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Re: Postgresql data integrity during RAID10 drive rebuild

From: Vivek Khera <vivek(at)khera(dot)org>
To: pgsql general <pgsql-general(at)postgresql(dot)org>
Subject: Re: Postgresql data integrity during RAID10 drive rebuild
Date: 2006-11-29 20:16:41
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-general
On Nov 29, 2006, at 2:39 PM, Scott Marlowe wrote:

>> Sounds good. According to LSI, the drive will take 8 hrs to rebuild a
>> 146GB disc (at a 30% rebuild rate), so doing this in the middle of  
>> the
>> day is not ideal.
> The rebuild time also tends to depend on how full the array is.  If
> you're only using 5% or so, it won't take the full 8 hours they're
> projecting.

But how does the RAID card know what is and what is not "full" in the  
unix file system stored on it? It has to rebuild the entire drive.

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