[Pacemaker] Immediate fs errors on iscsi connection problem

Vladislav Bogdanov bubble at hoster-ok.com
Tue Apr 5 13:16:13 EDT 2011


05.04.2011 18:24, ruslan usifov wrote:
> GREAT THANKS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> 
> It's work. 

Good. That RA may be not perfect, at least I saw some minor errors from it.

> But i have some little question, how can i got same effect on
> windows? Windows ISCSI initiator (win 2008 server) breaks connections
> and newer it restarts??

Can't say anything about its timeouts. Connection reestablishment (with
iptables hack on server side) worked for me. It would be great if you
share your findings.

> 
> 4 апреля 2011 г. 8:24 пользователь Vladislav Bogdanov
> <bubble at hoster-ok.com <mailto:bubble at hoster-ok.com>> написал:
> 
>     Hi,
> 
>     03.04.2011 22:42, ruslan usifov wrote:
>     >     You need some tuning from both sides.
>     >     First, (at least some versions of) ietd needs to be blocked
>     (-j DROP)
>     >     with iptables on restarts. That means, you should block all
>     incoming and
>     >     outgoing packets (later is more important) before ietd stop
>     and unblock
>     >     all after it starts. I use home-brew stateful RA for this,
>     which blocks
>     >     (DROP) all traffic to/from VIP in slave mode and passes it to
>     a later
>     >     decision (no -j) in master mode.
>     >
>     >
>     >
>     > Thanks for reply, But how to implemet this from pacemaker. Or i
>     must to
>     > modify inet.d scripts?
> 
>     You can try attached.
>     This was a first trial to write RA... It may contain some wrong logic,
>     especially with scores, but it works for me.
>     It is intended to be colocated with IP-address resource:
>     colocation col1 inf: FW:Master ip
>     order ord1 inf: ip:start FW:promote
> 
>     Vladislav
> 
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> 
> 
> 
> 
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