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On 11/17/2013 12:15 PM, Tanstaafl wrote: |
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> On 2013-11-12 4:55 PM, Tanstaafl <tanstaafl@×××××××××××.org> wrote: |
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>>> Depending on your system, you might want to add one or more of the |
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>>> following options: |
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>>> Option Description |
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>>> --disklabel Add support for LABEL= settings in your /etc/fstab |
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>>> --dmraid Add support for fake hardware RAID |
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>>> --firmware Add in firmware code found on the system |
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>>> --gpg Add in GnuPG support |
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>>> --iscsi Add support for iSCSI |
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>>> --luks Add support for luks encryption containers |
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>>> --lvm Add support for LVM |
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>>> --mdadm Add support for software RAID |
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>>> --multipath Add support for multiple I/O access towards a SAN |
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>>> --zfs Add support for ZFS |
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>> |
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>> So, are these *all* of the potential options? If so, then I can probably |
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>> safely say that all I need is lvm... |
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> |
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these options say do additional tasks. i.e. initialise lvm volume groups |
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or search and start all mdraid devices. or all of the above. |
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you only need lvm if root/usr is on lvm. |
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you only need mdadm if root/usr is on a mdraid |
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if your root/usr is on a normal device like /dev/sda3 but all data |
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drives are on lvm then you still do not need these options. |
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they are just what to do in the initramfs to get root mounted. |
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|
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> Never got a response to this... |
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> |
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> Maybe I can ask another way... |
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> |
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> Is this a complete list of the items that may break BOOTING? I |
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> understand now that you can add pretty much any drivers that you want, |
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> but on my server (that has the separate /usr), modules are disabled |
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> and so I have every driver and filesystem built into the kernel. |
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> |
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> Going just by the above list of items, the only thing I use is lvm, so |
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> I'm guessing (I *hate* guessing) that this is the only thing I need in |
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> my initramfs. |
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> |
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do you have kernel modules that are not compiled into the kernel in |
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order to mount root ? |
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i.e. is root on ext4 and ext4 is <M> in menuconfig |
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i.e. is root on an adaptec scsi card and the scsi drivers is <M> in |
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menuconfig |
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then you need to edit genkernel's modules_load |
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https://forums.gentoo.org/viewtopic-t-497370.html |
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|
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for split /usr check out initramfs.mounts |
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http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/sys-kernel/genkernel/files/initramfs.mounts?view=markup |
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i don't do this so can't comment if it works, maybe someone else can? |
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> Another question - is there any reason I couldn't just enable |
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> everything just in case? Or could that cause other problems? |
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> |
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if you have them selected anyway, it jus tmakes the boot process slower |
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as it scans for raid devices to find none.. |
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> On 2013-11-12 5:54 PM, Neil Bothwick <neil@××××××××××.uk> wrote: |
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> > There is a very capable tool for examining your system and deciding |
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> > what is needed... you. |
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> |
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> Yes, but again, I have never had to worry about this - EVER - in the |
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> past. The question simply never came up. |
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> |
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> Now, I am being FORCED to worry about it... and I want to understand |
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> it as much as possible. |
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> |
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hope this helps |
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