[gentoo-user] genkernel examples supporting RAID[4,5,6,10,...]?
Hi, I'm sort of glazing over falling asleep trying to understand the Gentoo genkernel Wiki page. This is not critical time-wise. I'm just curious about what genkernel could do in terms of creating a kernel an initramfs for a root partition on RAID 1 and metadata 0.9. I've done this in the past by hand but I've tended to stay away from / on RAID 1 simply because of the work of creating and maintaining the initramfs. If someone has a gnekernel.conf file that might be of interest I'd appreciate seeing it, along with how you run it from the command line. Thanks, Mark
Re: [gentoo-user] genkernel examples supporting RAID[4,5,6,10,...]?
On Wed, Sep 5, 2012 at 11:39 AM, Mark Knecht markkne...@gmail.com wrote: Hi, I'm sort of glazing over falling asleep trying to understand the Gentoo genkernel Wiki page. This is not critical time-wise. I'm just curious about what genkernel could do in terms of creating a kernel an initramfs for a root partition on RAID 1 and metadata 0.9. I've done this in the past by hand but I've tended to stay away from / on RAID 1 simply because of the work of creating and maintaining the initramfs. If someone has a gnekernel.conf file that might be of interest I'd appreciate seeing it, along with how you run it from the command line. I do, but I probably won't have time to sling it your way until this weekend. Prod me Friday or Saturday if you haven't found your answer by then. (Good timing, anyway; I've finished configuring my next kernel, just have to tie it together with genkernel.) -- :wq
Re: [gentoo-user] genkernel examples supporting RAID[4,5,6,10,...]?
Am 05.09.2012 17:39, schrieb Mark Knecht: Hi, I'm sort of glazing over falling asleep trying to understand the Gentoo genkernel Wiki page. This is not critical time-wise. I'm just curious about what genkernel could do in terms of creating a kernel an initramfs for a root partition on RAID 1 and metadata 0.9. I've done this in the past by hand but I've tended to stay away from / on RAID 1 simply because of the work of creating and maintaining the initramfs. If someone has a gnekernel.conf file that might be of interest I'd appreciate seeing it, along with how you run it from the command line. This is the config I have been using on systems with / on RAID1 or RAID5 (metadata 0.9). With genkernel it's pretty simple, just specify these two lines: ## # Includes mdadm/mdmon binaries in initramfs. # Without sys-fs/mdadm[static] installed, this will build a static mdadm. MDADM=yes # Specify a custom mdadm.conf. # By default the ramdisk will be built *without* an mdadm.conf and will auto-detect # arrays during bootup. Usually, this should not be needed. MDADM_CONFIG=/etc/mdadm.conf ## Just make sure you're mdadm.conf reflects your current raid setup. If you don't set MDADM_CONFIG the initramfs should auto asseble the RAID, but I have never used that. I don't trust it enough :) Last thing you need to do is pass the domdadm kernel parameter in your bootloader. With grub to you just edit /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT=domdadm Then regenerate your grub config.
Re: [gentoo-user] genkernel examples supporting RAID[4,5,6,10,...]?
Last thing you need to do is pass the domdadm kernel parameter in your bootloader. With grub to you just edit /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT=domdadm I meant grub2
