Default config value for osd_disk_thread_ioprio_class

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Hi,

In the process of upgrading a cluster from Giant to Hammer I saw this
on the OSD logs:

2015-04-29 14:02:37.015454 7f887875e900 -1 osd.456 43089
set_disk_tp_priority(22) Invalid argument:
osd_disk_thread_ioprio_class is  but only the following values are
allowed: idle, be or rt

That is correct, since config_opts.h says:

OPTION(osd_disk_thread_ioprio_class, OPT_STR, "") // rt realtime be
best effort idle

It's nothing bad, but it would be nicer if we got rid of it.

What to do here? Allow "" as a config setting and then ignore it or
set the default to rt, be or idle?

- -- 
Met vriendelijke groet / Kind regards,

Wido den Hollander

PCextreme B.V.

http://www.pcextreme.nl/contact
Tel direct: +31 (0)118 700 212
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