[ceph-users] mds_cache_memory_limit value

Hervé Ballans herve.ballans at ias.u-psud.fr
Fri Oct 5 01:33:06 PDT 2018


Hi all,

I have just configured a new value for 'mds_cache_memory_limit'. The 
output message tells "not observed, change may require restart".
So I'm not really sure, has the new value been taken into account 
directly or do I have to restart the mds daemons on each MDS node ?

$ sudo ceph tell mds.* injectargs '--mds_cache_memory_limit 17179869184';
2018-10-04 16:25:11.692131 7f3012ffd700  0 client.2226325 
ms_handle_reset on IP1:6804/2649460488
2018-10-04 16:25:11.714746 7f3013fff700  0 client.4154799 
ms_handle_reset on IP1:6804/2649460488
mds.mon1: mds_cache_memory_limit = '17179869184' (not observed, change 
may require restart)
2018-10-04 16:25:11.725028 7f3012ffd700  0 client.4154802 
ms_handle_reset on IP0:6805/997393445
2018-10-04 16:25:11.748790 7f3013fff700  0 client.4154805 
ms_handle_reset on IP0:6805/997393445
mds.mon0: mds_cache_memory_limit = '17179869184' (not observed, change 
may require restart)
2018-10-04 16:25:11.760127 7f3012ffd700  0 client.2226334 
ms_handle_reset on IP2:6801/2590484227
2018-10-04 16:25:11.787951 7f3013fff700  0 client.2226337 
ms_handle_reset on IP2:6801/2590484227
mds.mon2: mds_cache_memory_limit = '17179869184' (not observed, change 
may require restart)

Thanks,
Hervé

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