Re: giant release osd down

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On Mon, 3 Nov 2014, Mark Kirkwood wrote:
> On 03/11/14 14:56, Christian Balzer wrote:
> > On Sun, 2 Nov 2014 14:07:23 -0800 (PST) Sage Weil wrote:
> > 
> > > On Mon, 3 Nov 2014, Christian Balzer wrote:
> > > > c) But wait, you specified a pool size of 2 in your OSD section! Tough
> > > > luck, because since Firefly there is a bug that at the very least
> > > > prevents OSD and RGW parameters from being parsed outside the global
> > > > section (which incidentally is what the documentation you cited
> > > > suggests...)
> > > 
> > > It just needs to be in the [mon] or [global] section.
> > > 
> > While that is true for the "pool default" values and even documented
> > (not the [mon] bit from a quick glance though) wouldn't you agree that
> > having osd* parameters that don't work inside the [osd] section to be at
> > the very least very non-intuitive?
> > 
> > Also as per the below thread, clearly something more systemic is going on
> > with config parsing:
> > https://www.mail-archive.com/ceph-users@xxxxxxxxxxxxxx/msg13859.html

Ah, I missed that thread.  Sounds like three separate bugs:

- pool defaults not used for initial pools
- osd_mkfs_type not respected by ceph-disk
- osd_* settings not working

The last one is a real shock; I would expect all kinds of things to break 
very badly if the [osd] section config behavior was not working.  I take 
it you mean these options:

osd_op_threads = 10
osd_scrub_load_threshold = 2.5

How did you determine that they weren't taking effect?  You can do 'ceph 
daemon osd.NNN config show | grep osd_op_threads' to see the value in teh 
running process.

If you have a moment, can you also open tickets in teh tracker for the 
other two?

Thanks!
sage


 > 
> +1
> 
> I'd like to see clear(er) descriptions (and perhaps enforcement?) of which
> parameters go in which section.
> 
> I'm with Christian on this - osd* params that don't work inside the [osd]
> section is just a foot gun for new (ahem - and not so new) users!
> 
> regards
> 
> Mark
> 
> 
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