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October 15th, 2020 06:00
Move Data from One Node Pool to Another Node Pool In the Cluster
Isilon Cluster contains x200 node pool, x210 node pool, and a h500 node pool. I need to move the data off the x200 node pool to one of the other node pools before I smartfail the nodes in the x200 node pool. Anyone have a file pool policy example (template) that I can use to accomplish the data relocation from one node pool to another node pool in the Isilon cluster. Thanks.
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Phil.Lam
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October 15th, 2020 16:00
@rmc_dell
Hopefully this post will help.
https://www.dell.com/community/Isilon/Isilon-smartpools-migration-with-multiple-node-types/td-p/7166492
1. Change your existing filepool policies to point to tiers instead of a specific node pool, so the tier might be called perf, an d comprised of just the X200s, and one called archive may be comprised of just the 108NLs..
2. Add the new nodes, and then put the new nodepools into the tiers.
3. Change the default filepool policy to write all new data to the X210s, so you stop making it worse.
4. Run a manual smartpools job, or wait until it runs on its own at 10PM, wait for that to finish.
5. Change your tiers by removing the old nodepools from them.
6. Run a manual smartpools job, or wait until it runs on its own at 10PM, wait for that to finish.
7. Watch and wait. See how it goes, then start smart-failing if those nodes are getting empty.
These steps don't account for the networking changes on the front-end (one-hint there always remove the node with the lowest Node ID last, to minimize the number of group merges). You have to, of-course make sure you have enough back-end switch ports and cables to get them all connected at the same time, and that the cables are of the right type X210 uses QDR/QSFP and X200 uses CX4/DDR IIRC, etc.
Anyway, hope it helps,
Chris Klosterman