> So, someone mentioned that Linux is all about "technical" issues, not what
> people want but purely on a 'this is good and this is bad technology' basis.
>
>
> OK, a possible "technical" problem is, I want to have 2 linux boxes(or more)
> connected to the same scsi disks. (twin tailed or what have you). I have
> running 2 instances of the same software both accessing those disks. For
> obvious reasons, load balancing, spread load of jobs, and failover, if a
> node
> fails, at least the other instance still has access to the disk and can
> RECOVER the data. Because my logfiles are also 'shared' so I can access the
> other node's logfiles and recover from that.
But you aren't talking to the disk directly. I'm currently doing
system administration on an IBM SP at Sprint. We've got around 1.5
terabytes of disk attached (I think. I'm a backup on this particular
box).
Oracle works with raw logical volumes, yes. But it's not talking to
the disks themselves. It's talking to the rvsd code, which talks to
the disks. (Actually, I'm trying to remember if the rvsd code talks to
the disk, or if it talks to the general AIX LVM stuff. Argh. My docs
are at work. I'll try to look it up tomorrow.)
The point is, you don't need raw IO. You need non-filesystem access,
which I think is a different point altogether.
Or does Oracle do something special for VSDs and RVSDs?
Shalon Wood
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