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Best Guest VM Filesystem for NTFS Host (infosec.pub)

submitted 2 years ago by anon2963@infosec.pub to c/selfhosted@lemmy.world

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I am setting up a Linux server (probably will be NixOS) where my VM disk files will be stored on top of an NTFS partition. (Yes I know NTFS sucks but it has to be this way.)

I am asking which guest filesystem will have the best performance for a very mixed workload. If I had access to the extra features of BTRFS or ZFS I would use them but I have no idea how CoW interacts with NTFS; that is why I am asking here.

Also I would like some NTFS performance tuning pointers.

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[–] pyrosis@lemmy.world 1 points 2 years ago (1 children)

Within guests these days I just use XFS, UFS, or NTFS depending on the os. The hypervisor can have zfs or ceph.

[–] possiblylinux127@lemmy.zip 1 points 2 years ago (1 children)

Ufs seems weird to use outside of flash

[–] pyrosis@lemmy.world 1 points 2 years ago (1 children)

It seems that way but it performs better than zfs on top of zfs. The only os I ran into that with was opnsense when I was playing with a virtualized firewall.

[–] possiblylinux127@lemmy.zip 1 points 2 years ago* (last edited 2 years ago) (1 children)

Don't do ZFS on ZFS. It will destroy performance.

I personally go for EXT4 as is solid and light weight. It is also somewhat resistant to power loss

[–] pyrosis@lemmy.world 1 points 2 years ago

That's what I said. Cow on top of cow is bad. Pretty sure ext4 isn't on option on opnsense. UFS or zfs. Which is the only reason I mentioned it at all when presented with that choice.