Ubuntu server wont boot after clean install with software. During the install, make sure grub is installed to the mbrgpt of the primary disk. How to perform disk replacement software raid 1 in linux. Installing linux on software raid 1 kezhongs weblog. Install ubuntu on raid 0 and uefigpt system github. The example will be using raid 1 for everything except swap and temporary data. Installing gentoo with grub2, gpt, luks and software raid. When i perform a software raid 1 or raid 5 installation on a lan server with several hard disks, i wonder if grub already gets installed on each individual mbr, or if i have to do that manually. Having seen our plain and simple install of ubuntu 12. Arch linux is a generalpurpose linux distribution for x8664 computers and is very popular among the intermediate and advanced linux users. The grub bootloader will be configured in such a way that the system will still be able to boot if one of the hard drives fails no matter which one. Dear, we are trying to install a new xenserver 7 on a dedicated server. Re install grub devmd0 may be different for you depending on how you configured your software raid grub install devmd0.
First, i have set the raid 1 in the server hp embedded application, 2 hard drive of 1tb each, created the logical drive. A real scenario just needs to provide a raid 1 devmd0 that can be of any size provided it is enough hold the linux installation and composed of any software raid 1 partitions each partition in the array should reside on a different physical disk, possibly connect to different ide channels, to achieve maximum fault tolerance. Jun 24, 2005 however, the resulting array simply will not boot. The most important tool for setting up raid is mdadm. R410 w software raid always boots to grub shell after linux. What im not sure of is if i need to go through and install the grub boot loader onto the rest of the hard drives, or if this configuration sans efi wont work. In the event of a failure you can boot fine off the second disk because it has an identical copy of the original boot partition. How to set up software raid1 on a running system incl. This condition is not fatal, and simply rebooting off of the install cd and re installing grub will do the trick. This is a form of software raid using special drivers, and it is not necessarily faster than true software raid. Reads nf and then passes the button to the windows boot loader. On some systems its grub2install instead of grubinstall. I have created a raid 1 for the swap partitions, and raid 10 for. Proceed through the installer until you get to filesystem setup.
This means youll need to run grub install again if you replace one disk. Since raid hardware is very expensive, many motherboard manufacturers use multichannel controllers with special bios features to perform raid. Installing sles on software raid1 suse communities. I am attempting to install debian using the software raid raid 1. The only real catch is to make sure you install grub onto both disks when the install is complete. Thats the basics of multibooting of dual booting with linux and windows using grub. Later system upgrade was launched and grub updated. As maybe known, only lilo can directly boot from software raid but with tricks grub can read the underlaying partition on only one of the raid devices, which will obviously not work with striping raid setups.
R410 w software raid always boots to grub shell after linux install appreciate the reply, but i just bit the bullet and installed ubuntu on a flash drive and use fstab to mount partitions of the assembled raid on different parts of the filesystem. We keep sets of ssds available in the lab so these drives can be considered well used at this point. Mar 17, 20 having seen our plain and simple install of ubuntu 12. I am using a software raid 1 mirror on two drives and the first drive has failed or been physically removed. Using a redundant array of independent disks raid is one way to build redundancy. I have 2 disk western digital wd2002faex 2tb and i want to install squeeze with software raid 1 and gpt instead of old msdos partition map. Be aware, that if you use lvm on a raid 1 array you must do one of the following when booting from the installation cd. The information applies to most versions of grub 2, but is specifically written for version 1.
My problem is that grub2 install absolutely and resolutely refuses to install on devsda or devsdb. I get through the initial setup of the, hostname, fully quilified domain name, root password, new userpassword setup, and i get to the partioning and software raid configuration. Hi, i have an r410 with a sas6ir no dedicated raid card, 4x3tb drives, and it came preinstalled with windows. Software raid 1 setup on centos using grub boot loader. Dec 10, 2016 home topics contact how to install ubuntu server 16. This guide explains how to set up software raid1 on an already running ubuntu 10. Now it promped to select grub unstall devices from the list to finish upda. Linux handles raid and syncs the two boot partitions. Please note that with a software implementation, the raid 1 level is the only option for the boot partition, because bootloaders reading the boot partition do not understand raid, but a raid 1 component partition can be read as a normal partition. Solved cant install grub2 on software raid installation. When raid1 is used for mirroring partitions by anaconda, grub is unable to install itself to mbr. How to set up software raid 1 on a running system incl grub. Install ubuntu with software raid mdadm for the installation, im using the live server installer for ubuntu server 18.
Solved cant install grub2 on software raid my several installs of raid0 utilized grub 2 with no problems. Installing grub2 on mdadm software raid in debian wheezy. Here we discuss how to configure and install grub and the basics of multibooting of dual booting with linux and windows using grub. 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. I want to use grub2 as boot loader, but i read that is needed to be created. I tried grub install with each of devmd0, devmd1, devsda, and devsdb. Installing the sles operating system is rather straight forward. Besides, based on the original request, if one drive fails, then he.
Installing ubuntu server with software raid 1 for this guide we are using two samsung 830 256gb ssds. If you have 2 x 500 gb hdd then total space become 1 tb. I want to use grub2 as boot loader, but i read that is needed to be created a bios boot partition. I get through the initial setup of the, hostname, fully quilified domain name, root password, new userpassword setup, and i get to the partioning and software raid. R410 w software raid always boots to grub shell after. This article describes how to setup a linux system that can boot directly from a software raid 1 device using grub. Its look like that the only procedure public, on that matters is described on that thread. When asked to install bootloader, install to first device. This option is the only choice available if your disk contains no software raid partitions. Even if one of the disks in the raid array fails, the system can still boot. Make sure you pass the proper device names to the nf. Hello all, i am trying to setup a raid 1 on my system that has 2 identical ide hard disks. How to set up software raid 1 on a running system incl grub 2 configuration from newroco tech docs. When the root file system is located on a software raid, an initramfs is necessary for automatic assembly.
Be aware, that if you use lvm on a raid 1 array you must do one of the following when booting from the installation. May 25, 2019 hello guy i need to install an ubuntu desktop with raid 1 software and i need to clarify points that i discovered were not so clair in my mind. Setting up a bootable multidevice raid 1 using linux. After first boot, consider executing dpkgreconfigure grub pc or dpkgreconfigure grub efiamd64 on efi systems, and install to all devices.
The problem is at the end of the installation, it tries to install grub. This condition is not fatal, and simply rebooting off of the install cd and reinstalling grub will do the trick. Bug 160563 grub install devmd0 does not install on second disk in raid 1 array correctly. Its pretty straight forward installing an operating system on hardware raid, but what if you want to use software raid. There are a few minor differences between doing this on 14.
Installation of arch linux using software raid serveradminz. When the bootloaderstep is entered i selected grub2 each time i loaded a new raid install. How to set up software raid 1 on a running system incl. Jul 09, 2009 installing linux on software raid 1 when you setup a server for a critical application system, the reliability is your first consideration. By default it tries my first disk, which gives a fatal error. Ideally with raid 1, raid 5, etc once can easily do a hot hdd swap as they support mirroring at the hardware level but to do the same on a software raid 1 becomes tricky as ideally an os shutdown is needed to avoid any application impact during the hdd swap. My guess is that it all depends on the type of raid. The installation completed, and when the system rebooted, the os didnt come up. Actually we have two disk on that server, so we need to configure him on raid 1. Jun 07, 2016 this feature is not available right now. Cannot install grub to raid1 md0 ask question asked 7 years.
This guide explains how to set up software raid1 on an already running debian etch system. This is the same dialog that appears when you add a standard partition refer to section 23. During my centos 7 install is where i performed the software raid1 configuration. Since the command grubinstall devmd0 or grubinstall devmd0 produces.
I never do the default partition configuration so here is my setup used fdisk l. Installing linux on software raid 1 when you setup a server for a critical application system, the reliability is your first consideration. In this blog, we will check out how to install arch linux by setting software raid 1. Im not aware of support in grub to declare two disks as being in a raid 1 array so that grub install would automatically write to both. If the two disks are devsda and devsdb, run both grubinstall devsda and grubinstall devsdb. Uefi should be able to boot whatever disk hasnt failed, and grubinstall will write to the raid mounted at bootefi. Once youre booting into your raid partitions, add the sda 1 4 partitions to the appropriate raids, change the partition types on sda to 0xfd, and remember to clean up the legacy grub installation on sda with grub2 install devsda. This guide will show how one can use mdadm to install ubuntu server on a raid 1 setup. Following this, there are also no guides on installing the grub bootloader to both gpt partitioned devices afterwards. Cannot install grub to raid1 md0 ask question asked 7 years, 5 months ago. In case your next hdd wont boot then simply install grub to another drive. You can imagine what will happen if the server can not boot due to disk failure. Choose this option to configure a partition for software raid.
Besides, based on the original request, if one drive fails, then he can boot from the other drive. In this case, boot is not in software raid 1, right. Feb 27, 2020 i have created a raid 1 for the swap partitions, and raid 10 for. How do i install grub on a raid system installation. Im using linux software raid with the following configuration.
I made a raid 1 of two raw disks, devsda and devsdb, not devsdax devsdbx. Using your centos install media, boot in to rescue mode. I have installed ubuntu, debian and centos dozens of times, and. Then i installed centos 7 on the raid, with boot, and swap being partitions on the raid. For software raid 0, i would think that if the size of grub which is written normally in the mbr is not bigger than the raid 0 stripe size, then it should not be any problem and grub could be written on the first physical drive seen by bios. The grub2 bootloader will be configured in such a way that the system will still be able to boot if one of the hard drives fails no matter which one. For this guide we are using two samsung 830 256gb ssds. Mar 06, 2015 this page details the procedures for installing and reinstalling grub 2. The key to success appears to be the correct installation of grub into efi. Uefi should be able to boot whatever disk hasnt failed, and grub install will write to the raid mounted at bootefi.
This bug report is about installing grub on a software raid mirror. Apr 19, 2018 now we have a visible fat32 filesystem on the esp. Attempting to install grub to a disk with multiple partition labels or both partition label and filesystem. The first step is to insert installation media into the machine and boot the machine. Once you are booted in to rescue mode, select the start shell option.
When trying to make the second drive bootable, grub install fails telling me devhdx does not have any corresponding bios drive. On centos 7 page i did select both drives, all config for raid,lmv is done on the centos 7 page. For more information on a variety of grub 2 topics, please visit the grub2 main page. Grub isnt actually using it as raid1 when booting i.
The mirrored array provides redundancy for the system disk. If the system partitions are on a software raid install grub 2 on all disks in the raid. Jan 25, 2017 if you are using software raid, you must have configured it yourself. What im not sure of is if i need to go through and install the grub boot loader onto the rest of the hard drives, or. In the last days i tried to install archlinux x64 on my server. I am using a software raid 1 mirror on two drives and the. Software raid for root file system boot using grub 2.
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