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List: user-mode-linux-user
Subject: Re: [uml-user] Properly shutting down a VM, Host resource usage
From: Tony Su <tonysu () su-networking ! com>
Date: 2013-02-06 3:05:42
Message-ID: CACNuKqTjOhVYkUy_TC_FGfiQe+8_cEpov5Z3HVzJEGfV+oVFPg () mail ! gmail ! com
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Thx for the interesting idea of mounting a Host mountpoint within a VM.
Might work in special situations but I can immediately anticipate problems
between distros and even distro versions because of
- init scripts may or may not exist
- degree of systemd integration. Something as simple as a systemd shutdown
will point to the shutdown target unit instead of init scripts.
- virtual and actual directories supporting systemd. Although systemd
encourages default locations, it also supports virtual directories if
distros continue to use their own locations. Commands may or may not
describe paths sufficiently.
- Debian uses Upstart which does things its own way, so SysV and systemd
components won't likely work.
Would be so much easier if the fs included a complete set of basic
functionality specific to that fs.
IMO,
TSU
On Feb 4, 2013 7:05 PM, "Lakshmipathi.G" <lakshmipathi.g@gmail.com> wrote:
> Hi Tony -
> Did something like 'init 0' works ?
>
> Sometime back,I faced few problems after shutdown with 'init 0' file
> system became read-only !
> more info here :
> http://lists.fedoraproject.org/pipermail/india/2011-April/004567.html
>
>
> --
> ----
> Cheers,
> Lakshmipathi.G
> FOSS Programmer.
> www.giis.co.in
>
>
> On Tue, Feb 5, 2013 at 3:15 AM, Tony Su <tonysu@su-networking.com> wrote:
>
>> Hello,
>> Now that I recently was able to boot some UML VMs, I quickly ran into
>> the problem that the fs I am using from fs.devloop.org.uk <all> seem
>> to be missing some fairly standard executables like /sbin/shutdown.
>>
>> So, am wondering how to best shutdown a VM missing "shutdown," should
>> it and others like PING be retrieved from the distro's repo?
>>
>> Tony
>>
>>
>> ------------------------------------------------------------------------------
>> Everyone hates slow websites. So do we.
>> Make your web apps faster with AppDynamics
>> Download AppDynamics Lite for free today:
>> http://p.sf.net/sfu/appdyn_d2d_jan
>> _______________________________________________
>> User-mode-linux-user mailing list
>> User-mode-linux-user@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
>>
>
>
> <http://www.giis.co.in>
[Attachment #5 (text/html)]
<p>Thx for the interesting idea of mounting a Host mountpoint within a VM. Might work \
in special situations but I can immediately anticipate problems between distros and \
even distro versions because of</p> <p>- init scripts may or may not exist<br>
- degree of systemd integration. Something as simple as a systemd shutdown will point \
to the shutdown target unit instead of init scripts.<br>
- virtual and actual directories supporting systemd. Although systemd encourages \
default locations, it also supports virtual directories if distros continue to use \
their own locations. Commands may or may not describe paths sufficiently.<br>
- Debian uses Upstart which does things its own way, so SysV and systemd components \
won't likely work.</p> <p>Would be so much easier if the fs included a complete \
set of basic functionality specific to that fs.</p> <p>IMO,<br>
TSU </p>
<div class="gmail_quote">On Feb 4, 2013 7:05 PM, "Lakshmipathi.G" <<a \
href="mailto:lakshmipathi.g@gmail.com">lakshmipathi.g@gmail.com</a>> wrote:<br \
type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 \
.8ex;border-left:1px #ccc solid;padding-left:1ex"> Hi Tony -<br>Did something like \
'init 0' works ?<br><br>Sometime back,I faced few problems after shutdown \
with 'init 0' file system became read-only !<br>more info here : <a \
href="http://lists.fedoraproject.org/pipermail/india/2011-April/004567.html" \
target="_blank">http://lists.fedoraproject.org/pipermail/india/2011-April/004567.html</a><br>
<br><br>-- <br>----<br>Cheers,<br>Lakshmipathi.G<br>FOSS Programmer.<br><a \
href="http://www.giis.co.in" target="_blank">www.giis.co.in</a><br><br><br><div \
class="gmail_quote">On Tue, Feb 5, 2013 at 3:15 AM, Tony Su <span dir="ltr"><<a \
href="mailto:tonysu@su-networking.com" \
target="_blank">tonysu@su-networking.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex">Hello,<br> Now that I recently was able to boot some UML VMs, \
I quickly ran into<br> the problem that the fs I am using from <a \
href="http://fs.devloop.org.uk" target="_blank">fs.devloop.org.uk</a> <all> \
seem<br> to be missing some fairly standard executables like /sbin/shutdown.<br>
<br>
So, am wondering how to best shutdown a VM missing "shutdown," should<br>
it and others like PING be retrieved from the distro's repo?<br>
<br>
Tony<br>
<br>
------------------------------------------------------------------------------<br>
Everyone hates slow websites. So do we.<br>
Make your web apps faster with AppDynamics<br>
Download AppDynamics Lite for free today:<br>
<a href="http://p.sf.net/sfu/appdyn_d2d_jan" \
target="_blank">http://p.sf.net/sfu/appdyn_d2d_jan</a><br> \
_______________________________________________<br> User-mode-linux-user mailing \
list<br> <a href="mailto:User-mode-linux-user@lists.sourceforge.net" \
target="_blank">User-mode-linux-user@lists.sourceforge.net</a><br> <a \
href="https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user" \
target="_blank">https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user</a><br>
</blockquote></div><br><br><a href="http://www.giis.co.in" target="_blank"></a>
</blockquote></div>
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