On Wed, 10 May 2017 17:24:48 +0200 Wouter Verhelst <wouter@debian.org> wrote: > On Sat, May 06, 2017 at 03:35:52PM +0100, Sam Kuper wrote: > > On 06/05/2017, Ian Campbell <ijc@debian.org> wrote: > > > It would in theory be possible to arrange build and install modules > > > during installation using the in-progress target installation (where > > > the normal toolchain packages could be installed) such that they are > > > available during the latter parts of the install procedure -- that is > > > clearly of limited use for any modules which are required for the > > > filesystems which you want to install to (certainly the root fs and > > > perhaps any separate /usr or /var partition(s)). > > > > Given that a machine intended to run ZFS is likely to be provisioned > > with >2GB of RAM (much more than the Debian Installer would normally > > require), might a viable workaround be for the Debian Installer to > > take the following steps? > > > > - Ensure that some minimum amount of RAM is available, and refuse to > > proceed with a root-on-ZFS installation if not; > > > > - install the toolchain, ZFS source, and any other packages from > > "main" or "contrib" necessary to support these, to a RAM disk; > > > > - compile and load ZFS functionality; > > > > - format the target HDD/SSD using ZFS; > > > > - copy the toolchain binaries and ZFS source packages, etc, to the > > relevant places on the target HDD/SSD (/usr/bin , > > /var/cache/apt/archives/ , etc); > > > > - resume the installation as usual. > > I don't see why not. We already need the ability to run debootstrap; > this would just change that to a need to do so twice. > > It wouldn't be terribly efficient for a netinstall, since it requires > that you download the base system twice; but it could imagine a special > "non-free netinstall" image which would contain zfs-dkms and its > dependencies on top of the base system, so that you don't need to > download things more than once. > > I don't know whether anyone on this list would be actually interested in > adding the necessary support to d-i, but hey, if you are, I'm sure > patches are welcome. As a side note, I'll add that there is already a > partman-zfs, due to Debian-kFreeBSD; this should mean that you'd only > need to extend that to also do the compilation at first. > > -- > < ron> I mean, the main *practical* problem with C++, is there's like a dozen > people in the world who think they really understand all of its rules, > and pretty much all of them are just lying to themselves too. > -- #debian-devel, OFTC, 2016-02-12 > > I made a simple script which downloads, compiles and installes the zfs kernel module and zhe zfs,spool commands. Tested with the stable netinstall iso, after network is configured and deboostrap is downloaded. It makes a simple chroot environment, apt-get install zfsutils-linux and then copies the binaries and the necessary libraries over.
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