General :: Create A Logical Volume Of 18TB In Size?
Dec 1, 2010Is it possible to create a logical volume of 18TB in size? I was able to create the volume group but I'm having issues with the logical volume.
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Fedora :: Re-size Logical Volume And Then Re-size File System?
Jan 19, 2011is lvresize with --resizefs options re-size the Logical Volume and then re-size the file system? i mean we don't need to use resize2fs?I looked at man pages but it doesn't explain this option.
View 3 Replies View RelatedRed Hat / Fedora :: Extend Logical Volume (LogVol) Size In Same Group?
Jun 23, 2011My LogVol00 has 1 Tb free space. Now I want to share 500gb of LogVol00 to LogVol04. How can I do this?
View 1 Replies View RelatedSoftware :: Create A Network Logical Volume Based On The Individual HDs And Visible To All Boxes?
Aug 11, 2010i've been an intermediate-level linux user for some years, and now i'm supposed to set up and manage a small network for our research group. we have 5 linux boxes with ubuntu 10.04 (actually i'm installing everything we need in one box and will attempt to clone the others with clonezilla). i've 2 questions:
1) i'd like to manage all user accounts from one pc (server? so to say), so that every user can log in any of the 5 machines with the same passwd etc. what is the best/easiest/most stable application/protocol to manage this?
2) is it possible to create a network logical volume, based on the individual HDs and visible to all boxes? something like a RAID0 over ethernet?
General :: Move / Copy A Logical Volume From One Volume Group To Another?
Dec 1, 2010I'm rearranging a bunch of disks on my server at home and I find myself in the position of wanting to move a bunch of LVM logical volumes to another volume group. Is there a simple way to do this? I saw mention of a cplv command but this seems to be either old or not something that was ever available for linux.
View 2 Replies View RelatedFedora :: Home Partition And Create Logical Volume Out Of 53 Gb Filesystem Partition?
Aug 24, 2010I installed fedora 13 64 bit and it works great but I encountered several issues when setting up guest OS with KVM. The problem seems to be related to selinux. But let me first ask question about logical volume. By Default fedora created logical volumes:
[Code].....
"If you expect that you or other users will store data on the system, create a separate partition for the /home directory within a volume group. With a separate /home partition, you may upgrade or reinstall Fedora without erasing user data files." seems to suggest I have to create a separate physical partition and assign that to /home. But reading elsewhere it seems to suggest logical volume acts like a partition. My goal is to make it easy in case fedora is hosed and I have to re-install it without affecting /home where my cirtical data resides. Given above do I need to create a separate physical partition or I am just fine?
I have a second hard disk that originally had windows and all my data. Windows is hosed but I can see my data from within Fedora and Windows is gone and I created created new partition in its place which used ot be the C:/ drive appears as 53 Gb filesystem. My data which was originally D drive appears as 215 GB filesystem. As given in [URL] I want to create a new logical volume in 53 Gb filesystem which I want to use as space for virtual disk to install guest OS's in KVM. Currrently 53 GB filesystem is mounted as /media/3467BH89JK789 but this does not work well with KVM. how do I create this logical volume out of 53 Gb filesystem partition and add proper selinux info and do I add to vg_vostrolx volume group and in a different volume group?
General :: How To Know Which Logical Volume Owns A File
Jul 14, 2010Hi. We have a cluster consisting of 10 logical volumes all part of one filesystem. Is there a way to know which logical volume owns a certain file/inode? I have tried what is suggested at this link, but the output is the filesystem and not a specific logical volume.
View 6 Replies View RelatedCentOS 5 :: Add New RAID Volume To The Existing Logical Volume?
May 7, 2011I have a system with a 2TB RAID level 1 installed (2 x 2TB drives, configured as RAID1 through the BIOS). I installed Centos 5.5 and it runs fine. I now added another 2x2TB drives and configured them as RAID1 through the BIOS.
How do I add this new RAID volume to the existing logical volume?
General :: Different Sizes In Data After Resizing Logical Volume?
Jul 7, 2010I recently resized one of my Logical Volumes that contained 160MB data from 500MB to 6.5GB. After resizing it, I checked the size of the data via 'du -sh' and found that my data had reduced to 143MB.
Fortunately, I backed up the the 160MB of data on another partition before resizing the Logical Volume. I ran 'diff' on both directories holding the 160MB and 143MB, but there was no difference detected.
how come there is a 17MB difference after resizing?
In case you're wondering how I performed my resize, this is what i did:
e2fsck -f /dev/VolGroup01/LogVol00
lvextend -L +6G /dev/VolGroup01/LogVol00
resize2fs -p /dev/VolGroup01/LogVol00
General :: Resizing Initially Installed Logical Volume?
Oct 26, 2010Back in the day, I foolishly installed my Fedora server with the default logical volume layout on one physical volume. Knowing now that this is a huge waste of space (partition is large) I'd like to reduce the logical volume and somehow detach this now unused space and mount as a normal partition. Is this possible? Only 20GB of the 160GB has been used for the OS. Home partition is on a secondary disk.
View 9 Replies View RelatedGeneral :: Secure Installation Of Debian Using Logical Volume Manager
Aug 31, 2011I am installing Debian for the very first time and having read websites similar to [url] I have come across parts of the installation which I do not understand.
For example, I have created logical volumes using the logical volume manager however am unclear what the message regarding writing changes to disk before configuring Logical Volume Manager means.
Once I have created the volume group, I am presented with a window that provides me with the ability to
Display configuration details
Create volume groups
Create logical volume
Delete logical volume
Extend volume group
Option 2 is pretty self-explanatory however am unsure whether it is advisable to segment directories between 2 or more volume groups. What benefits does it serve?
Option 5 provides me to extend a volume group however am unsure how this works?
Does it mean I can assign free space available one 1 physical drive to the existing volume group or does it mean I can assign free space available on a second phyical drive or does it mean both? How does it affect security, performance, etc?
Currently the only way I can see the logical volumes I have created by selection Option 4. Is there any other way? How do most people keep track of the logical volumes they have created e.g. checking off against a checklist, etc?
Next I have the ability to map the logical volumes to mount points however am confused what purpose the none mount point serves as I have the option to select it?
What are mount options for?
What do I use labels for?
What are reserved blocks for?
What does typical usage refer to?
How does the option to copy data from another partition work? What is it for?
General :: Cloning Logical Volume And Swap And Boot Partitions?
Feb 28, 2011I have a RHEL4 system with 2 250GB physical volumes. There is a boot partition that is outside LVM and 2 logical volumes (swap and root) within a single volume group. This volume group bridges the 2 physical volumes.
I would like to clone this system onto a single 1 TB physical volume that will replace the 2x250GB currently in use.
General :: Merging Logical Volume Groups - Initial Setup
Oct 21, 2010I am very new to LVM, as well as not especially experienced at linux, and have some questions about how lvm works. A few months back I set up a server running FC10 and tried creating Logical Groups during the the initial setup. We've realized that we are not using all the available space on the physical drive, and I realized that for some reason (I'm thinking this might have been the default?), we initially created two Logical Groups (VolGroup00 and VolGroup01) and it appears two Logical volumes in each (LogVol00 and LogVol01). LogVol00 in VolGroup00 is mapped to /, and the other Group was actually unused. I figure that it would be simplest to just use all this space mapped to /, so I thought the thing to do would be to simply merge VolGroup01 to VolGroup00. I tried this:
[root@office mapper]# vgmerge VolGroup00 VolGroup01
Logical volumes in "VolGroup01" must be inactive
So after a bit of research, I tried this:
[root@office mapper]# vgchange -a n VolGroup01
Can't deactivate volume group "VolGroup01" with 1 open logical volume(s)
So apparently There's an open volume, but I don't know how to go about closing it. I removed the LogVol00 from that group, but LogVol01 won't budge.
[root@office mapper]# lvremove VolGroup01
Can't remove open logical volume "LogVol01"
So how do I go about closing this Volume? At one point, there was some output that told me LogVol01 was being used as swap space. How do I handle that?
General :: Read The Contents Of A Physical Disk That Was Part Of A Larger Logical Volume?
Mar 17, 2010how easy it would be to read the contents of a physical disk that was part of a larger logical volume. The disk contains a "Linux LVM" partition that spans its entire size. My problem is that one of my disks died, and I have to send it back for a warranty replacement. However, the disk is dead, and I can't zero it out. I'm just trying to assess how difficult it would be (or at least how likely it would be) for a tech that's checking out the disk to get at the data.
View 4 Replies View RelatedFedora :: Managed To Reduce The Logical Volume To Free Some Space But Cant Seem To Reduce The Physical Volume
Jan 1, 2010so i have f12 installed on my hd with lvm using the whole extent of the HD , i want to reduce it so i can dual boot it with a windows system, i managed to reduce the logical volume to free some space, but i cant seem to reduce the physical volume, is this possible and how ?
View 2 Replies View RelatedGeneral :: Cannot Create Logical Partitions Without Errors
Jan 14, 2010I have run into a Gparted problem that I am not familiar with. I've never seen it before.
I cannot create logical partitions without errors or not at all. I have two choices:
1) not checking 'round to cylinders' - I will get an error* and it will not partition
2) check 'round to cylinders' - it will partition but I will also obtain 4MB of unallocated space (each time)
This applies to Primary partitions, too, I think. At least, #2 will happen.
Imho, this is ridiculous. Why would I retain 4MB of unallocated space? In other words, the two choices above are not choices.
The error message doesn't explain much if anything either. *"Unable to satisfy all constraints on the partition"
Hardware :: Lvm - What Is A Logical Volume?
Aug 4, 2010What is a logical volume? Why should we have them? Is there no need for grub on such a system? All kinds of problems since I tried to install Slackware!
View 3 Replies View RelatedGeneral :: Setting Size Of LVM Volume?
Mar 7, 2011I am installing Ubuntu server 10.10 onto a machine with a 1 tb Hard drive. I have had a host of other problems installing but that is for another thread. My question here is that it takes so long to format such a big drive, and I have heard and read that LVM starts with a small partition and expands it as more room is needed. So the installer crashed and started over so this time I decided to choose 'Guided - Use entire disk and set up LVM' instead of just 'Guided - Use Entire Disk'. So it is asking me to set the size of the LVM Volume. Am I setting the size of the initial volume? or am I setting the max size the volume can expand to?
View 14 Replies View RelatedUbuntu :: In Which Logical Volume Is A File?
Jul 13, 2010I have cluster of 3 logical volumes making a filesystem, is there a tool or command out there that could tell me in which logical volume a file is?
View 3 Replies View RelatedRed Hat / Fedora :: LVM - One Of Logical Volume Getting Full
Apr 7, 2010I have a Fedora 8 system that uses LVM on one of it's drives (/dev/sdb2). One of the logical volumes is getting full (LogVol02). There is an unused, unmounted logical volume (LogVol03) available. I can see two possible options.
1) Mount the unused logical volume (LogVol03) on a new mount point (/home2) and create more space there
2) Delete the LogVol03 logical volume and extend the nearly full volume (LogVol02) into the now available space.
Option 2 seems like the better approach, since it will seem seamless to the system users. I'm looking for suggestions on how I should go about doing this and what I need to look out for. Is it better to use the command line tools (lvm ...) or the GUI (system-config-lvm) to do this?
Fedora :: Root Logical Volume Ran Out Of Space?
Nov 13, 2009 My computer: (Lenovo T61 Thinkpad, running fc11 for about 2 and half months). Apparently I when I made my partitions I didn't leave quite enough room in my root directory, because I just completely ran out. Here is how my hard drive is partitioned:
1 physical volume group (sda)
4 logical volumes (home, root, swap, var)
The root had about 15 gigs on it, which just filled up. When I restarted to see if that would help, when it rebooted it went fine up to the log-in screen. Instead of the usual fedora blue background, it was black except for the log-in window, which looked very low-res. A little pop-up kept coming up saying the GNOME power configuration settings failed to load or something. When I logged in, the whole screen was black except for the mouse, and I could get no response. I have plenty of space left in home, so I rebooted to rescue mode using the first fedora installation disk, and tried the following command:
Code:
lvreduce -L90G /dev/mapper/DRIVE
which only returned:
Code:
lvreduce: relocation error: lvreduce: symbol dm_tree_node_size_changed, version Base not defined in file libdevmapper.so.1.02
So I couldn't reduce the size of home, and thus couldn't increase the size of root.
IN SUMMARY:
a) the lack of memory in root the probable cause for my computer not working
b) there a good way to reduce home and increase root while running this live disk
Note: When I am looking at it now in the logical volume manager, it says that on the whole physical volume there is only 400MB free. However, when I last looked (about 30 mins before I started having problems) it said there were about 100 Gb free.
Edit: Nevermind. I did some more research and it turned out to be more of a gnome power manager thing rather than a memory space thing, although I'm certainly going to increase my root memory now.
Fedora :: Logical Volume Disappeared And Took / Root With It?
Jul 22, 2011I've got a big problem. Earlier this afternoon I tried to unlock my screen, but the password dialog didn't appear (the background did, and I could move the pointer, but no dialog). So I restarted the computer, only for the Fedora bootup icon to get about 3/4 of the way full before the screen blanked out and I got the message "Boot has failed. Sleeping forever." I booted into the liveCD and opened the system installer to see if maybe I could just reinstall the system in place while leaving my data intact. When I got to the partitioning stage, my old partition layout was there...except one LVM volume group was totally missing. And this is the volume group that contained my / and /home, among other things. Another volume group sitting on a different RAID was still there, but ironically it was the one for short-term data.
I have three hard drives, using soft RAID and LVM. Each drive is split into 4 partitions. The first partition of each is part of a RAID-1 where /boot sits. The second of each makes up a RAID-5 on which sits my "Main" volume group for my important data (this is the one that has gone AWOL). The third of each makes up a RAID-0 on which my "Volatile" volume group sits (for /tmp, /var/tmp, and the like). The fourth is swap.
Is there any chance I can restore my volume group so my data can be recovered? I'm not sure if I've got the full layout with volume sizes written down anywhere.
Ubuntu :: How To Restore Deleted Logical Volume
Jul 30, 2010I have 3 harddisks, 1 for system and 2 for data.
To manage it more easy, I tied 2 harddisk in LVM. And I made an logical volume. It used ext4 for it's filesystem.
Today, I wanted to format and reinstall the system. So I booted the system using Ubuntu CD. But managing the partition, I accidently delete the logical volume. Because backup(/etc/lvm) was in itself, I couldn't restore the old config. I just create new logical volume.
As I expected, I couldn't mount it correctly. Mount said that "Mount: Mouting failed A on B! Invalid argument!"
I must recover it, because it has a lot of import data. What should I do?
Red Hat / Fedora :: FC10 - How To Extend Logical Volume
Mar 6, 2011I have a system with a single disk that is partitioned as below:
1) hda
hda1 - boot partition - 0.3GB
hda2 - System - 15.7GB
There are 2 volumes on single group. The boot partion is a physical volume and the system is a logical volume. The disk has more room up to 40GB. How can I extend the logical volume. Tried system-config-lvm, but it does not gives the option.
Server :: Identifying What Is Using Up Space In Logical Volume?
Jun 14, 2010I just read and learned about logical volume management today. I have a server running RHEL5.4, LVM2. I have 1 physical volume, with one volume group, and 3 logical volumes. I have no free extents, nor do I have any in my volume group (not sure if it's possible to have free in one and not the other anyway), and I am running out of space on one of my logical volumes. Doing a df -h shows 96% of 9.7GB used on /dev/mapper/MainVG-root, mounted at /. So here's the stupid question: how can I find out what directories/files are taking up what space within this logical volume? As I said I have 3 all together, and the other 2 are mapped to /var and a /var pgsql sub-directory. I figured I could get the sizes of the other directories under / and drill down accordingly, but I seem to be missing some basic rule because the commands I am using and the values I am getting don't add up.
For example, it seemed logical to me to do an ls -lsh on / to try and identify the largest directories. Each directory is listed as being ~4-8K in size. That doesn't make sense to me. So I decided to do a du -sh on each directory. Having done this on all of the / sub-directories and added up those values, there is not enough reported usage here to equal 8.9GB of used space (as df -h / reports).how they would find out how the 9.7GB here is being allocated? Preferably without scripts as I am not ready to add a layer of complexity to this yet without understanding some fundamentals.
CentOS 5 :: Reducing A Logical Volume Mounted As /?
Jan 15, 2010I'm wondering if there is a way to shrink an ext3 LV mount as / .I tried to with resize2fs ... but seems that isn't possible if the partition is mounted.
View 8 Replies View RelatedCentOS 5 :: Logical Volume Greater Than 16TB
Apr 8, 2010I have a huge RAID6 array 21TB+ already partitioned in GPT. This is to be used as the storage location for my company's backup server, and I want to access it as one logical volume. Is this possible with Centos5? I just discovered the product specifications for Centos5, and saw that the maximum file system size is 16TB, but LVM2 should support volumes up to 1EB. Is there any way I can make this work in Centos, or am I going to have to run a different distro?
View 1 Replies View RelatedFedora :: Logical Volume Exists After Uninstalling Virtualbox?
May 4, 2011I (again) ran into trouble since two months i was trying out fedora lovelock "nightly build" in a virtualbox my host is Ubuntu 11.04 (previously 10.10 i upgraded yesterday) (had worked fine .. just was slow because i alloted only 512 MB ram) ... now i uninstalled virtualbox and deleted .virtualbox in home folder, but i couldn't recover my 8 GB space when i installed i made virtual disk fixed storage (my mistake i guess!! ) ) i don't know much about it either .. just wanted to try out fedora 15 so experimented it using virtuallbox ...
i'm running out of disk space (don't have bucks to purchase external hard disk .. otherwise i wouldn't have cared .. also don't have time to do a reinstallation of ubuntu/some other os (may be fedora) on my laptop ...
i just got 24 GB left .. i intend to store a few more movies and songs .. i would run out of disk space fairly quickly ... 8GB would be buffer if i get it back ...
OpenSUSE Install :: 11.0 Raid5 LVM Logical Volume Not Mounting?
Apr 22, 2011I have a raid 5 with 5 disks, I had a disk failure which made my raid go down, after some struggle I got the raid5 up again and the faulty disk was replaced and rebuilt itself. After the disk rebuilt itself I tried doing a pvscan but could not find my /dev/md0. I followed some steps on the net to recreate the pv using the same uuid then restored the vg(storage) using a backup file. This all went fine.I can now see the PV, VG(storage) and LV's but when I try to mount it, I get a error "wrong fs type" I know that the lv's are reiserfs filesystems, so I did a reiserfsck on /dev/storage/software, this gives me the following error:reiserfs_open: the reiserfs superblock cannot be foundNow next step would be to rebuild then superblock, but I'm afraid that I might have configured something wrong on my raid or LVM and by overwriting the superblock I might not be able to go back and fix it once I've figured out what I didn't configure correctly.
View 5 Replies View RelatedUbuntu :: Logical Volume Sorting Individual Files?
Jun 5, 2011So I just had a quick question on logical volumes and such with ubuntu. I've been looking into setting up a storage array of 4 2tb hard drives for media storage in my house but have ran into a wall with with sort of array i should use, whether it be setting up a full raid system (raid 5 or 10 most likely) or using LVM for stripping. The one thing with LVM however, is that there is no parity or redundancy built into it in case 1 hard drive fails. I was wondering if it was possible to create something similar to that of LVM stripping, but instead the logical volume is sorted into whole individual files, not stripping them across the array. That way, if one drive fails, sure, i lose the contents of the one drive, but the rest of the content isn't lost and I have no loss of space because there is no inherent parity.
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