Comments on: Installing RHEL 5 using the VMware Paravirtualized SCSI driver (pvscsi)

By: Graham

Graham — Thu, 01 Jul 2010 21:55:11 +0000

Hey Sebastian,

Yeah that is to be expected. You need to relink the pvscsi kernel modules back to the new kernel that you’ve installed. Running the vmware-config-tools.pl script should do it for you.

Cheers,

Graham.

By: Sebastian

Sebastian — Wed, 30 Jun 2010 01:32:30 +0000

Graham, it seems that whenever you upgrade the kernel you lose the paravirtualized driver, don’t you?

By: Graham

Graham — Thu, 27 May 2010 11:31:41 +0000

Hey Maurizio,

I’m not sure if Redhat Enterprise is available to download, but the free version of it, CentOS is here . Keep in mind that this is just the boot cd, you will need to expose the rest of the install tree on a NFS/FTP/WWW server so your guest vm can get at it.

Cheers,

Graham.

By: Maurizio Marini

Maurizio Marini — Thu, 27 May 2010 08:09:23 +0000

Is available this iso somewhere to download?

tia

By: JeremyinNC

JeremyinNC — Wed, 17 Feb 2010 17:10:14 +0000

Nice. On the Windows side there are massive gains if you’re VMs are doing a lot of IO. I ran an interesting test the other day – I took a Server 2008R2 x64 machine (laptop, I’m lazy and desktops are heavy but stay with me) and exported an NFS share using the built in NFS server. Then I mounted it as a volume on our ESX host, moved a VM to it and ran SQLIO tests *on the VM*. I got 2.6k IOPS (SSD disk).

Then I ran the exact same test locally on the laptop. 2.7k IOPS. Obviously it’s limited by the laptop’s crappy controller but it also tells me that even on a relatively high IO VM you’re not paying a lot for the hypervisor.

This is using NFS as the data protocol obviously (dual 1gig NICs to the storage switch from the ESX host, single 1gig on the laptop but that didn’t appear to be a bottleneck).

Trying to get our Ubuntu VMs to boot off the paravirtual devices is not fun