Determine limits of the nr of namespaces an nsm cluster can handle

DRAFT - incomplete

Test description

Current limits were estimated at 50

nsm checkup

internal/external arakoon cluster
? always extended to all master nodes
checkup reports 1 node - is this a local check only?
limit is 50 clusters / backend, afterwards create a new backend and continue from there?
what are the trigger for a new cluster to be created

safety = Configuration.get('/ovs/framework/plugins/alba/config|nsm.safety') -> default = 3? = DB roles nodes maxload = Configuration.get('/ovs/framework/plugins/alba/config|nsm.maxload') -> default = 75? = % van max van nsm cluster object = 50 ... capacity verhogen niet maxload

every 2/4 hours ... checkup occurs but fast creation will lead to overloaded nsms anyway ...

what's better increase nr of nsm cluster or overload them ...

nsm.safety = nr of hosts/nodes that are part of a single cluster nsm.maxload = max nr of clusters / host ?

maintenance single collapse ...

Cover area

// What area of the product is affected?

arakoon

// What type of functionality was used

data import
setup
scrubbing
...

// Which type of issue is this

data corruption/loss
maintainability
performance
reliability
scalability
stability

User story

// Describe the user story/scenario here. <---------------------------------------------------------->

Problem that arose

// Explain the problem that you got during the execution of the user story. // e.g. vm gave write error

Log

<---------------------------------------------------------->

Potential problem that might occur

// If the test is hypothetical, provide a short but detailed description of what to expect and why. <---------------------------------------------------------->

Special conditions

// Were there any special specific actions related to the user story? // Something not out of the ordinary. eg external arakoons

Additional information

Setup

// Be as specific as possible

Nr of nodes
external arakoons config for -- abm -- config -- nsm -- ovsdb -- voldrv
Type of setup: -- Hyperconverged -- Hyperscale -- Geoscale
Specific configuration settings -- backend -- preset -- vpool -- vdisk

openvstorage / integrationtests