Date: Fri, 29 Jan 2010 03:43:42 +0300 From: Boris Samorodov <bsam@ipt.ru> To: freebsd-stable@FreeBSD.org Subject: Re: immense delayed write to file system (ZFS and UFS2), performance issues Message-ID: <51651473@ipt.ru> In-Reply-To: <cf9b1ee01001261045j3b0901cen74469a545e47fb49@mail.gmail.com> (Dan Naumov's message of "Tue, 26 Jan 2010 20:45:10 %2B0200") References: <cf9b1ee01001261045j3b0901cen74469a545e47fb49@mail.gmail.com>
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On Tue, 26 Jan 2010 20:45:10 +0200 Dan Naumov wrote:
> This discussion made me have a look at my 2tb WD Green disks...
So did I. Hm, it's a "nice" feature:
-----
Model Family: Western Digital RE2-GP family
Device Model: WDC WD1000FYPS-01ZKB0
Firmware Version: 02.01B01
User Capacity: 1 000 204 886 016 bytes
...
9 Power_On_Hours 0x0032 082 082 000 Old_age Always - 13206
193 Load_Cycle_Count 0x0032 001 001 000 Old_age Always - 1883216
-----
Seems I'm a winner with my nearly 2M cycles. :-(
I use another script to stop that horror at five disks:
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#!/bin/sh
while true; do
for i in `jot 5`; do
sudo fdisk -p ada$i > /dev/null 2>&1
done
sleep 5
done
-----
--
WBR, Boris Samorodov (bsam)
Research Engineer, http://www.ipt.ru Telephone & Internet SP
FreeBSD Committer, http://www.FreeBSD.org The Power To Serve
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