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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Extending Linux LVM partition

I was following this link to extend a Linux LVM partition on a remote machine, but the Internet connection went out and I don't know if the partition was created. Can you help me determine if the new ...
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Increasing LVM to use all free space on virtualbox/debian

I've cloned and resized a disk image for VirtualBox but I can't find a way to use all the new space. this is how I started: fdisk: Disk /dev/sda: 80.5 GB, 80530636800 bytes 255 heads, 63 ...
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Centos disk space allocation

My internal server is running out of space. I want allocate some of the space from lv_home over to lv_root. I have checked the following link: Centos 6.3 disk space allocation. It has few commands ...
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112 views

Is there any downtime when expanding a volume on an iSCSI setup using Synology Hybrid RAID?

The subject sums up the scenario. I believe the answer is there is no downtime but the system might simply be slower during the rebuild. Which is fine. But if there is downtime, how long? A small blip ...
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32 views

lvm and hardware raid: hardware raid 5 and raid 1 in single volume group?

I have a system with pre configured hardware RAID. It has 2 disks in a RAID1 configuration. It has a further 6 disks in a RAID5 configuration. The 6 disk RAID5 is split (by the hardware) to look like ...
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32 views

LVM RAID10 “Won't be synchronised” - What does it mean?

I was creating an LVM RAID 10 across 4 physical volumes (each 3TB) when I got the following error message: WARNING: New raid10 won't be synchronised. Don't read what you didn't write! My googling ...
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22 views

fdisk with lvm: Why is first sector at 3072 instead of 2048?

Using ubuntu 12.04, i have a xen-server and several vms. Considering /dev/vm-disks/testes - an lvm volume partitioned during OS install /dev/vm-disks/testes-home - another lvm volume, unpartitioned ...
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Launch EC2 instance with Logical Root Volume

I need EC2 instance on Amazon Web Services with CentOS 6.5 where the root partition will be Logical Volume. Is there some specific AMI or some available option for choosing before launching the ...
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35 views

Extend root logical volume for VM with Oracle Linux of VMWare

Please make me sure did I wrong thing, or not. I'm resizing the root partition which is under the LVM. This server is a VMWare's virtual machine with Oracle Linux. I'm using this article: ...
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205 views

Xen lvm resize2fs: Bad magic number in super-block

First of all i have to say i've been looking through lots of posts very similar to what i have but none could solve my problem... In my xen server i use 5 lvm disks per virtual machine: /boot / ...
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33 views

Intelligent Volume Management [closed]

I'm looking for a software solution that could present a single disk volume to me that's backed by some sort of intelligent disk manager. In my ideal use case I'd be able to create the volume from ...
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66 views

LVM mirror attempt results in “Insufficient free space”

Attempting to add a disk to mirror an LVM volume on CentOS 7 always fails with "Insufficient free space: 1 extents needed, but only 0 available". Having searched for a solution, I have tried ...
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11 views

Debian Installer Partman and reserved blocks

I did this preseed configuration but I'm unable to remove the percentage of reserved blocks directly from the partman recipe. It seems that the option "partman-basicfilesystems/specify_reserved" is ...
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2answers
35 views

Mounting disk partition inside LVM

I have a logical volume what's used for a xen disk: Disk /dev/d0_vg/backup: 10.7 GB, 10737418240 bytes 1 heads, 1 sectors/track, 20971520 cylinders, total 20971520 sectors Units = cylinders of 1 * ...
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does the number of lvm logical volumes affect ssd performance

Please let me know what your thought are on this. I've installed Ubuntu multiple times on a msata ssd mS200S3 120GB. There is a noticeable decrease of read performance on the exact same hardware for ...
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64 views

How to automatically increase the partition size of multiple Ubuntu nodes in VMware vSphere?

We have dozens of Ubuntu nodes where I have to resize the hard disk drive to different sizes. Currently I’m doing all of the following steps manually: Increase the size of each node’s virtual hard ...
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149 views

Moving LVM volume group from one physical disk onto another

I'm an out-of-my-depth PHP developer who has to deal with the following sysadmin problem, pronto. We have an Ubuntu (Ubuntu 14.04.1 LTS) server run Xen (xen-hypervisor-4.4-amd64 4.4.0-0ubuntu5.1). ...
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Failed RAID 1 drive in a logical volume - lost cause?

I have a non-critical CentOS 6.5 server with a rather quirky disk setup: The main logical volume (mounted as /) comprises two RAID 1 disk pairs, so it's made up from md1 (2TB) and md2 (1.5TB). ...
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35 views

Multi-Volume data storage without striping

I have a network storage server running Debian, containing multiple hard drives. These drives are all mounted into subdirectories of a samba-shared folder. All members of the network have full read ...
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85 views

Restore from XenServer LVM ddrescue image

the disks in my xenserver are dying. I could rescue some of the lvm volumes with ddrescue. Now I setup a new xenserer and I wonder how to restore from the rescued images. Anyone has experience with ...
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69 views

How can I grow an ext4 filesystem inside a dm-crypt/LVM volume?

I have a disk with this format: sdc 8:32 0 1,8T 0 disk └─sdc1 8:33 0 1,8T 0 part ├─vg-lv1 (dm-0) 254:0 0 900G 0 lvm ...
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EC2 instance with partitions for /boot as ext4 and root / as lvm possible?

I've been playing about with this for a few days now. I haven't managed to find an example of someone running an EC2 instance with the root volume partitioned to have /boot on ext4 (or 3 or 2) and ...
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274 views

How do you repair a Ubuntu 14.04 RAID-LVM-DM-CRYPT-LUKS Physical to Virtual system that won't boot?

I can't get a Ubuntu 14.04 Virtual server to boot correctly. It's recently been cloned "dd if=/dev/sda of=vmimage" The Physical has a RAID1-LVM-DMCRYPT-LUKS configuration, The boot sequence aborts and ...
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573 views

sed fix for BusyBox - boot fail unable to mount LVM

BusyBox why u no vi?! Summary: Ubuntu 14.04 Server after upgrade first boot, only boots to BusyBox v1.21.1 initramfs with "gave up waiting for root device" due to missing /dev/mapper/xxx-root as ...
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Reassemble RAID 1 array from old system

I recently upgraded my OS from RHEL 5 to 6. To do so, I installed the new OS on new disks, and I want to mount the old disks. The old disks are listed as /dev/sdc and sdd in the new system, they were ...
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38 views

sar -b reports much too high statistics, are the I/O counted twice?

On a Linux server sar -b reports much too high read block statistics, sometimes 3.500.000 readb/s peak and around 2.500.000 readb/s sustain, which makes more that 1 gigabyte/s (according to the sar ...
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55 views

LVM - Moving data between Logical Volumes within the same Physical Volume

I will have two logical volumes that exist within one physical volume (RedHat Linux LVM). I will also be moving a lot of data between these LVs. My question is: Does the data get moved on the actual ...
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69 views

Error creating LVM snapshot: Module dm_snapshot not found

I've installed via apt-get lvm2: (precise)root@localhost:~# apt-get install lvm2 Reading package lists... Done Building dependency tree Reading state information... Done The following NEW ...
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15 views

lvm mirror doesn't resync the logical volulme

I trying to restore one lvm mirror using the old metadata, for restore the config i'm using the command vgcfgrestore -f redhat vgmirror but after the restore of the old metadata, the resync ...
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229 views

ZFS RAID0 pool without redundancy

I created a ZFS pool on Ubuntu 14.04 without specifiying RAID or redundancy options, wrote some data to it, rebooted the machine and the pool is no longer available (UNAVAIL). I don't have the exact ...
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114 views

Resize a logical volume of an LVM inside another LVM (Xen Dom0)

I have a Xen guest, which its main disk is on an LV (let's call it "domu-disk", VG name "xen"). It's on one single 1T drive at the moment. Inside that domu-disk, it was partitioned into one primary ...
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31 views

Logical volume attributes

I've used lxc-clone command to clone my lvm-based container (test_lvm was copied to create u33). Container works fine, but the output of sudo lvs confuses me: LV VG ...
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85 views

KVM : VMs need several restarts to boot (on 2 different hosts)

I'm using a KVM hypervisor on a Ubuntu Server 12.04 server. My virtual machine's virtual disks are LVM volumes, formatted as ext3. The guest OSes are all Ubuntu 12.04 and 14.04 server. Everything ...
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68 views

swapoff running forever on LVM volume

I'm currently trying to resize my swapspace on a Proxmox VE server with LVM volumes, as I'm running out of space for LVM snapshots and the swapspace is fairly oversized: root@rb-srv-gus:~# free -m ...
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50 views

Online resizing of kvm guest root filesystem?

I have a Linux guest that uses an LVM volume directly as root file system (that is, there is no partition table). libvirt config looks thus: <os> <type arch='x86_64' ...
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Impossible remove Logical Volumes or Volume Group LVM2 [closed]

After a disk crash part of a LVM group, I can't use LVM2 properly. If like delete a Logical Volume impossible (Error on SATA Volumen) lvscan Couldn't find device with uuid ...
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56 views

LXC setup with multiple LVM-backed disks

I'd like to set up an lxc container on an ubuntu host with multiple back-end disks. At least two: /boot / /opt, maybe Is there a way to, in one lxc-setup command, to accomplish this? Below is ...
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Recover lost volume group in hp ux 11 v2

The disk containing operating system (vg00) has failed. I tried to install the operating system on a new disk and I want to restore other volume group (vg01 and vg02) on two disks that contain data.
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74 views

Changing XenServer from LVM SR to EXT SR

I'm trying to setup openstack using this page: https://wiki.openstack.org/wiki/XenServer/PostInstall Unfortunately I think when I setup xenserver it setup the local SR as LVM (which the page above ...
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1answer
77 views

How do I replace the root filesystem (ext4) with a new one in LVM with one which has more inodes?

I have a few systems which have been running over a decade in a cluster on SLES 10 (now long past EOL). We're migrating to CentOS 6 64-bit. I got everything done but the final data syncs, and lo and ...
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82 views

Redundancy: LVM+mdadm or LVM internal RAID

The task is to create LVM storage for virtual machine images. So LVM will be used in any case. There are two ways LVM providing redundancy: block mirroring lvcreate -m 1 --mirrorlog mirrored -n ...
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LVM physical volume priority

Linux LVM can combine several physical volumes in one group and when spread space of this group among logical volumes. If some slow devices will be added to group it may slow down all logical ...
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177 views

How to increase KVM guest disk size using LVM VG as storage pool?

The KVM host server is running CentOS 6.5 and a LVM volume group "storage_pool" is used as the main storage pool for KVM. An Ubuntu guest is installed using an ext4 filesystem and mounts the whole ...
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Duplicate PV in VG listing

I have a server that's had a bit of trouble with it's disks (hdisk10/hdisk11/hdisk15 failed, hdisk7 failing) in the past little while but it's happy now. No data loss thankfully as the vanished/stale ...
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69 views

Which file system was I using?

This is an odd question of a somewhat forensic nature. I was running a server, which originally had openSuse 11.4 installed, and was upgraded twice (to v12.3 and v13.1). Recently, an update messed up ...
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LVM: Duplicate VG name VolGroup00

I'm on a server that shows a duplicate VG name. How can I rename one of these VolGroups to get rid of this conflict? [root@dev-server dev]# lvs WARNING: Duplicate VG name VolGroup00: ...
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39 views

Why the root partition is not reduced after attaching new partition to the /var directory?

This is my disk state before attaching new virtual disk: Filesystem Size Used Avail Use% Mounted on /dev/xvde1 4.9G 4.6G 1.3M 100% / tmpfs 828M 0 828M ...
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3answers
172 views

Repartitioning already mounted logical volumes

This is my current disk state on a physical CentOS machine: Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_ecomwise-lv_root 50G 47G 267M 100% / tmpfs ...
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2answers
68 views

LVM: How to re-use unwanted logical volume space on an existing volume

We have this old CentOS4 box and I am trying to increase the space. I want the full 8GB to show up in a "df -h" but it shows only the first Volume of ~4GB. How can I add the 2nd volume to the first? ...
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563 views

how to clone a VM on LVM to another in KVM?

On a Debian wheezy i installed KVM for virtualization and install some VMs on it. I use separate LVM disks because of its performance for my VMs disk. Now i need to clone one of them in new LVM disk. ...