Just some quick thoughts in a hurry...
Talking about minor numbers is naturally confusing with the aoe driver, because
there are at least two kinds:
* The AoE address is comprised of a {major, minor} pair, often called
shelf.slot. "AoE minor number"
* The Linux system has special block device files with major and minor
numbers. "system minor number"
For dynamic system minor numbers, which is the default (but see `cat
/sys/module/aoe/parameters/aoe_dyndevs` to verify), there is a bitmap of
available system minor numbers. There are over 64000 of them, but you could
run out if you have AoE targets coming and going and you don't do aoe-flush.
If you're doing static system minor numbers, though, you'd expect higher AoE
minor numbers to be a problem.
On Mar 28, 2014, at 3:14 PM, James R. Leu <j...@inoc.com> wrote:
> Hello,
>
> I'm using AOEv83 on my client machines and vbladev20 on my AOE Server.
> Occasionally when I start a new vblade on the server, the client will
> see the new aoe device, but attempts to mount it result in
> mount returning 'unknown device'. If I relaunch vblade with different
> shelf/slot numbers it will mount fine.
>
> After unloading/reloading the aoe module on the client I am able to
> use the original shelf/slot numbers without a problem.
>
> In the situation where it fails the minor number is really high.
> ex 152.3584
>
> when I use different shelf slot numbers, the minor number
> looks like I would expect
> ex 152.290
>
> Has anyone else seen this?
> Is there a limit to he minor number that aoe uses?
>
> Thank you for your time.
>
> --
> James R. Leu | Systems and Development | INOC | Madison, WI, USA
> Service. Not Software.®
>
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