[dm-devel] DM-MP, Xen 5.0.0 and NetApp
Rodrigo Nascimento
nascimento.rp at gmail.com
Wed Apr 1 14:45:53 UTC 2009
multipath -ll output:
[root at CMPXEN02 ~]# multipath -ll
360a98000572d42774e6f4f2f682f6330dm-0 NETAPP,LUN
[size=20G][features=1 queue_if_no_path][hwhandler=0]
\_ round-robin 0 [prio=32][active]
\_ 0:0:0:0 sda 8:0 [active][ready]
\_ 0:0:1:0 sdb 8:16 [active][ready]
\_ 1:0:0:0 sdd 8:48 [active][ready]
\_ 1:0:1:0 sde 8:64 [active][ready]
\_ 2:0:0:0 sdh 8:112 [active][ready]
\_ 3:0:0:0 sdi 8:128 [active][ready]
\_ 3:0:1:0 sdj 8:144 [active][ready]
\_ 2:0:1:0 sdk 8:160 [active][ready]
\_ round-robin 0 [prio=7][enabled]
\_ 0:0:2:0 sdc 8:32 [active][ready]
\_ 1:0:2:0 sdf 8:80 [active][ready]
\_ 1:0:3:0 sdg 8:96 [active][ready]
\_ 3:0:2:0 sdl 8:176 [active][ready]
\_ 3:0:3:0 sdn 8:208 [active][ready]
\_ 0:0:3:0 sdo 8:224 [active][ready]
\_ 2:0:3:0 sdp 8:240 [active][ready]
\_ round-robin 0 [prio=0][enabled]
\_ 2:0:2:0 sdm 8:192 [failed][faulty]
On Wed, Apr 1, 2009 at 11:36 AM, Hannes Reinecke <hare at suse.de> wrote:
> Rodrigo Nascimento wrote:
>
>> Hi All,
>> I'm having problems to put the Multipathing tools to work correctly with
>> NetApp Cluster Solution.
>> I have a xenpool with 3 machines the multipathing are enabled on them,
>> the HBA are Qlogic, two FAS3140 controllers in Cluster. I created a lun to
>> be a storage repository (SR), the lun is visible and was recognized on the 3
>> machines, but when we say to the XenServer to build a SR with this Lun, all
>> I/O operations arrive to the FAS3140 by the non-optimized path.
>> *XenServer multipath.conf*
>> defaults {
>> user_friendly_names no
>> }
>> devices {
>> device {
>> vendor "NETAPP"
>> product "LUN"
>> path_grouping_policy group_by_prio
>> getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
>> prio_callout "/sbin/mpath_prio_netapp /dev/%n"
>> features "1 queue_if_no_path"
>> path_checker directio
>> failback immediate
>> }
>> }
>> We made two tests, one with prio_callout as /sbin/mpath_prio_alua and
>> other with prio_callout as /sbin/mpath_prio_netapp, both returns the same
>> results.
>>
>>
>
> What's the output of 'multipath -ll'?
> Looks like all paths are configured into one group here.
>
> Cheers,
>
> Hannes
> --
> Dr. Hannes Reinecke zSeries & Storage
> hare at suse.de +49 911 74053 688
> SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
> GF: Markus Rex, HRB 16746 (AG Nürnberg)
>
> --
> dm-devel mailing list
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>
--
Rodrigo Nascimento
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