On Aug 11, 2013, at 8:39 AM, ppcner8x8x <[email protected]> wrote:

> What is the recommended behaviour of distro network scripts with the 
> root-on-iscsi interface?
> 

If sessions are logged in then when iscsid is started from the init 
scripts/systemd the network interfaces that iscsi uses must be up.


> My CentOS root-on-iscsi systems seems to configure all network interfaces 
> like a regular disk installation
> (controlled by /etc/sysconfig/network-scripts/ifcfg-ethX). This always seems 
> to cause a hiccup in init scripts:
> 
>  connection1:0: ping timeout of 5 secs expired, recv timeout 5, last rx 
> 4294682021, last ping 4294687024, now 4294692032
>  connection1:0: detected conn error (1011)
>  connection2:0: detected conn error (1020)
>  connection3:0: detected conn error (1020)
> 

What version of Centos is this and did you setup root on iscsi using their 
install to iscsi option in the installer? When using the RHEL 6 iscsi root 
install path I did not hit that problem in the past. I assume Centos did not 
change any of the iscsi startup stuff.


> 
> Won't this behaviour break the root disk session? Or is it supposed to be 
> tolerable: if the network scripts do the right thing
> there will be a route to a portal and the session will be reestablished?

As long as iscsid is up and the network eventually comes back up the session 
will be reestablished.


> 
> Fedora 19 does something even more drastic: if rewrites the network 
> configuration with stuff obtained from the initramfs boot;
> this safe behaviour practically guarantees that the network configuration 
> will be compatible with that in the initramfs so finding 
> the target should be a no-brainer; nevertheless the interfaces are brought up 
> again (redundantly?).
> 
> 
> 
> 
> 
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