User talk:Monsieurp/Gentoo Linux on ZFS

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When doing zpool create, use WWNs for persistent block device naming or else grub-probe may have trouble. This is especially important when wanting to USE=libzfs with GRUB and to boot with root on ZFS. You can find the World Wide Names by looking in /dev/disk/by-id/. sys-boot/grub-2.02-r1, sys-fs/zfs-0.7.12, December 2018.

Hello, I added some minor things I ran into while migrating a working Gentoo install to ZFS root; thank you for your guide! The section on kernel compilation provided the missing key I needed to figure out why my initramfs seemed to have a random chance of not working. --Bombcar (talk)

Added hints for systemd setup and to use by-id for the disk as mentioned above. --HideBehind (talk)

When doing zpool create on a virtual machine, you cannot use WWNs or anything else in /dev/disk. It's not populated. You must use /dev/sdb, and the like.

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Uploads without a license are against policy and must be removed. Thanks. --Grknight (talk) 15:01, 28 June 2021 (UTC)

Is "ashift=12" setting still warranted?

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Ashift appears to have been addressed back in 2014 by the dev who posted before closing off the topic.

"Commit c8c8d1e added a list of devices which are known to misreport their physical sector size. And most new devices are now correctly reporting 4k sectors"

It was also pointed out having ashift=12 set unnecessarily will have a large penalty hit on storage space.

ps cheers for the great how-to! Russelld (talk) 03:17, 13 January 2023 (UTC)