CentOS 5 :: Resizing Software-RAID Disk Space On 5.5?
Mar 13, 2011
I have a dedicated server that has CentOS 5.5 installed.. I can access that server via SSH as root. Now the issue is.. httpdocs folder is situated in /var where all website data is stored. I have more than 50GB of website that needs to be transfered to this partition but this partition is of 4.0GB..
# cat /etc/fstab
/dev/md1 / ext3 defaults 1 1
/dev/sda2 none swap sw
/dev/sdb2 none swap sw
[code]...
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Nov 3, 2010
Purchased (4) 2TiB Drives (actual disk space) and created a RAID5 array expecting to have 6TB of useable disk space, however actual useable space is 5.46TiB.
So, the question is where did the disk space go?
First off, I can say for certainty the disks actual useable is verified at 2TB each have mounted and formated on a non-linux system (OSX).
Disks - 2TB Per disk, Tested HFS, Actual 2TB Useable
root@server:/server# fdisk -l 2>/dev/null | egrep "sd[hijk]" | grep Disk
Disk /dev/sdh: 2000.4 GB, 2000398934016 bytes
Disk /dev/sdj: 2000.4 GB, 2000398934016 bytes
Disk /dev/sdk: 2000.4 GB, 2000398934016 bytes
[Code]....
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Feb 18, 2010
I am trying to install CentOS 5.2, and the installation ran out of disk space after running for about 2 hours.I checked the FAQ, and it said 1.2 GB. The disk is 3 GB. The default install was selected, and I think that it checks for sufficient available disk space before installing. Still, it ran for quite a while before announcing that it was out of disk space.The Installation Guide is not very helpful, since there is a blank page where the disk space requirement is supposed to be. I just picked the default installation. A search of the forums on "not enough disk space" did not return much.
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Jun 9, 2011
Following scenario: My server in some data center on a different continent with two disks and software raid 1.
One day I see that a disk failed (for example with /proc/mdstat). Of course I should replace the failed disk asap. Now that I think about it, I am not sure how. What should my email to the data center support guy mention to make sure that guy doesn't replace the wrong disk?
With hardware RAID it is very easy, because the controller usually has some kind of red LED indicator. But what about software raid?
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Jun 16, 2011
I am running centos 5. So far, it gives no problem but just yesterday, when it reported "no free space" for file writing, I try to remove some file as usual. Unfortunately this time no matter how much files I had deleted, it just keep showing no available space for doing so.
Result from df:
[root@LSMSVR ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
1.2G 269M 879M 24% /
/dev/hda6 4.8G 138M 4.4G 4% /tmp
/dev/hda5 19G 2.4G 16G 14% /usr
/dev/hda3 48G 12G 34G 25% /var
/dev/hda2 379G 365G 0 100% /home
/dev/hda1 99M 15M 80M 16% /boot
tmpfs 180M 0 180M 0% /dev/shm
ow to recover the lost space in /home?
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Dec 29, 2009
Can some one tell me how many space does a plan CentOS 5.4 take and the minium size of the memory.
Also, what is the minium size I have to partition on /boot
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May 11, 2011
I am running Centos 5.5 in vmware and recently had to increase my disk space from 20GB to 40GB. I understand that in linux, the increased disk space is not automatically reflected but as I am new to this topic, I am not sure how I can go about doing this. how to see what's the available space and how I can partition(?) this.
For your reference:
[root@localhost ~]# fdisk -l
Disk /dev/sda: 42.9 GB, 42949672960 bytes
255 heads, 63 sectors/track, 5221 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
[Code].....
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Mar 13, 2009
Need to know if there are any known errors allocating disk space using rsync. I have recently setup a small file backup server (2 500GB drives) running Centos 5.2, with a rsync daemon (via xinetd). However I have noticed that after about a week of usage, if I reboot, then the disk that rsync uses, has a lot of multiply claimed blocks and inode errors, such that I have to run fsck multiple times to fix. This has happened a couple of times now so I don't think that its random.
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Nov 17, 2009
Our server is a CybertronPC I2XV9080 Imperium Tower. It is equipped with a supermicro X7DVL-I Motherboard and Quad 750 GB SATA2 RAID edition hard drives in a raid 5 array. We tried to install Centos on the Raid5 array with Device-Mapper as the LVM. In the BIOS SATA Raid was enabled and the ICH RAID code base option was set to [Intel].
Intel Matrix Storage Manager Option ROM V5.6.4.1002 ESB2
RAID
ID Name Level Strip Size Status Bootable
0 Raid5 Raid 5 64KB 80GB Normal Yes
1 Raid_5 Raid 5 64kB 2000GB Normal Yes[code].....
Can I have multiple level raids across the same array or would that lead to problems as above? Is the root cause of my problem the fact that intel raid5 is not supported for Linux as based on the following link http:[url]....
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Feb 8, 2011
I'm using software RAID with this configure:100 MiB RAID 1 boot1 GiB RAID 1 swap30 GiB RAID 0 rootRest RAID 0 homeI'm using 2 hard drive with capacity of 500 GiB, I want to resize root partition to 12 GiB without losing my data on home partition, Can I unmount root and home partition from RAID and resize them without losing data?
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Jun 5, 2009
I've added a new LUN to my Centos 5.2 server using Powerpath and have added it to an ext3 logical volume. I extended the logical volume using lvextend and the new space shows up correctly in lvdisplay. What I'm having problems with is getting Centos to see the new disk space (df -h shows 500GB, not 600GB as expected). I've tried running a resize2fs on the new volume but it tells me that "the filesystem is already n blocks long. Nothing to do". Does any one know where I'm going wrong? If possible I'd like to sort this without a reboot.
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Dec 26, 2009
A part of the disk space is unavailable: Only 37 GB out of 80GB is accessible A part of the disk space is unavailable: Only 37 GB out of 80GB is accessible. I have a vmware instance of CentOS setup with 80GB of Hard Disk space ( Preallocated). When I login to the system I only see 35 GB.
[Code]...
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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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Nov 22, 2010
I'm trying to setup my test nagios to check the disk space of another linux box. I've got it setup and checking. But to my surprise, it was checking the nagios server's local disk space instead of the remote linux.
Here is my services.cfg.
define service{
use basic-service
name disk-space
check_command check_local_disk!20%!10%! /
[Code].....
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Dec 5, 2009
I have a server with centos 5, with two hd, i did a fresh installation with cenTOS using the 2 hard disk, now we need enlarge with other hard disk more, can some one explain how to enlarge the space of disk without re-install the operative system?.
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Dec 16, 2010
I have two 250 GB drives setup with hardware RAID 1. I had on sda and sdb: 20 GB swap, 20 GB /, 198 GB /srv all was good until I started to run out of space on 20 GB /. So I booted the server with Suse 11.3 live cd and reduced the size of 20 GB swap to 10 GB and 198 GB /srv to 150 GB on sda and sdb.
All good so far, then tried to increase 20 GB / to 60 GB, but the Partition setup says the Max Size can be 20 GB, I have checked and I have 42.88 GB of Unpartitioned space. I have rescanned, rebooted, Server is still running fine by the way, but the 42.88 GB of free space is not made available for the expansion of 20 GB /.
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Feb 20, 2010
I have 10 GB drive with win98SE taking 2 GB and 9.04 taking 2.3 GB, then the rest is unallocated space. I am trying to use upgrade manager in 9.04 to upgrade to 9.10 (I have 9.10 CD but it fails to install - tried to download it several times. I know upgrade manager solution works in principle, but upgrading to 9.10 says it needs another 1GB of space.
I have used 9.04 live disc to start GParted but there seems no way to resize the 9.04 partition to use the unallocated space - can only resize it down. Making the unallocated space a partition does not seem to help. How can I go from here to make enough space to upgrade to 9.10 and keep Win 98
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Nov 3, 2010
I'm trying to resize an NTFS partition on an IBM MT7977 Server. It has a Adaptec AIC-9580W RAID controller. I was thinking about doing it with a gparted LiveCD/LiveUSB, but then I realised that they won't have drivers for the RAID controller. A quick google for "9580W Linux" doesn't return anything promising.
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Feb 26, 2011
Some months ago I decided to give a chance to this 'Linux thing'. However, being uncertain of the usefulness and friendliness of it all, I decided to keep my Windows 7 partition untouched and just make a 30 Gb partition to "try out" Linux. As it turns out, it's been some 2 months since I last booted Windows and was now wondering if there's a way to "steal" some space from that W7 partition and add it to my Ubuntu one without messing up files. Some kind of major defragmentation, leaving an empty part of the disk which I could "attach" to my Ubuntu partition. I am using Ubuntu 10.04 LTS version.
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Feb 24, 2011
root@localhost:~ $ df /dev/sdb1
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sdb1 1922858352 23247088 1801935664 2% /mnt/external/sdb1
[code]....
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Dec 7, 2009
I have decided that my partition table does not meet my needs Barrymore, and I want to shrink the "/" partition by 80GB, and then create another file system on that space. I did some research on-line, and I'm not sure which way is the easiest and more secure way to perform the change with out putting the "/" file system on risk.
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Mar 13, 2011
I installed 11.4 (64 bit) and all went amazingly smooth. I created three logical partitions (boot, swap and home in this order) and an extended partition with root and backup. Just prior to the installation, my external backup drive went belly up so I created a 40 gig partition to "fill in" the backup duties until I purchased a new one. I got it and set it up and then deleted the 40 gig backup partition thinking I would just add the now unallocated space to the root partition but alas it was not meant to be. I can't resize the root partition while it's mounted and I can't unmount it and have a working system. The 40 gigs of space is sitting right next to root (no having to jump or resize other partitions to combine the two). Is there a way to do this or did I just waste 40 gigs worth of real estate.
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Mar 1, 2010
My root partition was filling up, with only 500 mbs left, I wanted to resize my root partition from 20 Gb to 40Gb
So I resized my partition by using these steps:
Using Gparted to resize another partition to give space for the EXT4 Using fdisk, deleting the root partition (on /dev/sda2), and creating it again using the new size resize2fs /dev/sda2 Updating grub2
But now the problem is that although I can boot in my new partition and the new partition shows it is 40Gb, but the free size was still 500mb. So I booted from a LiveCD and checked with e2fsck -p /dev/sda2, it reported clean. So I added the -f flag (force check), still, the drive is full.
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Sep 12, 2015
I just bought a new HP desktop, and I want to install Debian on the hard drive. I ran the Windows program on the Debian CD to start the install.
I selected Manual drive setting, and resized the large C: partition to 50 GB. I want to install Debian in some of the free space, only their isn''t any free space! The 400+ GB I took out of the C: partition is labeled "unusable" instead of "free space."
If I double click the unusable space, I am just given the cylinder/head/sector numbers. How I can make that space usable?
I would boot my Gparted CD, but I don't know how to get to the BIOS. The boot screen goes right to Windows without showing me the key to get to the BIOS. I tried hitting DEL, but to no effect. Do you know what the HP computers use to interrupt the boot?
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Jan 31, 2010
Today I was installing a lot of software since I'm just setting up my Slackware system again after a fresh install, and I realized that my root partition has very little space left.
Here is the output of df -h:
Code:
As you can see, I have a 20G (19G here for some reason) root partition, 8G /var, and 86G of /home. I thought this would be plenty since many recent recommendations for / are 10-15G. Now, though, 17G are used up for some reason! How is this possible? I thought a full slackware install only had about 4G of software! I don't have any music or movies or any crazy huge files that I know of, and those would be in my /home directory anyway. Is there any way I can see which files are taking up all this space?
If it's necessary to allocate more space to my / partition, is it still possible to boot up a GParted live Cd, shrink /home a bit, move some partitions to the right, and expand my root partition? I would REALLY prefer I don't have to reinstall since I just spent a ton of time setting up my system again, but if worst comes to worst ... :'-(
In case you're curious, here's my /etc/fstab:
Code:
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Jun 21, 2010
I installed wubi with the lowest amount of virtual disk not realising what it referred to. i have looked at the help files for increasing the virtual disk - lvpm is not compatible with the latest wubi. I have downloaded wubi-add-virtual disk but when i paste the command into terminal it says that cannot open it.
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Aug 25, 2009
OS: RHEL AS 5 64-bit
HDD:300 GB Hardware mirror (HP blade bl460c)
While installing OS, in partition window after OS file system structure I've left 277 GB. But after installation it shows Size - 255GB and available disk space is 242 GB.
Isn't it weired? How can I use the total amount of space in Linux? I need the whole 277GB exactly. What should be my workaround?
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Jun 9, 2009
I have a laptop that came with Windows Vista (64-bit) installed. I created a new partition and installed XP (also 64-bit) alongside it.Last night I shrunk my XP partition and created another new partition and installed Linux (CentOS 64-bit) on it. I made an error in judgment and didn't allocate enough space, so I need about 10 more gigs for the Linux partition. It boots up and runs, but I need about 10 more gigs of storage for the files I want to keep on the partition (and yes, they have to be on the partition, I definitely need to know how to do this, not a workaround)I went into Vista and shrunk the XP partition by 10 gigs, so now I have 10 gigs of free, non-partitioned space.
As it stands, when I start up the computer I get the GRUB boot loader. I can boot my Linux install or choose "Other" and be taken to the Vista boot loader. From there I can choose XP or Vista to boot.So, my question is... what is the best way to append the 10 gigs of free space to the Linux partition? Is this something I should do inside of Linux? I have the option to do it in Vista, but the partition shows up as "healthy" but without a file system type.I just don't want to screw up the boot loader, partitions or anything else.This isn't my area of expertise, so if anyone could give me a good suggestion or solid answer
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Oct 16, 2009
my Fedora 11 system is not starting anylonger. It stops with the message:
Code:
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).
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Jun 28, 2010
I have an SiI hardware SATA RAID card, with two 500GB disks in mirrored RAID configuration. When I first plugged them in and set it up, things seemed to work ok, but on boot the raid controller told me that the RAID needed rebuilding, and it would happen automatically after POST. So I didn't worry about it, and the drive mounted fine, and it's been that way for years. I just went in and manually on-line rebuilt the RAID in the controller's BIOS, and now when I boot into Ubuntu, both disks show up in fdisk, but neither show up in /dev/disk/by-uuid. Am I missing something?
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