I am not sure, but you may want to change your syntax to put the -k before the -S; Not sure if that really matters, but this is what I found in one of the docs..
Good luck.
snapmirror update [-k n] -S source_system:source_volume
[dest_system:]dest_volume
Date: Wed, 31 Jul 2013 19:54:46 -0600
Subject: Snapmirror throttle not working
From: jeff.cleverley@avagotech.com
To: Toasters@teaparty.net
Greetings,
I'm running 8.1.2P4, 7-mode on some 6290s.à I need to do some snapmirrors to re-balance some disk space.à The -k option to throttle the transfer doesn't seem to be having any effect.à I've tried modifying the placement of the -k but it doesn't seem to matter.à I also tried to modify it after it was running and it doesn't seem to help either.à Here is the command I'm running:The source and destination are on the same file system.à Here is a cut of a sysstat 3 after starting it:
snapmirror initialize -S sm15_3 -k 10000 new_sm15_3
If I'm understanding correctly, this should be allowing 10MB/s.
àCPUàààà NFSààà CIFSààà HTTPàààà Netàà kB/sààà Diskàà kB/sààà Tapeàà kB/sà Cache
ààààààààààààààààààààààààààààààààà inààà outààà readà writeààà readà writeààà age
73%àààà 598àààààà 0àààààà 0ààà 2091 349080à 338016ààà 271àààààà 0ààààà 0àààà 7
à71%ààà 1019àààààà 0àààààà 0ààà 2046 319892à 324019à 13114àààààà 0ààààà 0àààà 0s
à71%ààà 2800àààààà 0àààààà 0ààà 3880 330527à 343528à 17379àààààà 0ààààà 0àààà 7
à69%ààà 1440àààààà 0àààààà 0ààà 3405 330279à 392647à 22343àààààà 0ààààà 0àààà 0s
à87%ààà 1614àààààà 0àààààà 0ààà 2128 320151à 607753 168553àààààà 0ààààà 0àààà 0s
à87%àààà 827àààààà 0àààààà 0ààà 5652 244701à 584436 371689àààààà 0ààààà 0àààà 0s
à91%àààà 897àààààà 0àààààà 0ààà 4242 344072à 680454 386373àààààà 0ààààà 0àààà 0s
As you can see, the disk read/write counts go way up.à This is causing some noticeable latency in the nfs access for clients.à While I really like the new hardware can pump data around, I need to be able to control it.
What am I doing wrong?
Thanks,
Jeff
--
Jeff Cleverley
Unix Systems Administrator
4380 Ziegler Road
Fort Collins, Colorado 80525
970-288-4611
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