Re: [Nbd] Question About nbd-server and Raid

[Wouter Verhelst <w@...112...>]

On Sun, Feb 08, 2015 at 03:20:30PM -0800, Wayne E. Harlan wrote:
> I have been using nbd for almost a year to export a set of scripts I use 
> to two other linux boxes.  For most of that time the exported partition 
> was /dev/sdb3, as in this config:
> 
> # Network Block Device Export Config File
> [generic]
>      listenaddr = <my ip address>
>      allowlist = true
>      authfile = /etc/nbd-server/allow
> 
> [lfs]
>      exportname = /dev/sdb3
>      maxconnections=3
>      transactionlog = /var/log/nbd0
> 
> Recently I migrated the files on sdb3 to a mirrored raid partition, 
> /dev/md127p2.  The mirrored array was formed as whole disk and then the 
> array was partitioned.  No problem mounting the partition locally, but 
> when I changed the exportname as exportname = /dev/md127p2, nbd-server 
> would not export it.  It barfed, with a message about "no valid 
> exportnames".

Wut?

> Then, on a total whim, I made a link in /dev like:  ln -s md127p2 lfs, 
> and then using exportname = /dev/lfs somehow allowed the nbd-server to 
> export the mirrored partition.
> 
> Is it the characters in the name or the length of the name, or what ?

I have never seen that message, and have no clue where it's coming from.
Can you post the exact error message, and an example config file that
reproduces it?

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