iostat: What are the cbb devices?

richardm1

Dabbler
Joined
Oct 31, 2013
Messages
19
They seem to be related to my iSCSI-shared zvols. Can we get a synopsis of these devices and where (within the data pipeline) iostat is getting these numbers? :smile:
Code:
root@freenas[~]# iostat -xz -w 3 -o
                        extended device statistics
device       r/s     w/s     kr/s     kw/s  ms/r  ms/w  ms/o  ms/t qlen  %b
nvd0          12       0    126.9      0.0     0     0     0     0    0   0
da1           25      27    232.6    378.0    12     0   110     7    0  25
da2           23      26    211.5    375.4    13     0   109     7    0  25
cbb8           1       0      6.8      1.5     0     0     0     0    0   0
cbb9           1       0      6.8      0.2     0     0     0     0    0   0
cbb10       2544      31  54846.8    683.3     0     0     0     0    0  30
 
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