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Linux Software RAID – Failed to RUN_ARRAY /dev/md0 invalid argument Error and Solution

When I run the following command at shell prompt on Debian or Ubuntu Linux

mdadm -Ac partitions /dev/md0 -m dev

I'm getting the message/warning that read as follows:

Failed to RUN_ARRAY /dev/md0 invalid argument.

How do I fix this issue? How do I rebuild array again on Linux operating system using mdadm command?
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Howto rebuild Apache for Cpanel Linux / UNIX Server (Control Panel)

Q. I’d like to rebuild Apache web to include support for additional modules or to latest version. How do I rebuild Apache for Cpanel Server?

A. Building Apache is quite easy under Cpanel server.

Procedure to Rebuild Apache for Cpanel

Login as the root using ssh

Type the following commands:
# cd /scripts
# ./updatenow
# ./easyapache

Just follow on screen instructions to rebuild Apache for Cpanel server under Linux/FreeBSD oses. Please note that you should see a menu on screen asking you which options you would like built into your apache install. Select options as per your requirements. Once it has completed it will automatically restart Apache for you and you will then be able to use the new features.

Linux Recover From A Lost Software RAID device (Rebuild RAID 5 Software Array)

Q. How can I recover from a lost software RAID device in CentOS version 4 / Debian version 3 / Red Hat Enterprise Linux 3 or 4 server system under RAID 5 software configuration?
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