Hi AnnyRen,
These parameters are set in your ceph.conf file. You can find their
value by looking in the ceph.conf file, or by running
./cconf -c <path-to-ceph-conf-file> --lookup <param_name>
Also, after using injectargs to change a setting related to logging,
you must send the process a SIGHUP to get it to re-read its logging
settings.
cheers,
Colin
On Thu, Apr 7, 2011 at 2:44 AM, AnnyRen <annyren6@xxxxxxxxx> wrote:
> Hi:
>
> I'm trying to tune the options parameters defined in config.cc, like
>
> OPTION(mon_osd_down_out_interval, 0, OPT_INT, 300), // seconds
> OPTION(mds_replay_interval, 0, OPT_FLOAT, 1.0), // time to wait
> before starting replay again
> OPTION(mds_shutdown_check, 0, OPT_INT, 0),
> OPTION(mds_thrash_exports, 0, OPT_INT, 0),
> OPTION(mds_thrash_fragments, 0, OPT_INT, 0),
> OPTION(mds_dump_cache_on_map, 0, OPT_BOOL, false),
> OPTION(mds_dump_cache_after_rejoin, 0, OPT_BOOL, false),
> OPTION(mds_verify_scatter, 0, OPT_BOOL, false),
> OPTION(mds_debug_scatterstat, 0, OPT_BOOL, false),
> OPTION(mds_debug_frag, 0, OPT_BOOL, false),
> OPTION(mds_kill_mdstable_at, 0, OPT_INT, 0),
> OPTION(mds_kill_export_at, 0, OPT_INT, 0),
> OPTION(mds_kill_import_at, 0, OPT_INT, 0),
> OPTION(mds_kill_rename_at, 0, OPT_INT, 0),
> OPTION(mds_wipe_sessions, 0, OPT_BOOL, 0),
>
> to test the functionalities and performance in ceph,
> Could you tell me where to find the definitions of all parameters, so
> I could tune Ceph to run with the best performance?
> Thanks very much!
>
> Another question is if I want to adjust a config option, but I don't
> want to modify the ceph.conf and restart the monitor,
> could I use { ceph mon injectargs 0 '--mon_osd_down_out_interval
> 600' } the instruction to modify the settings?
> and how can I query the current settings I had made?
>
> For example
> I use the following command to enable debug messages
> {ceph mds injectargs 0 '--debug_ms 1 --debug_mds 10'}
> How to query the current setting and how to disable or cancel the setting?
>
> Please help me~ Thank you!!!
>
>
> Best Regards,
> Anny
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