From: Cong Wang <xiyou.wangcong-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Dave Young <dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: initramfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH] auto setup network without netroot
Date: Mon, 30 Jan 2012 16:51:46 +0800 [thread overview]
Message-ID: <4F265A22.2090407@gmail.com> (raw)
In-Reply-To: <4F265A0B.1000402-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
On 01/30/2012 04:51 PM, Dave Young wrote:
> On 01/30/2012 04:33 PM, Cong Wang wrote:
>
>> On Mon, 30 Jan 2012 at 06:43 GMT, Dave Young<dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> wrote:
>>> Current dracut network only will be setup when netroot is used. But there are
>>> some cases we need network even without netroot. For example kdump will need
>>> copy vmcore to remote machine via scp or nfs mount. OTOH, if we use dracut as
>>> a recovery system the network is helpful even root is not a network device.
>>>
>>> This implementation is based on the manually bring up method. Here add a kernel
>>> cmdline argument rd.neednet. If rd.neednet is set dracut will bring up network
>>> with ifup $INTERFACE -m. If netroot is used we still keep original behavior.
>>>
>>
>> I don't think we really need to introduce a new cmdline, I think we
>> can re-use ip= cmdline. Currently, if ip= is specified but netroot is
>> not, ip= will be ignored. We can change this, let dracut bring up
>> network as long as we have ip=, even we don't have netroot.
>
>
> For netroot case it is supported as well for no ip= or other network
> cmdline, please see the net-genrules.sh code
Irrelevant.
>
> We will also setup network when rd.neednet=1 in case no special ip=
> provided for convenience.
>
With rd.neednet=1 but without ip=, how can you know which nic we need to
bring up?
next prev parent reply other threads:[~2012-01-30 8:51 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-30 6:43 [PATCH] auto setup network without netroot Dave Young
2012-01-30 8:33 ` Cong Wang
2012-01-30 8:51 ` Dave Young
[not found] ` <4F265A0B.1000402-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-01-30 8:51 ` Cong Wang [this message]
[not found] ` <4F265A22.2090407-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2012-01-30 8:59 ` Dave Young
[not found] ` <4F265C01.4010701-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-01-30 9:03 ` Cong Wang
[not found] ` <4F265CDB.7070204-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2012-01-30 9:16 ` Dave Young
[not found] ` <4F266004.5080501-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-01-30 9:31 ` Cong Wang
[not found] ` <4F266389.70303-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2012-01-30 9:49 ` Dave Young
[not found] ` <4F2667A4.4080203-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2012-01-30 10:03 ` Cong Wang
[not found] ` <4F266AEE.703-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2012-01-31 1:42 ` Dave Young
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4F265A22.2090407@gmail.com \
--to=xiyou.wangcong-re5jqeeqqe8avxtiumwx3w@public.gmane.org \
--cc=dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org \
--cc=initramfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox