Ubuntu :: 10.04 - Prepare Disk Space With Empty Array
Sep 30, 2010
I have a PC with Windows 2000 Pro installed in an NTFS partition of 60GB. My rest hard disk (500GB) is empty, no partition at all. When I run Ubuntu 10.04 installation after step number 3 I get a weird step number 4 showing prepare partitions with an empty array and no available command button at the bottom! So I can not create any partition... Also in step 4 I never see the "prepare disk space" menu. If I use a 9.04 Ubuntu CD and I try to install I get every menu fine as expected. I even tried the 10.04 CD to another PC with Windows XP PRO and the installer worked as expected for partitions.
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May 26, 2009
The partition is formatted to ext3, starting with block 1 on the drive. The mount point for /dev/sdc1 lists 0 files when doing `ls -A` `df -h` shows that the partition has 92MB used. How is this space being used, and how can I free it up?edit: I guess this isn't a newbie question.
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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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Dec 23, 2010
I have a RAID 5 array, md0, with three full-disk (non-partitioned) members, sdb, sdc, and sdd. My computer will hang during the AHCI BIOS if AHCI is enabled instead of IDE, if these drives are plugged in. I believe it may be because I'm using the whole disk, and the AHCI BIOS expects an MBR to be on the drive (I don't know why it would care).
Is there a way to convert the array to use members sdb1, sdc1 and sdd1, partitioned MBR with 0xFD RAID partitions?
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Nov 28, 2008
To do this, can I do this?:
if (@ary = ""),
or is something more needed?
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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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Aug 1, 2010
I had done a new lucid install to a 1 TB RAID 1 array using the alternate CD a few weeks back. I messed up that system trying to some hardware working that lucid doesn't have drivers for yet, so I gave up on it and reinstalled to a single 80 GB disk that I now want to move over to the RAID array.
I moved all of the existing files on the array to a single folder, then copied all of the folders from the 80 GB disk over to the array with permissions and symlinks (minus the contents of /proc and /sys, which I created empty).
These are the commands I used:
Quote:
p -a -d -R -v -t /media/raid_array /b*
cp -a -d -R -v -t /media/raid_array /d*
cp -a -d -R -v -t /media/raid_array /e*
cp -a -d -R -v -t /media/raid_array /h*
[Code]....
I tried to change fstab to use the 689a... for root, but when I try to boot, it's still trying to open /dev/disk/by-uuid/412d...
So then I booted from the single disk again and chrooted into the array, then ran update-initramfs -u. I got 3 "grep: /proc/modules: No such file or directory" errors, and "cat: /proc/cmdline: No such file or directory"- so I created directory /proc/modules, created an empty file /proc/cmdline, and ran the initramfs update again. Then I tried to shut down, which hung (probably because I was doing all of this from a terminal window in Gnome), so I killed the power after a couple of minutes.
It's still trying to use /dev/disk/by-uuid/412d... to boot.
What am I missing? I assume I just have to change the UUID to mount as root, but I don't know how.
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Feb 17, 2016
I received the following error when I got home from work today. If this was a windows environment, my first inclination would be to boot off my dvd and then run a chkdsk on the drive to flag any bad sectors that might exist. But there's a complication for me.
Code: Select allThis message was generated by the smartd daemon running on:
host name: LinuxDesktop
DNS domain: [Empty]
The following warning/error was logged by the smartd daemon:
Device: /dev/sdc [SAT], 1 Currently unreadable (pending) sectors
Device info:
WDC WD5000AAKS-65V0A0, S/N:WD-WCAWF2422464, WWN:5-0014ee-157c5db9a, FW:05.01D05, 500 GB
For details see host's SYSLOG.
You can also use the smartctl utility for further investigation.The original message about this issue was sent at Sun Feb 14 13:43:17 2016 MST.Another message will be sent in 24 hours if the problem persists.
From gnome-disks
Code: Select allDisk is OK, 418 bad sectors (28° C / 82° F)
I did a bit of reading and it seems that most people suggest using badblocks to first get a list of badblocks from the drive and save it to a file. Then use e2fsck to then mark the blocks listed in the badblocks file as bad on the hard drive. My problem here is that this drive is part of a RAID5 array that hosts my OS. I wanted to confirm if this was still the correct process.I boot to my Live Debian disk, stop the raid array if it's active. Then run badblocks + e2fsck commands on the drive in question and then reboot.
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Feb 21, 2010
I have removed the trial of win 7 and want to use the empty space for Ubuntu 9.10, [46gb]. Opening disk utility shows 60gb hard drive, divided into system reserved 105mb, 46gb file system [Linux ext4 [version 1]], 13gb extended [contains no logical partitions], 13 gb [Linux ext4 [version 1]], 617mb swap space.Because I have given the 46gb space the same name as the 13gp space i.e. [Linux ext4 [version 1]],will this now be used By Ubuntu for data storage or do I need to do a complete re-install?
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Mar 2, 2011
i got my powermac g3 up and running as a file server, i added a sata card and two 250GB hdd's which i promptley formatted as ex4, today i noticed one of the drives (the empty one) shows as having 11gb used, at first i thought it was a artifact of samba, but i cheacked the atual comp and ubuntu shows the drive as having 11GB used but it is compleatley empty? i then cheacked the outher drive which about 30GB of data on it, but it shows as having 40GB used?
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May 18, 2011
I had been browsing the web, suddenly I got a massage "only 64 Kb of free space" I Opened disk usage analyzer and I found out that there are 70 GB in my home folder, However the sum of sub folders is only 35 GB, therefore there should be some kind of huge file in my home folder , but I CAnT find it?
I can't even open firefox because I don't have enough space
I found it , it was .xsessions-errors
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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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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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May 20, 2010
I was trying to list sudo users in a Linux Machine,
[root@redhat ~]# grep -v -E '^#' /etc/sudoers
root ALL=(ALL) ALL
%work ALL=(ALL) ALL
%dilipvp ALL=(ALL) ALL
where work is a group and dilipvp is user. Can you help me in creating a better script which can list the members of the group work as well. and why I am getting empty space in between.
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Feb 26, 2011
Some thing is using up a huge amount of my disk space about 10G and I can not determine what it is. When I look at my disk usage in system monitor it say I have used about 25G and when I scan the directory in disk usage analyzer the entire file system used is 15G.
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May 23, 2010
ran out of space in my /home dir. Have a second hard drive to install and would like to designate it as additional space for /home. I do not want to mount it as a dir inside my home I would like it to simply work as though my /home simply has more space available to it.
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Jan 2, 2010
I'm running mythbuntu 9.04 and am having an issue with disk space.
I try 'rm' various log files but the space I free up lasts less than a minute before the disk reports as being full once more.
df -Th | sort gives:
Quote:
/dev/sda1 ext3 8.3G 7.9G 0 100% /
/dev/sda6 ext3 138G 125G 6.3G 96% /music
/dev/sda7 xfs 783G 617G 167G 79% /videos
/dev/sdb2 xfs 344G 242G 103G 71% /recordings
[Code]....
There's nothing enormous in /var/log and my trash and the root trash are empty.
why size and used fields are not the same despite 100% usage being reported on sda1..
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Sep 12, 2009
Ok, as the title indicates I have a RAID5 array with 4 500GB SATA drives. This is the only drive configuration on the system (i.e. the OS also resides in the RAID array). I'm running CentOS 5 and need to know how to go about increacing the space in the RAID array by replacing the drives with 4 1TB drives.
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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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Nov 18, 2010
I don't understand disk sizes in Linux. I have a 500GB drive. It's ext4. I have run "tune2fs -m 0" on it to reserve the amount of space reserved for root to 0.
I'm using Ubuntu 10.04 that comes with a Disk Utility. When I run "System->Administration->Disk Utility (palimpsest)" the disk shows up as 500GB (see picture). But when I run df -h it shows up as 459GB. So, I don't understand the discrepancy.
When I run df I get the following:
Question: Why is Disk Utility showing me something different than "df"?
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Sep 8, 2010
Just ran into a problem involving mdadm, a disk which had been in a raid array, and an attempt to reformat. Basically, I went to reformat some partitions which had been in raid, and one of them threw the error andy@andy-desktop:~$ sudo mkfs.ext3 /dev/sdb5 mke2fs 1.41.11 (14-Mar-2010) /dev/sdb5 is apparently in use by the system; will not make a filesystem here! An attempt to umount revealed it was not mounted. lvdisplay and fuser did not reveal anything to me, so I just started looking around. I was graphically navigating /dev and noticed a /dev/md_d0 which did not look like /dev/md_d1 etc (it was missing a little arrow). I had not seen this notation before (my raid was md0), but figured it couldn't hurt to try stopping it.
andy@andy-desktop:~$ sudo mdadm --detail /dev/md_d0
mdadm: md device /dev/md_d0 does not appear to be active.
andy@andy-desktop:~$ sudo mdadm --stop /dev/md_d0
mdadm: stopped /dev/md_d0
After this, the partition formatted fine! I saw a lot of instructions including zeroing the partition and removing a logical volume, but the above was the only thing which worked for me! Just posted it in case it helps someone else. I know I've not been terribly technical!
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Sep 27, 2010
I've been getting this error message:"The configuration defaults for GNOME Power Manager have not been installed correctly. Please contact your computer administrator."a few times, and it turns out to be because of low disk space. No worry, I empty the trash uninstall unneeded programs and clean out the downloads folder that filled up my disk. And all is ok. But not this time.Since I can't use X, I delete stuff from the terminal, and also make sure to clean out the .Trash in both /home and /root. But still the disk is full. I delete more stuff, but it doesn't even seem to go to .Trash. It disappears, but no more disk space.
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Jan 20, 2011
I would like to fix partition alignment on my SSD disk, and I am curious if it is possible to do it without handling data from disk and back. Is it possible with Gparted?Quote:
$ sudo fdisk -l /dev/sda
Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
[code]....
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Mar 13, 2016
Code: Select allmyusername@mycompname:~$ varCurl="abc def curl: ( xyz asdf"
myusername@mycompname:~$ expr index '$varCurl' "curl: ("
4
myusername@mycompname:~$ expr index "$varCurl" "curl: ("
3
myusername@mycompname:~$ echo $varCurl
abc def curl: ( xyz asdf
How to make sure that space is treated as space and string is not treated as array? (I expect value of 9 or 10, not 3 or 4).
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Nov 16, 2010
I've had Ubuntu 10.10 installed for a while and I recently cleared a partition to install Windows XP. However, when I load from the Windows XP boot CD, I get "7379one MB disk 0 at ID 0 on ?Bus 0 on atapi(Setup cannot access this disk)". I've tried just about everything
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Jun 10, 2011
I am trying to build a new array after adjusting TLER on my disks, which permanently changed some of the drives sizes. I am not sure if the following inconsistencies are related to the newly mismatched drive sizes.
Using:
Code:
mdadm --create --auto=md --verbose --chunk=64 --level=5 --raid-devices=4 /dev/md1 /dev/sdd /dev/sde /dev/sdf /dev/sdg
Nets me (build-time was two full days):
[Code]....
On a side note, since I'm recreating my array from scratch, I was wondering if anyone here knows of any optimized settings I could use. I've got 3Tb of data to transfer, so lots of test material.
These are Western Digital First Generation 2TB Green Drives (WD20EADS-00R6B0) with WDidle3 fix applied & TLER=ON. These are pre Advanced Format (aka not 4K).
Code:
mkfs.ext4 -E stripe-width=48,stride=16 /dev/md1
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Aug 31, 2010
When I use disk utility to expand my RAID array it creates a partition on my 1.5TB drive which it would like to add to the RAID 5.
However, none of the drive existing on the RAID are partitioned so what I think has happened is the partition itself has created a difference of about 2 million bytes smaller than the others and thus unable to add the component.
How can I specify the exact bytes for my hard drive partition so that I can add this to the array?
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Mar 6, 2011
I wanted to extend my raid array with one disk, but I made a major error. I forgot partition the new disk to utilize the full 640GB. I used the following commands to extend the array:
Code:
mdadm --add /dev/md0 /dev/sdf
mdadm --grow --raid-devices=6 /dev/md0
xfs_growfs /dev/md0
After noticing that something was wrong I used these commands to remove the new disk:
[Code]....
How can I repair this situation? Before starting this adventure I made a back-up of everything that was stored in the raid array.
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Sep 10, 2011
I have a broken DVD drive and no others available right now to burn a DVD iso to so I'd like to use a empty hard disk instead.
I've tried Unetbootin but that only copies a few megabytes of files - the rest of the image data in the ISO is ignored.
I have verified the ISO is valid and working with VirtualBox. It's MD5 hash is also as expected. But I need to boot at the real bios not an emulated one.
I've also tried things like:
sudo cat /disk/image.iso > /dev/sdb1
and that got "Permission denied" -
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Mar 8, 2011
I want to space out an item in an XFCE panel, however I don't want to add a hundred separators Is there a setting I can change to give the empty spaces some width?
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