Logical Volume Management provides storage abstraction, a generalization of disk partitioning.

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What is the proper way to shrink a LVM partition?

I want to shrink a Linux LVM partition from 200GB to 150GB. A test is carried out with the following steps: Shrink a file system in a logical volume with reszie2fs Shrink the logical volume with ...
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356 views

Open luks-encrypted partition from virtual DomU LVM disk containing another LVM

I've gotten myself in a bit of a bind, here. A while ago I set up an encrypted Unbuntu 13.04 under Xen. It's virtual disk is an LVM LV. This LV was presented to the DomU as a (whole) physical disk ...
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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 ...
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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 ...
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1k 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 ...
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Command 'pvs' says PV device not found, but LVs are mapped and mounted

I had problem with my system (faulty internal power cable). When I got the system back up and running, arrays rebuilding, etc, I seem to have a situation where the pvs command (and vgs and lvs) ...
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156 views

Luks Partition Mounting After Removing From fstab

I have 3 encrypted partitions, one for /, one for /home, and one for swap. It seemed silly to me to type in my password 3 times, so I replaced the swap partition with a swap file on the encrypted ...
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2k views

I can see my LVM but I can't initialize it. Missing UUID of one of the disks

I have had a 2 disk LVM called Data going for about 6 months, and I recently bought a third disk. I installed the disk in the machine, and wanted to format it and extend the lvm onto it, like I've ...
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2k views

Using LVM with SSD and SATA drives

I saw in this question that it is possible to place both a SSD and a standard SATA hard drive into a single LVM volume group (VG). How does this affect performance? Is there a way to force the OS ...
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LVM - Recovering from partition table corruption

I accidentally deleted a partition on a physical disk that was involved in an LVM system. I tried using testdisk's analyse feature to find the LVM partition, but it couldn't locate it. Should I invest ...
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Corrupt LVM metadata header after kernel update

I'm running Debian Wheezy (Linux wheezy3.2.0-4-amd64 #1 SMP Debian 3.2.63-2+deb7u1 x86_64 GNU/Linux) as an encrypted LVM with hardware raid 1 (Adaptec 6405E) on a supermicro server. I was encounting ...
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280 views

LVM Encrypted Partition without Partition Table

I have the following Problem. My Laptop is fully encrypted with LVM I know the Passphrase, but the partition table is broken. I booted from an USB Stick in this Case sdb1. Is there any hope to get ...
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1answer
128 views

stdout redirect. sh: resource temporarily unavailable

I have large batches of bash processes. Each bash script invokes executeables which have their stdout redirected to distinct log files. About 5% of the runs end up with: sh: [name of log]: Resource ...
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177 views

Parititioning for a UEFI boot loader, can LVM be used?

I just bought a gently used laptop and I am trying to figure out why this is. It has a single SSD that when running fdisk -l shows as Disk: /dev/sda. Under it though are 5 "devices" under that disk, ...
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111 views

Replicate a complex partition structure with LUKS and LVM volumes

I have two external hard discs on an OpenSUSE 13.1 system. On one I have created a partition structure: An encrypted LVM partition (LUKS) Several volumes (10) on this LVM partition, some formatted ...
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726 views

How do I resolve an error when booting, “Couldn't find device with UUID…”

I have a RHEL 6 system, running on a VMWare machine. The admin of the VM server added a second RAID volume to the server, which my RHEL system does not use. Now, when I boot the RHEL system, I get a ...
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157 views

LVM - failed to install bootloader

I have Mint 16 installed on an LVM system. I originally had 3 logical volumes: lvswap, lvrootone, and lvstorage, with Mint 16 installed on lvrootone. I was hoping to use this scheme to upgrade and try ...
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477 views

Unable to close a Luks partition

For backup purposes, I have "snapshotted" a LVM partition. This partition was crypted so I have opened this Luks partition (snapshot) in order to do my backup. The problem is that I have forgotten to ...
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1answer
48 views

Verify that partition is encrypted

I just installed Debian and as far as I can remember I encrypted my home-partition using LVM. During the boot process I haven't been asked to enter the password. Is there any way to check whether ...
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168 views

LVM RAID 1 for root [closed]

I have LVM RAID 1 (not mdadm RAID 1, but exactly LVM2 RAID 1) for my root partition. I would like to make my system boot without either of the HDDs where the underlying PVs of the root LVM partition ...
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1answer
206 views

Having trouble with LVM snapshot

I have a funtoo linux machine which I am trying to add ubuntu to (thats a whole other issue). It is encrypted with luks and has lvm on top of that. I have a 2 TB harddrive (sdb) which I would like ...
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2answers
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Can you create a volumegroup in LVM that all the Logical volumes created under it will be thin provisioned?

I would like to know if it is possible to create a volumegroup in LVM that all the Logical volumes created under it will be thin provisioned? This will be used on RHEL 6 which does include thin ...
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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 ...
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292 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 ...
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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 ...
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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 ...
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1answer
668 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 ...
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Resizing LVM within a in KVM-based VPS

I have a VPS (based on KVM, not sure which storage technology) for about two years now. It's mainly a learning machine, a utility proxy, or a seldom-used VPN gate, or whatever--no real work, no ...
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2answers
439 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 ...
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479 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 ...
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238 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.
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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 ...
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2answers
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How to configure hard drive

I have a hard drive that is not configured, it shows this in fdisk -l: Disk /dev/dm-2: 107.4 GB, 107369988096 bytes 255 heads, 63 sectors/track, 13053 cylinders Units = cylinders of 16065 * 512 = ...
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1answer
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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 ...
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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 ...
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1answer
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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 ...
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2answers
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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.
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610 views

How to add existing normal partition into LVM in Linux?

I'm having a partition in Linux with some data, I want to add this partition into LVM, which is already running in the same system. What will be the step to do so?
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1answer
560 views

Replace hard drive in ubuntu

I know variants of this question have been asked before, but I couldn't find a specific answer to my situation. So here goes: Running ubuntu server 12.04 with the os on a separate drive and two 1,5 ...
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1answer
638 views

Decrypt second encrypted LVM during headless server boot?

I've followed this question https://unix.stackexchange.com/questions/5017/ssh-to-decrypt-encrypted-lvm-during-headless-server-boot and successfully remotely decrypted my root drive. However, I have a ...
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1answer
955 views

bootloader configuration with GPT, RAID1, and LVM

Using the GUID Partition Table and RAID 1, the bootloader (syslinux or GRUB) is not able to boot into the machine, which was installed with Arch Linux. First off, there are two drives identical ...
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1answer
674 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 ...
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1answer
10k 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?
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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 ...
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1answer
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/dev/mapper in fdisk

After installing CentOS, I see several lines like /dev/mapper/centos_jackpc--11-swap and /dev/mapper/centos_jackpc--11-root when I issue fdisk -l. What is the purpose of these? And why do they not ...
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1answer
55 views

Debian error message: “Unable to find LVM volume”, but then boots successfully

I was trying to encrypt all the HDD during the installation process of Debian 8 Jessie using full disk encryption + LVM, and I did it, but, there are a little "problem". Before the system asks me the ...
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1answer
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Can one physical disk provide space for several volume groups?

Can one physical disk provide space for several volume groups? Or one disk can have only one volume group in the Linux LVM? Can we use one disk in several VG's?
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space-efficient disk snapshots on Linux

I like the ability of VirtualBox to instantly create and restore snapshots and I was wondering, if it's possible to do similar things on the host machine. First I looked at lvm snapshots, but some ...
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2answers
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How to add a dm-cache to an already existing luks setup?

I've got two physical devices, a fast SSD and a large HDD. The SSD is in VG ssd and ends up serving as mountpoint /, the HDD is in VG dump and serves as mountpoint /home. Both go through LUKS for ...
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1answer
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RAID1 that can be enlarged when adding a new disk: convert to lvm --type raid1? [closed]

For the last ten years, I have been making inexpensive servers for small businesses. Each server has two identical drives mirrored with raid1. Later, SATA became available, then eSATA. In the ...