dmraid for administering fakeraids
fakeraid is used when you have a wannabe-hardware-raidcontroller that still needs load of software to do its raid !!
| command | description |
|---|---|
| dmraid -l | list all supported raidcontrollers |
| dmraid -r | list all existing raids and get the /dev of your raid(s) |
| dmraid -ay | activate all existing raids |
| dmraid -an | deactivate all existing raids that are not mounted/busy |
| dmraid -rE | erase metadata on all raids. Note that you have to deactivate first and maybe run this a few times. And you’ll loose all your data of course. But on my board this effectively freed the disks from the bios-raid-controller-bonds and after a reboot the disks were accessible again as non-raid single disks |
Note that these fakeraids dont get a short devicename like sda or md0 or something. When running dmraid you get the “long-name” like isw_cihbfgdiag and can access the devices under /dev/mapper/longname.
example:
fdisk -l /dev/mapper/isw_cihbfgdiag_guest
For further reference including how to boot from such a raiddevice with ubuntu see:
knowwiki/basics/dmraid_basics.txt · Last modified: 2008/06/18 23:58 by peter