On Tue, Nov 12, 2013 at 3:55 PM, Tanstaafl <tansta...@libertytrek.org> wrote: > On 2013-11-12 4:49 PM, Tanstaafl <tansta...@libertytrek.org> wrote: >> >> Ok, looking into this now... >> >> Reading the referenced wiki page shows this comment: >> >>> Introduction and bootloader configuration >>> >>> To create an initramfs, it is important that you know what >>> additional drivers, scripts and tools you need to boot your system. >>> For instance, if you use LVM, then you will need to support LVM tools >>> on the initramfs. Likewise, if you use software RAID, you need mdadm, >>> etc. >> >> >> I thought I'd mentioned/asked this before, but don't recall a >> satisfactory answer... >> >> Ok, up until now, I haven't *had* to 'know' what additional drivers are >> needed by my system to boot. >> >> So... how the heck am I supposed to find out? Trial and error? > > > Further down under the genkernel section has: > >> Depending on your system, you might want to add one or more of the >> following options: >> Option Description >> --disklabel Add support for LABEL= settings in your /etc/fstab >> --dmraid Add support for fake hardware RAID >> --firmware Add in firmware code found on the system >> --gpg Add in GnuPG support >> --iscsi Add support for iSCSI >> --luks Add support for luks encryption containers >> --lvm Add support for LVM >> --mdadm Add support for software RAID >> --multipath Add support for multiple I/O access towards a SAN >> --zfs Add support for ZFS > > > So, are these *all* of the potential options? If so, then I can probably > safely say that all I need is lvm...
You *MUST* add the necessary modules/tools to mount root and/or /usr. So if you have an XFS partition on a LVM volume on top of an mdraid, and the partition is encrypted, then you need the kernel modules for xfs, lvm, mdraid and crypt, and the corresponding userspace tools, including fsck.xfs. You *MAY* add whatever else you want in your initramfs (I add the drivers for my USB keyboard, so in case of emergencies I can actually type commands), but the only parts you *MUST* include are the ones you need to mount (and check) your root and /usr partitions. I strongly recommend dracut; the modules listed in DRACUT_MODULES are usually self explanatory, and it Just Works™. Regards. -- Canek Peláez Valdés Posgrado en Ciencia e Ingeniería de la Computación Universidad Nacional Autónoma de México
