[ENBD] enbd 2.4.31 RAID 1 documentation

[Pete Black]

Hi there,

I just found enbd, and it seems like it could be a very useful tool to 
implement parts of my company's disaster recovery plans.

I have built the package, make test completes successfully, and I am 
able to mount 'single' enbd volumes across the network.

However, I am confused by the documentation that comes with enbd, does 
the 'serverA +serverB' syntax work for creating RAID-1 mirrors, as I 
have been unsuccessful in making this work.

I have also read indications on this list that the RAID-1 stuff has been 
stripped out and put into a different module - fr.o?

Sorry if this is a pain in the ass, but what is the simplest way for me 
to set up enbd mirroring, assuming the following

192.168.50.100 is 'exporting' a block device e.g. enbd-server -i 'foo' 
1666 /tmp/testVolume

192.168.50.101 is 'exporting' a block device e.g. enbd-server -i 'bar' 
2666 /tmp/testVolume

currently i try and RAID-1 these 2 by using the folloowing commands, on 
192.168.50.104:

enbd-client 192.168.50.100:1666 -n 3 +192.168.50.101:2666 -n3 /dev/nda

This definitely does something, but it seems like only 192.168.50.101's 
'export' gets mounted,  and no RAID-1 is in place.

I also get confusing messages indicating enbd is tryign to look up 
'+192.168.50.101' instead of treating the '+' as a modifier.

also, when i send commands to proc/nbdinfo, i get errors  e.g.

echo 'setfaulty[b]=1' > /proc/nbdinfo

my /var/log/messages file contains 'illegal 15-character command' or 
similar.

Is there an up-to-date HOWTO or other docs on how to get the built-in 
RAID-1 working with enbd?

Thanks for your time and a neat tool,

Pete