From: Wei Liu <Wei.Liu2@citrix.com>
To: 马磊 <aware.why@gmail.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
wei.liu2@citrix.com
Subject: Re: [BUG]: when using `xl restore`，xc_evtchn_alloc_unbound will raise this error
Date: Mon, 31 Dec 2012 12:03:15 +0000 [thread overview]
Message-ID: <1356955395.2917.41.camel@iceland> (raw)
In-Reply-To: <CA+ePHTCaJRCopiM-WoWYDBhrNrcmkNz7rcUmjfXtcHcTt=niqQ@mail.gmail.com>
On Mon, 2012-12-31 at 03:10 +0000, 马磊 wrote:
>
>
>
> I think the two files are mostly the same, but to be sure you
> need to
> look into the source file in both Linux and Xen. You should
> start from
> the hypervisor level, find out why it returns -EPERM. Root
> user in Dom0
> has nothing to do with privilege in hypervisor level.
>
>
> Wei.
>
> The scene is that there are more than 10 processes, each process calls
> `xl restore` to start a VM where a virus sample will run to detect the
> sample's behaviour about every 120 seconds.
> For a long time, such as 5 days or 15 days, the xen server where the
> processes run will raise this error with a certain probability.
> Maybe it has something to do with the hypervisor's stability.
This is not a usual scenario. Sorry I don't know how to reproduce this.
But the code path in hypervisor for evtchn_alloc_unbound is quite short,
you may try adding some debug output along the path to see which step
fails then report back.
Wei.
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next prev parent reply other threads:[~2012-12-31 12:03 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-26 10:03 [BUG]: when using `xl restore`，xc_evtchn_alloc_unbound will raise this error 马磊
2012-12-26 10:19 ` 马磊
2012-12-26 13:41 ` Wei Liu
2012-12-26 14:45 ` 马磊
2012-12-26 19:33 ` Wei Liu
2012-12-27 2:12 ` 马磊
2012-12-27 12:41 ` Wei Liu
2012-12-28 3:13 ` 马磊
2012-12-28 10:46 ` Wei Liu
2012-12-31 3:10 ` 马磊
2012-12-31 12:03 ` Wei Liu [this message]
2013-01-04 3:23 ` 马磊
2013-01-04 6:27 ` 马磊
2013-01-04 9:20 ` Ian Campbell
2013-01-04 11:34 ` 马磊
2013-01-04 11:42 ` Ian Campbell
2013-01-05 4:03 ` 马磊
2013-01-05 6:44 ` 马磊
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