On Tue, Sep 13, 2011 at 2:00 PM, Rudi Ahlers <Rudi at softdux.com> wrote: > On Tue, Sep 13, 2011 at 1:52 AM, Thomas Dukes <tdukes at sc.rr.com> wrote: >> >> >>> -----Original Message----- >>> From: centos-bounces at centos.org >>> [mailto:centos-bounces at centos.org] On Behalf Of ken >>> Sent: Monday, September 12, 2011 12:36 AM >>> To: CentOS mailing list >>> Subject: Re: [CentOS] Vitualization and Partitioning >>> >>> On 09/11/2011 11:10 PM Emmanuel Noobadmin wrote: >>> > Hi, >>> > >>> >> When I do the install, do I or should I setup a separate partition >>> >> for guest >>> > That would be better from a performance point of view >>> > >>> >> OS's? From the redhat docs, it looks like the guest OS's reside at >>> >> /var/lib/libvirt/images/. >>> > This should be using files as disk files, which I did and >>> found it to >>> > be a problem when there is heavy I/O. >>> >>> I like LVM (for the reasons you cite). Would you (anyone?) >>> say it's best to have one LV per guest or one LV for all guests? >>> >>> >>> tnx. >> >> I'm new to this but I would think you would want a separate LV for each >> guest. Seems I read somewhere, that you need one core per guest as well. >> That's why I'm opting for the Xeon processor rather than the iCore(x). Four >> cores v. two. More options. >> >> Can't believe this thread hasn't stirred more response. Maybe we all are in >> the learning phase. >> >> Eddie >> >> _______________________________________________ > > We use LVM on all our virtual hosting servers since it's much easier to manage. > > > You basically setup a PV volume spanning the whole drive(s), and then > a 10GB (or larger if you need to) LVM volume for /root, 10GB for /var, > 2GB for /tmp & 5GB for /home. > > > Then for any VM's just add LVM volumes as needed, for example: > > /dev/Volume001/vm1_root - 10GB > /dev/Volume001/vm1_swap - 1GB > > > Another tip: Don't use the default LVM volume naming scheme, but > instead name the LVM volumes according to your server name, i.e. > server01 & server02. This way if server01's HDD crashes and you need > to mount it on server002 for recovery purposes, you won't have > conflicting LVM volumes > > Hi, Interesting subject. Let me participate too. Suppose we are going to install 3 VMs, I think it is proper to create separate LVMs like this /dev/vg_server1/lv.server1 and mount it as /var/lib/libvirt/images/server1 /dev/vg_server2/lv.server2 and mount it as /var/lib/libvirt/images/server2 /dev/vg_server3/lv.server3 and mount it as /var/lib/libvirt/images/server3 If I mount in that way, Is it possible to take live snapshot backup while these 2 servers are running? Hope to hear from you.. > -- > Kind Regards > Rudi Ahlers > SoftDux > > Website: http://www.SoftDux.com > Technical Blog: http://Blog.SoftDux.com > Office: 087 805 9573 > Cell: 082 554 7532 > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > -- Thank you Indunil Jayasooriya