[HN Gopher] Mayastor: Lightning Fast Storage for Kubernetes
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Mayastor: Lightning Fast Storage for Kubernetes
Author : botayhard
Score : 17 points
Date : 2020-11-06 20:02 UTC (2 hours ago)
(HTM) web link (www.percona.com)
(TXT) w3m dump (www.percona.com)
| dilyevsky wrote:
| Trying to filter all the marketing speak since there is almost
| zero info on the actual technology of Mayastor engine. Is this
| thing basically NVMf array orchestrator for k8s? So if your NVMf
| target crashes your PV goes bye bye?
| mgerdts wrote:
| According to https://blog.mayadata.io/openebs-
| mayastor-0.3.0-lands-soon-k...
|
| > But the nexus is also capable of performing transformations
| on the I/O passing through it. For example, for reasons of
| availability and durability, we might wish to maintain more
| than one copy of the data contained by a PV. The nexus supports
| this by dispatching multiple copies of any writes which are
| received for the volume, to replicas hosted on other Mayastor
| Storage Nodes within the cluster (the actual replica count is
| defined by the Volume's Storage Class). Only when all replicas
| have acknowledged their writes will the nexus signal completion
| of the transaction back to the consumer. That is to say,
| policy-based workload protection in Mayastor is based on
| synchronous replication.
|
| Presumably life can go on so long as a replica survives.
| gravypod wrote:
| Your PV would likely still exist but the `mount` command on the
| pod's cgroup will fail and you'll get into a crashloop with a
| NotReady (I think).
| mgerdts wrote:
| It's written in rust, in the off chance that is important to
| anyone on this site.
| DJBunnies wrote:
| You just never know.
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(page generated 2020-11-06 23:00 UTC)