[Caiman-team] [OpenIndiana Distribution - Feature #532] Installer support for ZFS compression

[illumos project]

Issue #532 has been updated by Jim Klimov.

Difficulty set to Medium
Tags set to needs-triage

I checked with oi_151a5 - creating a gzip-9 compressed dataset and rsyncing contents of a snapshot of the current rootfs into it resulted in a bootable system (with manual additions to GRUB's menu.lst). This dis not boot when I tested the same technique a couple of releases ago (GRUB refused to read the root dataset).

"zfs set compression" and "zpool set bootfs" do still protect the user from combining compression with bootability, though this can be worked around trivially. I think these checks are now obsolete, or rather they need updating to allow those combinations that are known to work with grub (of current release with assumed-known features, or better somehow query grub's capabilities) - and by default protect users against other combos, including algorithms unknown to this given release of the OS.

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Feature #532: Installer support for ZFS compression
https://www.illumos.org/issues/532

Author: Albert Lee
Status: New
Priority: Low
Assignee: OI Caiman
Category: Caiman (Installer)
Target version: 
Difficulty: Medium
Tags: needs-triage


Caiman should support ZFS compression and (for @gui-install@) adjust the minimum required disk space accordingly.


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