[lustre-discuss] Monitoring Lustre IOPS on OSTs

[Passerini Marco]

Hi,


I'd like to monitor the IOPS on the Lustre OSTs.


I have stats like this:


[root at xxx04 ~]# lctl get_param obdfilter.xxx-OST0000.stats
obdfilter.xxx-OST0000.stats=
snapshot_time             348287.096066602 secs.nsecs
start_time                0.000000000 secs.nsecs
elapsed_time              348287.096066602 secs.nsecs
read_bytes                3075 samples [bytes] 0 1134592 2891776 2568826650624
write_bytes               1312266 samples [bytes] 1 4194304 5424381521966 4303559271585613940
read                      3075 samples [usecs] 0 489 31040 3417458
write                     1312266 samples [usecs] 1 1630262 6193336309 3686004830368845
setattr                   20373 samples [usecs] 1 61 133314 1090612
punch                     4600 samples [usecs] 3 65 51155 732959
sync                      4 samples [usecs] 443 997 2853 2250847
destroy                   30777 samples [usecs] 11 42634 20978596 33571893182
create                    993 samples [usecs] 1 29995 534579 1518818913
statfs                    135519 samples [usecs] 0 24 610182 4231650
get_info                  108 samples [usecs] 1 3092 6218 17971060
set_info                  10047 samples [usecs] 1 22 83418 770166

>From the docs https://wiki.lustre.org/Lustre_Monitoring_and_Statistics_Guide I see:

"""
For read_bytes and write_bytes:

    First number = number of times (samples) the OST has handled a read or write.

"""


I guess this can be considered as OST IOPS?


Regards,

Marco Passerini
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