[dm-devel] qlogic failover

[Duane Grigsby]

Actually, it works both ways. For a vendor+model match, we will issue the notify specified in the devtbl (i.e. FO_NOTIFY_TYPE_SPINUP) or if a global notify is specified we will issue it for any device when a failover occurs, so it does allow you to mix arrays as long as you don't specify the global notify parameter. 

Duane

> -----Original Message-----
> From: dm-devel-bounces at redhat.com 
> [mailto:dm-devel-bounces at redhat.com]On
> Behalf Of Patrick Mansfield
> Sent: Tuesday, June 15, 2004 11:09 AM
> To: device-mapper development
> Cc: Andrew Vasquez
> Subject: Re: [dm-devel] qlogic failover
> 
> 
> On Mon, Jun 14, 2004 at 01:42:59PM -0500, Guilherme Barros wrote:
> > is the qlogic failover setup in their driver aware of 
> having to start 
> > controllers showing ghost paths if the master one fails?
> 
> > let me try that one again. say controller A is showing actual paths 
> > (sda, sdc), and controller B is showing ghost paths (sdb, sdd). say 
> > controller A dies... does the qlogic driver with failover 
> know that it 
> > needs to activate controller B ?
> 
> Is these the COMPAQ HSV and MSA devices that need the spinup?
> 
> The qlogic driver conditionally sends a spinup for the
> FO_NOTIFY_TYPE_SPINUP. AFAICT it is all or nothing since it 
> is based on
> the global variable qla_fo_params.FailoverNotifyType, so mixing arrays
> where some require spinup and some don't could break it.
> 
> # grep FO_NOTIFY_TYPE_SPINUP *.[hc]
> qla_cfg.c:      } else if (qla_fo_params.FailoverNotifyType ==
> FO_NOTIFY_TYPE_SPINUP ||
> qla_cfg.c:                      old_lp->fcport->notify_type ==
> FO_NOTIFY_TYPE_SPINUP ){
> qla_devtbl.h:   {"COMPAQ", "MSA1000", 2, FO_NOTIFY_TYPE_SPINUP, 
> qla_devtbl.h:   {"COMPAQ", "HSV110 (C)COMPAQ", 4, 
> FO_NOTIFY_TYPE_SPINUP,   
> qla_devtbl.h:   {"HP", "HSV100", 4, FO_NOTIFY_TYPE_SPINUP,   
> qla_fo.c:       if (qla_fo_params.FailoverNotifyType ==
> FO_NOTIFY_TYPE_SPINUP ||
> qla_fo.c:               new_lp->fcport->notify_type ==
> FO_NOTIFY_TYPE_SPINUP ) {
> qlfo.h:#define FO_NOTIFY_TYPE_SPINUP                  5
> qlfo.h:#define FO_NOTIFY_TYPE_DEF                FO_NOTIFY_TYPE_SPINUP
> qlfolimits.h:#define FO_NOTIFY_TYPE_SPINUP                    5
> 
> -- Patrick Mansfield
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