VMware RedHat guest - swap on LVM or disk partition
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VMware RedHat guest - swap on LVM or disk partition
Hi.
We are building RedHat Linux 5.4 64-bit VMs on VMware, and it has been suggested that the primary swap should be on a disk partition (sda2), rather than on LVM.
It would be great to get comments & thoughts on this.
FYI, the role of the machines is app/web servers, and they may have 2 or 4 virtual CPUs and 4, 8, or 12 GB memory. The other filesystems are /boot (sda1), / (LVM on sda), /app (LVM on sdb), and the machines have VMware Tools installed.
LVM would add a small overhead as it maps virtual blocks to the real blocks on the drive. Aside from that, and the overhead is marginal I can't see why you would go out of your way to put swap on a real partition. By default the Redhat installer will create a real partition for /boot and LVM volumes for swap and root.
phil.d.g:
Yes, you have summarised my thoughts on the matter.
prodev05:
Our environment is ESX, and the server that the VM is currently resident on is a Proliant BL685c G1 blade with 4x dual-core 2.8 GHz CPUs and 64 GB memory, running vSphere 4 Enterprise. Our environment consists of something like 18 blades running a selection of Linux and Windows VMs. The storage is implemented on SAN-attached EVA disk arrays.
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