Re: 2.6.36 io bring the system to its knees

[Alexey Dobriyan]

On Wed, Nov 10, 2010 at 5:59 PM, Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
> On Tue, Nov 9, 2010 at 5:32 PM, Dave Chinner <david@xxxxxxxxxxxxx> wrote:
>>
>> Don't forget to mention data=writeback is not the default because if
>> your system crashes or you lose power running in this mode it will
>> *CORRUPT YOUR FILESYSTEM* and you *WILL LOSE DATA*.
>
> You will lose data even with data=ordered. All the data that didn't
> get logged before the crash is lost anyway.

Linus, are you using with data=writeback?

Those of us, who did (without UPS), will never do it again.

Propability of non-trivial FS corruption becomes so much bigger.
I believe from my experience, average number of crashes before
one loses FS becomes single digit number.

With data=ordered, it's quite hard.
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