Does vmtouch support IBM GPFS (Spectrum scale filesystem)

hoytech / vmtouch

Portable file system cache diagnostics and control

https://hoytech.com/vmtouch/

BSD 3-Clause "New" or "Revised" License

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Does vmtouch support IBM GPFS (Spectrum scale filesystem) #102

Closed Amjadhpc closed 1 year ago

Amjadhpc commented 1 year ago

Hello

Just wanted to check if vmtouch has been tested on GPFS

hoytech commented 1 year ago

Hi! I have never tested it on this, but that doesn't necessarily mean it won't work. It really depends on how "normal" the filesystem is from a userspace perspective. vmtouch needs mincore(2) and some of the madvise/posix_fadvise system calls to work properly.

Best way is to test it yourself and let us know!

Amjadhpc commented 1 year ago

Thanks, after testing , creating a vmtouch daemon , does look like GPFS is not supported by vmtouch . For any one needing more technical stuff why its not supported , i asked the same question to GPFS mailing list and the response is here.

https://www.mail-archive.com/gpfsug-discuss@gpfsug.org/msg01165.html