From mboxrd@z Thu Jan  1 00:00:00 1970
From: Akio Takebe <takebe_akio@jp.fujitsu.com>
Subject: Re: [Patch][RFC] Support "xm dump" (is Re: Re: [Patch]
	Enable "sysrq c" handler for domU coredump)
Date: Thu, 03 Aug 2006 21:57:02 +0900
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To: Tristan Gingold <Tristan.Gingold@bull.net>, John Levon <levon@movementarian.org>, Keir Fraser <Keir.Fraser@cl.cam.ac.uk>
Cc: Muli Ben-Yehuda <muli@il.ibm.com>, Horms <horms@verge.net.au>, Akio Takebe <takebe_akio@jp.fujitsu.com>, xen-devel <xen-devel@lists.xensource.com>, Kouya Shimura <kouya@jp.fujitsu.com>
List-Id: xen-devel@lists.xenproject.org

Hi, all

>>   For example panic dump option is used when domU kernel is hungup,
>>   and we want to reboot and make coredump atomatically.
>I'd prefer 'xm crash' (or 'xm panic') and 'xm dump' .
>I'd prefer 'xm dump' *not* to panic by default.  It is too dangerous.
>
OK. I also think both are necessary.
How about the following specification?

1. xm crash
   This is only for crashing a domain.
   If enable-dump is yes, we can get the domain's core after crash.
   And If we want to atomatically reboot, we should set on_crash='restart'
   in domain configuration.
   
2. xm dump
   This is for live dumping a domain.
   This implementation is:
     1. pause the domain
     2. dumping the domain
     3. unpause the domain
     4. reboot (if --noreboot option, don't reboot)
     
     I think we want to reboot when we want to dump.
     So I want to be default reboot.
     
   BTW, I think the feature to online-dump domain and 
   hypervisor is also necessary.(meaning online is "don't pause")
   
Best Regards,

Akio Takebe