Software raid if you need a very lowcost system but still want. Jun 24, 2005 raid devices should be assembled by the kernel before any. Installing grub2 on gnulinux software raid sinodun. Gentoo provides its users several possible kernel sources. You know what gentoo is and what you are getting yourself into, you. This part will attempt to discuss various interesting topics that might help you get more out of gentoo linux.
From now onwards, use devmd1 for the boot partition, devmd2 for the swap partition and devmd3 for the root partition right before chrooting, dont forget to copy over etcnf to mnt gentoo etc when youre configuring your kernel, make sure you have the appropriate raid support in your kernel and not as module when installing extra tools, emerge sysfsmdadm as well. The gentoo wiki has information that discusses both grub 1 and grub 2. This is not a replacement for the official gentoo handbook. Script to do scrubbing on software raid systems in the gentoo packages database. Unbound is designed as a set of modular components, so that also dnssec secure dns validation and stubresolvers that do not run as a. Redundant array of inexpensive disks raid is a technology to combine multiple disks in order to improve their reliability andor performance. Installing gentoo with grub2, gpt, luks and software raid. Grub 1 doesnt know anything about raid, but can fake reading from a raid1 device by reading one of the disks this requires a 0.
If somethings wrong please feel free to correct it. Run script on system start and system shutdown etclocal. Complete amd64 handbookusers and the linux file system. Once the ins and outs of disks and filesystems are understood, partitions and filesystems can be established for the gentoo linux installation. This documentation is free for all to read and use.
These are maintained by the gentoo developers, and patched to fix security vulnerabilities, functional problems, as well as to improve compatibility with rare system architectures. I have been setting up a two machines with software raid to use as xen virtual environments. Gentoo installation with raid, lvm, luks and systemd. This handbook contains the installation instructions for an internetbased installation and basic instructions about working with portage, gentoo s package manager. The location in which it stores the partition information is much bigger than the 512 bytes of an mbr, which means there is practically no limit on the amount of partitions for a gpt disk.
The following people contributed to the original document. The handbook authors suggest using gpt whenever possible for gentoo installations gpt. Software raid if you need a very lowcost system but still want redundancy, using software raid is a minimal requirement. Linux software raid superblock error solutions experts. This allows for passing options to the devicemapper raid subsystem. May 08, 2012 introduction this is a guide to help with the initial setup and install of gentoo on a fairly recent pc with uefi. If you like speed, but dont like spending money, software raid 0 is for you.
The latter usually tends to be a form of software raid that only works in windows, not true hardware raid. After running in to a couple of problems and banging my head against the table i decided to use the software raid with better control. We will be using gentoo installation as an example. Begin by downloading a gentoo install cd install amd64 minimal20509. Linux raid1 mdadm installation gentoo forums view topic. Gentoo linux step by step installation guide with screenshots. Gentoo raid installation and other sundry ways to wack your box by g. Gentoo hardened on software raid howto toms basement. It is built on an ecosystem of free software and does not hide what is beneath the hood from its users. I finally got this scsi driver instability issue fixed, so in case this will be helpful to anyone i am posting this conclusion in hope it will save somebody time as it. How to do a gentoo install on a software raid by chris atwood 1. The price of this performance boost is some additional cpu usage. I thought id jump on the amd64 wagon and keep running linux. Portage, the package maintenance system which gentoo uses, is written in python, meaning the user can easily view and modify the source code.
Jan 26, 2014 gentoo installation with raid, lvm, luks and systemd. The core around which all distributions are built is the linux kernel. For amd64 based systems gentoo recommends the syskernel gentoo sources. Setting up raid 1 on existing system gentoo forums view topic. Ive used onboardfakepseudo raid with gentoo in the past, and i dont recall it. Begin by downloading a gentoo install cd installamd64minimal20509. I finally got this scsi driver instability issue fixed, so in case this will be helpful to anyone i am posting this conclusion in hope it will save somebody time as it did waste more than 36 hours of my time. After a disaster involving my cat, a pot of coffee and my workstation, i am now in the market for a new machine.
Gentoo forums view topic how to do a gentoo install. Onboard raid0 with dmraid gentoo forums view topic. This handbook tries to extend on various subjects regarding linux and the. Live environments and stage archives can be downloaded using the links below. Complete amd64 handbookstarting from minimal environment. Devicemapper raid tool and library in the gentoo packages database.
I am not the best typist this side of stone mountain. This does not work because its not true hardware raid once you get into linux. Installing gentoo with grub2, gpt, luks and software raid mdraidmdadm so for various reasons i wanted to install gentoo utilizing full disk encryption with luks except for boot ofc, mdraid, gpt and grub2. The gentoo project should deprecate andor mask the gentoosources package or perhaps rename it to gentoo2. How to do a gentoo install on a software raid gentoo forums. It is the layer between the user programs and the system hardware. Hpt374 highpoint rocketraid 454 is raid controller, but its a software raid card solution, so i dont use its raid drivers, i only use it as a ide card, because it has 4 ports on it. Contents reflect the opinion of the author, not the gentoo project or the gentoo foundation. Introduction this is a guide to help with the initial setup and install of gentoo on a fairly recent pc with uefi. Unbound is a validating, recursive, and caching dns resolver. Generally, raid redundant array of inexpensive disks is found.
Full sources including the gentoo patchset for the 5. There should be no issue going multilib nomultilib, as gcc and glibc from multilib will handle nomultilib aka 64bit only just fine, since they have that as one of their libraries already. There are multiple modes of raid, each with tradeoffs between speed and data redundancy. Ive got problems during installation gentoo with software mirror raid. When youre configuring your kernel, make sure you have the appropriate raid support in your kernel and not as module. This is the gentoo handbook, an effort to centralize gentoo linux information. A full listing with description is available at the kernel overview page. Complete amd64 handbookversions media installation concerns. Note that the situation is completely different in grub 1 and grub 2. There is hardware raid, implemented by the controller on your motherboard or specific extension cards, and there is software raid, implemented by the kernel. I was attempting to create the devmd1 device per the instructions and kept running in to the error. Raid devices should be assembled by the kernel before any. About the install before you start reading this howto you should read the x86.
May 30, 20 installing gentoo with grub2, gpt, luks and software raid mdraidmdadm so for various reasons i wanted to install gentoo utilizing full disk encryption with luks except for boot ofc, mdraid, gpt and grub2. After some initial investigation, it became clear that ati, promise and other manufacturers dont have 64bi. It is based on ideas and algorithms taken from a java prototype developed by verisign labs, nominet, kirei and. I want to mirror the entire disks as raid device instead of creating.
I cant tell, the box has powered down a few times and i. This should result in a huge jump in io performance on your system. The linux software raid driver will start creating the metadevices. The gentoo recommended kernel sources for a desktop system are, of course, syskernelgentoosources. Im looking for an official guide for installing gentoo with full disk encryption. When installing extra tools, emerge sysfsmdadm as well. At the time of writing dracut was still in amd64 so we emerge it like this. The gpt guid partition table setup uses 64bit identifiers for the partitions.
Lets take a good look at diskoriented aspects of gentoo linux and linux in general, including linux filesystems, partitions, and block devices. In this chapter we will describe how to use software raid within gentoo linux. Feb 04, 2020 full sources including the gentoo patchset for the 5. I decided to run gentoo as the dom0 os because there is lots of good documentation for it and it has. Note that this isnt available on all installation cds so you might not be able to install gentoo on a software raid when using a networkless installation. Davis, pierrehenri jondot, eric stockbridge, rajiv mangliani, jungmin seo. But as always in gentoo theres other options also available.
Formatpartition the array and then hit reset when it begins to copy files over and boot with the gentoo live cd, delete the windows partition and createformat the linux partitions. For illustrative purposes we will also create other partitions using lvm2 on the raid1 array, providing a fully mirrored system. Gentoo forums view topic unable to create software raid. In this chapter we will describe how to use software raid within. Gentoo is a fast, modern metadistribution with a clean and flexible design. The c implementation of unbound is developed and maintained by nlnet labs. This page is based on a document formerly found on our main website gentoo. The sysblock category contains packages which work with block devices.
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