Hardware :: Adding A LVM Hard Disk To A System Already Running/using LVM?
Aug 9, 2010
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.
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Jul 7, 2009
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.
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Feb 27, 2011
I would like to build a bootable system image on an attached hard disk on a running CentOS machine.The hard disk would be moved to a headless server, where only SSH access would be available. It seems that all the documented install methods assume that the installation runs on the taget machine. In this case, I would like to create a bootable system image of CentOS on a running host system. The new install mage would generally have a newer version of CentOS than the running host system where the image is created. Also, I would prefer
to do a text-based install.
The reason for all this is that I have network access to several remote machines. I can ask disks to be moved between machines, but I have no physical access. In order to do software testing, I would like to have several system disks with different installed CentOS versions. It would be easer if I could build the system disks on one single machine. The hardware an all machines is very nearly identical.
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Feb 27, 2011
My system decided to crash on me, hard. It was humming along happily for about 2 months and now doesn't boot. If I boot from hard-disk, I get grub. Launching the first kernel choice hangs. I thought maybe the install was corrupt, so I booted from usb install disk. The usb hdd didn't boot; something about an error trying to access /dev/sda . Unplugging the internal disk and plugging in the usb install disk does result in the system booting. Plugging in the internal disk in a running system usb-booted system does not result in the system detecting the disk.
How do I know if the disk is physically broken? This seems unlikely since it does manage to launch grub consistently. Or is this still possible? How can I try to mount whatever is left? The usb install disk doesn't even list the /dev/sd*. Any pointers on how to reformat the drive if it's not being mounted?
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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
Code:
fdisk -l
Will the /dev/sda space incremented automatically so we can add new partitions or we must do something?
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Jan 31, 2010
I am using mdadm 2.6.4 for managing RAIDs on Linux kernel 2.6.18. I've a query like whenever I tried to add a new disk to a running linear array(JBOD)i get a message "cannot add new disk to this array".
The exact steps are as follows:
create a new array as:
mdadm -C /dev/md0 -llinear -n2 /dev/sata/ /dev/sata2
It is getting added and i am able to see with -D command.
Now add a new disk sata3 as follows:
mdadm --grow /dev/md0 --add /dev/sata3 I get the output as:
md: sdb has invalid sb, not importing!
md: md_import_device returned -22
mdadm: cannot add new disk to this array.
So my first doubt is whether mdadm 2.6.4 supports this features or not if it supports then do I need to change the driver?
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Mar 8, 2010
I currently have an Ubuntu Server setup with a CF card that has / and /boot on their own partitions. I also have a single 1TB drive that is dedicated to the /home partition, however it's a drive that I have run out of space on.
I just purchased a 1.5TB drive to throw in the server, but I am not sure how to set this drive up so that it's seamlessly integrated with the 1TB drive. I would like it setup so that my /home partition is expanded from 1Tb to 2.5TB. I know what I am explaining is similar to raid 0, of which I am not opposed to, except that everything I have searched for online solely explains a raid setup during installation, and I don't have the time (due to school) to reinstall and reconfigure my system.
So in a nutshell, is there a way to setup raid 0 without doing a re-install or is there a way to setup 'fstab' to accomadate my request?
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May 13, 2010
I'm running low on disk space on my 10.04 server install. I'm running my normal partitioning without any lvm.
Is there a way I can create a new lvm set from my /home which is almost full and a new hdd to expand space just on that partition without killing everything on it?
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Sep 30, 2010
I have install Cent OS 5.5 on VM Ware ESXi 4. I have added new hard disk of 100 GB Disk space to same VM Ware instance.
How do I initialize that volume so I can see it on Linux server and use it.
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Jun 2, 2010
My hard disk speed is really slow. the actual reading from 'fio' is as shown in the attached image.
My system is detailed below:
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Jul 20, 2011
I have an old unuseable computer at home that became useless after a hard disk failure. I don't want to spend money on buying a new PATA IDE HDD for it, so I was wondering if I can use a PXE boot server on my notebook (using a virtual machine with Linux) and boot a Linux on the old machine with PXE without using Hard Disk. It is possible? Do I will need to make some extra configuration or use some specific enviroment do do this?
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Apr 8, 2009
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
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May 19, 2011
which OS system is better for pc with 1GB ram and 80GB hard-disk
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May 31, 2010
I have created a linux machine in virtual box now i want to add some hard disk space into it.
How would i do this. code...
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Sep 23, 2010
I want to copy hard disk have ubuntu 10.04 and ext4 to 1000 hard disk for new 1000
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May 14, 2010
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?
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Feb 28, 2010
I have been running Ubuntu as my sole OS for about a month now, and aside from Computer Janitor, I have found no drive/fs cleaning tools, or defragging tools. I know this isn't Windoze, but surely there must be a way of maintaining your hard disk. I mean installs/uninstalls must leave detritus, and file moving must cause SOME fragmentation. Are there any apps, systems or methods in place that provide this functionality?
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Jul 31, 2010
How can I add an eSATA disk to a running system? It is OK if connected before booting, but just not seen if hotplugged
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Aug 31, 2010
I've recently installed openSUSE 11.3 with GNOME When I was working on desktop settings, it locked itself, and it doesn't accept password I set during installation. I know that password is right, because it worked in YaST.
How to solve this problem without loosing any files? I haven't done backup... Is it possible to reinstall system, without formatting hard disk, and loosing files?
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Aug 17, 2009
I have never used Linux before and know nothing about it . But my cousin installed a Fedoro linux CD on my laptop which previously had Lotus symphony . Unfortunately my laptop had single partition and so Linux overrode the old OS ,ie lotus symphony .
I have some critical data on my hard disk but I have no clue how to take backup this data using Linux . I desparately need this data .
Could somebody let me know how I can access this data and take the backup ?
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Feb 18, 2010
server is :intel 5000p ,2gX4 ram ,cpu 5405 X13 sata sda 500g sata use for system rootfilesystem primate mastersdb 500g sata use for data filesystem second mastersdc 500g sata use for data filesystem second slavebios set use enhance and ide i install centos5.4 x86_64 on sda when i install system on sda, sdb and sdc is offline.after system install sucess ,poweroff and add sdb and sdc when system kernel start report ata0 error or ata1 error. exp XXXX (rydy).but when only add sdb or sdc ,system can startup and use all service ,exp vncserver ,kvm,pptp..
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Feb 20, 2010
I am trying to port the current Fedora4 system to the CentOS5 on a new hard disk. Actually, the Fedora4 system is constantly being hacked due to my lazy update. So i prefer a fresh install of CentOS5. I am not clear what files need copy and what does not need for ease and for avoiding possible backdoors.
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Jun 21, 2011
I was using Terminal and browsing a directory in my home folder. My "home" directory is located on "/dev/sdb1". When in Terminal I typed "ls" in one of my directories and the output was garbage. The output didn't show the files in the directory. I think it said something like, "input/output error". Unfortunately, I didn't write the exact error down. Instead I rebooted.The hard disk with the problem is:
Code:
$ sudo hdparm -I /dev/sdb
[sudo] password for brian:
[code]...
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May 8, 2011
I have been frustrated attempting to get Grub2 to boot a Debian Live system from hard disk. Have set aside a 4gb partition /dev/sda1 to contain the Debian Live and some other recovery tools. I actually have them all working from a 4gb USB stick successfully, but getting it to work on my HDD has proved challenging. On USB, I have PartedMagic, Gparted, Grml, and of course my standard 6.01 Squeeze. I have also managed to get the Debian Live booting from that USB stick. Very slick.
However, I can NOT get Debian Live to boot from my HDD; altho all of the others above boot fine. Have tried it two ways - one using an iSO image, which is how it is done on my USB stick. The other attempt is to copy the entire contents of the ISO to a directory.
Here are my directory structures:
debian_live_gnome_squeeze_i386- contains the following: debian-live-6.0.1-i386-gnome-desktop.iso initrd.gz initrd.img vmlinuz which is how it is laid out on my USB stick debian_live - contains the files from the ISO image The error I get is something like "panic unable to find live filesystem" My grub.cfg snippet for the two methods I have tried - the 2nd menuentry is similar to how it works on the USB stick.
menuentry "Debian 6.01 Live (on /dev/sda1)" {
insmod part_msdos
insmod ext2
set root=(hd0,msdos1)
[code]....
Probly don't really need to get it working since PartedMagic can do almost everything I need for recovery and I can use the USB for reinstall or whatever else.
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Aug 11, 2011
How do I adjust the dpkg --get-selections >installed so that it tells me about a linux installation that is not active. Currently I can not load the original installed Ubuntu on the HD and am using the live CD. How do I extract the list of installed applications for the system on the hard disk
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Nov 15, 2010
I've surprisely recognized that it's possible to write a filesystem on a hard disk without any valid partition. Well, the general advantages of partitions are clearly. But what are possible disadvantages or limitaions if you don't use a partition (e.g. if you want to use the complete space as one volume for data mining or so)?
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Jan 13, 2011
This is a good way to backup my current system:
How to backup your system to restore your server incase the hard disk is damaged.
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Apr 16, 2011
i accidently modified my file system of some partition in my hard disk from ntfs to fat...i havnt formatted the drive...but now i cannot mount this partition...
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Jun 30, 2011
For our workgroup I set up a server which is basically 10.04.2 with kernel 2.6.32-32-server on a SSD and all the data on a RAID 5 consisting of 4 2TB hard disks, thus a maximum of 6TB space for data on the RAID. Having multiple users with different amounts of data from different scientific data source I set up an lvm on top of the RAID
--- Physical volume ---
PV Name /dev/sdb2
VG Name home-data
PV Size 5,45 TiB / not usable 3,00 MiB
[code]...
Here is the problem: The volume Genomes (or /genomes) is half full
sudo df -ah
/dev/mapper/home--data-Genomes
1,9T 850G 920G 49% /genomes
but the system states it as full whenever I try to add more data (tried cp and rsync). There is no quota set to the volume (I have quotas in place for users home folders. These are only for max amount of disk space, not max file number, and I am still able to move/add files elsewhere so there seems to be no interference).
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Feb 9, 2011
I opened this thread in Ubuntu forums with no luck at all. Hope someone can give me a clue of what happens.URl...Recently, gnome has been warning me about low disk space, always less than 1.5GiGs. The problem is, baobab (disk usage analyzer) tells me that there are something like 50GiG free. I am sure that I have the free space ( I can write big files ) but the system keeps reporting low disk space.
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