EC2 (local) instance storage
Posted Dec 8, 2012 23:56 UTC (Sat) by man_ls
In reply to: Optimizing stable pages
Parent article: Optimizing stable pages
I am not sure what "dies" means in this context. If the instance is stopped or terminated, then the instance storage is lost. If the instance is rebooted then the same instance storage is kept. Usually you reboot machines which "die" (i.e. crash or oops), so you don't lose instance storage.
In short: any new EC2 instance will of course get a new instance storage, but the same instance will get the same instance storage.
I understand your last paragraph even less. Why do transparent encryption? Just use regular filesystem options (i.e. don't use FALLOC_FL_NO_HIDE_STALE) and you are good. I don't get what a journal has to do with it.
Again, keep in mind that many instance types keep their root filesystem on local instance storage. Would you run / without a journal? I would not.
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