ZFS Determine who writing zpool

Hi.

I'm trying to find the source of the large number of writes to my SSDs, which is causing them to wear out prematurely.

zpool iostat shows me this:

Code:
zboot       15.3G  48.2G      0    239      0  2.58M
zboot       15.3G  48.2G      0      0      0      0
zboot       15.3G  48.2G      0      0      0      0
zboot       15.3G  48.2G      0      0      0      0
zboot       15.3G  48.2G      0      0      0      0
zboot       15.3G  48.2G      0    339      0  7.81M
zboot       15.3G  48.2G      0      0      0      0
zboot       15.3G  48.2G      0      0      0      0
zboot       15.3G  48.2G      0      0      0      0
zboot       15.3G  48.2G      0      0      0      0
zboot       15.3G  48.2G      0    184      0  1.34M
zboot       15.3G  48.2G      0      0      0      0
zboot       15.3G  48.2G      0      0      0      0
zboot       15.3G  48.2G      0      0      0      0
zboot       15.3G  48.2G      0      0      0      0
zboot       15.3G  48.2G      0    254      0  5.99M
zboot       15.3G  48.2G      0      0      0      0
zboot       15.3G  48.2G      0      0      0      0
zboot       15.3G  48.2G      0      0      0      0
zboot       15.3G  48.2G      0      0      0      0
zboot       15.3G  48.2G      0      0      0      0
zboot       15.3G  48.2G      0    255      0  1.98M

every 5 seconds somebody makes a lot of writes. top in iomode does not show any process doing this.
I tried disabling the "suspects" I saw on top - nothing changed, still the same writes every 5 seconds.
How do I find the cause?

Thanks
 
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