5 ms·

BTW, if ZFS is used for the root filesystem, say hello to insanely simple OS upgrades and roll-backs :)

StavrosK 11y ago
This is my #1 question. Can we use it for the root FS? If so, that's amazing, as there are already btrfs-based tools for snapshotting every time you run apt, etc.
- helper 11y ago
  There are a couple of open bugs[1][2] related to grub and ZFS that make it a little tricky to get ZFS on your root volume, but it is doable: https://github.com/zfsonlinux/pkg-zfs/wiki/HOWTO-install-Ubuntu-16.04-to-a-Native-ZFS-Root-Filesystem https://github.com/zfsonlinux/pkg-zfs/wiki/HOWTO-install-Ubu.... I expect those issues to be resolved before 16.04 is released. Even with those fixes, the interactive installer doesn't support ZFS yet so you will still need to drop to a shell to actually setup your zpool and your partitions. [1]: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1527727/ https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1527727... [2]: https://bugs.launchpad.net/ubuntu/+source/zfs-initramfs/+bug/1530953 https://bugs.launchpad.net/ubuntu/+source/zfs-initramfs/+bug...
Filligree 11y ago
You could also use NixOS, which is even better at this. :) And also has native support for ZFS, btw.
- ossreality 11y ago
  Yup. ZFS won't save you from a hosed Grub config. NixOS will.
- JdeBP 11y ago
  Or indeed PC-BSD. (-: PC-BSD's installer understands ZFS. It creates an all-ZFS system, including the root volume. The boot manager uses ZFS for "boot environments". * http://download.pcbsd.org/iso/10.2-RELEASE/amd64/docs/html/install.html#zfs-layout http://download.pcbsd.org/iso/10.2-RELEASE/amd64/docs/html/i... * https://www.ixsystems.com/whats-new/2013/10/31/the-revamped-life-preserver/ https://www.ixsystems.com/whats-new/2013/10/31/the-revamped-... * https://blog.pcbsd.org/2013/06/pc-bsd-status-update/ https://blog.pcbsd.org/2013/06/pc-bsd-status-update/

This is my #1 question. Can we use it for the root FS? If so, that's amazing, as there are already btrfs-based tools for snapshotting every time you run apt, etc.

helper 11y ago
There are a couple of open bugs[1][2] related to grub and ZFS that make it a little tricky to get ZFS on your root volume, but it is doable: https://github.com/zfsonlinux/pkg-zfs/wiki/HOWTO-install-Ubuntu-16.04-to-a-Native-ZFS-Root-Filesystem https://github.com/zfsonlinux/pkg-zfs/wiki/HOWTO-install-Ubu.... I expect those issues to be resolved before 16.04 is released. Even with those fixes, the interactive installer doesn't support ZFS yet so you will still need to drop to a shell to actually setup your zpool and your partitions. [1]: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1527727/ https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1527727... [2]: https://bugs.launchpad.net/ubuntu/+source/zfs-initramfs/+bug/1530953 https://bugs.launchpad.net/ubuntu/+source/zfs-initramfs/+bug...

Filligree 11y ago

You could also use NixOS, which is even better at this. :) And also has native support for ZFS, btw.

ossreality 11y ago
Yup. ZFS won't save you from a hosed Grub config. NixOS will.
JdeBP 11y ago
Or indeed PC-BSD. (-: PC-BSD's installer understands ZFS. It creates an all-ZFS system, including the root volume. The boot manager uses ZFS for "boot environments". * http://download.pcbsd.org/iso/10.2-RELEASE/amd64/docs/html/install.html#zfs-layout http://download.pcbsd.org/iso/10.2-RELEASE/amd64/docs/html/i... * https://www.ixsystems.com/whats-new/2013/10/31/the-revamped-life-preserver/ https://www.ixsystems.com/whats-new/2013/10/31/the-revamped-... * https://blog.pcbsd.org/2013/06/pc-bsd-status-update/ https://blog.pcbsd.org/2013/06/pc-bsd-status-update/