The motherboard used for this example has an intel software raid chipset, so the intel metadata. On freebsd the raid0 driver is provided by the geom subsystem and is referred to as disk striping. Until freebsd version 7x the os ignored did not report the error. Raid which stands for redundant array of inexpensive disks is a method for combining multiple partitions on different disks into one large virtual device, also known as a raid array. Raid1 mirror on freenas boot disk bbbbbbbbloggggggg. That said, linux software raid is more robust and better supported and thus, recommended over fakeraid if you do not need to dual boot with windows. Uefi should be able to boot whatever disk hasnt failed, and grubinstall will write to the raid mounted at bootefi. Does grub2 really support putting boot on a software raid5 partition. The freebsd diary implementing hardware raid on freebsd. With software raid, you can read the data on any machine that will boot freebsd. Be sure to make a note of whats currently in your fstab file, in case you need to change it back. Mirrors are usually used to guard against data loss due to drive failure.
My problems is the second disk cannot the unix and linux forums. Raid1 mirroring is a popular approach to protect the system from a harddisk failure. Unlike dd or win32 disk imager, this article will guide you how to create freebsd bootable usb from windows without data loss. Installing freebsd with gmirror software raid 1 and the gpt partitioning scheme rizza march 24th, 2014. Freebsd supports a wide variety of hardware raid controllers from many popular manufacturers such as adaptec, 3ware, mylex, dpt, ami, dell, hp, ibm, and more. Im using an alternate installation cd in order to configure a software raid from which to boot. Oct 26, 2017 that said, linux software raid is more robust and better supported and thus, recommended over fakeraid if you do not need to dual boot with windows. In these situations, i always use linuxs md raid1 for the root filesystem andor boot. This is almost correct, except that the raid 1 kernel extension expects the raid superblocks to be different. From what ive been reading, it looks like linux cant boot from a software raid 5 array.
Some motherboards and expansion cards add some simple hardware, usually just a rom, that allows the computer to boot from a raid array. If you want the best possible performance, give up on the idea of using software raid. Although for legal reasons freebsd cannot use the unix trademark, it is a direct. The usual hardware solution is to buy a raid disk controller like the popular 3ware ata raid controllers and then not having to deal with any software incompatibilities because the system just sees one large physical disk. Using an oncard bios, the card controls most of the disk operations itself. The list of supported adapters is growing all the time, so make sure to check the release notes for complete information. Create zfs datasets specifically for a freebsd system.
Zfs boot has been supported for a year or more now. There is a small bit of preparation work to do prior to installing, which is the bulk of this entry, most of which is based on this article. I have the following configuration as fdisk l reports. Freebsd find out all installed hard disk size information nixcraft. Virtual raid devices on hardware controllers will show up in the partitions on local disks module for partitioning, just like any real hard disk would. At this point the raid module built into the kernel will try to assemble your raid1 array using a nonexistant drive and your secondary, or mirror, drive. Jun 24, 2008 on this system, freebsd is already installed. The following is a practical guide to setting up software raid0 on freebsd using the geom subsystem. Adding raid1 to an existing freebsd 7 installation. I spent some time yesterday building out a uefi server that didnt have onboard hardware raid for its system drives. Aug 17, 20 using raid 1 mirror on boot disk is a good choice to reduce such kind of impact, and usually can be done through hardware raid card. If you dont know youre devices name, simply use dmesg or df h command to find out. It is, however, useful to tell the operating system to load it whenever you boot.
This wiki describes how to get linux to see the raid as one disk and boot from it in the same way that windows will install on this type of device. For the installation of freebsd you need the following software on your system. How to setup disk partitions, labels and software raid on freebsd systems. Thus, when you try to reactivate raid, the software will notice the problem, and deactivate one of the two partitions. Note that you still will encounter drive dropouts even with some highend hardware raid controllers. This is how freebsd will access your hdd, not directly, but through the mirror. Hi all, i m just trying using software raid in rhel 4, without problem, then i wanna simulate if disk 1 is fail thereis an bootloader, i plug off my 1st disk. Freebsd check the health of adaptec raid array nixcraft. The freebsd installation tool sysinstall causes some problems, so we recommend that. Recover data from freebsd software raid1 solutions. After booting, access to the raid array is handled by software running on the. A redundant array of inexpensive disks raid allows high levels of storage reliability. This tutorial assume both your hard disk are da0 and da1. That is a great convenience compared to searching ebay for an obsolete controller with the proper rev level.
Its not yet part of the standard freebsd installer sysinstall, but there are several howtos available online including one here in our how to forum for installing manually onto a zfs pool. The easiest way to find out detected hardware information under freebsd is go through varrundmesg. I was able to detect the problem with zpool status. After having been bitten by my pcix sata raid controller only working in few system because it sticks out too far, i realized that using software raid may be a better way to go, due to its hardware independence. Solved unable to boot from disk the freebsd forums. Now shutdown and try booting off the newly created partitions, either by changing the boot disk in the bios, using the freebsd boot manager on. After booting, access to the raid array is handled by software running on the computers main processor. This is almost correct, except that the raid1 kernel extension expects the raid superblocks to be different. I am using four 2 tb drives sdfsdi to create three raid 1 devices. My experience with software raid has been that its slower than hardware raid. Jun 24, 2005 in many cases hardware raid controllers are either too expensive or simply unavailablef or a particular system. It turned out there was a problem with communication between the router and freebsd systems. Dont blindly accuse your freebsd cdroms of not being bootable. This worked well for bios booting since bios just transfers control blindly to the mbr of whatever disk it sees modulo finding a bootable partition flag, etc, etc.
My goal is to add the adaptec 2400a to polo, create a raid5 array, and migrate the data from the 2x80gb drives to 4x80gb drives. If freebsd will boot but not pfsense, try booting from a freebsd live cd and. Nano text editor ee is the default text editor in freebsd bourne again shell if you want to make the transition from linux to freebsd more smooth bash completion needed to autocomplete commands typed in console using. My goal is to add the adaptec 2400a to polo, create a raid 5 array, and migrate the data from the 2x80gb drives to 4x80gb drives. My problem was that hdds of my zfs raid partly degraded and partly destroyed after a lightning. While booting, freebsd detects the array properly and sees. Freebsd sometimes gets blamed for something of which its innocent. It looks like currently most os installers insist on putting boot on a nonraid partition or the kind of raid1 partition that looks like a nonraid partition, even the installers that support raid5 and grub2 im guessing this limitation is a historical relic leftover from grub1. All my personal data backup using the following hardware. In linux freebsd, you simply use the ossupplied software raid which can be zfs. This is an article on how we can configure raid 1 on freebsd i have done the os installation with raid 1 on freebsd 11. I have moved my hard discs with a working debian stable system on it from a computer which had hardware problems to a new, similar one.
The following is a brief setup description using a promise ide raid controller. I have written previously about swapping boot disks. Then boot from the live cd, mount the hdd, and find the file. Usually, one sets up gmirror when installing the base system. Nov 23, 2010 im going to show you on how to setup the software raid for freebsd. Hardware troubleshooting boot issues pfsense documentation. I am trying to set up an instance of ubuntu desktop 12. I want to install freebsd9 with a softraid mirrored option, but i want to make sure that i do not loose the information of the existing two drives that were mirrored via softraid while adding two more drives to. On the raid card bios i already configured 2 hard disk to be on raid 1. The first one is currently empty, so just echo over the required line. Feb 15, 2010 it relies on windowsdrivers to do the raid part.
Take out the raid card, and connect the cables to the onboard controller, and do the flowing. Does grub2 really support putting boot on a software raid1 partition with 1. My hope is that if i get the offset right, the mount. First, avoid any problem by getting two identical hard drive or at least, same size and speed at least if not from same. 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. This fails, though, since it expects a single disk, not a raid set. Freebsds poor samba performance is a real problem because users like to benchmark.
Once inside the shell here are the commands to setup gpt. Its not yet part of the standard freebsd installer sysinstall, but there are several howtos available online including one here in our how to forum for installing manually onto a. Jun 26, 2009 ive adaptec raid 1 set via 5405 pci card. The network team tracked down the issue and the matter is resolved.
Enabling smart array software raid the embedded sata ports may be configured in ahci mode or software raid mode. Im going to show you on how to setup the software raid for freebsd. Ive been running freebsd for a while now, and finally want to venture into using raid with freebsd. I know how to get check the health of adaptec raid array under linux, but how do i find information about my raid card, raid status, disk failure and other information via command line. By recreating the superblock, you should have a fully usable system. Installing freebsd with gmirror software raid 1 and the gpt partitioning scheme step 1. Only software raid on linuxbsd would escape the tlertax.
Instead of mounting devad6 at the next boot, we want to mount devmirrorgm0. I would like to have the old system running on the new computer, but im having problems with software raid. Apr 19, 2018 now we have a visible fat32 filesystem on the esp. This is the file that contains the info about what partitions are mounted at boot. But the real question is whether you should use a hardware raid solution or a software raid solution. I have my boot code on a cf card, and everything else aka, the boot directory on zfs.
This presents a major performance issue when using a raid array or 4k. Netgate is offering covid19 aid for pfsense software users, learn more. Freebsd software raid howto how to setup disk partitions, labels and software raid on freebsd systems. Zfs seems to be really reliable and i in my case was able to recover the raid fully. Here comes steps, assume boot disk is sata devada0 and mirror disk is sata devada1. First, lets temporary disable the security feature that indicate the primary disk is. Vinum doesnt really boot off striped or concatenated sets, but it does boot off of raid1. Jul 07, 2009 i have been successfully using linux and freebsd software raid for several years for backing up my own data. First, avoid any problem by getting two identical hard drive or at least, same size and speed at least if not from same manufacturer. Software raid devices often have a menu that can be entered by pressing special keys when the computer is booting. A raid can be deployed using both software and hardware. It is used to improve disk io performance and reliability of your server or workstation.
Luckily, freenas is based on freebsd that provides super easy way to setup a software raid manually. The problem i see is that while i can find very affordable and good options they do not provide hardware raid or even if they do it is not the best hardware for freebsd. Only softwareraid on linuxbsd would escape the tlertax. In the five years since then, ive learned a great deal more about freebsd. Installing freebsd with gmirror software raid 1 and the. To remap the boot drive to a different device, reboot the machine into single user mode, then edit your etcfstab using vi 1. My understanding is that grub1 doesnt know anything about raid and so cant boot off any kind of raid array. This may appear to be written as an aidememoir however it is a realworking example written by the author actually configuring a real system. You can use g4u boot disk to make exact image copy from the disk. However, i havent seen this issue raised in any recent howtos just on old ones. The menu can be used to create and delete raid arrays. In linuxfreebsd, you simply use the ossupplied software raid which can be zfs.
This makes sense when you stop and think about the fact that software is another layer the data has to go through a layer that requires cpu cycles. I have to made a decision on choosing a dedicated server. Freebsd also supports a variety of hardware raid controllers. If you want to setup a software raid, you can skip this step. Dec 15, 2011 openbsd includes a software raid implementation which supports booting in newer snapshots, and i was itching to install the latest version and use it as my file server, which has 4 750gb disks. I just upgraded from a twoyear old installation to 11. You must be insoftware raid mode to use the smart array s100i sr gen10 sw raid solution on the embedded sataports. Create freebsd bootable usb from windows without data loss. Find answers to recover data from freebsd software raid1 from the expert community at experts exchange.
Raid redundant array of inexpensive disks or drives, or redundant array of independent disks is a data storage virtualization technology that combines multiple physical disk drive components into one or more logical units for the purposes of data redundancy, performance improvement, or both. Openbsd supports raid 0, 1 and 5 via its software implementation, named softraid. Vinum doesnt really boot off striped or concatenated sets, but it does boot off of. To fix it, boot from a freebsd installation media and choose shell at the first prompt.
These devices control a raid subsystem without the need for freebsd specific software to manage the array. This was in contrast to the previous concept of highly reliable mainframe disk drives. 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. A problem with hw raid is that if the controller breaks, you need to get an identical controller to replace it, or the data will be lost. Then load the mirror module and mount the mirror device. You can create a single filesystem that is as big as all your existing hard disks, instead of needing to mount each one separately at a different mount point directory.
Samba corrupts files writing to fat32 drive bug kern39043 existing since june 2002 no stable software raid 5 support. So the freebsd settings were all okay, but the routergateway was communicating in a way freebsd did not understand. Satassd ata direct access device driver disk names starts with. I could use some help in figuring out what steps i need to take to solve a problem. In every case where i experienced this issue, it was on a hardware raid. I want to add a raid 5 array to my freebsd server, and cant exactly afford a hardware controller at the moment. These devices control a raid subsystem without the need for freebsd specific software to manage the array using an oncard bios, the card controls most of the disk operations itself. First of all we need to familiarize how the disks are named in the os. If your system has a separate hardware raid controller card or external array, you will need special software to set it up.
The freebsd diary adding gmirror to an existing installation. The software raid process in freebsd is a lot simpler compared to the previous centos, debian, or ubuntu software raid. Each drive in a mirror contains an identical copy of the data. Freebsd is a free and opensource unixlike operating system descended from research unix via the berkeley software distribution bsd. Learn about freebsd physical hard disk naming conventions and command to.
While booting, freebsd detects the array properly and sees it as one freebsd 6. Openbsd includes a software raid implementation which supports booting in newer snapshots, and i was itching to install the latest version and use it as my file server, which has 4 750gb disks. Normally in freebsd, each disk will be named as ada0 and ada1 respectively. Prevent debian from hindering boot if a softwareraid problem exists. Bite the bullet and invest in a good raid card and good drives to go with it. In order to ease the job managing the system from command line you should install the following packages.
Its a hardware raid array, specifically, lsi logic megaraid sata controller. I prefer to use software raid to save money and to avoid vendor lock ins. If a boot drive fails, the system has to be sophisticated enough to be able to boot from the remaining drive or drives. Solved hp proliant dl380 gen 10 installing problem. To avoid problems with those special characters, arrays are given simple. The new ui doesnt show me any of my jails though, and thats a big deal for someone whos not especially freebsd literate it took me like a week to get my apache webserver going last year, please dont make me do this again. However, during or after installation, there is no option in the menu to create software raid for boot disk. Freebsd begins process to support secure boot blog freebsd efi bootloader refactor howto freebsd uefi root on zfs and windows dual boot. However, when booted to freebsd and using atacontrol, i found only 1 drive connected and the raid was. 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. Hello, i installed ubuntu desktop just recently in aim to create a raid1 configuration using software raid mdadm. I have done the os installation with raid 1 on freebsd 11. We need to make sure that the boot loader is installed to the new mirror. In fact, it returns nothing, and tries to run efibootmgr with an empty d argument.
Installing freebsd with gmirror software raid 1 and. Raid 1 mirroring is a popular approach to protect the system from a harddisk failure. 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. Netbsd supports raid 0, 1, 4, and 5 via its software implementation, named raidframe. Raid1, or mirroring, is the technique of writing the same data to more than one disk drive.
21 1401 1667 771 619 5 248 1303 1114 1496 536 794 1548 1341 933 782 1399 559 640 787 915 1299 1038 1250 169 244 1218 1582 862 253 677 270 384 790 596 1439 1379 776 610 762 936 741 1476 1496 344 578 247 344 60 1149