Re: [Xen-devel] suspending a domain in the ngio world

[Kip Macy <kmacy@xxxxxxxxxxx>]

questions:
1)
Does this extend as far as not being able to stop without destroying at
all?
kmacy@curly r ./xc_dom_control.py list
Dom  Name             Mem(kb)  CPU  State  Time(ms)
0    Domain-0          257128   0    r-    28516
1    This is VM 2       64920   0    --     5227
kmacy@curly r ./xc_dom_control.py stop 1
return code 0
kmacy@curly r ./xc_dom_control.py list
Dom  Name             Mem(kb)  CPU  State  Time(ms)
0    Domain-0          257052   0    r-    28769
1    This is VM 2       64996   0    --     5245

I can still interact with the domain over its console.

============================================================
2)
I take it that many of the following are expected right now when
destroying a domain with I/O in flight:

(XEN) DOM0: (file=memory.c, line=935) Unknown domain '2'
(file=main.c, line=266) Failed MMU update transferring to DOM2
========================================================
3)
I just did the following:
[root@xen-vm0 ~]$ while (1)
while? dd if=/dev/zero of=/tmp/bwout count=1024 bs=1024k
while? end
1024+0 records in
1024+0 records out
1024+0 records in
1024+0 records out
1024+0 records in
1024+0 records out
1024+0 records in
1024+0 records out
1024+0 records in
1024+0 records out

and then I saw this on the machine console:

__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
VM: killing process python
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
VM: killing process syslogd
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
VM: killing process sendmail
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0xf0/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
VM: killing process ypbind
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
VM: killing process ypbind
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
VM: killing process sshd
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
VM: killing process sshd
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
VM: killing process tcsh
__alloc_pages: 0-order allocation failed (gfp=0xf0/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0xf0/0)
__alloc_pages: 0-order allocation failed (gfp=0xf0/0)
__alloc_pages: 0-order allocation failed (gfp=0xf0/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
VM: killing process crond
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
VM: killing process crond
(XEN) (file=traps.c, line=469) GPF (0004): fc520e08 -> fc52e2d2
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
VM: killing process portmap
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
VM: killing process umount


I guess memory management is a work in progress?

Thanks.


                                -Kip


On Sat, 15 May 2004, Keir Fraser wrote:

> > Ok - thanks. Is this because all the dependencies for stopping a domain
> > are not in place? Or are the interfaces in flux in general? What I'm
> > trying to do is get the bits in place for core debugging of non-
> > privileged domains.
>
> xend doesn't do setup/teardown of i/o connections properly yet. What's
> there is a very basic lashup to create very simple configurations --
> but not enough to suspend/resume them.
>
>  -- Keir
>
>
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