[jira] [Updated] (TS-4552) Lifecycle hook on cache disk state change

["Leif Hedstrom (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TS-4552?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Leif Hedstrom updated TS-4552:
------------------------------
    Fix Version/s: sometime

> Lifecycle hook on cache disk state change
> -----------------------------------------
>
>                 Key: TS-4552
>                 URL: https://issues.apache.org/jira/browse/TS-4552
>             Project: Traffic Server
>          Issue Type: Improvement
>          Components: Cache, TS API
>            Reporter: Leif Hedstrom
>             Fix For: sometime
>
>
> Sometimes, it might be useful to change runtime behavior based on changes (e.g. disk failures) to the cache. For example, lets say I have 4 disks, and I know that I need 2 disks to function reasonably well. If I now lose two disks, I'd want ATS to take action (plugin would implement the action), such as shutting down, or going into no-accept mode etc.
> Also, on startup, the same logic would apply. If I can't satisfy my cache requirements at startup, it should not let ATS pass the cache-ready lifecycle hook.



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