[dm-devel] what is the best configuration of NETAPP multipath

[yue]

i have deploy multipath on netapp DATA ontap,but there is no improvment on throughput.
-------------------------
if=/dev/zero of=fc-lv bs=4K count=1M     about  270~280M/s (netapp lun with multipath)
dd if=/dev/zero of=fc-lv bs=4K count=2M  about 150M/s (netapp lun with multipath)
 hdparm -t /dev/sda 380.40 MB/sec (local disk)
hdparm -t /dev/sdb 131.24 MB/sec(netapp lun with multipath)
-----------------------
that is the conf
 device {
               vendor                  "NETAPP"
               product                 "LUN.*"
               getuid_callout          "/lib/udev/scsi_id --whitelisted --device=/dev/%n"
               features                "1 queue_if_no_path"
               hardware_handler        "0"
               path_selector           "round-robin 0"
               path_grouping_policy    multibus
               failback                immediate
               rr_weight               uniform
               rr_min_io               128
               path_checker            directio
               prio                    netapp
       }





At 2011-04-27 14:49:57，"Christophe Varoqui" <christophe.varoqui at gmail.com> wrote:

>On mar., 2011-04-26 at 22:23 -0500, Benjamin Marzinski wrote:
>> This is the second part of the NetApp patch from George Martin. It simply
>> renames netapp.c to ontap.c and edits the Makefile to build it.
>> 
>Thank you, applied.
>
>-- 
>Christophe Varoqui
>OpenSVC - Software to scale
>http://www.opensvc.com/
>
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>dm-devel mailing list
>dm-devel at redhat.com
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