On Thu, Aug 11, 2016 at 6:19 AM, John Dawson <linux@xxxxxxxxxxxxxxx> wrote: > I have a machine which had a drive with RHEL 6.X installed with a raid > device setup on separate disk(s). Installed a new hard disk in machine and > installed CentOS 7. CentOS 7 wouldn't mount the raid. Put the old drive > back in and now RHEL 6.X won't mount the raid. Is the raid permanently > hosed? Can I get the data on it back? How? Thx. RHEL comes with a support contract so you should contact Red Hat about that part. Also, not anywhere near enough information has been provided, almost like you think what you're experiencing is a widely known problem with a known solution. But it isn't. So you should provide mdadm -E information for each member block device, whether or not the array assembles manually, if not what error do you get in user and kernel space, and what command you're using to mount the array that you say fails, and what the error message is. Also include mdadm version on both systems because few people will have any idea what mdadm version is on the particular installation of RHEL and CentOS you're using, as these things aren't standardized at all across distros. -- Chris Murphy -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
