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1. 关于unlic的说明:
unlic indicates that unlicensed PowerPath is running for a CLARiiON storage system (no license key has been installed). In this scenario, all paths are marked unlicensed except one path to each SP. Unlicensed paths cannot become candidates for path failover.
2. 关于 powermt set policy=li|lb|rr|re 的使用说明
[class=symm|clariion|ess|hitachi|hpxp|hphsx|invista|all]
[dev=device|all]
powermt set policy=so|nr [dev=device|all]
powermt set policy=bf|co [dev=device|all]
powermt set policy=ad|nr
[class=hitachi|hpxp|hphsx|ess|invista] [dev=device|all]
powermt set policy=co
I/O requests are assigned to paths based on an algorithm that takes into account path load and logical device priority. This policy is valid only for CLARiiON storage systems and is the default policy for them, on platforms with a valid PowerPath license.
详细说明见EMC的Powerpath 4.5 guide
300-002-834_a04_elccnt_0 Powerpath 4.5 Guide.pdf |
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