[dm-devel] RH 4 and HSG80
Eric Ritchie
eritchie at interactivebrokers.com
Wed Aug 1 17:11:21 UTC 2007
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?
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
>>
>
>
> --
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> https://www.redhat.com/mailman/listinfo/dm-devel
>
>
--
Eric Ritchie
Interactive Brokers LLC
203-618-5868
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