Fedora Hardware :: RAID 0 With 4 Hard Disk - Adding New Partitions?
Jul 27, 2010
We have a server with RAID 0 with 4 hard disks on it each 250 GB. Linux kernel must find one hard disk named: /dev/sda with 1TB capacity. right? And also we have 2 partitions on sda: sda1 and sda2. We want to add another partition but we don't have enough space.
Now the problem:
If we add another hard disk and run
Will the /dev/sda space incremented automatically so we can add new partitions or we must do something?
I have a sata 320 gb with mandriva linux 2009.1 on it.And it is what curently atached to my cpu. It is shown as 'sda' in the partition table.I also have another 40gb hard disk with windows xp installed on it.It is shown as 'hda' in the partition table . Now what i want to do is attach this 40gb hard disk to my pc and configure grub on my 320gb hard disk('sda') so as to boot windows xp(which is residing on the second hard disk,'hda')Can anyone tell me if what im doing is feasible or not? If it is feasible,can anyone suggest me how to get it working. I know i just need to add 2-3 lines to my grub.conf, but dont know what exactly i need to write.
I have the newest Ubuntu installed on my machine. It currently has a 160GB sata drive. I just bought two shiny new 2TB drives that I want to RAID as 4TB. How do I go about adding these two hard drives even though install is complete? I want the 4TB assigned to my /home directory.
I have two systems, both having file systems running on LVM. System No 1 has 2 PATA HDD (40 and 80 GB) running linux on LVM. System 2 has a single SATA HDD (300 GB) which again uses LVM. What i was trying to do was to add the two HDD in system 1 to system 2, possibly with little or no data loss. So i connected the PATA drives from system 1 to system 2 and booted up. The system booted up to the openSUSE 11.3 splash screen and stopped after scanning the HDDs. Frankly i never expected openSUSE to try n auto mount the new drives. I think the problem was caused because both the systems had VG and LV of the same names. Can the volume group be renamed, maybe from a live CD or somthing?? System 2 is not boot able now.
Ubuntu 10.10 is dual booted but it is my primary OS.
Unfortunately it's on the outer edges of the disk in an extended partition.
This has always bugged me, with regards to read/write performance.
Do my concerns of reduced performance have any foundation? Should i bite the bullet and format the drive installing ubuntu first?
I ran the disk read benchmark and my read speeds were 100MB/Sec at the beginning of the test to just 55MB/Sec at the end. I have no idea if the position of the test has any bearing on the position of the disk or whether the speed recorded is affected by other factors such as the tests function or simulation.
I want to make the transition from windows (sick of it). Im using Lenovo G530 Laptop and was wondering which would be the best Linux Os (meaning Ubuntu, fedora or something else). Keep in mind that I mostly use my laptop for college work and a lot of video and audio editing. I also want to be able to run Dual operating system (meaning that I wanna run both Linux and Windows) from the same computer as it might be easier for me to make the transition a little bit more easier. That being said I need someone to give me tutorials (video preferred) on how to make the partitions on the hard disk and step by step instruction on how to install both the two OS in my laptop.
i have installed ubuntu version 9 and i cant seem to find where hard disk partitions are,what do i do?also what do i do to install the webcam and to change from gnome to Kde enviroment!!i also installed virtualbox but i seem not to find the icon
Especially /var because I am running a MYSQL server on this box. I want to know if there is a safe procedure to follow to move these partitions from the current sda2 and sda3 that they are now to sdb2 and sbd3 because this is a much bigger disk. I don't want to break MYSQL and I don't want to be down for a long period. I have heard of some people suggesting a sym link to a /newvar and /newuser on sdb but I have also read this will not work when moving to a different physical drive.
I got a new hard drive yesterday, a Seagate Baracuda XT 2000GB SATA3. I'm running it on the SATA3 jmicron chip in AHCI mode, and Opensuse 11.2 is having issues with using this hard drive properly.
The hard drive seems to take a while to detect, for one thing. After it is detected however, I am told I have no hard disk that can be used for installation. The exact message is:
"No hard disks were found for the installation. Please check your hardware!"
After that, I'm told the partitioner can't read the partitions on my hard drive properly:
"The partitioning on disk /dev/sda is not readable by the partitioning tool parted, which is used to change the partition table.
You can use the partitions on disk /dev/sda as they are. You can format them and assign mount points to them, but you cannot add, edit, resize, or rename partitions from that disk with this tool."
I partitioned the new hard drive under Windows, with a partitioning tool called Partition Wizard (free / home version). I'm not sure if hard drives partitioned with this tool are not recognized by OpenSuse's partitioner, or if it's something else.
I already installed Windows on this hard drive, so I can't delete all the partitions I have so far and start all over again (I'm keeping my system a dual-boot between Windows 7 and openSuse 11.2). What can I do so OpenSuse will see and modify my partitions? If it is the partitioning not being understood, is there some sort of tool that can make the partition table of the hard disk linux-readable? (a free Windows program that could do such).
I have what seems to be a hard disk Write speed problems with my first hard drive. Timing the cp command of a 700 Meg file takes about 8 secs from disk 2 to 3 but takes 25 minutes from disk 2 to disk 1.
Here are the details: Kubuntu 9.04 (Kernel 2.6.28-15-generic) Hard Disk 1 : /dev/sda (WDC WD2500KS-00MJB0) Partitioned /dev/sda1 ext3 / 10 Gigs /dev/sda2 extended 222 Gigs /dev/sda5 linux-swap 2 Gigs /dev/sda6 ext /home 220 Gigs
Hard Disk 2 : /dev/sdb (WDC WD2500AAKS-00F0A0) Partitioned : /dev/sdb1 ntfs 16 gigs /dev/sdb2 xfs /home/eric/data_drive 216 Gigs Hard Disk 2 : /dev/sdc (ST3500320AS) Partitioned: /dev/sdc1 xfs /home/eric/data_drive2 465 Gigs
By doing 'time cp ...sdb1/test.avi ...sdc1' takes about 8 seconds and same vice-versa. the command 'time cp ...sdb1/test.avi ...sdb1/test1.avi takes about 11 seconds and the same holds true if sdc1 is used But copy sdb1 or sdc1/test.avi to either sda1 or sda6 and it takes 25 minutes. Same problem if I copy from the same drive partition (sda). I have booted a livecd Knoppix 6.2 and the same problems happens.. So safe to say it's not Kubuntu. The only thing that is left to do is backup and reformat the partitions as XFS and try again. I also did a full smartcontrol Extended test and no errors. Checked all the various logs and nothing found.
I just bought a new 2 TB hard disk to replace my old 175 gig one. I currently am dual-booting Lucid Lynx and Windows 7, and rather than go through the process of reinstalling both, then reinstalling all my programs, settings, and everything, I was wondering if there's a way I can just copy the partitions on my 175 GB disk to the new one, grow them to fill up the rest of the free space on the new 2 TB disk, and then plug that HD into the primary master plug on my motherboard... will that work?
I'm trying to install Ubuntu 10.10 64-bit on my laptop HP pavilion 3046ee . When I reach the partition part , it doesn't detect the Windows 7 os , and doesn't detect any hard disk partitions ( it sees the whole hard disk as one unallocated partition ). I faced the same problem when I tried Ubuntu 10.04 LTS.
I've a faulty hard disk I'm trying to read data from before I send it to the professionals. The disk makes some "good" mechanical noise when plugged into an IDE-USB header into my machine, so I think it's spinning up OK.
Under Windows, the disk is seen in admin tools but I can't do anything to it; it's unreadable and unalterable.
Under Linux (Ubuntu), I see the sdb appear in /dev. No partitions though (no sdb0 etc). At first, I thought this implied that my MBR was bad and the partitions could not be found. But, using dd suggests it's a little worse that:
To use squid i want to install linux in my 200 GB hard disk. I need guidance regarding to installation phase.A server which will be dedicated for squid proxy what things should I keep while installing my red hat linux operating system.I mean the partition sizes for swap ,root ,boot and any partion for squid cache should I need during making partitions ?
i am currently trying to do software raid 1 on a running ubuntu 9.10 system with mdadm. I might have done something wrong and im trying to go back from the beginning. Does anyone know how to remove all the raid info from a harddisk and get it back to its original state.
What is the best way to install Windows and Linux on two-hard-disk array? In fakeraid there are no problems in Win, but linux installation is almost impossible (i've tried unsuccessfully...). In software raid it would be impossible to share files between win and linux? And finally hardware raid is possible, but cheap controllers have low performance. Is there any other way (apart from spending a lot of $$ for adaptec controller) ?
I am using Ubuntu 10.10. I have a system set up with 1tb HD. I also have another 1tb HD which I'd like to use to mirror the other drive. So if the primary HD fails I can boot and operate from the mirrored drive. I've read that this is possible by using Raid. however I am confused if it is possible to set-up with a HD which is already set-up Ubuntu system. Also what what I can make out the mother board does not have a raid option.
I wanted to implement raid5 such that one partition is from my laptop's hard disk and others from other hard disks. After making one partition a raid partition, I rebooted the system. The computer stopped mid-way during booting, and brought me to the shell. On typing fsck -p, it told me an unexpected error occured in the partition which I had made for raid. Is there some condition that we cannot boot from a disk containing one of the raid partitions ?
I tried to install ubuntu 10.10 today through livecd. but the partitions in my 60gb samsung harddisk are not detected. My entire harddisk is shown as unallocated free space. Also gparted is not detecting the partitions as well. I am currently not facing any problems with my partitions in windows xp. I tried the solution given here (to no avail): [URL]. I have had no such problems with previous versions of ubuntu.
my Fedora 11 system is not starting anylonger. It stops with the message:
VFS: Can't find ext4 filesystem on dev dm-0
The system told me since a while, that a lot of the sectors of one disk of the (software) RAID compound are failed already. So tried to disconnect each of the disks and start them separately. Unfortunaltly this is not working (for one its is not working at all, the other wents the same far as with both), when I tried to recover the system with the Fedora DVD, it said no distribution found. I am quite new and do not know so much about linux system, so i do not know what further information you could need. Maybe it can be important, that both disks are encryped (the system wents so far, that I can type in the password).
I have implemented LVM to expand the /home partition. I would like to add 2 more disks to the system and use raid 5 for those two disks plus the disk used for /home. Is this possible? If so, do I use type fd for the two new disks and use type 8e for the existing LVM /home disk? Or do I use type fd for all of the raid disks?
after installing Ubuntu on one WD 500 GB hard disk and after making mistake and pasting wrong code into Terminal:my OTHER WD 500 GB hard disk that was also in the system (I guess it was "hd1") - died.The problem must be, I guess, I typed wrong code: "hd1,1" instead of "hd0,0".)500 GB (NTFS) of data was on that other (non-Ubuntu) hard disk, and now I can not access it anymore. While booting, system gives "Hard Disk Error" warning and stops.One again: I installed Ubuntu od one hard disk and at the end of instalation I pasted wrong code for GRUB, giving address of another hard disk. Now that other hard disk has error and will not work
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):
- 250GB system drive 250MB/dev/sdh1/bootext3 lvm partition rest of driveVolGroup_System 10240VolGroup_System-LogVol_root/ext4
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.
I had a dual boot (windows 7 + debian), both of them installed in my internal hard disk, with the GRUB in it. I have recently installed a second linux distro (mint), but I put it in an external hard disk. Now the GRUB allows me to boot any of the three operating systems, but I need the external disk to do it. It seems that after the mint installation the GRUB is now working from the external disk (if the external disk is not connected, the machine does not boot.) �Is there a way to change the location of the GRUB, to the internal hard disk of my laptop?