Raspberry Pi 4 - Hackdot

Re:Raspberry Pi 4 by TheAceOfHearts on Monday June 24, 2019 @07:06AM (#20262203)

As I understand it, this is just a myth. Here's a post [0] from Matthew Ahrens, one of the co-founders of ZFS who has remained active in its development:

> There's nothing special about ZFS that requires/encourages the use of ECC RAM more so than any other filesystem. If you use UFS, EXT, NTFS, btrfs, etc without ECC RAM, you are just as much at risk as if you used ZFS without ECC RAM. Actually, ZFS can mitigate this risk to some degree if you enable the unsupported ZFS_DEBUG_MODIFY flag (zfs_flags=0x10). This will checksum the data while at rest in memory, and verify it before writing to disk, thus reducing the window of vulnerability from a memory error.

[0] https://arstechnica.com/civis/viewtopic.php?p=26303271#p2630...

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Re:Raspberry Pi 4 by flyinghamster on Monday June 24, 2019 @10:25AM (#20263790)

> Actually, ZFS can mitigate this risk to some degree if you enable the unsupported ZFS_DEBUG_MODIFY flag (zfs_flags=0x10).

Ooooo, I hadn't heard about that one. I have one non-ECC box running ZFS where I might want to enable this. If the performance impact is negligible, it'd be worth trying.

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