Re: Fwd: manually destriping a 4 drive raid5 with one missing drive

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dd from mdX doesn't work i tried it even with testdisk, what you get
is mixed up data, incomplete files.

{ Google mail on iPad doesn't support plain text, who knew :/ }

On Fri, Oct 23, 2015 at 7:49 PM, Phil Turmel <philip@xxxxxxxxxx> wrote:
> On 10/23/2015 12:20 PM, Marek wrote:
>> Not sure if it's destrip or destripe but it's basically like puzzle
>> you take a block from each drive according to the layout you are using
>> e.g. Left symmetric and then write it down in that order computing
>> missing blocks from parity blocks - this way you would write an image
>> which you can mount without using mdadm. Data restoration companies
>> are using this technique.
>
> No special tool required.  Obtain a new drive big enough to hold your
> entire array and 'dd' from /dev/mdX to your new drive.
>
> { BTW: convention on kernel.org is to reply-to-all, trim unnecessary
> context, and either bottom post or interleave your reply. }
>
> Phil
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