[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-users] Can be installed more than 32 GB RAM on Ubuntu 10.04 64 bit XEN VM?
On Wed, 2015-07-29 at 04:24 -0700, dataworks.biz wrote: > Does Ubuntu lucid support more than 32 GB of ram? > I have a XEN server running a PV guest. I upgraded from 32 to 64 GB RAM. > The domain0 (host) sees all the RAM and starts the domainU (guest) with > all > the RAM. But inside the guest OS I can only see 32 of 64 GB RAM. I think > this is a limitation of ubuntu 10.04 because the xentop command give me > the > guest with all the RAM. > Domain0 (host) specifications : > - Ubuntu 12.04.2 LTS > - 3.5.0-34-generic kernel > - 64 bit > - all RAM is addressed > DomainU (guest) specifications : > - Ubuntu 10.04.4 LTS > - 2.6.32-40-server kernel > - 64 bit > - ParaVirtualized > - it sees only 32GB of 64 GB RAM. > There was no problem while upgrading from 16 to 32 GB. > > This is very similar to this old topic: > http://old-list-archives.xenproject.org/xen-users/2011-06/msg00393.html > > But I guess I already have the newer kernel... I think your 2.6.32 based domU kernel is old enough that it still has the old compile time limit, which Ubuntu appears to have set to 32GB. Ian. _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxx http://lists.xen.org/xen-users
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