Re: RAID5 - 2nd drive died whilst waiting for RMA

[David Greaves <david@dgreaves.com>]

Dick Streefland wrote:

>David Greaves <david@dgreaves.com> wrote:
>| so, the plan in order to try and extract data:
>| * insert new drive as /dev/sdd1
>| * dd if=/dev/sda1 of=/dev/sdd1
>| * mdadm /dev/md0 --remove /dev/sda1
>| * physically swap /dev/sda and /dev/sdd so /dev/sdd
>| * mdadm /dev/md0 --add /dev/sda1
>| * fsck filesystem and expect to lose files where there were bad blocks
>| * wait for new drive (special delivery - tomorrow morning)
>| * insert new drive as /dev/sdd
>| * mdadm /dev/md0 --add /dev/sdd1
>
>You might want to check out "ddrescue", which is a version of "dd"
>that is designed to read from a disk with bad sectors.
>  
>
That was it - thanks :)

I was googling 'dd recover' and various 'badblocks' etc... not 'dd rescue'

Also found dd_rhelp which looks sensible.

fingers crossed that it works...

David