[systemd-devel] [PATCH] fstab-generator: introduce rd.weak_sysroot to bypass failures in sysroot.mount

WANG Chao chaowang at redhat.com
Tue Jul 30 08:49:03 PDT 2013

On 07/30/13 at 04:02pm, Tom Gundersen wrote:
> On Tue, Jul 30, 2013 at 2:27 PM, WANG Chao <chaowang at redhat.com> wrote:
> > On 07/30/13 at 02:05pm, Tom Gundersen wrote:
> >> On Tue, Jul 30, 2013 at 1:53 PM, WANG Chao <chaowang at redhat.com> wrote:
> >> >  - It's not before initrd-root-fs.target.
> > In case of kdump, 2nd kernel initrd is used to mount non-root local/remote
> > filesystem and dump vmcore there. The kdump script is running right
> > before switch-root and will reboot after saving vmcore.
> >
> > So mounting sysroot isn't quite justified in this case.  But it's still
> > acceptable (since it's readonly mount), as long as it's not keeping
> > systemd from reaching initrd.target (so kdump script can run later).
> If you don't have the Before=initrd-root-fs.target it means that
> you'll have a race: sometimes the rootfs will be mounted  before kdump
> does whatever it does, and sometimes it won't. Would an option be to
> not specify a root= at all in your case?

We share the same concern. A simple way is the script check if root is
mounted and determine the next step.

But strip root= doesn't sound good to me :(

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