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zfsonlinux / pkg-zfs

Native ZFS packaging for Debian and Ubuntu
https://launchpad.net/~zfs-native/+archive/daily
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ZFS pool features for whole-disk mirror rpool (/) if /boot is on external drive #191

Closed osinskit closed 8 years ago

osinskit commented 8 years ago

I installed system (ubuntu 16.04) in such way:

There will be a large pool added later (most probably 2xraidz2 pool with l2arc) Installation was based on (and the pool was created with the features recommended by): https://github.com/zfsonlinux/pkg-zfs/wiki/HOWTO-install-Ubuntu-16.04-to-a-Native-ZFS-Root-Filesystem A small modification was that I put /boot and /boot/efi on external drive and created whole disk mirror for /

My question is: Can I enable all features available for current ZFS pool version (zpool upgrade mymirroredpool) or doing it will make the system unbootable from grub (again: /boot and /boot/efi are on separate disk, / is a whole-disk mirror pool)?

I do not have the possibility to test it myself, so if anybody did something similar I will be grateful

dajhorn commented 8 years ago

@osinskit, GRUB support will always lag ZoL, so using the latest ZFS features could indeed make the system unbootable. Unless you have a specific need for a new feature flag, then I recommend following the documentation for root pools.

osinskit commented 8 years ago

Great! Thanks for the answer.

dajhorn commented 8 years ago

@osinskit, welcome.