Frank Thommen wrote:
> ** WARNING: This mail is from an external source **
>
>
> Hi,
>
> how can a specific device driver in CentOS 7 be blacklisted, so that it
> doesn't load at boot time? We have Infiniband adapters which are not
> completely supported by CentOS and we want to silence the error messages
> for the time being.
>
> I tried with the files
>
> /etc/modprobe.d/blacklist
> /etc/modprobe.d/blacklist.conf
>
> and with entries
>
> mlx5_core
> mlx5_ib
>
> blacklist mlx5_core
> blacklist mlx5_ib
>
> install mlx5_core /dev/null
> install mlx5_ib /dev/null
>
> all found on different websites.
>
> None of these entries helps. mlx5_core and mlx5_ib are still loaded and
> the system is flooded with error messages.
They are probably being loaded via the initramfs at boot time - i.e.
before the real root is mounted (where the blacklist entries exist)
I believe you can either add 'rd.driver.blacklist=<driver_name>' to the
grub2 boot cmdline - or generate a new initramfs (using 'dracut -f -v' -
make a copy of your current initramfs first) - as this should pull in
entries in /etc/modprobe.d/
James Pearson
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