[CentOS] Re: SATA Raid 5 and losing a drive

Tue Apr 11 18:56:07 UTC 2006
Scott Silva <ssilva at sgvwater.com>

Chris Mauritz spake the following on 4/11/2006 11:24 AM:
> Joshua Baker-LePain wrote:
>> On Tue, 11 Apr 2006 at 7:07pm, Andy Green wrote
>>> Andy Green wrote:
>>>> Joshua Baker-LePain wrote:
>>>>> Did you try doing any I/O to the array?  In my limited experience
>>>>> with software RAID, it won't notice a drive missing until it tries
>>>>> to do something with said drive.
>>>> Yes I did do this, I copied a file to the mountpoint and did a sync.
>>>> Nothing.
>>> Hm Googling around suggests that everyone with SATA raid may be
>>> experiencing the same lack of warning that their safety net just blew
>>> a hole through the server farm roof in a bid to reach escape velocity.
>> And *that's* why I use 3ware...
> Same here.  Though I did use software RAID5 for a number of years back
> in the 96-2000 timeframe and never lost any data, even on very busy
> production mail servers.  But as I look back, I think I was just
> remarkably lucky.  8-)
> Cheers,
If it was on PATA hardware, the error code is pretty much refined. But libata
is not anywhere near this level of maturity.


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