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From: Gerd Knorr <kraxel@suse.de>
To: Ewan Mellor <ewan@xensource.com>
Cc: xen-devel <xen-devel@lists.xensource.com>
Subject: Re: "xm save" trouble -- deadlock?
Date: Wed, 02 Nov 2005 16:35:00 +0100	[thread overview]
Message-ID: <4368DCA4.6000709@suse.de> (raw)
In-Reply-To: <20051102100429.GA408@leeni.uk.xensource.com>

> I've done a threaded fix already.  You're welcome to have a go at doing it
> without a thread if you want, but I think it'll be messy.

Ok, wile waiting for the fix show up in the public mercurial tree I've 
workarounded the issue with a wrapper script which redirects xc_save 
stderr to a file.  There I get this:

    FNI 21 : [10000003,768] pte=25fae063, mfn=00025fae, pfn=00001b00 
[mfn]=deadbeef
    FNI 21 : [10000003,769] pte=25faf063, mfn=00025faf, pfn=00001b01 
[mfn]=deadbeef
    FNI 21 : [10000003,770] pte=25fb0063, mfn=00025fb0, pfn=00001b02 
[mfn]=deadbeef
    [ ... many more of these ... ]

In the source code there where message is printed I find a comment 
saying "/* I don't think this should ever happen */".  Hmm.  It does. 
And probably it is a problem.  "xm save" works now, but I can't restore 
the domain:

   master-xen root /tmp# xm restore /vm/ttylinux/suspend.img
   Error: Could not read store/console MFN

Ideas anyone?  This is a ttylinux instance running out of a ramdisk.

   Gerd

  parent reply	other threads:[~2005-11-02 15:35 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-11-01 16:43 "xm save" trouble -- deadlock? Gerd Knorr
2005-11-01 17:15 ` Gerd Knorr
2005-11-01 18:54   ` Ewan Mellor
2005-11-02  9:25     ` Gerd Knorr
2005-11-02 10:04       ` Ewan Mellor
2005-11-02 11:24         ` Gerd Knorr
2005-11-02 15:35         ` Gerd Knorr [this message]
2005-11-02 15:41           ` Ewan Mellor
2005-11-02 17:23             ` Gerd Knorr
2005-11-01 18:58   ` Ewan Mellor
2005-11-02 11:34     ` Gerd Knorr
2005-11-02 18:28       ` Kip Macy
2005-11-03  8:53         ` Gerd Knorr

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