in the lvm utilities, and
is harmless, basically a warning.  You must have lvm enabled, and the
grub2-mkconfig is probing them, and triggering lvm to issue this error.
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