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Re: [TEKNIK] fil system, robust overfor strømsvigt

Den Mon, 30 Apr 2007 13:18:42 +0200 skrev Kristian Nørgaard:
>> Ligegyldigt hvilket filsystem, vi taler om: Mht. strømudfald er det
>> uhyre vigtigt, at du har slået write-caching _fra_ på dine diske; ofte
>> er det slået til (fordi det øger performance).
> 
> Bios setting?

I Linux:
hdparm -W 0 /dev/SOMETHING

Jeg husker ikke, om man kan slå write caching fra for en given disk på 
permanent basis, eller om der skal køres en hdparm-kommando ved hver 
systemstart. For en sikkerheds skyld har jeg valgt det sidste på de 
servere, som jeg installeret (og som ikke havde sofistikeret hardware med 
batteri). Forskellige distributioner synes at have forskellige 
konventioner for, hvordan man på mest "civiliseret" vis specificerer 
hdparm kommandoer; der synes dog at være ved at opstå en konsensus om, at 
det sker i /etc/hdparm.conf (eller også har jeg misforstået noget).

-- 
Regards,
Troels Arvin <sslug@sslug>
http://troels.arvin.dk/

 
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