[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Xen-devel] Live vm migration broken in latest xen-unstable
- To: "Ewan Mellor" <ewan@xxxxxxxxxxxxx>
- From: "sanjay kushwaha" <sanjay.kushwaha@xxxxxxxxx>
- Date: Tue, 5 Sep 2006 15:09:59 -0400
- Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
- Delivery-date: Tue, 05 Sep 2006 12:10:24 -0700
- Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:references; b=k6I/qMZVnrrMJNNHI/qp42mg6ZxUY6IbraTEGP9o9a88Yk4QaEkPrjpfWImvXy1ynMOTv09U7fo4q69BonxkjTFi4W4gVUkOXxu/Zn9s7IFEFS5Tv4xMPqNN9GqJUe16vTRlmoUtsmoMvp/XZ1TvTBqzyqNg2lo3crEPviZX98I=
- List-id: Xen developer discussion <xen-devel.lists.xensource.com>
Hi Ewan,
I did a "hg pull -u" on my tree which also got the changeset 11422. but I am still facing the same problem. btw this changeset seems to be specific to hvm domain while I am facing this problem with paravirtualized domain.
Thanks,
Sanjay
On 9/5/06, Ewan Mellor <
ewan@xxxxxxxxxxxxx> wrote:
On Fri, Sep 01, 2006 at 05:36:00PM -0400, sanjay kushwaha wrote:
> Folks,
> I am experiencing that live migration is not working in latest
> xen-unstable. I get the following message during migration
>
> [root@pc5 ksanjay]# xm migrate --live 1 [1]199.77.138.23
> Error: /usr/lib/xen/bin/xc_save 18 1 0 0 1 failed
> [root@pc5 ksanjay]#
>
> I traced the problem to a function in xen named set_sh_allocation() in
> file xen/arch/x86/mm/shadow/common.c
>
> tools/libxc/xc_linux_save.c:xc_linux_save() is called from the python
> script which makes the following hypercall
>
> if (live) {
> if (xc_shadow_control(xc_handle, dom,
> XEN_DOMCTL_SHADOW_OP_ENABLE_LOGDIRTY,
> NULL, 0, NULL, 0, NULL) < 0) {
> ERR("Couldn't enable shadow mode");
> goto out;
> }
> last_iter = 0;
> } else {
> -----------
>
> this particular hypercall leads to the call of set_sh_allocation which
> fails in the following code
>
> if ( d-> arch.shadow.total_pages < pages )
> {
> /* Need to allocate more memory from domheap */
> pg = alloc_domheap_pages(NULL, SHADOW_MAX_ORDER, 0);
> if ( pg == NULL )
> {
> SHADOW_PRINTK("failed to allocate shadow pages.\n");
> return -ENOMEM;
> }
>
> alloc_domheap_pages fails and returns NULL. however I think I have enough
> memory available so this function should not fail.
>
> Is there anybody else experiencing the same problem? Could someone please
> tell me how to fix it?
I've put some changes into xen-unstable today which might help. The last fix
is on its way through testing now. Look out for xen-unstable changeset
11422, and try that, see how you get on.
Cheers,
Ewan.
--
----------------------
PhD Student, Georgia Tech
http://www.cc.gatech.edu/~ksanjay/
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
