Adaptec RAID reconstruction
Posted on 2008-10-02
I have a Adaptec 2610sa configured with 750gb x4 in RAID 5. It has to have 2 logical devices (2tb limit) so it has dev1 (2tb) and dev2(50gb). (these are then in Linux LVM - gives me 2.1tb as one volume)
One drive failed ("drive 1), no problem so far, card automagically tried to rebuild with defect drive in place. It successfully rebuilt dev2, however on rebuild dev1, the computer switched off (i think i have a power supply issue).
On restart - card reports Dev1 as "FAILED" (reports Drive 0+1 as failed), and dev2 as "DEGRADED". (reports drive 1 as failed).
So I believe that the data is all intact, just inaccessible.
I've used Raid Recontructor (Runtime) with great success with a previous adaptec raid failure, however that RAID had only one logical device (not 2)
Has anyone any experience with extracting logical devices with raid recontructor?
THe optimal solution would be to have RR dump 2 image files - one 2tb, the other 50gb. I can then use losetup and vgscan to rebuild by LVM.
or will I be presented with one file, containing both devices.
What methods are available to extract the logical devices from this file?
Theoretically I could make an image of dev2 - its classed as degraded and therefore still accessible - but i don't really want to use it to on the current system - i'm not sure of its stability.