[RE]Question about Fedora 6 with RAID 1

["James Olson" <big_spender12@xxxxxxxxx>]

Fedora Core 6 stores the device mapper information about the mirror inside the 'init' file which is located inside the initial ramdisk.  This creates a problem if your mirror fails because you have to boot from the fc6 media and type linux rescue.   Then you can manually activate dmraid, mount your volumes, and recreate the initial ramdisk  file using mkinitrd (not all that easy a task in text mode.  Also you have to manually mount the /proc and /sys filesystems as well or it won't update the device mapper info).

The recommended solution would be to replace the failed drive, use your raid bios to re-mirror it, and then it should work again.  If the drive is not the same as the original you may have to recreate the initial ramdisk again though and update /etc/fstab if the device names generated by dmraid have changed.






> ---------[ Received Mail Content ]----------
>
>  Subject : Question about Fedora 6 with RAID 1
>
>  Date : Wed, 30 May 2007 17:05:43 -0300
>
>  From : "Julian Magnone" <julianmagnone@xxxxxxxxx>
>
>  To : ataraid-list@xxxxxxxxxx
>
>
>
> We recently installed Fedora 6 in a E6400 Core 2 Duo processor with ASUS
>
> P5N-E SLI Motherboard, 4Gb RAM and 2x320Gb. HD.
>
> We've configured the BIOS to use the RAID 1 capabilities.
>
> After Fedora 6 was installed, the system crashed after reporting HDD read
>
> and write problems in one of the disks.
>
>
>
> We want to know if:
>
> 1) is this the expected behavior or the system should automatically recover
>
> from a failure on one of the disks?
>
> 2) exists any command to disconnect one of the disk from the array or this
>
> should be only by the BIOS configuration?

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