What's the different between ipmitool power cycle and reboot?

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I'm a newbie in linux. So, could anyone tell me what's the difference between ipmitool power cycle and reboot? Thanks.

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IPMI cycle performs a cold reboot. Cold means that shutdown is not done in an orderly manner and the synchronizations with the underlying filesystem does not happen so you could possibly lose some data that was cached in page cache memory and not committed to the storage.

While the "reboot" command line tool performs a warm reboot and hence no data loss could occur.

More on cold/warm reboot here:

https://en.m.wikipedia.org/wiki/Reboot_(computing)#