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.а I need to do some snapmirrors to re-balance some disk space.а The -k option to throttle the transfer doesn't seem to be having any effect.а I've tried modifying the placement of the -k but it doesn't seem to matter.а I also tried to modify it after it was running and it doesn't seem to help either.а 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.а Here is a cut of a sysstat 3 after starting it:
аCPUаааа NFSааа CIFSааа HTTPаааа Netаа kB/sааа Diskаа kB/sааа Tapeаа kB/sа Cache ааааааааааааааааааааааааааааааааа inааа outааа readа writeааа readа writeааа age
73%аааа 598аааааа 0аааааа 0ааа 2091 349080а 338016ааа 271аааааа 0ааааа 0аааа 7
а71%ааа 1019аааааа 0аааааа 0ааа 2046 319892а 324019а 13114аааааа 0ааааа 0аааа 0s а71%ааа 2800аааааа 0аааааа 0ааа 3880 330527а 343528а 17379аааааа 0ааааа 0аааа 7 а69%ааа 1440аааааа 0аааааа 0ааа 3405 330279а 392647а 22343аааааа 0ааааа 0аааа 0s
а87%ааа 1614аааааа 0аааааа 0ааа 2128 320151а 607753 168553аааааа 0ааааа 0аааа 0s а87%аааа 827аааааа 0аааааа 0ааа 5652 244701а 584436 371689аааааа 0ааааа 0аааа 0s а91%аааа 897аааааа 0аааааа 0ааа 4242 344072а 680454 386373аааааа 0ааааа 0аааа 0s
As you can see, the disk read/write counts go way up.а This is causing some noticeable latency in the nfs access for clients.а 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