One of the program managers here asked me a question that I couldn't answer:
with ext[34] over a RAID-[56] volume, what protection against data
corruption
and loss of existing data does the file system provide for the case of an
incomplete update of the RAID "stripe"?
I know that anyone with any usable brain cells has their data server on a
nice
UPS, but not all customers are so equipped, and he's concerned about
corruption
during a power failure (loss of unwritten data is OK).
I can't see any configuration options that would help but I could easily be
missing something. Any ideas?
Thanks,
Dan Taylor
Sr. Staff Engineer
WD Branded Products
On Sun, Oct 17, 2010 at 2:16 AM, Daniel Taylor <[email protected]> wrote:
> One of the program managers here asked me a question that I couldn't answer:
>
> with ext[34] over a RAID-[56] volume, what protection against data
> corruption
> and loss of existing data does the file system provide for the case of an
> incomplete update of the RAID "stripe"?
>
> I know that anyone with any usable brain cells has their data server on a
> nice
> UPS, but not all customers are so equipped, and he's concerned about
> corruption
> during a power failure (loss of unwritten data is OK).
>
> I can't see any configuration options that would help but I could easily be
> missing something. ?Any ideas?
>
I don't think you are missing something. check out this article:
http://lwn.net/Articles/349970/