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https://issues.apache.org/jira/browse/TS-3848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14711947#comment-14711947
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Pushkar Pradhan commented on TS-3848:
-------------------------------------
That is an interesting combination - wait_for_cache = 1 and empty
storage.config. So that should be allowed, right?
> ATS runs without cache or partial cache on disk errors
> ------------------------------------------------------
>
> Key: TS-3848
> URL: https://issues.apache.org/jira/browse/TS-3848
> Project: Traffic Server
> Issue Type: Bug
> Components: Cache
> Reporter: Pushkar Pradhan
> Assignee: Alan M. Carroll
> Fix For: 6.1.0
>
>
> Problem:
> If ATS fails to initialize one or more disks it continues to run without
> cache. This can cause origin overload.
> The situation can be somewhat mitigated by setting
> proxy.config.http.wait_for_cache = 1 and if none of the disks failed to
> initialize.
> However, even if wait_for_cache = 1 and only one or a few disks failed to
> initialize, ATS will continue to serve traffic.
> Proposed Solution:
> Define a new variable: proxy.config.http.cache.required
> Value range: 0-2
> 0 (default) - Do nothing
> 1 - Abort trafficserver if it failed to initialize all the disks/volumes
> 2 - Abort trafficserver if it failed to initialize even one of the disks or
> volumes.
> If proxy.config.http.cache.required = 1 and proxy.config.http.wait_for_cache
> = 1 and if proxy.config.http.cache.required > 0 then abort the traffic server
> if one or more cache disks/volumes could not be initialized.
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