Messages in this thread |  | | Date | Tue, 15 May 2001 16:55:08 -0700 | From | Jonathan Lundell <> | Subject | Re: LANANA: To Pending Device Number Registrants |
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At 4:35 PM -0700 2001-05-15, David Brownell wrote: >[ Re why "physical" device IDs _should_ have a critical role in sysadmin ] > >> I would have to agree that "stable" is critical to not driving people >> crazy. In the case of AIX, once a device is enumerated, it will retain >> the same name across reboots. Enough information is kept about each >> device to determine if it has already been enumerated (i.e. same I/O >> port address for serial devices, MAC address for ethernet cards, etc), >> or if it is a new device and should get a new name. > >I caught those refs to how AIX does this ... sounds worth learning from. >Does it handle USB "port addresses" (which bus and hub)?
Solaris has a scheme that addresses the issue at well. Device nodes live in /devices (/dev has soft links into /devices) and have system-global-geographic names. In Solaris talk, the 0-1-2 of eth0-1-2 i an instance. There's a file /etc/pathtoinst that records the connection of an device instance to its /devices geographical name.
It does keep naming stable, but can be a PITA at times when you're reconfiguring a system and *want* to renumber things. (There are magic ways to do it, though).
That's all Solaris 2.6; not sure about 2.8. -- /Jonathan Lundell. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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