Re: raid and cgd

[Alexander Nasonov <alnsn%yandex.ru@localhost>]

Alexander Nasonov wrote:
> My raid is made of two disks dk8 and dk9. When there is an activity on cgd,
> dk8 and dk9 shows more than 2x bytes each than cgd. Why is that?
>
>    wd0        1525   71M  66.8                   msix2 vec 0         2730 ftarg
>    wd1        1524   71M  59.3                   msix2 vec 2           75 wired
>    dk9        1524   71M  59.8
>    dk8        1524   71M  67.3
>  raid0         761   24M  86.9
>   cgd0         761   24M  99.5

It's still scrubbing raid0 (dd if=/dev/zero of=/dev/rcgd0d bs=32k)
but stats now look different and there is no 2-3x difference in
transfrer rates anymore.

cgd0 is configured with aes-cbc 256.

Disks: seeks xfers bytes %busy                   msix1 vec 4         2048 fmin
   wd0        3586  112M  30.7                   msix2 vec 0         2730 ftarg
   dk3                                           msix2 vec 1              itarg
   wd1        3586  112M  29.6                   msix2 vec 2           75 wired
   dk4                                           msix2 vec 3              pdfre
   dk5                                           msix2 vec 4              pdscn
   dk6
   dk7
   dk9        3568  111M  31.5
  dk10
   dk0
   dk1
   dk2
   dk8        3568  111M  32.0
  dk11
 raid0        3568  111M  39.0
  cgd0        3550  111M  94.5

-- 
Alex