[PATCH v2] Add --force option to step 2 in early-kdump-howto.txt
by s.morishima＠fujitsu.com
For step2 in early-kdump-howto.txt, --force option of dracut
is necessary to rebuild system initramfs. Without --force option,
executing step2 fails because system initramfs already exists.
Signed-off-by: Shigeki Morishima <s.morishima(a)jp.fujitsu.com>
---
early-kdump-howto.txt | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/early-kdump-howto.txt b/early-kdump-howto.txt
index b8cab6a..f4fae36 100644
--- a/early-kdump-howto.txt
+++ b/early-kdump-howto.txt
@@ -34,14 +34,16 @@ You can rebuild the initramfs with earlykdump support with below steps:
For the failure_action, you can choose anything other than "reboot".
2. rebuild system initramfs with earlykdump support.
- # dracut --add earlykdump
+ # dracut --force --add earlykdump
+
+ NOTE: Recommend to backup the original system initramfs before performing
+ this step to put it back if something happens during boot-up.
3. add rd.earlykdump in grub kernel command line.
Note:
[1]. Early kdump initramfs size will be large because it includes vmlinuz and
-kdump initramfs. And for step 2 if you are sure to overwrite system initramfs
-you can backup the original initramfs and use "--force" option.
+kdump initramfs.
[2]. Early kdump inherits the settings of normal kdump, so any changes that
caused normal kdump rebuilding also require rebuilding the system initramfs
--
1.8.3.1
1 year, 2 months
RE: [PATCH] Add --force option to step 2 in early-kdump-howto.txt
by s.morishima＠fujitsu.com
Hello,
Thanks for the comment.
> If we remove this, how about explicitly adding a backup process before
> rebuilding initramfs for safety's sake? I think there will also be times
> when we want to put it back completely.
You're right. I will add the statement as note under step 2.
Best Regards,
Shigeki Morishima
> -----Original Message-----
> From: HAGIO KAZUHITO(萩尾 一仁) <k-hagio-ab(a)nec.com>
> Sent: Friday, January 31, 2020 12:37 AM
> To: Morishima, Shigeki/森島 茂貴 <s.morishima(a)fujitsu.com>; 'kexec(a)lists.fedoraproject.org'
> <kexec(a)lists.fedoraproject.org>
> Subject: RE: [PATCH] Add --force option to step 2 in early-kdump-howto.txt
>
> > -----Original Message-----
> > Hello,
> >
> > For step2 in early-kdump-howto.txt, --force option of dracut
> > is necessary to rebuild system initramfs. Without --force option,
> > executing step2 fails because system initramfs already exists.
> >
> > Signed-off-by: Shigeki Morishima <s.morishima(a)jp.fujitsu.com>
> > ---
> > early-kdump-howto.txt | 5 ++---
> > 1 file changed, 2 insertions(+), 3 deletions(-)
> >
> > diff --git a/early-kdump-howto.txt b/early-kdump-howto.txt
> > index b8cab6a..5f592c1 100644
> > --- a/early-kdump-howto.txt
> > +++ b/early-kdump-howto.txt
> > @@ -34,14 +34,13 @@ You can rebuild the initramfs with earlykdump support with below steps:
> > For the failure_action, you can choose anything other than "reboot".
> >
> > 2. rebuild system initramfs with earlykdump support.
> > - # dracut --add earlykdump
> > + # dracut --force --add earlykdump
> >
> > 3. add rd.earlykdump in grub kernel command line.
> >
> > Note:
>
> > [1]. Early kdump initramfs size will be large because it includes vmlinuz and
> > -kdump initramfs. And for step 2 if you are sure to overwrite system initramfs
> > -you can backup the original initramfs and use "--force" option.
> > +kdump initramfs.
>
> Hi,
>
> If we remove this, how about explicitly adding a backup process before
> rebuilding initramfs for safety's sake? I think there will also be times
> when we want to put it back completely.
> (It may be good to have such a procedure as well.)
>
> Thanks,
> Kazu
>
> >
> > [2]. Early kdump inherits the settings of normal kdump, so any changes that
> > caused normal kdump rebuilding also require rebuilding the system initramfs
> > --
> > 1.8.3.1
> >
> > Best Regards,
> > Shigeki Morishima
> >
> > ----------------------------------------------------------------------
> > 森島 茂貴(Morishima Shigeki)
> > 富士通ミッションクリティカルソフトウェア株式会社(MCS)
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1 year, 2 months