Tweaking, tuning and troubleshooting linux raid wiki. So grub probe worked correctly to detect the modules necessary to include in core. Jan 14, 2010 software raid on debian linux 14 january 2010 on hardware, filesystem, mdadm, monitoring, raid, linux. Does grub2 support putting boot on a raid5 partition. How to configure software raid1 during installation process. This guide explains how to set up software raid1 on an already running debian squeeze system.
In addition to loading the linux kernel, it implements the multiboot standard, which allows for flexible loading of multiple boot images needed for. Here we also discussed the debian vs arch key differences with infographics. I was installing grub2 to a usb stick which had a gpt partition table and no linux partitions. 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. Reading around i found that debian is able to boot from raid 1.
Setting up raid on an existing debianubuntu installation. Btrfs is probably the most modern filesystem of all widely used filesystems on linux. When asked to install bootloader, install to first device. So if you put this partition on the raid array, and that is the part that is used to read teh raid array. Debian provides both grub v1 and v2 more on debian bootloader. The package is severely out of date with respect to the debian policy. Grub2 is dropping to a rescue shell complaining that no. Installing grub2 with boot on software raid, wesley pa4wdh, 20703. Grub v1 is the main 1 default bootloader on x86 platforms upto debianlenny. Launch bootrepair, then click the recommended repair.
My goal here is to be able to have a bootable, running system in the event of a disk failure. Fortunately reinstalling the grub bootloader is rather straightforward, and quick. Usually the windows installation does not take care of our debian system booting process, overwriting the master boot record with windows. Patches are available, the bug reports will be tagged as blocking for this metabug, and are. Apr 28, 2010 howto reinstall grub in rescue mode while using lvm mdadm this article is how to activate lvm and mdadm software raid in rescue and reinstall grub boot loader, since the boot cd will not do this job for you. If the kernel panics because it can not mount the root drive, then the cause is almost certainly that your kernel is missing the mddegradedboot patch see section 4. I am running a 14 disk raid 6 on mdadm behind 2 lsi sas2008s in jbod mode no hw raid on debian 7 in bios legacy mode. Blocklist fallout cleanup this was one cause of a build failure on hurdi386, though may not be the only one. I am attempting to install debian using the software raid raid 1. Amd does not take any responsibility for this patch. Grub fails to install debian wheezy with mdadm raid1 and.
Up to know i spent several hours and collect only failures. Today some of the original raid levels namely level 2 and 3 are only used in very specialized systems and in fact not even supported by the linux software raid drivers. I recently has to something similar on my debian system, but it ought to apply for ubuntu as well. Today i will share some thought on software raid under linux with you. The following sections describe how to do this for the grub.
How to recover grub debian sarge after reinstalling windows. Maybe you could also create a raid 1 array with superblock at the end and use it as the efi system partition. After first boot, consider executing dpkgreconfigure grub pc or dpkgreconfigure grub efiamd64 on efi systems, and install to all devices. How do i install grub on a raid system installation. I too run raid1 on all my debian systems so ill add comments from my experience. Im running debian lenny testing which has an up to date kernel, etc.
Be aware that grub will not complain and no errors will be. The second part, is i suspect theyve patched grub to allow the newer. The raid devices are up and running, and can be checked looking at procmdstat and using mdadm command. Debian vs arch 12 most valuable differences you should know. The package should be updated to follow the last version of debian policy standardsversion 4. According to gentoo linux x86 with software raid and lvm2 quick. My install on a intel d865perl mother board got interesting. With these patches applied i can install and boot debian wheezy without any trouble on an intel matrix raid raid1 array even when combined with lvm. Installing debian with sata based raid linux howtos. Grub2 has the ability to assemble raid arrays and read from them. 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. Instalando grub no debian gnulinux com raid 1 blog. Debian squeeze on raid 0 and install grub2, damien moity, 20140702. Read also the contents of the file license for permissions and liability.
But when you sit down, you run into this seemingly unsolvable problem you just cant seem to wrap your head around, even though it should be. What is held in this area is the stuff needed to read things like lvm and raid. Before setting up grub, the resync of the raid devices must be completed, otherwise the procedure may work incorrectly, resulting in a system that would not boot at all. Im setting up my desktop to use software raid 5 replacing a 250g and 500g home drive with 3 x 500g drives.
Installing grub2 with boot on software raid, andrey borzenkov, 20701. First of all, boot the machine up and get access to the root partition. My guess is that it all depends on the type of raid. These have shown up in a number of desktopworkstation motherboards and lowerend servers such as the hp dl360 g5, if ordered without the optional raid card. Apr 28, 20 having the lvm in a different raid device is the most important part i guess. Provide out of the box support for bios software raid fakeraid in ubuntu intrepid. Hi people,i am trying to install debian lenny betta2 on a system that has the built in promise chip for raid 0 but when i finished the install and then i reboot,i get grub loading, the unix and linux forums. As far as i understand the guide gentoo linux x86 with software raid and lvm2 quick install guide does not use grub2 and i think i do not need lvm2. Boot your pc from the installer medium, and select advanced options by navigating to it with the arrow keys, then press enter. Zulgurub was a 20man raid instance located in northeastern stranglethorn vale, released in patch 1. I cant help with installing grub now but what i did to get my raid running is i followed this instruction. Another level, linear has emerged, and especially raid level 0 is often combined with raid level 1. Browse other questions tagged debian grub raid mdadm gpt or ask your own question. 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.
All you need is your original debian install cd, dvd or usb pendrive. Prevent debian from hindering boot if a software raid problem exists. I tried to add modulesext2 raid mdraid ntfs to make sure it has all the drivers. This has been a guide to the top difference between debian vs arch. Get the kernel you plan on running, get the raidpatches and the tools, and make your. I have added support for installing on mdraid based intel matrix raid to the debianinstaller, the lvm2 package, and mdadm. Uefi should be able to boot whatever disk hasnt failed, and grub install will write to the raid mounted at bootefi. You may not be required to do so, but proceed at your own risk. In this article we explain how to use btrfs as the only filesystem on a server machine, and how that enables some sweet capabilities, like very resilient raid 1, flexible adding or replacing. Reinstalling the grub boot loader the tao of debian. Modular raid on debian gnulinux after move to raid. 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. Grub is the grand unified bootloader, a very powerful newish bootloader that can be used to boot most operating system on the intel platforms. This guide explains how to set up software raid1 on an already running debian etch system.
The raid patch, the raidtools package, and the kernel should all match as close as possible. My goal is to prepare a patch for source package grub2 that will. Grub fails to install debian wheezy with mdadm raid1 and gpt partition table. 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. I chose this setup during ubuntu install and it worked quite fine, until some latest updates that apparently included kernel update or. Or use grub install with efidirectory and bootloader to install a copy of grub wherever you want and add an efi boot entry for it. I have added support for installing on mdraid based intel matrix raid to the debian installer, the lvm2 package, and mdadm. For detailed information see the files partmanautorecipe. This will be helpful when one hdd fails theres still a working grub. In the world of software raid, this is a brand new neverseenbefore feature.
Is this a limitation of grub2, or of the os installers. Grub2 configuration debian squeeze this guide explains how to set up software raid1 on a. How to set up software raid1 on a running system incl. Oct 04, 20 how to configure software raid1 during installation process by milosz galazka on october 4, 20 and tagged with debian, system installation, system management, software raid recently i needed to setup software raid1 during debian installation process. It is clear although that novice can head with debian and after years of experience in linux, you can head with the arch as it offers options for customization is multiple ways.
Then install bootrepair in it, either via ppa for ubuntumint, or debs for debian. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. In the last few years, a number of hardware products have come onto the market claiming to be ide or sata raid controllers. Fixing an unbootable computer after a failed grub installation can be a bit tricky. Grub2 configuration debian squeeze how to set up software raid1 on a running system incl. I suppose you could write a patch to grub to incorporate raid 5 and have it installed on the mbr of all the disks. Aug 15, 2005 recently my hard disk went bad some bad sectors developed, my i windows xp boot file corrupted. At this point the raid module built into the kernel will try to assemble your raid 1 array using a nonexistant drive and your secondary, or mirror, drive. Like zulfarrak, it counts as an outdoors zone, and riding on mounts is possible. Installing grub2 with boot on software raid, wesley pa4wdh, 20706.
Adblock detected my website is made possible by displaying online advertisements to my continue reading restore debian linux grub boot loader. The other esps must be taken care of by hand, which is boring and errorprone. Disable recordfail on nonwritable lvm or raid partitions. Actually this works in debian squeeze and has for over a year. The examples below only provide basic information on the use of recipes. Grand unified bootloader legacy version grub is a gpled bootloader intended to unify bootloading across x86 operating systems. Jun 24, 2005 in my testing, lilo absolutely refused to be installed on a raid 1 array.
In addition to writing the gparted live image to cd and to usb media, the gparted live image can also be placed on a hard disk drive. My understanding is that grub1 doesnt know anything about raid and so cant boot off any kind of raid array except for raid arrays that look like a non raid array. This version of grub is based on a cleaner design than its predecessors, and provides the following new features. Inofficial patches for amd raid linux kernel modules rcraid. This will bring me to the grub menu, and the system boots. Croatian czech dutch english estonian finnish french german greek hindi italian japanese korean norwegian portuguese romanian russian slovak spanish swedish telugu turkish ukrainian vietnamese. To get back our grub first stage boot, here a procedure you can use. If another ubuntulinux distribution controlled the boot process, it will be replaced by the grub 2 settings in the new installation. Many debian newbies often have to reinstall windows on the same machine on where debian is installed. Ive heard rumors that grub2 is able to support boot on raid 0, raid 1 or raid 5, metadata 0. Installing grub2 with boot on software raid, wesley pa4wdh, 20705.
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 have installed grub to both sda, sdb and md1, and tried dpkgreconfigure grub pc and dpkgreconfigure mdadm, as well as update grub. Or use grub install with removable and efidirectory for each disk. Ive been running two disks in a raid 1 configuration, with grub installed on both disks, for some time. Debian squeeze on raid 0 and install grub2, andrey borzenkov, 20140702.
Zulgurub is the capital of the jungle troll tribes, led by the gurubashi, worshippers of the terrible god, hakkar the soulflayer, who personally inhabits a temple in the deepest parts of the city. Installing grub2 on mdadm software raid in debian wheezy. Installing grub2 on mdadm software raid in debian wheezyjessie principle. So in order to have ebough space for grub, you need to create a small partition for the rest of this information. I hope someday you understand that my method is superior than that you did, because my method makes windows default stubbornly even after you add some kernel andor memtest and so on. In testing i have found that it is important to reboot using the installation cd. Debian squeeze on raid 0 and install grub2, damien moity debian squeeze on raid 0 and install grub2, andrey borzenkov, 20140702. Get a debian installation cd for the same architecture i. Reinstalling grub makes sure it now is going to look at devmd127 for grub info, 7 reboot and when it works, add the other disk to the raid array and install grub to the other disk. What you should do is install grub to the raid array, eg devmd0. In this howto the word raid means linux software raid. The grub 2 files will normally be located in the boot grub and etc grub. Our team at linuxforce recently put together a debian server with lvm on a software raid5 volume. Youve got a box of new hardware and you cant wait to assemble everything to build the greatest server ever tm.
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