[Lustre-discuss] filesystem corruption

Mag Gam magawake at gmail.com
Sun Sep 6 05:55:58 PDT 2009


So, I have to ask

Why disable write-back cache on the controller?



2009/9/4 恩强周 <eqzhou at gmail.com>:
> It's really dangerous! e2fsck  bring it back.
>
> 2009/9/3 Peter Kjellstrom <cap at nsc.liu.se>
>>
>> On Thursday 03 September 2009, 恩强周 wrote:
>> > hi all,
>> >
>> > I have lustre  corrupted when a OSS powered off by ipmi accidentally. I
>> > get
>> > followling messages after that OSS restart.
>> ...
>> > Our OSS server is running lustre-1.8.0,equipped with areca RAID adapter
>> > with write cache enabled.
>>
>> Drive write-back cache is dangerous, controller write-back cache is
>> dangerous
>> if you don't have a battery backup unit on the card. Which group are you
>> in?
>>
>> Either way the next step is probably fsck while keeping your fingers
>> crossed.
>>
>> /Peter
>>
>> > I have a worry about data on lustre  maybe lost.
>> > And waht's the cause of such a problem?How can I fixed it?
>> >
>> > Thanks in advance!
>>
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>
>
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