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Budoka l33t
Joined: 03 Jun 2012 Posts: 777 Location: Tokyo, Japan
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Posted: Mon Aug 23, 2021 6:27 pm Post subject: Intel Optane Supported? |
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I am still trying to figure out if Intel Optane is supported at all in Gentoo/Linux and if so how to configure it during the installation process.
In another thread, someone pointed me to a resource that seems to indicate it can be done. (See: https://www.codenotary.com/blog/ubuntu-how-to-use-intel-optane-memory-for-ssd-caching/)
But, unless I am misunderstanding, this is indicating that it isn't supported for Dual Boot boxes which ideally is what I need,
Quote: | Be aware: Since there is no support for RST's caching with Optane memory in Linux, you can't dual boot Windows with RST caching configured, and Linux. Either turn of Optane in Windows or put Windows into a VM in the Linux OS. To make things not complicated, the following won't consider dual boot. |
But some digging around at Intel it appears it may be possible. They recommend using the open source MD RAID package which they contribute to as well.
https://www.intel.com/content/dam/www/public/us/en/documents/white-papers/rst-linux-paper.pdf
Are RST and MD RAID mutually exclusive. By that I mean can I leave RSA in place (ie BIOS) for booting into WIn10 and somehow configure MD RAID to be used with Gentoo?
Or am I just making things more complicated than they need to be? |
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Phoenix591 Guru
Joined: 17 Sep 2007 Posts: 483
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Posted: Sat Aug 28, 2021 12:08 pm Post subject: |
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you cannot setup the optane chip for use in windows and gentoo at the same time. First, if you still want to keep dual booting, disable optane within windows. Then, if you turn off raid/optane related settings in your bios, the chip becomes visible in linux.
Then you can set it up with something similar to optane: bcache
Edit: You might be able to use mdadm or dm-raid to see some metadata, but theres no raid level to do partial mirriring/cacheing like optane. have to use other tools like bcache to handle the caching |
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