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xen-devel
Re: [Xen-devel] That xenstored console leak...
John Levon wrote:
> Here's what I'm using to fix it in 3.1. Obviously too risky for 3.2 now,
> and anyway, there's a much more serious problem in 3.2 - entire /vm/
> entries are leaked on domU reboot! I haven't got round to debugging that
> one yet since it's not present in 3.1, but it really should be fixed
>
I'm unable to reproduce the console leak on 3.2. I have tried rebooting
managed PV domU's several times with no orphaned console entries - using
'xm reboot' and rebooting within the guest itself.
I do however see the entire /vm/<uuid> nodes leaking and agree that this
is a rather serious bug as it could eventually cause swap thrashing in
dom0 [1]. E.g. after 3 reboots of PV domU xenstore contains
vm
faa7647e-142b-74c7-dc72-efd57fe6d0ef-1 = ""
image = "(linux (kernel ) (args 'mem=512M ') (device_model
/usr/lib64/xen/bin/qemu\..."
ostype = "linux"
...
faa7647e-142b-74c7-dc72-efd57fe6d0ef = ""
image = "(linux (kernel ) (args 'mem=512M ') (device_model
/usr/lib64/xen/bin/qemu\..."
ostype = "linux"
...
faa7647e-142b-74c7-dc72-efd57fe6d0ef-2 = ""
image = "(linux (kernel ) (args 'mem=512M ') (device_model
/usr/lib64/xen/bin/qemu\..."
ostype = "linux"
...
This leak is much worse than a single device leaking :-(. I'll have a
look but may be a day or two before I can get to it.
Jim
[1] http://lists.xensource.com/archives/html/xen-devel/2007-05/msg00641.html
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