[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] null domains | xen4.4
On Mon, 2014-12-01 at 12:48 +0300, Alexey wrote: > Hi, all! > > We are once again faced with the null-domains problem. > At this moment we have xen node with 49 null-domains and if I create new > domain and shutdown it I w'll get a new one null-domain. > > All blkback and netback kernel process are exists. There is no qemu > process running. > I can't delete any vif or stop disk, which was used by dead domain. What do you mean here, does a vif or disk still exist for the dead domain then? > How we can prevent appearance of null-domains? > How we can unlock resources of existing null-domains? A null domain remains when a page owned by that domain is still referenced from somewhere. The output of the 'q' debug key sometimes exposes the source of such references. ("xl debug-key q" will send that, the result appears in "xl dmesg", alternatively Ctrl-A three times on the serial console then 'q'). > # xl info > host : xen23 > release : 3.10-3-amd64 Any chance you could try a newer dom0 kernel? > xen_commandline : tmem=1 loglvl=all noreboot dom0_mem=5120M > dom0_vcpus_pin console=vga vga=current Are you able to reproduce when tmem is not enabled? Ian. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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