jlundell@pobox.com (Jonathan Lundell) wrote on 15.05.01 in <p05100316b7272cdfd50c@[207.213.214.37]>:
> What about:
>
> 1 (network domain). I have two network interfaces that I connect to
> two different network segments, eth0 & eth1; they're ifconfig'd to
> the appropriate IP and MAC addresses. I really do need to know
> physically which (physical) hole to plug my eth0 cable into.
Sorry, the software doesn't know that. Never has, for that matter.
> (Extension: same situation, but it's a firewall and I've got 12 ports
> to connect.) (Extension #2: if I add a NIC to the system and reboot,
> I'd really prefer that the NICs already in use didn't get renumbered.)
Make your config script look at the hardware MAC addresses. Those don't
change.
> 2 (disk domain). I have multiple spindles on multiple SCSI adapters.
> I want to allocate them to more than one RAID0/1/5 set, with the
> usual considerations of putting mirrors on different adapters,
> spreading my RAID5 drives optimally, ditto stripes. I need (eg) SCSI
> paths to config all this, and I further need real physical locations
> to identify failed drives that need to be hot-replaced. The mirror
> members will move around as drives are replaced and hot spares come
> into play.
Use partition UUIDs, or SCSI serial numbers, or whatever. This works
today.
> Seems like more that merely informational.
The *location*? Nope. Some unique id for the device, if available at all:
sure.
> (A side observation: PCI or SCSI bus/device/lun/etc paths are not
> physical locations; you also need external hardware-specific
> knowledge to be able to talk about real physical locations in a way
> that does the system operator any good.)
And those you typically do not have.
MfG Kai
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This archive was generated by hypermail 2b29 : Wed May 23 2001 - 21:00:25 EST