Re: [PATCH 5/5] zfcpdump: Add install script for zfcpdump

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Hi Javier,

On Wed, 1 Aug 2018 11:11:08 +0200
Javier Martinez Canillas <javierm@xxxxxxxxxx> wrote:

> Hi Philipp,
> 
> On 07/25/2018 01:36 PM, Philipp Rudo wrote:
> > Since version 198 (Feb 2013) systemd contains kernel-install, a script
> > managing kernel installs. This script allows execution of drop-in scripts
> > for customization. Add such a drop-in script to s390-tools to handle the
> > installation of zfcpdump kernels and simplify interactions between zfcpdump
> > and zipl.
> > 
> > The script supports two installation modes. One recommended by the
> > BootLoaderSpecs [1] to /boot/<machine-id>/<kernel-version> directories and
> > one directly to /boot. In the second case files are renamed during
> > installation to <original-name>-<kernel-version> to guarantee unique names.
> >   
> 
> IIUC even when the script supports these two paths, zipl only supports to have
> the zfcpdump image in $ZFCPDUMP_IMAGE, and that's why the script uses symlinks
> to point to the different supported installation paths.
> 
> Maybe you can mention this in the commit message and script header? Since at
> least for me it wasn't evident until I read the code.

Sure I can do. I won't be in the office the rest of the week. So you have to
wait for next week till I sent v2.

> 
> > Because the zfcpdump kernel is so special make the script stand-alone and
> > prevent any other script from being executed (exit 77) when a zfcpdump is
> > installed. Especially avoid functionality like creating an initrd (already
> > provided by s390-tools) or creating a boot entry (the zfcpdump kernel
> > should not be used for any other purpose than dumping).
> >  
> 
> Yes, this makes sense.
>  
> > The script requires systemd >= 203.
> > 
> > [1] https://www.freedesktop.org/wiki/Specifications/BootLoaderSpec/
> > 
> > Signed-off-by: Philipp Rudo <prudo@xxxxxxxxxxxxx>  
> 
> The patch looks good to me.
> 
> Reviewed-by: Javier Martinez Canillas <javierm@xxxxxxxxxx>

Thanks

Philipp

> 
> Best regards,
> ---
> Javier Martinez Canillas
> Software Engineer - Desktop Hardware Enablement
> Red Hat
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