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.ม I need to do some snapmirrors to re-balance some disk space.ม The -k option to throttle the transfer doesn't seem to be having any effect.ม I've tried modifying the placement of the -k but it doesn't seem to matter.ม I also tried to modify it after it was running and it doesn't seem to help either.ม Here is the command I'm running:
snapmirror initialize -S sm15_3 -k 10000 new_sm15_3
If I'm understanding correctly, this should be allowing 10MB/s.
The source and destination are on the same file system.ม Here is a cut of a sysstat 3 after starting it:
มCPUมมมม NFSมมม CIFSมมม HTTPมมมม Netมม kB/sมมม Diskมม kB/sมมม Tapeมม kB/sม Cache
มมมมมมมมมมมมมมมมมมมมมมมมมมมมมมมมม inมมม outมมม readม writeมมม readม writeมมม age
73%มมมม 598มมมมมม 0มมมมมม 0มมม 2091 349080ม 338016มมม 271มมมมมม 0มมมมม 0มมมม 7
ม71%มมม 1019มมมมมม 0มมมมมม 0มมม 2046 319892ม 324019ม 13114มมมมมม 0มมมมม 0มมมม 0s
ม71%มมม 2800มมมมมม 0มมมมมม 0มมม 3880 330527ม 343528ม 17379มมมมมม 0มมมมม 0มมมม 7
ม69%มมม 1440มมมมมม 0มมมมมม 0มมม 3405 330279ม 392647ม 22343มมมมมม 0มมมมม 0มมมม 0s
ม87%มมม 1614มมมมมม 0มมมมมม 0มมม 2128 320151ม 607753 168553มมมมมม 0มมมมม 0มมมม 0s
ม87%มมมม 827มมมมมม 0มมมมมม 0มมม 5652 244701ม 584436 371689มมมมมม 0มมมมม 0มมมม 0s
ม91%มมมม 897มมมมมม 0มมมมมม 0มมม 4242 344072ม 680454 386373มมมมมม 0มมมมม 0มมมม 0s
As you can see, the disk read/write counts go way up.ม This is causing some noticeable latency in the nfs access for clients.ม 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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