David Carlin created TS-2399:
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Summary: Raw disk cache device 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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