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For whatever it's worth, OS-based virtualization is one of the core tenants of SmartOS[1] -- an illumos derivative that makes heavy use of zones (which were ins

For whatever it's worth, OS-based virtualization is one of the core tenants of SmartOS[1] -- an illumos derivative that makes heavy use of zones (which were inspired by FreeBSD jails). And it also has ZFS, natch. ;) [1] http://smartos.org http://smartos.org Update/clarification: SmartOS is running tens of thousands of VMs and virtual OS containers in production at Joyent -- and has for years. It is new in nomenclature and exposure, perhaps, but not in terms of core technology or production readiness.

tachion 14y ago
I am familiar with remainings of Solaris, that is Illumos and its technologies, likes zones, dtrace and native ZFS, but the problem is that I personally wouldnt be very hasty to use such young OS in production, and I think I would have even more issues with convincing the management layer to do so, once I would manage to convince myself ;) But, even if that'd happen, that's again just another good stack, like FreeBSD and Jails, and not fancy framework like Docker.
- chrisfarms 14y ago
  Actaully "zones" in smartos are created/managed/uploaded/download/etc via imgadm and vmadm which are not unlike docker commands at all. http://wiki.smartos.org/display/DOC/How+to+create+a+zone+%28+OS+virtualized+machine+%29+in+SmartOS http://wiki.smartos.org/display/DOC/How+to+create+a+zone+%28...
- jpetazzo 14y ago
  I'm not sure what you're referring to when you say "such young OS". Solaris zones and ZFS have been around for almost a decade. Docker is young, but it wraps around LXC, cgroups, AUFS, and namespaces. Cgroups and AUFS were introduced in 2006. Namespaces are more recent, but they are basically a reimplementation of concepts from OpenVZ and VServer (and the latter is more than 10 years old). FreeBSD jails are great, and they have also been around for a while; but they are still lacking a lot of features (a jail doesn't have its own network stack, and resource accounting and limiting isn't as evolved as what cgroups provide), and unionfs is far from being as stable as AUFS. Don't misunderstand me: FreeBSD jails are awesome if you're doing FreeBSD and want lightweight virtualization. For the rest of us, LXC is just as awesome, and docker lowers the barrier of entry considerably! My 2c.

tachion 14y ago

I am familiar with remainings of Solaris, that is Illumos and its technologies, likes zones, dtrace and native ZFS, but the problem is that I personally wouldnt be very hasty to use such young OS in production, and I think I would have even more issues with convincing the management layer to do so, once I would manage to convince myself ;) But, even if that'd happen, that's again just another good stack, like FreeBSD and Jails, and not fancy framework like Docker.

chrisfarms 14y ago
Actaully "zones" in smartos are created/managed/uploaded/download/etc via imgadm and vmadm which are not unlike docker commands at all. http://wiki.smartos.org/display/DOC/How+to+create+a+zone+%28+OS+virtualized+machine+%29+in+SmartOS http://wiki.smartos.org/display/DOC/How+to+create+a+zone+%28...
jpetazzo 14y ago
I'm not sure what you're referring to when you say "such young OS". Solaris zones and ZFS have been around for almost a decade. Docker is young, but it wraps around LXC, cgroups, AUFS, and namespaces. Cgroups and AUFS were introduced in 2006. Namespaces are more recent, but they are basically a reimplementation of concepts from OpenVZ and VServer (and the latter is more than 10 years old). FreeBSD jails are great, and they have also been around for a while; but they are still lacking a lot of features (a jail doesn't have its own network stack, and resource accounting and limiting isn't as evolved as what cgroups provide), and unionfs is far from being as stable as AUFS. Don't misunderstand me: FreeBSD jails are awesome if you're doing FreeBSD and want lightweight virtualization. For the rest of us, LXC is just as awesome, and docker lowers the barrier of entry considerably! My 2c.