[CentOS] Recover RAID

Jeff Sadino jsadino.queens at gmail.com
Sat Mar 6 04:22:09 UTC 2010


Thank you John.  The thing is my data was not overwritten, corrupted, etc.
Some was, but I know which parts.  Basically, I just cleared the file system
designation.  So if a file is 64K, does the first 32K on drive 1 contain the
first half of the file and the first 32K on drive 2 contain the second half,
or are the 32 size chunks on random locations?

Thanks,
Jeff

On Fri, Mar 5, 2010 at 6:18 PM, John R Pierce <pierce at hogranch.com> wrote:

> Jeff Sadino wrote:
> > I have access to all of the HEX data on each drive, and I now which
> > sector each stripe starts at.  Is there any way that I can reconstruct
> > my data from that?  When a file gets split up in RAID0, does the
> > controller use the same sectors on each stripe to write the file parts?
>
> if a raid0 has a stripe size of 32k, then every other 32k is written on
> one drive, and every other 32k is written on the next drive.
>
> if you lose one drive, then every other 32k of your file system is wiped
> out, gone, kaput.      its like taking a 12-gauge shotgun to your data
> and directory information.
>
>
>
>
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