AW: AW: [dm-devel] multipathd failback

[Herr, Manuel]

I have no Problem with the failover also with SLES 9 2.6.5-7.244-smp.
But i'm not working with the isci initiator.

My Config:
defaults 
{
        multipath_tool  "/sbin/multipath -v0"
        udev_dir        /dev
        polling_interval 5
        default_selector        "round-robin 0"
        default_getuid_callout  "/sbin/scsi_id -g -u -s /block/%n"
        default_prio_callout    "/bin/true"
        failback        immediate
}
There are newer Multipath tools available:
Im working with: multipath-tools-0.4.5-0.20
(Device Mapper is same)
I recommend to update them first. :)

This one is talking about the same Problem you have.
http://www.querzone.de/wiki/Wiki.jsp?page=EMCClariion
I don't know if this error is clariion specific. 

Regards,
Manuel

> -----Ursprüngliche Nachricht-----
> Von: dm-devel-bounces at redhat.com 
> [mailto:dm-devel-bounces at redhat.com] Im Auftrag von Yonathan Cohen
> Gesendet: Mittwoch, 25. Oktober 2006 09:22
> An: device-mapper development
> Betreff: Re: AW: [dm-devel] multipathd failback
> 
> sorry but I am not sure what you mean.
> I am using an iscsi initiator (linux-iscsi rev 4.2) and this 
> is what the multipathd daemon sees pepper:~ # multipath -l
> dm names   N
> dm table 3600c0ff00000000007c1d167985b4b06  N dm table 
> 3600c0ff00000000007c1d167985b4b06  N dm status 
> 3600c0ff00000000007c1d167985b4b06  N dm info 
> 3600c0ff00000000007c1d167985b4b06  O
> 3600c0ff00000000007c1d167985b4b06
> [size=20 GB][features="0"][hwhandler="0"] \_ round-robin 0 
> [enabled]  \_ 14:0:0:0 sda 8:0  [failed]  \_ round-robin 0 [active]
>   \_ 14:1:0:0 sdb 8:16 [active]
> 
> sda and sdb are actually the same device discovered by iscsi 
> via 2 different paths.
> when sda failed multipathd identified the problem and 
> diverted traffic to sdb but after correcting the sda problem, 
> multipathd did not become aware of this and of course when i 
> failed sdb it did not failback to sda.
> i know that multipathd is suppose to poll for failed paths 
> and reinstate them when they become valid.
> but for some reason it does not.
> 
> 
> Herr, Manuel wrote:
> >
> > On which Hardware? (HBAs, SAN)?
> >
> > > -----Ursprüngliche Nachricht-----
> > > Von: dm-devel-bounces at redhat.com
> > > [mailto:dm-devel-bounces at redhat.com] Im Auftrag von Yonathan Cohen
> > > Gesendet: Mittwoch, 25. Oktober 2006 08:50
> > > An: dm-devel at redhat.com
> > > Betreff: [dm-devel] multipathd failback
> > >
> > > Hello.
> > > My "multipathd" daemon does not FailBack It does not check the 
> > > availability of a failed path and of course does not 
> reinstate it My 
> > > configuration is as follows:
> > > cat /etc/multipath.conf
> > >
> > > defaults {
> > >
> > >         failback        immediate
> > > }
> > > I am using the following packages:
> > > multipath-tools-0.4.5-0.11
> > > device-mapper-1.01.01-1.6
> > > I have them installed on a SUSE LINUX Enterprise Server 9
> > > (x86_64) sp-3 With kernel version: 2.6.5-7.244-smp Please help.
> > > Thanks.
> > >
> > > ____________________________________________________________
> > >
> > > Cohen Yonatan   |  +972-9-9718607 (o) 
> > >
> > > Software. Eng,  Storage group
> > >
> > > Voltaire - _The Grid Backbone_
> > >
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> >
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> 
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