Linked by Thom Holwerda on Thu 6th Jul 2006 10:34 UTC, submitted by erast
Sun Solaris, OpenSolaris "OpenSolaris is not only powerful, but it is very innovative. Somebody smart figured that simplistic chroot or BSD jail concepts could be extended to the level where every single part of HW is virtualized. The Linux kernel also offers somewhat similar proposition called vserver, but we all know that until a proposition is not a part of main-line kernel tree it will never be a solution. Well, forget about Linux, we have OpenSolaris now and it truly opens new horizons for us to explore."
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by erast on Thu 6th Jul 2006 16:56 UTC in reply to "WTF"
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[*] Solution - in my understanding means intgrated and supported proposition either by distribution vendor or as a part of main-line kernel. Separately maintained set of patches which drasticaly changes behaviour of kernel are not counting.

Reply Parent Score: 3

RE[2]: WTF
by butters on Sat 8th Jul 2006 04:02 in reply to "RE: WTF"
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Most linux distributions use a separately maintained set of kernel patches that drastically change the behavior of the kernel, and that's just the default kernel. Many of them now ship a kernel image with dom0 and/or domU support for Xen (some are even officially supported). Some of them offer an unsupported kernel image suitable to host OpenVZ or VServer virtual private servers (VPS), which are OS-level virtualization solutions like Zones.

I've used both Zones and OpenVZ. They have virtually identical feature sets, and I found OpenVZ's utilities to be simpler.

With next-generation virtualization support in hardware (Pacifica/Vanderpool), patches for Xen domU support will no longer be required, and therefore distributions will be able to offer both paravirtualization and OS-level virtualization on the same system concurrently. This is not redundant, and it's actually a very useful model for server workload, maintenance, and availability management.

Besides, the facility to install Zone templates on Nexenta is based on debootstrap (a Debian tool), and it will only install Nexenta-based Zones, whereas OpenVZ has the concept of a template cache to allow support for VPSs based on multiple different Linux distributions to run concurrently on the same host, which itself can be a distinct flavor of Linux.

I have a system based on Gentoo with the openvz-sources kernel that boots N identical SLES 9-based VPSs on startup (where N is specified at the boot prompt), and it provides enough resource isolation to run Linux-HA (Heartbeat) clustering across the VPSs. It didn't take too much hacking to get it to work, and it showed my boss that it's indeed possible to run clustering software in an OS-level virtualized environment.

Reply Parent Score: 1