[CentOS] software raid 1 failure

Fri Jan 27 02:32:56 UTC 2017
Valeri Galtsev <galtsev at kicp.uchicago.edu>

On Thu, January 26, 2017 7:27 pm, Jerry Geis wrote:
> Hi All,
> I had a machine with software RAID-1 have a disk crash. I am attempting to
> get the data off the good disk.

If only one of two drives of mirror failed, on the original machine you
should be able to mount everything hosted on that RAID (the last will be
running in degraded mode). Why not to copy it from there (using network,
or extra drives attached to that machine)?


> Using a USB to SATA device I plugged it
> into another machine. I tried many things to mount it, to mdadm add it but
> could not get it to cooperate.
> Another thought I had is can I use fdisk to change the "type" of the
> partition from "linux raid" to "linux" and then mount as normal?
> Does that work?
> Thanks,
> Jerry
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Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247