[dm-devel] RH 4 and HSG80
Eric Ritchie
eritchie at interactivebrokers.com
Wed Aug 1 18:59:48 UTC 2007
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.
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 at 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 at 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 at 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 at redhat.com
>>>> https://www.redhat.com/mailman/listinfo/dm-devel
>>>>
>>>>
>>> --
>>> dm-devel mailing list
>>> dm-devel at redhat.com
>>> https://www.redhat.com/mailman/listinfo/dm-devel
>>>
>>>
>>>
>>
--
Eric Ritchie
Interactive Brokers LLC
203-618-5868
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