[CentOS] Lost mdadm.conf

Joseph L. Casale jcasale at activenetwerx.com
Thu Dec 31 16:23:52 UTC 2009


>I've collected an howto somewhere from the 'net:
>
>$ cat docs/sysadm/mdadm_recovery.txt
>
>## define possible devices with arrays
>echo 'DEVICE /dev/hd[a-l]* /dev/sd[a-l]*' > mdadm.conf
>
>## scan
>mdadm --examine --scan --config=mdadm.conf >> mdadm.conf
>
>## review configuration, copy to /etc
>cp mdadm.conf /etc/
>
>## create devices
>MAKEDEV md || { for ((i=0; i <= 31; i++)); do mknod /dev/md$i b 9 $i; done; }
>
>## start arrays
>mdadm --assemble --scan

That's a fairly limited script and out of date, I've never used mknod...

Simply:
# mdadm --detail --scan --verbose
And look it over, then:
# mdadm --detail --scan --verbose > /etc/mdadm.conf

And worry about mountpoints etc now...


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