Ive read the software raid howto, but something isnt clear to me. Changed bug title to add news item about endoflife for old raid format from grubpc grub2 2. Can i create the raid prior to partitioning the disks in the installer. Home how to set up software raid1 on a running system incl. How to set up software raid1 on a running system incl. Here are some things to consider that will help you decide. This time we are going to explain you here about the concept and configuration of software raid10 step wise in detail. Installing grub2 on mdadm software raid in debian wheezyjessie principle. I am attempting to install debian using the software raid raid 1. Ok, so i found solution of my problem booting from mdadm raid1. If an initrd created with initramfstools is used to boot the system, in some cases the creation of device files by udev can happen too late for the boot scripts to act on. I too run raid1 on all my debian systems so ill add comments from my experience. This is the preferable and more reliable method to establish software raid arrays.
Im using debian squeeze, and running lvm on top of software raid 1. Id previously set up raid 1 on systems and there was no real issue about boot it could be read on one drive or the other. The live images come in several flavors providing a choice of desktop environments gnome. The raid 6 array type is implemented by striping data across the available devices. For installation images and documentation about how to install bullseye which is currently testing, see the debian installer page to install debian 10. From what ive been reading, it looks like linux cant boot from a software raid 5 array. To complete the testing, shut the machine down, pull devsda out and try booting with. Detailed steps to boot linkstation by debian installer images some tips during the installation. The most important tool for setting up raid is mdadm. Now we reboot the system and hope that it boots ok from our raid arrays. How to configure a debian squeeze linux system to boot from a raid1 device using grub, such as the system can boot even if the boot disk fails orand is removed. However, i havent seen this issue raised in any recent howtos just on old ones. My guess is that it all depends on the type of raid. It also contains pointers to more information and information on how.
Hello i have very strange problem creating swraid on debian squeeze linux. Fresh debian squeeze software raid install wont boot. Grub2 configuration debian squeeze 1 preliminary note. Our team at linuxforce recently put together a debian server with lvm on a software raid5 volume. Software raid 5 in ubuntu debian with mdadm 9 min read. Apr 28, 20 i was having problems with the installer, because when we create an mdraid partman only allows to use whole disk i cant redo the partition layout, so i was booting to the livecd and using gdiskparted i redo the md1, create gpt scheme and a few partitions boot, var, ur and home, since i prefer to keep things apart and use different mount options like nodev, nosuid or boot. See the debian installation guide for more information. Im quite ashamed that it took me so much time to figure this out, because its. Build and migrated to software raid mdadm on gpt disk, now cant assemble array. 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. Rescue mode should be used with great care when software raid. I had a nightmare with my highpoint 640 raid controller, apparently because debian squeeze now handles raid through sysfs rather than procscsi. 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. Set up your fake raid in the bios see owners manual.
The solution to this, of course, is to recompile the kernel with the appropriate module for procscsi support. I was having problems with the installer, because when we create an md raid partman only allows to use whole disk i cant redo the partition layout, so i was booting to the livecd and using gdiskparted i redo the md1, create gpt scheme and a few partitions boot, var, ur and home, since i prefer to keep things apart and use different mount options like nodev, nosuid or boot. A live install image contains a debian system that can boot without modifying any files on the hard drive and also allows installation of debian from the contents of the image is a live image suitable for me. How to set up software raid 1 on an existing linux distribution. This example has two physical disks, devsda and devsdb, which are identical. For some reason this is often described as aavmf to distinguish it from ovmf for x86. I found a ubuntu wiki that discussed how to force it to boot a degraded raid but seemed to do nothing here on. How to configure a debian squeeze linux system to boot from a raid1 device using grub, such as the system can boot even if the boot disk. Grub boots at disk level and not at software raid level it seems. This is a software that being developed to handle the raid procedure inside the server. I wanted to always set up software raid mirror, even if there was just one hard disk so later a second hdd could be added to mirror quickly. Example partitions of a 1tib disk follow, set each raid partition to fd. Sometimes you need to store data relative save and high available. Debian installer for buffalo linkstation nas install debian to headless device.
The first thing i did was a fresh install of squeeze, or maybe wheezy. Recover software raid1 after hdd failure on debian squeeze. Beware that raid 0 is for speed only and probably not much of an increase at that, it actually reduces reliability. Cant boot newly created mdadm software raid in debian linux. Does grub2 really support putting boot on a software raid1 partition with 1. Not sure how to make my software raid bootable from both disk. Grub2 configuration debian squeeze page 2 4 creating our raid arrays.
It came with a 250gb sata, so i added a second 250gb sata. Browse other questions tagged boot software raid mdadm grub or ask your own question. In the debian installer, partition each disk to have a 256mb partition and a second partition that is the rest of the disk. Jun, 2017 follow the below steps to configure raid 5 software raid in linux using mdadm as we discussed earlier to configure raid 5 we need altleast three harddisks of same size here i have three harddisks of same size i. Simply boot on the cd, and choose rescue mode, then after the usual di prompt, you get. When you boot up the computer, you are going to see an option that allows you to configure the raid. I just post it here so i can understand the problem better. The example below shows how to create a software raid1 array on debian systems. Debian user forums view topic solved squeeze, grub2 and. Afterwards we must make sure that the grub2 bootloader is. This guide explains how to set up software raid1 on an already running debian etch system.
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. Debian squeeze on raid 0 and install grub2, andrey borzenkov, 20140702. There are many howtos available on the internet that describe several different schemes for utilizing linux software raid to provide mirroring of boot, root, and even other partitions. This guide explains how to set up software raid1 on an already running lvm system debian squeeze. Today i will share some thought on software raid under linux with you.
The mdadm utility can be used to create and manage storage arrays. I think i purchased it with rhel which may have needed the perc h700. The only thing i can imagine that caused it was my failed attempt to get a lxc fedora container to work. We definitely sell poweredge systems without an os and have for quite a while.
Debian installer for buffalo linkstation nas install. Does grub2 really support putting boot on a software raid5 partition. After stuck with this problem until midnight i just install them with software raid. Is grub installed to all the mbr of a raid array by default by the debian installer. How to configure software raid1 during installation process. Actually this works in debian squeeze and has for over a year. This guide explains how to set up software raid1 on an already running debian squeeze system. Set the usage for both partitions all 8 of them, in total to physical volume for raid. An ideal answer would link to a tutorial that explains how to move a boot partition on a non raid partition to a raid5 partition. In september 2010, the backports service became official, providing more recent versions of some software for the stable release. Automating debian preseed installs with raid and lvm. In our earlier articles, weve seen how to setup a raid 0 and raid 1 with minimum 2 number of disks. This document gives an example on how to setup a clean linux system which can boot directly from a software raid device.
Next, update the initramfs, so that the os has access to your new mdadm array at boot time. Use the following method only if you want to have a dual boot system with debian and the other operating system on the same serial ata raid. How to set up software raid1 on a running lvm system incl. The usual symptoms are that the boot will fail because the root file system cannot be mounted and you are dropped into a debug shell. Jun 24, 2005 in many cases hardware raid controllers are either too expensive or simply unavailablef or a particular system. Simply boot on the cd, and choose rescue mode, then after the. Grub2 has the ability to assemble raid arrays and read from them. Cant boot newly created mdadm software raid in debian linux squeeze. 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.
Partition the first with your favourite partitioning tool. Jan 17, 2011 acknowledgement sent to giuseppe sacco. 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. This has been possible through complex installation procedures in the past, but today the debian etch installer is capable of handling such an installation if you follow the proper steps, which i outline in this article. Software raid 5 in ubuntudebian with mdadm zack reed. Installing grub2 on mdadm software raid in debian wheezy. Nov 15, 2011 software raid 5 in ubuntu debian with mdadm 9 min read. Move the cursor to the install boot menu entry do not hit enter yet.
Raid 10 is a combine of raid 0 and raid 1 to form a raid 10. I installed grub and debian to an usb stick, since i was not aware one can actually boot from a raid, so this seemed like the best option. In this tutorial im using a debian squeeze system with two hard drives, devsda and. After 24 months of constant development, the debian project is proud to present its new stable version 6. Debian squeeze on raid 0 and install grub2, damien moity debian squeeze on raid 0 and install grub2, andrey borzenkov, 20140702. Here we will use both raid 0 and raid 1 to perform a raid 10 setup with minimum of 4 drives. Menu software raid on debian linux 14 january 2010 on hardware, filesystem, mdadm, monitoring, raid, linux. In the debian installer, partition each disk to have a 256mb partition and. Debian user forums view topic solved need raid help. Previous post how to setup software raid for centos next post how to. Although debian tries to ensure that your system stays bootable at all times, there is always a chance that you may experience problems rebooting your system after the upgrade. Debian includes edk2based vm firmware for arm64 in the qemuefi package. What you should do is install grub to the raid array, eg devmd0.
How to boot linux debian squeeze from software raid1. How to create raid arrays with mdadm on debian 9 digitalocean. Uefi bios shows a debian bootable disk but it wouldnt boot from it. To setup raid 10, we need at least 4 number of disks. Finally, update the initramfs again so that the early boot process. Grub2 configuration debian squeeze page 2 scan your webserver for malware with ispprotect now. Im setting up my desktop to use software raid 5 replacing a 250g and 500g home drive with 3 x 500g drives. We will learn how to configure software raid, how to examine raid devices, how to see the detail information about raid devices along with active components. I just accidentally just discovered that most of the links under devmapper are missing, though my system seems to be still functioning correctly. Jan 14, 2010 software raid on debian linux 14 january 2010 on hardware, filesystem, mdadm, monitoring, raid, linux. I have a working raid 5 array using mdadm under debian 6 squeeze.
This document contains installation instructions for the debian gnulinux 6. Thanks to debianinstallers rescue mode, its very easy to recover a problem. In many cases hardware raid controllers are either too expensive or simply unavailablef or a particular system. Debian squeeze on raid 0 and install grub2, damien moity, 20140702. Setting up raid on an existing debianubuntu installation. How do i install ubuntu 14 with uefi and software raid0 on gpt sdds. If you look at the result of the command df h and you are using the mdmadm software raid 1 then you can only see the devmdx partitions. I want to use grub2 as boot loader, but i read that is needed to be created a bios boot partition. Im running debian lenny testing which has an up to date kernel, etc. Disk partitions devhda1 and devhdc1 will be used as the members of the raid array md0, which will be mounted on the home partition. The stick has two partitions on it, an ext3 for and swap. I replaced the faulty disk and i booted the system from devsdb needed bios boot. It can even deal with lvm where the entire raid array is a volume group and boot is in a logical volume on the raid array. How to create a software raid1 array on your non boot.
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