linux-kernel - Re: [PATCH 1/1] ktest.pl: Fix incorrect reboot for grub2bls

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Message-ID: <20201130013256.oryyz4wxd356n74o@gabell>
Date:   Sun, 29 Nov 2020 20:32:56 -0500
From:   Masayoshi Mizuma <msys.mizuma@...il.com>
To:     Libo Chen <libo.chen@...cle.com>
Cc:     linux-kernel@...r.kernel.org, rostedt@...dmis.org,
        m.mizuma@...fujitsu.com
Subject: Re: [PATCH 1/1] ktest.pl: Fix incorrect reboot for grub2bls

On Fri, Nov 20, 2020 at 06:12:43PM -0800, Libo Chen wrote:
> This issue was first noticed when I was testing different kernels on
> Oracle Linux 8 which as Fedora 30+ adopts BLS as default. Even though a
> kernel entry was added successfully and the index of that kernel entry was
> retrieved correctly, ktest still wouldn't reboot the system into
> user-specified kernel.
> 
> The bug was spotted in subroutine reboot_to where the if-statement never
> checks for REBOOT_TYPE "grub2bls", therefore the desired entry will not be
> set for the next boot.
> 
> Add a check for "grub2bls" so that $grub_reboot $grub_number can
> be run before a reboot if REBOOT_TYPE is "grub2bls" then we can boot to
> the correct kernel.
> 
> Fixes: ac2466456eaa ("ktest: introduce grub2bls REBOOT_TYPE option")
> 
> Signed-off-by: Libo Chen <libo.chen@...cle.com>

Thank you for the fix!
I tested the patch with fedora33. It works well.

Please feel free to add:

	Tested-by: Masayoshi Mizuma <m.mizuma@...fujitsu.com>

Thanks!
Masa

> ---
>  tools/testing/ktest/ktest.pl | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl
> index cb16d2aac51c..54188ee16c48 100755
> --- a/tools/testing/ktest/ktest.pl
> +++ b/tools/testing/ktest/ktest.pl
> @@ -2040,7 +2040,7 @@ sub reboot_to {
>  
>      if ($reboot_type eq "grub") {
>  	run_ssh "'(echo \"savedefault --default=$grub_number --once\" | grub --batch)'";
> -    } elsif ($reboot_type eq "grub2") {
> +    } elsif (($reboot_type eq "grub2") or ($reboot_type eq "grub2bls")) {
>  	run_ssh "$grub_reboot $grub_number";
>      } elsif ($reboot_type eq "syslinux") {
>  	run_ssh "$syslinux --once \\\"$syslinux_label\\\" $syslinux_path";
> -- 
> 2.27.0
>