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Where is such block storage available? Seems fantastical...?
by dmitryminkovsky 4y ago
Where is such block storage available? Seems fantastical...?
- Nullabillity 4y agoCeph's RBD basically works like this (but it's a self-hosted software package, not IaaS), so you still need to manage the storage pool yourself.
- topspin 4y ago"Where is such block storage available? Seems fantastical...?" SAN vendors have been selling devices that deliver thin provisioned network block devices you can snapshot, clone, resize dynamically and replicate in a cluster for about 20 years now. Third parties can do all of this in cloud environments as well. See Netapp Cloud Volumes. You could roll your own using Ceph, or even a ghetto version with a subset of these capabilities with thin provisioned LVM+iSCSI, DRBD etc. You should be able to point and click a thin provisioned, dynamically expandable, snapshot-able, clone-able, replicate-able pay as you go network block device with whatever degree of performance, availability and capacity you wish to pay for. The fact that you can't is a function of the business model and mentality of IaaS cloud operators; they don't want your old fashioned 'stateful' workloads. Neither does kubernetes. So you're swimming against the current.