Oracle Solaris Performance, Panics, Hangs, and Dtrace (MOSC)

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System maintenance — evacuate all Zones!

in Oracle Solaris Performance, Panics, Hangs, and Dtrace (MOSC)

The number one use case for live migration today is for evacuation: when a Solaris Zones host needs some maintenance operation that involves a reboot, then the zones are live migrated to some other willing host. This avoids scheduling simultaneous maintenance windows for all the services provided by those zones.

Implementing this today on Solaris 11.3 involves manually migrating zones with individual zoneadm migrate commands, and especially, determining suitable destinations for each of the zones. To make this common scenario simpler and less error prone, Solaris 11.4 Beta comes with a new command sysadm(8) for system maintenance that also allows for zone evacuation.

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