Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I have a RAID5 with 5 disks on my machine and suspect the motherboard chipset to fail at some points and make my raid going in degraded mode.

Last time it happened I noticed it on the failure of the 2nd drive connected to the same chipset and lost a lot of data. So I would like to prevent this, and especially I would like to have mdadm disable writes on the raid if one of the disk fails. So that in between I get notified, I recover and can use my system again. Sadly I could not find it in man mdadm so I was wondering if this is possible via a tool or hidden option since for me it looks like a standard feature of a RAID system.

If this is not possible I would also be happy with a solution to stop the raid if degraded.

share|improve this question

1 Answer 1

If you suspect a controller failure: replace the controller. Ignoring the problem won't make it go away.

share|improve this answer
    
I know, it's just for the time I will require to find the root cause (probably coming in a future post ^^), meanwhile I need it working. –  jolivier Oct 8 '12 at 21:52
    
this isn't an answer to the question at all, please attempt to answer what the OP has asked. –  AlanTuring Oct 9 '12 at 2:02
    
@AlanTuring If someone asks "How can I painlessly shoot myself in the foot" my advice will always be: "do not shoot yourself". I will NOT knowingly provide any kind of assistance that may cause disaster for the user. Do not try to work around faulty hardware. Period. –  Ansgar Wiechers Oct 9 '12 at 13:03
    
@AnsgarWiechers because you of course have a better overview of the user situation than himself and can better than himself judge the different solutions that he has in front of him to choose the correct one... Suppose I need the problem to reproduce itsel to have more information to decide what to replace (I just suspect until now) and I dont want to have to format my RAID5 each time this happen... –  jolivier Oct 9 '12 at 15:15

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.