root on gmirror and disk failure...
m.seaman at infracaninophile.co.uk
Sun Sep 2 01:05:28 PDT 2007
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> The provider, /dev/mirror/gm0, is not being created. This is
> significant for obvious reasons: no mirror means no provider which
> means no root. The module /boot/kernel/geom_mirror.ko is loaded, as I
> have manually loaded it via the loader(8) prompt and attempted the
> simulated failure again with identical results. It's the provider that
> isn't being created, for whatever reason.
> Suggestions? (Other than purchasing a hardware RAID card).
I've seen these symptoms before. It appears to be a "feature" of
certain Motherboards. If you're lucky there will be some BIOS
options you can toggle to make it behave better -- usually to do
will telling the motherboard *not* to do any sort of RAID stuff itself.
Otherwise, look for BIOS updates, or switch to a different
Motherboard. Systems supplied with hot swap drives (meaning SATA
rather than IDE) tend to work better. Or install a hardware RAID
I've also a feeling that there's a behavioural difference between
'only one drive present' and 'one working drive and a blank disk'
but haven't really tested that theory out, as we solved the original
problem by other means.
Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
Kent, CT11 9PW
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