VINUM: Disk crash with striped raid

Greg 'groggy' Lehey grog at FreeBSD.org
Fri Oct 8 18:26:07 PDT 2004


On Friday,  8 October 2004 at 14:52:48 +0200, Paul Everlund wrote:
> Greg 'groggy' Lehey wrote:
>> On Thursday,  7 October 2004 at 18:11:52 +0200, Paul Everlund wrote:
>> Can you be more specific?
>
> My vinum.conf looks like this, if this is to be more specific:
>
>    drive ad5 device /dev/ad5s1e
>    drive ad6 device /dev/ad6s1e
>    volume raid0
>    plex org striped 127k
>    sd length 0 drive ad5
>    sd length 0 drive ad6

It's a *very* bad idea to name Vinum drives after their current
location.  You can take the (physical) drives out and put them
elsewhere, and Vinum will still find them.  The naming is then very
confusing.

>> If it only has a single plex, you're in trouble.
>
> Well, then I'm in trouble.
>
>> In that case, you need your recovery company to get an image of
>> the failed disk. Then you should put it on a similar disk, create
>> a configuration entry and perform some other incantations, and you
>> should be up and running again.
>
> Can you please be more specific? Is the configuration entry the one
> above, vinum.conf? Perform other incantations?

The easiest way is to recover the exact Vinum partition (drive) and
copy it as it is onto a new Vinum drive with the same name.  Then just
do a 'setstate up' on the plex and subdisks.

Greg
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