Subj : Re: Moving my boards to the cloud
To   : Nightfox
From : tenser
Date : Thu Dec 08 2022 11:11:29

On 07 Dec 2022 at 12:38p, Nightfox pondered and said...
 
 Ni>  Ma> The reasons I decided to do it is not having to worry about hardware
 Ni>  Ma> (housing it somewhere, powering it, maintaining it). Then there is th
 Ni>  Ma> security that the server is no where on my personal network at home a
 Ni>  Ma> all. The uptime is more secure. As I am protected again power outages
 Ni>  Ma> ISP outages which happen more often then from a data center. Addition
 Ni>  Ma> my entire server image is backed up daily without me having to do
 Ni>  Ma> anything. So easy to recover if something was to happen to the server
 Ni> 
 Ni> There are definitely some benefits there.
 Ni> 
 Ni> I wonder how they do their daily backups?  I imagine it would be best to
 Ni> power down the machine to do the backup (which means some downtime
 Ni> daily).  Also, if backups are daily, what if they do a backup when it's
 Ni> in a bad state?  Normally, backups should be in a good working
 Ni> configuration so that if something goes wrong, you know you can always
 Ni> revert back to a good working backup.

Since the system is virtualized, you basically snapshot it
by marking its storage device copy-on-write and stream the
image somewhere.  Assuming the guest OS has a working
filesystem that doesn't commit an unrecoverable state to
secondary store, you _should_ be able to bring the system
back online with a self-consistent filesystem; whether you
lose data or not is a different matter, which kind of
addresses the second part: roll to an earlier snapshot if
the one you try to recover to is bad.

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