[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] xen ballon errors in kernel logs even if I disabled it after kernel upgrade from 3.2 to 3.14
On 11/12/14 09:40, Fabio Fantoni wrote: > Il 26/09/2014 14:02, David Vrabel ha scritto: >> On 26/09/14 12:46, Fabio Fantoni wrote: >>> Il 26/09/2014 12:22, David Vrabel ha scritto: >>>> On 26/09/14 09:54, Fabio Fantoni wrote: >>>>> Yesterday I updated wheezy kernel (3.2) to 3.14 from >>>>> wheezy-backports to >>>>> solves one critical network problem with new windows pv driver. >>>>> Today I saw the kernel logs full of this error: >>>>> xen:balloon: reserve_additional_memory: add_memory() failed: -17 >>>> Fixed by: >>>> >>>> 3dcf63677d4eb7fdfc13290c8558c301d2588fe8 (xen/balloon: cancel >>>> ballooning >>>> if adding new memory failed) >>>> >>>> Ballooned memory is required by backends which is why you're seeing it >>>> even with auto-ballooning disabled. >>>> >>>> David >>>> >>> Thanks for your reply. >>> Is correct that show it also if dom0 have fixed memory size and xl.conf >>> have balloning disabled? >> Yes. >> >>> Can this problem cause a crash or other important aftermath? >> No. It's harmless. >> >>> Can you apply or request the backport of this fix to stable branchs? >> No. A fix for a harmless log message is not critical enough for stable. >> >> David > > Thanks for your reply. > New debian kernel is freezed to 3.16 version without this fix > (3.16.7-ckt2-1), I not found a workaround for it, even with dom0 mem > fixed and autoballoning disabled I still have big syslog and kern.log > full of these messages when I start 1 or more domUs that make difficult > see other parts of logs. > And another strange thing that I not understand is why older kernel > (3.2) not have this problem. > Someone has advices about it please? You can workaround it by pre-ballooning dom0 with a Xen command line option such as dom0_mem=4G,max:5G Don't have too much ballooned memory or dom0 may run out of memory and not boot or run very slowly. You can also disable XEN_BALLOON_MEMORY_HOTPLUG. David _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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