There are some caveats when creating lvm snapshots on debian with udev, see 343671. Debian squeeze with raid 10 closed ask question asked 8 years. The following binary packages are built from this source package. Introduction the following text describes how to setup software raid 1 with lvm on linux. The examples below only provide basic information on the use of recipes. The procedure assumes that you have 2 indentical hard disks on your computer. All tools to manage an lvm volume are available in lvm2 package sudo aptget install lvm2. Yes this is true, and why this is a simple introduction rather than an indepth treatment of lvm. So far i only know it is logical volume management, but what does it really do i have tried to find an answer for days without success. 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 think the check in the kernel to stop it on invalid superblocks was introduced here. This means that we can use all disks inside the same volume group. Grub2 has the ability to assemble raid arrays and read from them. You can also use preseeding to set up partitions on software raid arrays. Automating debian preseed installs with raid and lvm. Now i have an uefi server, and the compatibility bios mode does not seem to work. Now that the lvm software is installed, it is time to prepare the devices for use in an lvm volume group and eventually into logical volumes. Just to make it clear, im kinda new to linux, especially debian, and all the raid stuff read enough to know that raid 10 is the way to go in my case. Raid 5 for your data storage is sensible, although raid 6 is better. On the other hand he could use btrfs as it has the software raid and lvm features included without additional software. Lvm setup in debian installer is quite simple and completely supported inside partman. The combination of linux software raid redundant array of inexpensive. Raid 1, basically means that the data is mirrored on multiple disks. That means, its not tested in our labs and not recommended, but its still used by experienced users.
Debian linux is a popular linux distribution and caters to end user workstations as well as network servers. Our team at linuxforce recently put together a debian server with lvm on a software raid5 volume. Disk partitions devhda1 and devhdc1 will be used as the members of the raid array md0, which will be mounted on the home partition. Debian is often praised for being a very stable linux distribution. This guide explains how to set up software raid1 on an already running lvm system debian lenny. This is lvm2, the rewrite of the linux logical volume manager. The combination of raid and lvm provides numerous features with few caveats compared to just using raid. Raid and lvm are both techniques to abstract the mounted volumes from their. Im having difficulty finding detailed instructions on how to do this. The debian project was founded in 1993 by ian murdock to be a truly free community project. Since then the project has grown to be one of the largest and most influential open source projects. I rarely partition each drive though, so i guess lvm won. How lv data blocks are placed onto pvs is determined by the raid level.
A simple introduction to working with lvm debian administration. I know there is another topic with the exact same title debian squeeze with raid 10, which didnt help though. Nov 11, 2017 lvm stands for logical volume manager. This page contains some screenshots to demonstrate it, and applies to debian 5. Other settings include mountpoint, mount options, and bootable flag. Now that the lvm software is installed, it is time to prepare the devices for use. So we completely redid our debian installer preseed files.
I just accidentally just discovered that most of the links under devmapper are missing, though my system seems to be still functioning correctly. This article gives a very detailed stepbystep guide on proper lvm configuration on debian 6. This raid array is a simple mirror array for redundancy purposes. It provides the ability to create partitions over several hard disks software raid, to resize partitions on the fly. Older versions of grub had problems with booting from lvm software raid. Appearently squeeze fails to set up grub2 to launch from the second disk when the first disk is removed, which seems to be quite an essential feature when running this kind of software raid1, isnt it. Manually creating a md device linux software raid array and. Install debian 8 on a lvm volume with type raid1 grub2 cant find volume group. The thing that confuses me is that the 2 disks sda. This document explains how to set up debian gnulinux on a computer with your root partition on a raid volume managed with lvm. Major improvements of the squeeze installer over the debian 5. The only thing i can imagine that caused it was my failed attempt to get a lxc fedora container to work. It is particularly useful for managing partitions used by the xen domains.
Lvm pv physical volume software raid vg volume group lv logical volume pe physical extent. All proxmox ve versions do not support linux software raid mdraid. Im using debian squeeze, and running lvm on top of software raid 1. In this example, we use virtual machine qemu or kvm. I have several systems with either hardware or software raid with hotswappable harddrives. Preseeding a debian squeeze install putting all volumes in lvm. Software means that raid redundant array of independent disks or redundant array of inexpensive disks is done in software instead of on a hardware disk controller. The symbolic links under devmapper have gone missing. Im trying to do a fresh install of debian squeeze on a server and set it up with raid 5, or raid 10 if possible 4 disks. Volumes created with tools from debian wheezy will most likely have. May 11, 2017 requirement before following this tutorial please create 4 disk for raid10.
Grub2 configuration debian squeeze how to set up software raid1 on a running system incl. Once you have reach debianinstaller partitioning screen. This article will provide an example of how to install and configure arch linux with a software raid or logical volume manager. Debians stability paired with the flexibility of lvm makes for a highly flexible storage solution that anyone can appreciate. Debian user forums view topic solved squeeze, grub2. Note that you have to be careful to get grub installed on both disks boot sectors if you are using software raid for a boot partition.
How to set up software raid1 on a running lvm system incl. At the moment, im lost whether this is a problem with grub2, with lvm or with the raid setup. If you want real safety you should use lvm on top of raid that will give you the benefits of stripingmirroring raid whilst still allowing you to create and remove partitions on the fly. Automating debian preseed installs with raid and lvm there are few problems i needed to address with debian preseeding to install onto multiple different machines testing my preseed in virtualbox lead to it pulling in half of x as it detected i needed virtualbox client extensions, when i wanted a clean small base install. What you should do is install grub to the raid array, eg devmd0. Home how to set up software raid1 on a running lvm system incl. Grub2 configuration debian squeeze how to set up software raid1 on a running lvm system incl. It came with a 250gb sata, so i added a second 250gb sata. Grub2 configuration debian squeeze page 4 scan your webserver for malware with ispprotect now. How to set up software raid1 on a running system incl. I tried the whole day long to setup up an lvm type raid1 volume on debian 8. It sits between the partitions and hard disk, and provides flexibility and power to partitions management. This can be done directly from the official etch dvd, without having to install the os on a classical partition and then move it to a lv residing on raid.
Grub configuration debian etch page 3 bring your team together with slack, the collaboration hub for work. Raid and lvm are both techniques to abstract the mounted volumes from their physical counterparts actual harddisk drives or partitions thereof. Lilo are not compatible with lvm, so boot should be outside the storage disk managed by lvm. Lvm supports enterprise level volume management of disk and disk subsystems by grouping arbitrary disks into volume groups. 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. In some case it makes sense to install proxmox ve on top of a running debian squeeze 64bit, especially if you want a custom partition layout. Centos 7 with software raid 1 and lvm for root and swap. After this, you will be presented with a detailed overview of your new partition. Emidio planamentes homepage linux root on lvm on software. Install debian 8 on a lvm volume with type raid1 grub2.
Im looking for advice on how to diagnose and fix this if necessary. I used to install my servers with lvm over software raid1, and grub install on the mbr of both drives. Browse other questions tagged debian lvm raid5 or ask. Apr 12, 2011 hi, im using lvm on top of software raid 1 on debian squeeze. The components have been grouped into stages that should be recognizable for users. One of the problems with the old machine was that the disk drive used to store our backups wasnt in a raid of any kind, which turned out to be. On some level, everything just works, so is the check necessary on lvm logical volumes with type raid. Anders, i prefer lvm on hardware raid but this little nas box didnt support hw raid. Manual partitioning for encrypted lvm setup is blocked. Grub2 configuration debian squeeze page 2 scan your webserver for malware with ispprotect now. This howto briefly describes how to install debian etch on lvm2 on software raid 1. Put lvm on top of the raid 6 md device, and create a volume group just for that phyisical volume. I would turn that off and go with a software type of raid 10.
This guide explains how to set up software raid1 on an already running lvm system debian etch. They are presented in the order they appear during the install. Over three thousand volunteers from all over the world work together to create and maintain debian software. Actually this works in debian squeeze and has for over a year. Were using a virtual box disk in this demo version. May 16, 20 lvm sobre raid1 debian squeeze duration. Besides supporting more hardware, the debian installer can now also be used to install a system based upon the freebsd kernel. Debian squeeze comes with grub2, which has the ability to boot linux from an lvm volume. Im hoping that someone could help me out with instructions on setting up raid on a linux box.
This package automatically configures mdadm to assemble arrays during the system startup process. Install debian 8 on a lvm volume with type raid1 grub2 cant. The example below shows how to create a software raid1 array on debian systems. This guide explains how to set up software raid1 on an already running lvm system debian squeeze. Debian user forums view topic solved squeeze, grub2 and. 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.
Today we are showing you how to install debian with kvm virtualization and lvm support. Lvm volume group or md software raid array created under older. Howto install debian with kvm and lvm raid1 youtube. In september 2010, the backports service became official, providing more recent versions of some software for the stable release. That way you have a better chance of recovery from another source. Automating debian preseed installs with raid and lvm there are few problems i needed to address with debian preseeding to install onto multiple different machines testing my preseed in virtualbox lead to it pulling in half of x as it detected i needed virtualbox client. This document gives an example on how to setup a clean linux system which can boot directly from a software raid device.