mmapplypolicy ... -N nodeClass ... will use the nodes in nodeClass as helper nodes to get its work done.
mmdsh -N nodeClass command ... will run the SAME command on each of the nodes -- probably not what you want to do with mmapplypolicy. To see more about what mmapplypolicy is doing use options -d 1 (debug info) If you are using -N because you have a lot of files to process, you should also use -g /some-gpfs-temp-directory (see doc) If you are running a small test case, it may happen that you don't see the helper nodes doing anything, because there's not enough time and work to get them going... For test purposes you can coax the helper nodes into action with: options -B 1 -m 1 so that each helper node only does one file at a time. From: "Chase, Peter" <peter.ch...@metoffice.gov.uk> To: "'gpfsug-discuss@spectrumscale.org'" <gpfsug-discuss@spectrumscale.org> Date: 11/10/2017 11:18 AM Subject: [gpfsug-discuss] Specifying nodes in commands Sent by: gpfsug-discuss-boun...@spectrumscale.org Hello all, I'm running a script triggered from an ILM external list rule. The script has the following command in, and it isn't work as I'd expect: /usr/lpp/mmfs/bin/mmapplypolicy /gpfs1/aws -N cloudNode -P /gpfs1/s3upload/policies/migration.policy --scope fileset I'd expect the mmapplypolicy command to run the policy on all the nodes in the cloudNode class, but it doesn't, it runs on the node that triggered the script. However, the following command does work as I'd expect: /usr/lpp/mmfs/bin/mmdsh -N cloudNode /usr/lpp/mmfs/bin/mmapplypolicy /gpfs1/aws -P /gpfs1/s3upload/policies/migration.policy --scope fileset Can any one shed any light on this? Have I just misconstrued how mmapplypolicy works? Regards, Peter Chase GPCS Team Met Office FitzRoy Road Exeter Devon EX1 3PB United Kingdom Tel: +44 (0)1392 886921 Email: peter.ch...@metoffice.gov.uk Website: www.metoffice.gov.uk _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org https://urldefense.proofpoint.com/v2/url?u=http-3A__gpfsug.org_mailman_listinfo_gpfsug-2Ddiscuss&d=DwIFAw&c=jf_iaSHvJObTbx-siA1ZOg&r=cvpnBBH0j41aQy0RPiG2xRL_M8mTc1izuQD3_PmtjZ8&m=WjhVVKkS23BlFGP2KHmkndM0AZ4yB2aC81UUHv8iIZs&s=-dPme1SlhBAqo45xVmtvVWNeAjumd7JrtEksW1U8o5w&e=
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