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Re: [dm-devel] RH 4 and HSG80



On Wed, 2007-08-01 at 14:59 -0400, Eric Ritchie wrote:
> Chandra Seetharaman wrote:
> > 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.
> >   
> I only have _alua, _emc, _hds_modular and _netapp. None of these work.

sorry, I did not know what mpath_prio's were available in RHEL.

You can download the latest multipath tools tree from
http://git.kernel.org/?p=linux/storage/multipath-tools/.git;a=tree,
built the tools, copy only the _hp_sw or _tpc to /sbin and if it helps.

BTW, do note that doing this may invalidate your support contract with
your vendor (linux distributor). 
> 
> Thanks
> Eric
> >   
> >> 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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