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https://issues.apache.org/jira/browse/TS-1869?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13766589#comment-13766589
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Alan M. Carroll commented on TS-1869:
-------------------------------------
The root is that the disk array in Store is really a two dimensional varying
width array. Each Span instance in the array is also the head of an internally
linked list. The Store initialization groups Span instances for the same
physical device in to these lists but the cache initialization logic ignores
the list. This works out for physical (raw) devices but for file storage units
only one for each device is used. You can in fact have more than one file
entry, it is that each entry must be on a different device or (roughly
equivalent) under different mount points.
There are other issues that make this a bit tricky to fix. The investigation is
ongoing.
> Multiple cache lines in storage.config are ignored.
> ---------------------------------------------------
>
> Key: TS-1869
> URL: https://issues.apache.org/jira/browse/TS-1869
> Project: Traffic Server
> Issue Type: Bug
> Components: Cache
> Reporter: Leif Hedstrom
> Assignee: Alan M. Carroll
> Labels: A
> Fix For: 5.0.0
>
>
> Using on-filesystem cache entries, and adding more than one line simply has
> no effect, only the last one seems to be used. It works fine for "raw"
> devices though.
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