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Go Back   Linux Archive > Redhat > Device-mapper Development

 
 
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Old 04-27-2011, 10:39 AM
yue
 
Default what is the best configuration of NETAPP multipath

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@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*th e*Makefile*to*build*it.
>>*
>Thank*you,*applied.
>
>--*
>Christophe*Varoqui
>OpenSVC*-*Software*to*scale
>http://www.opensvc.com/
>
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