[jira] [Updated] (TS-2399) Disk cache rawdevice permissions being bypassed

["David Carlin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TS-2399?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Carlin updated TS-2399:
-----------------------------

    Summary: Disk cache rawdevice permissions being bypassed  (was: Raw disk cache device permissions being bypassed)

> Disk cache rawdevice permissions being bypassed
> -----------------------------------------------
>
>                 Key: TS-2399
>                 URL: https://issues.apache.org/jira/browse/TS-2399
>             Project: Traffic Server
>          Issue Type: Bug
>          Components: Cache, Core
>            Reporter: David Carlin
>
> raw disk cache device permissions:
> {noformat}brw-rw---- 1 root disk 253, 4 Nov 26 16:03 /dev/dm-4
> {noformat}
> If I run 'traffic_server' by itself, I can't use the cache - I get permission errors opening it up:
> {noformat}
> [Nov 26 16:56:42.976] Server {0x2b4e29878540} WARNING: unable to open '/dev/dm-4': -13, Permission denied
> [Nov 26 16:56:42.976] Server {0x2b4e29878540} WARNING: could not initialize storage "/dev/dm-4" [unable to open]
> [Nov 26 16:56:42.976] Server {0x2b4e29878540} NOTE: cache clustering disabled
> {noformat}
> However, I can I start ATS fine and use the raw disk cache via the trafficserver startup script.
> These docs indicate that I should be setting the owner to the user that ATS runs as, but I don't need to as long as I start via the script:
> https://cwiki.apache.org/confluence/display/TS/FAQ#FAQ-rawdisk
> Once I change ownership of /dev/dm-4 to nobody then I can launch traffic_server by itself.



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