[CentOS] what is difference between "slow initialize" and "patrol read" on RAID?

mcclnx mcc mcclnx at yahoo.com.tw
Wed Jun 8 20:02:18 UTC 2011


Thank you for answer.   I know "media error" mean disk going to bad.  I want to know why "slow initialize" did NOT complain bad block.  Based on DELL document "slow initialize" will check bad block.



--- 11/6/8 (三),m.roth at 5-cent.us <m.roth at 5-cent.us> 寫道:

> 寄件者: m.roth at 5-cent.us <m.roth at 5-cent.us>
> 主旨: Re: [CentOS] what is difference between "slow initialize" and "patrol read" on RAID?
> 收件者: "CentOS mailing list" <centos at centos.org>
> 日期: 2011年6月8日,三,下午3:11
> mcclnx mcc wrote:
> > We have DELL server with MD1000 Disk array in
> it.  O.S. is CENTOS 5.5.
> > Recently every time MD1000 "patrol read" start I will
> get "media error"
> > messages on /var/log/message file.
> >
> > I use MD1000 "slow initialize" to initialize "bad
> disk" and NO error.
> > After "slow initialize" finish, I manually "startup
> patrol read".  I
> > continue get "media error" on /var/log/message.
> >
> > Anyone know what difference between "slow initialize"
> and "patrol read"?
> >
> No, but let me suggest to you that "media error" means just
> that, a bad
> drive.
> 
>        mark
> 
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