Re: Postgresql data integrity during RAID10 drive rebuild - Mailing list pgsql-general

From Vivek Khera
Subject Re: Postgresql data integrity during RAID10 drive rebuild
Date
Msg-id 712021D9-6D5E-4F38-B21E-D850B125C543@khera.org
Whole thread Raw
In response to Re: Postgresql data integrity during RAID10 drive rebuild  (Scott Marlowe <smarlowe@g2switchworks.com>)
Responses Re: Postgresql data integrity during RAID10 drive rebuild
List 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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