[OpenIndiana-discuss] Huge ZFS root pool slowdown - diagnose root cause?

[John D Groenveld]

In message <4AB4A1DD-5A90-4F9A-B26E-9A71028A02C0 at comcast.net>, Lou Picciano wri
tes:
>Is this evidence of erroneous attempts to read boot blocks/loader on disk0?
>
>Given the machine BIOS identification of drives, dunno that I can be absolutel
>y certain disk0 is referring to one disk - or is the entire rpool seen a
>s disk0 once the OS is loading?

Does iostat(1M) -E report errors?

Have you tried interrogating the drives via smartctl?
<URL:https://wiki.openindiana.org/oi/Adding+SMART+disk+monitoring+as+a+SMF+service>

Happy hunting,
John
groenveld at acm.org