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Re: [dm-devel] RH 4 and HSG80



On Wed, 2007-08-01 at 13:11 -0400, Eric Ritchie wrote:
> Thanks for the help. Unfortunately, I don't have /sbin/mpath_prio_hp_sw. 
> I have other mpath_prio files but not the hp one. I guess that means I 
> need a newer version of multipath-tools. How can I upgrade to the latest 
> version?

Try out different mpath_prio's (especially the _tpc one). One of them
_might_ work.

> 
> Eric
> 
> Stefan Bader wrote:
> > I have no access to HSGs but maybe this generic statements (plus some 
> > wisdom from hwtable.c) helps:
> >
> > First, you are actually forcing multipath-tools to use all paths by 
> > stating "multibus" in you multipath section.
> > Everything you put there will replace the defaults and the device 
> > sections. Just be minimalistic there. In the
> > latest multipath-tools code there actually is a configuration for 
> > "DEC"/"HSG80". From this, does the following
> > multipath-conf help you?
> >
> > defaults {
> >         rr_min_io                       64
> >         user_friendly_names     yes
> > }
> >
> > multipaths {
> >         multipath {
> >                 wwid    360001fe1000d85f000039341397602d2
> >                 alias   disk1
> >         }
> >         multipath {
> >                 wwid    360001fe1000d85f0000393413976024b
> >                 alias   disk2
> >         }
> > }
> >
> > devices {
> >         device {
> >                 vendor                  "DEC"
> >                 product                 "HSG80"
> >                 path_grouping_policy    group_by_prio
> >                 prio_callout            "/sbin/mpath_prio_hp_sw /dev/%n"
> >                 hardware_handler                "1 hp_sw"
> >                 path_checker            hp_sw
> >                 no_path_retry           5
> >         }
> >         device {
> >                 vendor                  "DEC"
> >                 product                 "HSG80    (C) DEC"
> >                 path_grouping_policy    group_by_prio
> >                 prio_callout            "/sbin/mpath_prio_hp_sw /dev/%n"
> >                 hardware_handler                "1 hp_sw"
> >                 path_checker            hp_sw
> >                 no_path_retry           5
> >         }
> > }
> >
> >
> > Mit freundlichem Gruß / Regards,
> > Stefan Bader
> >
> > SW Linux on zSeries Development
> > Stefan Bader de ibm com
> >
> > IBM Deutschland Entwicklung GmbH
> > Vorsitzender des Aufsichtsrats: Martin Jetter
> > Geschäftsführung: Herbert Kircher
> > Sitz der Gesellschaft: Böblingen
> > Registergericht: Amtsgericht Stuttgart, HRB 243294
> > ----------------------------------------------------------------------------------
> >   When all other means of communication fail, try words.
> >
> > dm-devel-bounces redhat com wrote on 01.08.2007 16:53:55:
> >
> >   
> >> I trying to setup multipathing with HSG80s on a Redhat 4 update 5 host. 
> >> I have it mostly working, the problem I'm having is that the 2 disks 
> >> I've created on the HSGs only go through one controller. I set the 
> >> preferred path for each disk to use a different controller but dm always 
> >>     
> >
> >   
> >> sets them to go through just one. I also can't find a way to move a disk 
> >>     
> >
> >   
> >> to the other controller, I thought multipathd -k switch would work but 
> >> it doesn't. Does anyone have RedHat4 and HSG80s working properly with 
> >> multipathing? Here is my multipath.conf file and multipath -ll output:
> >>
> >> defaults {
> >>         user_friendly_names yes
> >> }
> >>
> >> defaults {
> >>         udev_dir                /dev
> >>         polling_interval        10
> >>         selector                "round-robin 0"
> >>         path_grouping_policy    multibus
> >>         getuid_callout          "/sbin/scsi_id -g -u -s /block/%n"
> >>         prio_callout            /bin/true
> >>         path_checker            readsector0
> >>         rr_min_io               100
> >>         rr_weight               priorities
> >>         failback                immediate
> >>         no_path_retry           fail
> >>         user_friendly_name      yes
> >>         features                "1 queue_if_no_path"
> >> }
> >> devnode_blacklist {
> >>         devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
> >>         devnode "^hd[a-z]"
> >>         devnode "^cciss!c[0-9]d[0-9]*"
> >> }
> >>
> >> multipaths {
> >>         multipath {
> >>                 wwid 360001fe1000d85f000039341397602d2
> >>                 alias                   disk1
> >>                 path_grouping_policy    multibus
> >>                 path_checker            readsector0
> >>                 path_selector           "round-robin 0"
> >>                 failback                manual
> >>                 rr_weight               priorities
> >>                 no_path_retry           5
> >>         }
> >>         multipath {
> >>                 wwid 360001fe1000d85f0000393413976024b
> >>                 alias                   disk2
> >>                 path_grouping_policy    multibus
> >>                 path_checker            readsector0
> >>                 path_selector           "round-robin 0"
> >>                 failback                manual
> >>                 rr_weight               priorities
> >>                 no_path_retry           5
> >>         }
> >> }
> >> devices {
> >>         device {
> >>                 vendor                  DEC
> >>                 product                 HSG80
> >>                 path_grouping_policy    group_by_serial
> >>                 getuid_callout          "/sbin/scsi_id -g -u -s 
> >>     
> > /block/%n"
> >   
> >>                 path_checker            hp_sw
> >>                 features                "1 queue_if_no_path"
> >>         }
> >>         device {
> >>                 vendor                  DEC
> >>                 product                 "HSG80    (C) DEC"
> >>                 path_grouping_policy    group_by_serial
> >>                 getuid_callout          "/sbin/scsi_id -g -u -s 
> >>     
> > /block/%n"
> >   
> >>                 path_checker            hp_sw
> >>                 features                "1 queue_if_no_path"
> >>         }
> >> }
> >>
> >> [root lin380g5-ib etc]# multipath -ll
> >> disk2 (360001fe1000d85f0000393413976024b)
> >> [size=339 GB][features="1 queue_if_no_path"][hwhandler="0"]
> >> \_ round-robin 0 [active]
> >>  \_ 0:0:4:11 sdb 8:16  [active][ready]
> >>  \_ 0:0:5:11 sdd 8:48  [active][ghost]
> >>  \_ 1:0:4:11 sdf 8:80  [active][ready]
> >>  \_ 1:0:5:11 sdh 8:112 [active][ghost]
> >>
> >> disk1 (360001fe1000d85f000039341397602d2)
> >> [size=67 GB][features="1 queue_if_no_path"][hwhandler="0"]
> >> \_ round-robin 0 [active]
> >>  \_ 0:0:4:20 sda 8:0   [active][ready]
> >>  \_ 0:0:5:20 sdc 8:32  [active][ghost]
> >>  \_ 1:0:4:20 sde 8:64  [active][ready]
> >>  \_ 1:0:5:20 sdg 8:96  [active][ghost]
> >>
> >>
> >> Thanks
> >>
> >> -- 
> >> Eric Ritchie
> >> Interactive Brokers LLC
> >>
> >>
> >> --
> >> dm-devel mailing list
> >> dm-devel redhat com
> >> https://www.redhat.com/mailman/listinfo/dm-devel
> >>     
> >
> >
> > --
> > dm-devel mailing list
> > dm-devel redhat com
> > https://www.redhat.com/mailman/listinfo/dm-devel
> >
> >   
> 
> 
-- 

----------------------------------------------------------------------
    Chandra Seetharaman               | Be careful what you choose....
              - sekharan us ibm com   |      .......you may get it.
----------------------------------------------------------------------



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