Logical Volume Management provides storage abstraction, a generalization of disk partitioning.
3
votes
1answer
349 views
Create a volume group from a logical volume instead of a physical volume
Is it possible to create a volume group from a logical volume instead of a physical volume? If so, are there any pitfalls in doing so?
Use case:
Installing OpenStack Compute on a a system that ...
3
votes
1answer
1k views
LVM2 partition alignment
How to do the following with Linux tools :
LVM partition alignment and alignment of partition on LVM ?
What in case where I want to setup LVM partition (for "pv") and then partitions ?
To be more ...
3
votes
2answers
560 views
Move root filesystem on a logical volume to a different disk
I'm trying to move my root LV to a new VG on my brand new SSD and it's driving me crazy. I think I pulled it off with rsync, but now grub is refusing to register the new boot option off of ...
3
votes
2answers
251 views
iSCSI device mapped to different SCSI device
I have an iSCSI disk array connected to a server (Ubuntu). When I login with
iscsiadm -m node --login -p 192.168.1.240
the device used to appear as /dev/sdb. I created a volume group with LVM using ...
3
votes
1answer
158 views
Create Logical Volume Snapshot at boot and before mount
I'm using Kubuntu 11.10 and before I upgrade to 12.04, I want to make snapshots of my filesystems. Coming to think of that, I realized that it can be very useful to create snapshots of logical volumes ...
3
votes
0answers
2k views
LVM2 can not wake up suspended logical volume
Read my story below.
I'm using LVM2 with following information:
Scan for VG:
# vgs
VG #PV #LV #SN Attr VSize VFree
unix 1 1 0 wz--n- 115.00g 45.00g
Scan for LV
# lvs
LV ...
2
votes
2answers
169 views
after adding one more physical volume and enlarging logical volume, grub fails
Several years ago I installed Debian on my 500 GiB hard disk. During installation I chose to have encrypted filesystem. So installer created one small unencrypted boot partition (I guess that grub ...
2
votes
2answers
2k views
How to Expand LVM2 Partition in Fedora Linux
I've been using Fedora 15 on a VMWare virtual machine. Over time, the disk space I initially allocated for the file system began to run out, only 12GB left. I've expanded the disk space an extra 25GB.
...
2
votes
1answer
164 views
Why are there symlinks in /dev? (LVM)
[root@SERVER ~] ls -la /dev/vg/root
lrwxrwxrwx 1 root root 17 2012-10-28 10:29 /dev/vg/root -> ../mapper/vg-root
[root@SERVER ~]
QUESTION: Why are there symlinks? Why there couldn't be only 1 ...
2
votes
2answers
179 views
LVM with SSD and SATA hard disks
Is it possible to create LVM partitions for both SSD and SATA hard disks? I mean if there isn't any conflicts.
2
votes
2answers
143 views
How come lvextend allocates less than the specified amount of space?
I am trying to extend a volume, let's call it /dev/vol1. I see the initial volume size is 500MB when I call:
df --block-size=M /dev/vol1
then to extend it 100MB more I call:
lvextend -L+100M ...
2
votes
1answer
131 views
Device node LVM
There is mention of a device node, when I was reading about LVM. I can't find anything useful as to what it is or functions as. Any help or suggestion of where to look would be appreciated.
2
votes
2answers
934 views
Which device is using this logical volume?
I'm trying to remove an LVM logical volume, which I believe is not currently in use.
However, when I attempted to remove it, I get an error:
# lvremove /dev/vg_service1/lv_home
Logical volume ...
2
votes
2answers
1k views
How to check LVM mirroring under Linux?
How can I check the LVM mirroring under Linux? E.g.: are there any mirrors on a given machine & some details about them, etc.
2
votes
2answers
2k views
How to change dm_crypt aes/256 LVM password after install?
I installed Fedora 14 & Ubuntu 10.04 LTS on my PC. I used dm_crypt/LVM with aes256 in both installs (2 VolumeGroups, each encrypted, so there is 2 separated & encrypted linux distro on this ...
2
votes
2answers
240 views
Does swap need to be on a contiguous LVM logical volume
I am setting up a machine to run a number of virtual machines. I am using a single HDD with a boot partition and an LVM partition. I read on the Arch wiki that logcial volumes which will be used for ...
2
votes
1answer
293 views
How to extend an ext3 partition over LVM inside a file (virtual machine)?
I need to extend the root partition of a virtual machine (VM) using LVM (Logical Volume Manager) . I can afford a few minutes of downtime so a VM shutdown/reboot is fine.
The virtual hard disk is in ...
2
votes
1answer
418 views
Equivalent to “copies=2” feature of ZFS in Linux with LVM
I have a laptop with only one HDD and is impossible add other HDD. The feature "copies=2" of ZFS is the perfect solution for to add redundancy to my /home in the laptop.
I would like emulate the ...
2
votes
1answer
3k views
How do I determine LVM mapping on a physical device?
I have a server (SUSE 11.5) that has two disks. There is only one volume group (vg01). How do I determine the physical device on which that vg exists?
2
votes
1answer
321 views
Can I alter my Fedora LVM LV to install a new distro as a dual-boot?
My question is almost a duplicate of this question, but not quite because that one is about ext3 and I am already using LVM. I have an older HP Pavilion laptop running Fedora 11. I chose Fedora ...
2
votes
3answers
259 views
How do I combine two logical volumes that reside on a single physical volume in LVM?
I have two logical volumes, one is mounted as /, the other is mounted as /home.
I want to combine them, because the / volume is constantly running out of space. (Yes, I know what's using all that ...
2
votes
2answers
97 views
Transfering whole linux system to a new disk
Few weeks back I installed linux as a virtual machine on my windows 7 system but I didn't gave much thought to(or miscalculated) the size of various partitions and even worse I'm not using 'lvm'. ...
2
votes
1answer
1k views
Uninstall the Encrypted LVM function to remove the prompted password entry during Ubuntu Boot
When I installed Ubuntu 11.04 and I was offered the option of enabling "encrypted LVM" for my hard drive. After choosing that option, I am prompted for my password during boot to decrypt the LVM.
...
2
votes
1answer
1k views
Devices get renamed when SATA disk attached
I have an HP xw8200 workstation running linux with two small, fast SCSI drives hooked up to the onboard LSI SCSI controller. The drives get labeled /dev/sda & /dev/sdb in /dev, respectively. I ...
2
votes
2answers
216 views
Recreated VG. Is it possible to add existing LVs to it?
I had a CentOS 5.5 server with two drives in it (sda, sdb) using LVM. sda had a combination of physical partitions and LVs. sdb had one volume group named data with multiple logical volumes. There ...
2
votes
1answer
167 views
Create Logical Volume with non-LVM partition
I'm not sure if the title actually depicts my question, but I will try to explain.
I have seen everywhere it is mentioned to create a partition of type LVM (8e) and then create logical volume with ...
2
votes
1answer
556 views
VBoxManage: Error: Can't be used as the requested device
I used the soluton from this thread but always i get
VirtualBox error: The medium 'lvol.vmdk' can't be used as the requested device type (0x80004005)
I've tried all controllers SATA, SCSI, IDE and ...
2
votes
1answer
633 views
How much can the space allocated for an LVM snapshot be reduced?
I created an LVM snapshot, then I modified the original logical volume, and now I see that I probably allocated too much space to hold the snapshot. And I want to reclaim some free space by reducing ...
2
votes
1answer
333 views
curious soft raid 5 setting inconsistency
Lately I bit the bullet and upgrade my OS from Fedora 11 to Fedora 15, and I've been trying very hard to figure out why Fedora 15 can't see the Raid setup that I created in Fedora 11. I think I must ...
2
votes
1answer
241 views
LVM tools on raw block copy
I have several raw block copies of disks that have both NTFS and Linux partitions. The parition tables generally have both a Windows NTFS partition and a Linux LVM partition. I need to work on all of ...
2
votes
1answer
33 views
Install grub on LV container for VM
I'm having difficult time installing grub in LVM LV container for a VM. This is the partition table:
# parted /dev/mgtvg/linux2os print
Model: Linux device-mapper (linear) (dm)
Disk /dev/dm-7: 129GB ...
2
votes
2answers
276 views
Change Partition Table with GParted
I have an Ubuntu 12.04 LTS server that has 6x600GB SAS drives in a RAID 5 configuration (Perc 6/i).
The partition scheme looks like this:
Partition File System Mount Point Size
/dev/sda1 ...
2
votes
0answers
68 views
LVM keeping harddisk awake?
I have a Lenovo W530 running Arch with kernel 3.79 (for bumblebee) and laptop-mode is configured properly and running. It has one SSD (sdb) and one harddisk (sdb). The sdb disk has two lvm-volumes: ...
2
votes
0answers
212 views
Recover MDADM Raid 5 in LVM with badblocks
I'm pretty sure I'm dealing with at stuffed RAID 5 array. Two of the drives were listed as failed in /proc/mdstat and mdadmdetails:
0 0 8 33 0 active sync /dev/sdc1
...
2
votes
0answers
111 views
Setup Cloudmin on Centos installed in LVM
I installed CentOS 6 with default LVM partition pattern. according to this pattern Can I use Cloudmin and store KVM Disks in LVM as Logical Volume? I think Cloudmin requires creating new logical ...
2
votes
2answers
2k views
New menu entry in GRUB2, “file not found” and “you need to load the kernel first” errors
I wanted to add new menu entry to my GRUB2 list. This is how I tried to do this and necessary info:
Erros after choosing "Debian Wheezy" menu entry from GRUB2 list:
error:file not found
error:you ...
2
votes
2answers
412 views
Recovery of data on raid5+lvm reiserfs partition, after raid5 problems
I've got a server with 3 sata hard drives. Each has 2 partitions: one small is part of /dev/md0, a raid1 array (/boot), rest is part of a raid5 array (/dev/md1), which is an lvm physical volume. ...
1
vote
1answer
2k views
Install Backtrack 5 r2 into running LUKS setup installed with ubuntu
One Harddisk (sda)
Two Partions. With a working ubuntu running.
1) /boot
2) LVM with this virtual volumes/partions/ or whatever they are called inside:
Swap
Ubuntu
Home
Prepared for Backtrack
Of ...
1
vote
2answers
258 views
How to Extend LVM in Redhat 5.6
I need to Extend the LVM on one server. This is the df -h result.
Filesystem Size Used Avail Use% Mounted on
/dev/cciss/c0d0p2 58G 26G 29G 48% /
/dev/mapper/VolGroup00-LogVol00
...
1
vote
2answers
261 views
How to resize logical volume to fit filesystem
How can I resize logical volume to fit filesystem automagically?
1
vote
1answer
99 views
Turn on Swap after resize /
I resized with lvresize the swap from 4 to 2G and can't turn it on.
swapon /dev/VolGroup/lv_swap
swapon: /dev/VolGroup/lv_swap: swapon failed: Invalid argument
lvdisplay /dev/VolGroup/lv_swap
...
1
vote
2answers
454 views
Moving /usr to its own filesystem/logical volume
My Fedora 17 (x64 - running on VMware Workstation 8) root filesystem is running out of space (this was an install using the default layout as suggested by the Fedora installer):
# df -h
Filesystem ...
1
vote
1answer
704 views
Combine LVM logical volumes?
It's a server with 128GB SSD.
There are two LVs, / and /home.
I want to combine them into one since the space is limited. I checked the HOW-TO but didn't found the tutorial for this task.
Any ...
1
vote
1answer
485 views
mdadm raid0 with disks of different size?
Currently I'm using LVM just to merge a few disks of different size. I want to know if it is possible to use mdadm with stripes instead of LVM?
Will it give me additional performance? Will it use ...
1
vote
2answers
45 views
Transfer a Fedora system to another computer
I'd like to transfer my Fedora to a remote machine. Fedora is under Grub 2.0 and on the remote machine there is a Centos system and Grub 0.97. In fact, I have two questions.
First is how to properly ...
1
vote
1answer
80 views
Reading encrypted partition with broken LVM2 inside?
I overwrote some LVM2 metadata in much the same way as Recovering overwritten LVM metadata . That is, I attempted to install Debian 6.0.7 on a system with existing encrypted volumes and LVM2 volumes.
...
1
vote
2answers
44 views
Should I be worried? Segfaults reported in syslog when merging LVM snapshot (reverting the original back to the snapshot)
I was just experimenting with snapshots in LVM on Ubuntu 12.10. I created a snapshot logical volume of 6.5 GiB, and after making some changes to the origin decided to merge the snapshot back in to ...
1
vote
1answer
293 views
fdisk isn't showing my hard drive as properly formatted (but it is)
I've got 3 1TB drives which I've set up to use LVM. Here's the output of pvdisplay:
--- Physical volume ---
PV Name /dev/sda1
VG Name vgpool
PV Size ...
1
vote
1answer
297 views
Need to change the mount Point of LVM /u001/app/oracle to /u001/
This is the situation.I installed the RHEL 5.5 on client's system and created LVM mount point at /u001/app/oracle and now he has installed DB on /u001/app/oracle. He is asked me to change the mount ...
1
vote
2answers
356 views
Must the filesystem be unmounted while extending an LVM logical volume?
I have seen some tutorials on extending an LVM2 logical volume. None of them instruct you to unmount the filesystem. They claim that you can extend an LVM volume while it is in use. Is this right?
