General :: Access Each Drive Of A RAID Array In Order To Update The Firmware?
Feb 2, 2011
I need to access each drive of a RAID array in order to update the firmware - I am completely new to linux. I think there are probably some potential challanges along the way to get this "working" For example, it seems to me that the array may present itself to application code as a single device. I need to drill down into the RAID and talk to each physical device in turn via some sort of pass-through mechanism. I'm currently pretty lost - can anyone point me in the "right" direction
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Aug 3, 2010
We ran out of space on our server hard drive, so I installed 2 x 1GB drives, set them up as a software RAID1 array, copied the contents of /home to it, mounted it as /home for testing. Everything OK, so I unmounted it, deleted the contents of the /home folders (don't worry, we're backed up), then remounted the array. Everything was fine until we rebooted. Now I can't access the array at all; during booting the error "mount: special device /dev/md1 does not exist" comes up twice, and manually trying toe same issue. The relevant line from fstab reads:
/dev/md1 /home ext3 defaults 0 0
However, using webmin shows only md0, the RAID0 device on which the OSD was originally installed. There is no /dev/md1 device file. The mdadm.conf file reads as follows:
# mdadm.conf written out by anaconda
DEVICE partitions
MAILADDR root
ARRAY /dev/md0 level=raid0 num-devices=2 uuid=76fd4050:fb820568:c9bd3a59:ad3e70b0
So it's not listed; I'm assuming this is significant. Am I right, and whether I am or not, what can I do?
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Jan 6, 2011
1st I am relatively new to linux (but not to *nix). I have 4 disks assembled in the following intel ahci bios fake raid arrays:
2x320GB RAID1 - used for operating systems md126
2x1TB RAID1 - used for data md125
I have used the raid of size 320GB to install my operating system and the second raid I didn't even select during the installation of Fedora 14. After successful partitioning and installation of Fedora, I tried to make the second array available, it was possible to make it visible in linux with mdadm --assembe --scan , after that I created one maximum size partition and 1 maximum size ext4 filesystem in it. Mounted, and used it. After restart - a few I/O errors during boot regarding md125 + inability to mount the filesystem on it and dropped into repair shell. I commented the filesystem in fstab and it booted. To my surprise, the array was marked as "auto read only":
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and the partition in it was not available as device special file in /dev:
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Mar 20, 2011
I've installed Debian Squeeze on my server several days ago. During install process installer asked me to provide USB flash drive with firmware aic94xx-seq.fw. All went fine. Today I installed all updates to my system with "U" in aptitude. Aptitude installed kernel update 2.6.32-5 and created initrd accordingly. But now I can't boot up my system because it can't find LVM volumes on harddrive connected to Adaptec RAID card. How can I boot my system now? I have USB with firmware.
I have netboot CD. Unfortunately when I tried to edit boot records in grub I found that there is no my old kernel anymore. The only kernel grub sees is the new vmlinuz kernel and new initrd How take make my server alive?
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Jun 7, 2011
I have 4 WD10EARS drives running in a RAID 5 array using MDADM.Yesterday my OS Drive failed. I have replaced this and installed a fresh copy of Ubuntu 11.04 on it. then installed MDADM, and rebooted the machine, hoping that it would automatically rebuild the array.It hasnt, when i look at the array using Disk Utility, it says that the array is not running. If i try to start the array it says :Error assembling array: mdadm exited with exit code 1: mdadm: failed to RUN_ARRAY /dev/md0: Input/output error
mdadm: Not enough devices to start the array.I have tried MDADM --assemble --scan and it gives this output:mdadm: /dev/md0 assembled from 2 drives - not enough to start the array.I know that there are 4 drives present as they are all showing, but it is only using 2 of them.I also ran MDADM -- detail /dev.md0 which gave:
root@warren-P5K-E:~# mdadm --detail /dev/md0
/dev/md0:
Version : 0.90
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Feb 8, 2011
i have a fedora 11 server which can't access the ext4 partitions on lvm logical volumes on a raid array during boot-up. the problem manifested itself after a failed preupgrade to fedora 12; however, i think the attempt at upgrading to fc12 might not have anything to do with the problem, since i last rebooted the server over 250 days ago (sometime soon after the last fedora 11 kernel update). prior to the last reboot, i had successfully rebooted many times (usually after kernel updates) without any problems. i'm pretty sure the fc12 upgrade attempt didn't touch any of the existing files, since it hung on the dependency checking of the fc12 packages. when i try to reboot into my existing fedora 11 installation, though, i get the following screen: (click for full size) a description of the server filesystem (partitions may be different sizes now due to the growing of logical volumes):
Code:
- 250GB system drive
250MB/dev/sdh1/bootext3
lvm partition rest of driveVolGroup_System
10240VolGroup_System-LogVol_root/ext4
[code]....
except he's talking about fake raid and dmraid, whereas my raid is linux software raid using mdadm. this machine is a headless server which acts as my home file, mail, and web server. it also runs mythtv with four hd tuners. i connect remotely to the server using nx or vnc to run applications directly on the server. i also run an xp professional desktop in a qemu virtual machine on the server for times when i need to use windows. so needless to say, it's a major inconvenience to have the machine down.
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Jul 4, 2010
I can't my system because of this error: Code: linux-firmware: /lib/firmware/radeon/R700_rlc.bin exists in filesystem Note that in the beginning, it asks:
Code: :: Replace kernel26-firmware with core/linux-firmware? [Y/n] There are so many updates by now that the list fills in a few pages in the terminal! Also, I wonder why so many Arch updates get stuck or broken compared to almost any other distro? Is it poorly designed packages? Is it a design flaw in pacman/the package format?
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Sep 27, 2010
I have a NETGEAR ReadyNAS NV+ with four 1TB drives in a RAID-5 array. This is our primary file storage. This has previously been backed up to a hardware RAID-0 array directly attached to our Windows server. The capacity of this backup array is no longer sufficient. So the plan was, take a bunch of 200GB to 320GB drives (And a 750) I had kicking around, chuck them in a couple of old SCSI drive enclosures I have collecting dust, attach them via IDA/SATA-to-USB adaptors to a USB hub, attach that to the server, create a JBOD array spanning the disks, and back up the NAS to that. Performance is not an issue as this is just to be used for backup, with the idea being as near to zero cost as possible (Spend so far = NZ$100�ish).
The first hurdle I struck was Windows not supporting Dynamic Disks on USB drives (Required to create a spanned volume). At first I resisted using another machine (i.e. a machine running Ubuntu) as I didn't want to dedicate a piece of hardware to backing up the NAS. I then decided it would be acceptable to do this via a VM, which is what I've done.So I have 10.04 running under VMWare Server 2.0.2 under Windows Server 2008 R2. The disks are all presented to the VM. I wasn't sure if I was going to end up creating the array under LVM or something else, but I noticed Disk Utility has an option to create an array, so I tried that. When I add two 250GB drives, the array size is 500GB. When I then add a 160GB drive, the array size drops to 480GB. Huh? If I keep adding disks (Regardless of order) the final array size comes out at 1.8 TB, as per the attached screenshot. Now with the following drives, I expected something more like:
160 + 250 + 250+ 750 + 250 +200 + 200 + 250 + 320 + 250 + 320 = 3.2TB
Am I missing something or making a false assumption somewhere?
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Feb 3, 2011
i am trying to increase raid1 arraysize whcih is predefind,what i did i add two more drive in the raid but i could not increase raid array
exp:-
Creation Time : Wed Feb 2 18:14:56 2011
Raid Level : raid1
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Aug 14, 2010
I'm running a Debian homeserver, with a 3-disk (1GB each) raid 5 array using mdadm (the OS is on a separate disk).Now, smartmontools noticed some bad sectors on one of the disks, and I'm not sure what to do next (except for backup of valuable data).I found some articles on how to fix these sectors, but I'm unaware what the result on the whole array will be.
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Feb 23, 2010
I'm renting a dedicated server with a company that claims that the server has 2 hard drives in a software RAID 1 array, but I need to make sure that the server really has the 2 HDD, and the size of the 2nd drive... how to do that ?? system is Centos 5.3
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Apr 15, 2011
I have a home server running Openfiler 2.3 x64 with 4x1.5TB software RAID 5 array (more details on the hardware and OS later). All was working well for two years until several weeks ago, the array failed with two faulty disks at the same time. Well, those thing could happen, especially if one is using desktop-grade disks instead of enterprise-grade ones (way too expensive for a home server). Since is was most likely a false positive, I've reassembled the array:
Code:
# mdadm --assemble --force /dev/md0 /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1
mdadm: forcing event count in /dev/sdb1(0) from 110 upto 122
mdadm: forcing event count in /dev/sdc1(1) from 110 upto 122
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Right. Once is just a coincident but twice in such a sort period of time means that something is wrong. I've reassembled the array and again, all the files were intact. But now was the time to think seriously about backing up my array, so I've ordered a 2TB external disk and in the meantime kept the server off. When I got the external drive, I hooked it up to my Windows desktop, turned on the server and started copying the files. After about 10 minutes two drives failed again. I've reassembled, rebooted and started copying again, but after a few MBs, the copy process reported a problem - the files were unavailable. A few retried and the process resumed, but a few MBs later it had to stop again, for the same reason. Several more stops like those and two disks failed again. Looking at the /var/log/messages file, I found a lot of error like these:
Quote:
Apr 12 22:44:02 NAS kernel: [77047.467686] ata1.00: configured for UDMA/33
Apr 12 22:44:02 NAS kernel: [77047.523714] ata1.01: configured for UDMA/133
Apr 12 22:44:02 NAS kernel: [77047.523727] ata1: EH complete
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The motherboard is Gigabyte GA-G31M-ES2L based on Intel's G31 chipset, the 4 disks are Seagate 7200.11 (with a version of a firmware that doesn't cause frequent data corruption).
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Jan 23, 2011
I'm currently using Windows Vista 32-bit on a RAID 1 array; I'm using the RAID provided by my motherboard so it's fakeRAID. Anyway, I'd like to do some C development under Linux but I'm not exactly sure how to go about installing it on a software RAID 1 array without messing up Windows. I'm not sure which Linux distro I'm going to install, so I'm hoping that information isn't important. Would I just resize my Windows partition and put Linux on the newly created partition? Do I have to worry about where Linux will put its bootloader or will it manage that on its own? I didn't mean software RAID, I meant fakeRAID.
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Aug 18, 2010
I have a problem with my wireless connection. I just installed the broadcom BCM4312 firmware in order to recognize my hardware. Everything is ok, it connects to my wireless network, but i can't access the internet. My wireless is in eth1 interface. If i try to connect using PPPOE it works.
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Aug 4, 2010
When I replace a drive in a RAID 1 and then resync it, why does the file access date (all the files) on the drive from which I am syncing not change? Shouldn't the file access date always change when I copy a file? Are there ways to overgo this?
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Dec 22, 2010
i have harddrive on which raid 5 is configure and no file system is configured.so i want to access the data on auto raid component harddisk.could any one telme how to access auto raid component hard drive.when im connectingto my laptop its not opening.when i check in disk analyzer its showing auto raid component harddrive.please helpme to access data inside the raid drive.
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Jun 7, 2011
I recently upgraded a server from Fedora 6 to Fedora 14. In addition to the main hard drive where the OS is installed, I have 3 1TB hard drives configured for RAID5 (via software). After the upgrade, I noticed one of the hard drives had been removed from the raid array. I tried to add it back with mdadm --add, but it just put it in as a spare. I figured I'd get back to it later.Then, when performing a reboot, the system could not mount the raid array at all. I removed it from the fstab so I could boot the system, and now I'm trying to get the raid array back up.
I ran the following:mdadm --create /dev/md0 --assume-clean --level=5 --chunk=64 --raid-devices=3 missing /dev/sdc1 /dev/sdd1I know my chunk size is 64k, and "missing" is for the drive that got kicked out of the array (/dev/sdb1).That seemed to work, and mdadm reports that the array is running "clean, degraded" with the missing drive.However, I can't mount the raid array. When I try:mount -t ext3 /dev/md0 /mnt/fooI get:
mount: wrong fs type, bad option, bad superblock on /dev/md0,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
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Sep 4, 2010
I was trying to update the drive for my adaptec raid controller. Unfortunately, Adaptec only provides RPM packages. So I converted the package using alien. After dpkg install, I then tried using dkms to build the module:
Code:
root@atulsatom# dkms add -m aacraid -v 1.1.5.26400
Adding driver was successful, but I got some error during the build
Code:
root@atulsatom# dkms build -m aacraid -v 1.1.5.26400
Kernel preparation unnecessary for this kernel. Skipping.
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Jun 24, 2009
I've tried to install Fedora 11, both 32 and 64 on my main machine.It could not install as it stops on the first install window. I've already filed a bug but really haven't seen any feed back yet.The bug has something to do with Anaconda and the Raid array but I really can't tell.
I have an Intel Board (see signature). I am running intel raid software under W7 currently.It works fine. But, I'm wondering, when I attempt to install F!!, is my current raid set-up causing problems? Do I need to get rid of the intel raid software and use a Fedor/Linux raid program to manage the raid array??
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Aug 5, 2009
I have just installed OpenSUSE 11.1 and it runs great. However, I cannot access my 2nd hard drive. I usually have two 160gb drives in my system. one for OS and programs the other for data. I wiped the OS drive before the install and detached the data drive until after the install. Suse can see the drive but wont allow me access to it. i suspect its because i have used a new user name and password.
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Apr 15, 2010
how do i format a hard drive in order to install linux,The following errors are displayed during installation:"VolGroup01" not found followed by could not find filesystem '/dev/root
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Jul 15, 2010
I have a system with data stored in multiple disk arrays. I have to come up with a solution that will maintain the disk order of the arrays whenever a stripe fails, is removed and then put back in. One solution I came up with was to stamp every stripe with the disk array it belongs to along with its stripe id. I plan to put this stamp in the last 512 KB of each disk. And I maintain all this information in a sqlite database, that is disk array, stripe id, the software diskname, etc. So that whenever a disk is replaced, its stamp could be read and the corresponding entries in the database are updated.
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Oct 19, 2010
Consider the following setup: Ubuntu system installed on a separate SSD for speed. An ubuntu software RAID array consisting of X number of physical HDD's for storage (RAID6 or RAID10). RAID setup is done during system install. If I suffer a total crash of the SSD and loose my system, will I be able to, using a new system disk, "reconnect" to the RAID array even if the "mothersystem" of the software RAID is lost? If yes, are there any particular config- or system files I need to backup to be able to rescue the array or will it just be recognized "out-of-the-box" when reinstalling ubuntu?
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Feb 10, 2010
what command initializes a drive array on Fedora12? I'm trying to initialize the drive command for linear RAID and the command given in the textbook is for Fedora Core 2 (which I had problems with in Virtualbox).
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Aug 28, 2010
I am using Ubuntu 10.04 x64. I am not trying to install Ubuntu on a RAID 1 drive like all of the guides are for. I have a RAID 1 array that I am using for data storage. In windows it shows as a single array just fine. In linux it shows as 2 separate drives. I don't care how they show up to be honest I just have to data written to one drive written to the other automatically as well so my RAID isn't screwed up. Looking through different articles and forums I find a lot of stuff saying that it should show up under /dev/mapper/dxxx or something under /dev/mapper. All that shows up there for me is a device called control which doesn't seem to do something.
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Nov 4, 2010
I just installed Ubuntu 10.10 64bit and wanted to get access to my nvidia RAID array. This array is working, and is NTFS formatted. But wasn't showing up through normal means in Ubuntu. (for example the NTFS Configuration Tool didn't display it) Here's what the system showed.
Code:
root@hermes:~# ls -l /dev/mapper/
total 0
crw------- 1 root root 10, 59 2010-11-03 22:39 control
lrwxrwxrwx 1 root root 7 2010-11-03 22:42 nvidia_dadijiag -> ../dm-0
[code]....
Is my mirror still in effect, or did i just mount one of the specific drives from the mirror?
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Jan 24, 2011
I'm going a little bit crazy. I can't seem to remove my RAID 1 arrays. Any suggestions? I don't need to save data. The drives are empty. I'm upgrading to 4 2TB drives.Running Lucid Lynx server
Code:
jessica@nas:~$ cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md2 : active raid1 sdb1[1]
976759936 blocks [2/1] [_U]
md0 : active raid1 sdd1[0]
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May 11, 2011
Round two:I am trying to install a RAID 1 array on my system. I already have another RAID 1 array in there. I am using the BIOS RAID option to set up the array.Here's what dmraid -r tells me:
# dmraid -r
/dev/sda: pdc, "pdc_bajfedfacg", mirror, ok, 3906249984 sectors, data@ 0
/dev/sdb: pdc, "pdc_bajfedfacg", mirror, ok, 3906249984 sectors, data@ 0
[code]....
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Dec 22, 2010
I installed Debian 5.0.3 (Backport with .34 Kernel), because my server hardware (Dell PowerEdge R210) needs special firmware and drivers.However, the installation went quite smooth.I put the system on a RAID 1 Array with about 500 GB space.s I said the installation went well, however, it doesn't boot! No GRUB, nothing
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Aug 29, 2015
Just setup with Debian 8 (LXDE) a few weeks ago. Raid10 array was preexisting.
Was working well. After booting I would need to go to the save as then would need to enter the root password and everything would be good.
Can't access the array.
Used to use the command $ mount /dev/dm-o /home/myspace/folder under Debian 7.6 to mount the array (no longer works).
blkd lists a /dev/md0 but instead of UUID it is PTUUID
[Code] .....
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