immense delayed write to file system (ZFS and UFS2), performance issues

[Emil Mikulic]

On Tue, Jan 19, 2010 at 09:16:41AM +0100, Gerrit K?hn wrote:
> Thanks for bringing up this topic here. I have drives showing up close to
> 800000 load cycle counts here. Guess it's time for that fix... :-|

Device Model:     WDC WD10EACS-00ZJB0
Firmware Version: 01.01B01
Serial Number:    WD-WCASxxxxxxxx
[...]
  9 Power_On_Hours   17046
193 Load_Cycle_Count 1045512

The above drive is in a raidz of three.
The other two drives from that batch have already failed.  :(

In another system:

Device Model:     WDC WD10EACS-00D6B0
Firmware Version: 01.01A01
Serial Number:    WD-WCAUxxxxxxxx
[...]
  9 Power_On_Hours   13111
193 Load_Cycle_Count 7