In computer storage, Logical Volume Management or LVM provides a method of allocating space on mass-storage devices that is more flexible than conventional partitioning schemes.

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udev rule for disconnection and hibernate/suspend

I have an external hard drive which contains different GPT partitions. One of them is a LVM partition. This partition is contained in a LVM volume group (called "volga"), which in turns splits into ...
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LVM: “Couldn't find device with uuid” yet blkid finds the UUID

I have a SLES 11.2 PPC (3.0.58-0.6.6-ppc64) system that lost track of its volume group (containing LVs with data that is not critical but would be rather nice to get back). The disks are connected ...
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79 views

LVM Snapshot confusion

I think I understand some of the lvm snapshot concept, but am confused about one last thing. After you take the snapshot, if you don't mount it, will it be active? What I really want to know is will ...
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244 views

Why does my lvm physical volume have significantly less space than the partition it contains?

I'm on centOS 6.4. I have a 39TB hardware RAID configured as RAID 6. I created a single 39TB partition with parted. It reports: (parted) print ...
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4answers
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What does an LVM2 Snapshot contain? [duplicate]

Everything I read makes me think an lvm snapshot is a direct copy of the logical volume that was snapshot(ed), but how can that be when it takes 10 seconds to snapshot a 90 gig logical volume? If I ...
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115 views

Adding disks to and resizing a LVM

I'm managing a virtual cloud server on EC2 for a client which has the requirement of expandable storage. Currently, I have a 1TB EBS drive mounted at /mnt which I need to expand. Since 1TB is the ...
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How to determine optimal size for LVM snapshot?

I'd like to create a backup script that uses LVM snapshots during backup. This script will run on several Linux machines. I'd like to avoid creating snapshot that is too small and gets full during ...
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115 views

How to resize LVM group wheen 4 partitions already in system?

Centos, I have already expanded Virtual disk in Vmware, now i need to add additional space to LVM Group but most tutorials out there are saying to create new partition and add it to LVM. Since there ...
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367 views

Setting up LVM Volume Groups… hang

My Debian 7 System dosn't boot anymore. The boot stop with a kernel message like thisMy Debian 7 System dosn't boot anymore. The boot stop with a kernel message like this: [.....] Setting up LVM ...
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46 views

LVM reduce from one Logical volume and add it to another

i am having two volume groups vg1 and vg2 on vg1 i am having two Logical volumes LV1 and LV2 ,LV1 is full and LV2 is having more than 60% free space. Is it possible to reduce Lv2 and then using that ...
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53 views

identical drivers different pv size

i've got strange situation with identical drives: pvdisplay --- Physical volume --- PV Name /dev/sda5 VG Name group1 PV Size 465.52 GiB / not ...
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324 views

Physical disks comprising a Volume in RHEL

How do I list the physical disks and associated information (disk model, size, etc.) for all disks that are members of a physical volume in RHEL? For example, if I do I "pvscan", I get the following ...
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260 views

Ubuntu 10.04 Server stuck at grub prompt

I have a virtualized server running 10.04 LTS that is no longer booting. We had a number of issues with our SAN that abruptly disconnected the storage from the virtual machine infrastructure and ...
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1answer
222 views

LVM+MongoDB. Dropping in speed of backup creation

Till recent time we have been making mongo backups archiving LVM snapshot on hidden SECONDARY server with RAID10 on SAS disks. Currently operation on making snapshot from volume with 500 Gb of data ...
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1answer
59 views

Are blocks that are read from LVM kept in Linux's block cache?

Does Linux keep blocks that are read from an LVM logical volume in the block cache as it does with blocks read from a "regular" block device or is the IO direct? Also, do the usual buffering ...
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137 views

Logical Volume Recovery

I have a machine with 180 or so logical volumes as well as an OS partition that were wiped out with a format when reinstalling centOS6. I made a terrible mistake, not being familiar with the interface ...
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1answer
110 views

Does Ubuntu 12.04 LTS support booting from RAID 6?

I'm setting up a new Ubuntu server using 12.04.2 LTS. I have five drives that I am setting up in a RAID 6 with LVM. Can I use this for bootup? Or should I make a separate RAID 1 partition for bootup ...
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2answers
359 views

can't resize root at Ubuntu Server 12.04 LTS

I've done lvresize -L 264G 101/root (was 15GB) but /dev/mapper/101-root shows 13Gb. What am I doing wrong? I really appreciate the help! root@server1:/home/user# df -h Filesystem Size ...
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121 views

Recovery RAID array LVM

I have a NAS, the unit became unresponsive so after some research I pulled the drives out of the box, and hooked them up to my Ubuntu box. I now see all 4 drives, and all 4 partitions on the drives. ...
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1k views

How to increase Free PE in LVM physical volume?

I use Proxmox 2.2 for making OpenVZ containers. It ships with a tool called vzdump that can create backups of OpenVZ containers on the fly. It uses snapshot functionality of LVM to create temporary ...
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1answer
210 views

how to resize ufs partition on linux

is there a way to resize a lvm partition after processing dd command? /dev/vg0/disk1 is 1G /dev/vg0/disk2 is 5G after a dd partition, the size of /dev/vg0/disk2 become 1G. dd if=/dev/vg0/disk1 ...
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635 views

kickstart partitioning error with LVM

In Kickstart, I keep on getting the error; Adding this partition would not leave enough disk space for already allocated logical volumes in vg_ibus I do not get why I am getting this error. ...
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1answer
436 views

How to automount lvm on startup ubuntu?

I'll start some background that can be skipped: I have an ubuntu machine that I installed some time ago with the default partitioning on a an 80GB hard drive. The machine runs has rTorrent that starts ...
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1answer
120 views

How to create new logical volume by taking the space from an existing one

I am new to the world of logical volumes. I have installed a Linux (CentOS), and the installer created an 50 GB root logical volume (mounted at /), and a 475 GB home logical volume (mounted under ...
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64 views

LVM can I extend a logical volume across 2 volume groups?

I resized my /opt which was the only logical vol in vg2 but I want to give that freed space back to / which is on vg1. Is this possible? pvscan output below. I want to grow my / partition which is ...
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662 views

DRBD LVM - backed vs. physical & LVM filter

We're experimenting with DRBD/pacemaker on top of an existing Debian 6 Encrypted RAID1 setup. We have one comparatively general and one comparatively specific question: 1) DRBD - backed vs. ...
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57 views

Volume group not created

I have a Professional XXL with 2x 1TB HDDs (1TB RAID) server from velia.net and i want to create a volume group in it but when first i create pv it's showing. [root@xen17 ~]# pvcreate ...
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773 views

PacemakerDRBD Mount Issue

We are stuck trying to get pacemaker to work with DRBD, and having tried various alternatives can't get our "drbd1" to mount and get some errors. NOTE: we are trying to get pacemaker to work with an ...
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1answer
646 views

I can't mount a LVM snapshot on a XEN host

I'd like to backup my XEN VMs by copying-rsyncing a LVM snapshot. I'm trying to mount a snapshot that contains a XEN guest's virtual disk (ext4). Below are all the steps I follow. I can't mount the ...
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277 views

8kb block sizes as it relates to different storage layers

I have a PCIe SSD card that uses 8kb block cells. It supports "Virtual Controllers" that can split this drive in half and create LVM RAID0 with 8kb stripe size. On top of that I install a file system ...
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2answers
393 views

What kind of performance overhead with LVM on Fusion ioDrive2 as Oracle DB 11gR2's Flash Cache?

This is a bit wordy, so please bear with me. :) We have a RAC cluster of 3 Oracle 11gR2 servers and purchased FusionIO ioDrive2 PCIx cards for these servers to use as OracleDB's Flash Cache. These ...
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121 views

Convert clustered LVM volume group to stand alone

I am running clustered LVM, and I need to convert my cLVM VGs back to stand alone. It appears that I should be able to run "vgchange -c n " with out losing any LVs. The only thing I need to do is ...
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53 views

Postfix smtp redirected and not sending

I'm new to this so please go easy if I don't explain it lugubriously. I'm admin'ing a debian based KVM/LVM server. It has several VM's on it but two that are the problem. Recently I had to clone VM A ...
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1answer
808 views

Grub2 reports physical volume pv0 not found on server non bootable anymore

I first installed my ubuntu server (11.10 amd64) using lvm but not fully mastering the concept of it. I think that's partly what made the mess of partitions on my two disks (seems to me). I installed ...
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1answer
2k views

Guest system managed by libvirt doesn't start after successful installation

Host system — Ubuntu 12.04. Virtualization — KVM. Disks — LVM. Guest system installation was successful. But after restart: Booting from Hard Disk... Boot failed: could not read the boot disk ...
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1answer
1k views

How to increase the inode size

I have Ubuntu 11.10 Server 64bit. my clients upload a lot of small xml files on my server. and my business needs all of those files. I have storage space, but the problem is in inode size. by running ...
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1answer
136 views

scripted resize kvm images

I'm examining the possibility to script the resizing of a kvm image. The goal is to give our customers the possibility to upgrade their vps online. So for instance if a customer has a vps of 10G then ...
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418 views

Trouble enlarging a lvm2 partition - “New size matches existing size”

I have a VM running Ubuntu. It used to have 30GB of space; I need to increase the size of the data partition, a LVM2 one, to 50GB. I changed the size in the VM's management console and this is what ...
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180 views

LVM in cluster — need an advice

I'm trying to configure a 2 node cluster with shared storage, but the configuration is probably little unusual. It is described below: Both nodes have access to a shared storage that has a number of ...
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1answer
313 views

Can I get rsnapshot to create LVM snapshots on a remote machine?

I'm currently running rsnapshot on host1, backing up some files from host2 using the inbuilt SFTP support (I have daily, weekly, and monthly backups running in a standard rsnapshot configuration). ...
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1answer
1k views

Centos 6.3 disk space allocation

Apache can use only 50GB, so if my websites go over this amount the server crashes. THis VM has 200GB allocated to it. But I did not set up the volumes correctly. How can I allocate some of the space ...
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Solution to manage data server with multiple drives

I'm looking for some pointers on the best way to manage a Linux data server, with 20 hard drives and with new files always being added (around 30GB/day). Performance is not important, reliability is ...
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3answers
294 views

Linux VMware data store larger then 2TB using lvm?

I'me trying to think of the best way to create one logical volumne on a linux VM to be over 2TB. I need to make one logical volume that is 8TB and have access to this amount on the my SAN. I know ...
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2answers
861 views

Migrate guest from KVM to VirtualBox

I'm migrating some machines from KVM to VirtualBox for a transitional period while we build our new virtualization environment. The problem now, the disks are located on a LVM partition, and I have ...
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1answer
241 views

Resize LVM partition DomU Windows

I have a xen DomU running with Windows Server 2003 on a lvm partition has 10GB but i need more. if a Linux partition, I would do: # umount # lvextend -L +10G /dev/<VG>/<LV> # resize2fs ...
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1answer
125 views

Mount file systems from complete disk image with several partitions and logical volumes

I have a complete disk image (dd if=/dev/sda of=foo.bin) that contains several partitions and LVM logical volumes on which there are ext4 filesystems. How do I mount one of the filesystems on this ...
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364 views

Reduce root LVM Parition Centos 6.3

I installed Centos 6.3 as a KVM guest OS, and used the default partition settings. Now I noticed that my / partition is 50GB and my /home is only 20GB. I want to increase my /home to atleast 50GB and ...
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1answer
65 views

Arch Linux on Software RAID, can't find VolGroupArray

I am trying to install Arch Linux on a Software RAID that I am building following their instructions on the Wiki. I built as far as the Logical Volumes and after that switched to the Installation ...
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169 views

Debian: preseed partitioning results in deadlock

I'm using this code in my preseed.cfg for debian testing (wheezy): #Partman partman-auto partman-auto/init_automatically_partition select 50some_device__________regular partman-auto ...
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236 views

LVM failure recovery

We have an server PC with "intel matrix storage manager" raid (or maybe 'fake' raid) controller. Firstly there were one RAID-1 with two equal seagate disks of 1TB size. We've installed ubuntu server ...