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

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Temporary restore LVM snapshot of root

I have a snapshot of the root filesystem that I want to boot with - bring the machine into a state it was a few days ago, run some tests and then go back to where I am right now. I tried editing ...
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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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Why it is not recommended to put boot partition on lvm?

I read somewhere that it is not recommended to put boot partition on lvm based partition. But, I'm doing it anyway. Then the only problem I've faced on this is sometimes when I install a new Linux ...
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Can lvm2 volumes based on device names like sda, sdb etc be mounted if their names change?

Lets say I would like to make a large volume from external usb drives. I create the lvm volume on drives that have been given certain device names sdf sdg or whatever and at some point they are ...
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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 ...
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LVM Filesystem recovery

I was trying to resize my LUKS crypt following this https://wiki.archlinux.org/index.php/Resizing_LVM-on-LUKS and I got to the partition resize with parted and seriously screwed things up. I typed 870 ...
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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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Error “/run/lvm/lvmetad.socket: connect failed: No such file or directory” - but not Grub related

All LVM commands give me the error /run/lvm/lvmetad.socket: connect failed: No such file or directory. I Googled this error and found only postings related to Grub and Grub-install. wish to get rid ...
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How to stop caching a LVM partition?

I currently have LVM-cache set up on my Ubuntu install as described in https://rwmj.wordpress.com/2014/05/22/using-lvms-new-cache-feature/. (I did have to install some of the vivid/proposed packages ...
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Difference between fsfreeze and lvm snapshot

I heard recently about fsfreeze and I'm very interested in making snapshots of my VM with VMware and get a consistent state of disk using quiescence. All my file-systems are LVM volumes, and man ...
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970 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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lvm: what's the purpose of a Volume Group?

Each Volume Group can have many resizeable Logical Volumes. each of Logical Volume can have different filesystem, encryption options etc. that means having a single Volume Groups is enough. so why LVM ...
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What's the easiest way to decrypt a disk partition?

I made a mistake of encrypting the entire LVM physical volume (contains both home, root, and swap) when installing a CentOS 6.4 (2.6.32-358.6.1.el6.x86_64) box. I soon came to realize that moving ...
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2k 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. How can ...
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dual booting centos5.5 and fedora

I already have CentOS 5.5 on my system whose hard disk is ~500GB. I have tried to dual boot with Fedora 16. while installing fedora 16 I have created a ~250GB and ~4GB partitions for "/" and swap. The ...
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gparted live CD can't resize a partition?

I recently ran out of space on a VirtualBox VM (CentOS guest) managed by Vagrant. It was using a .vmdk image, so I couldn't dynamically resize it. Following these instructions, I cloned the old image ...
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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 ...
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create raid1 from existing lvm local volume

I have an existing LVM, with one physical drive (say /dev/sdb), and one volume group (say volgrp1), here I have three logical volumes (say lvSys, lvHome, lvSwap). Now I worry about my data and by a ...
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100 views

Recover LVM (on RAID1): No volume groups found. Partition table erased?

I'm trying to recover a LVM (no encryption) on a RAID1 using Debian Live. Apparently, the RAID1 can be assembled without issue, but the LVM is broken. You may skip to LVM section. The RAID part is ...
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173 views

Can thin LVs be moved to a different LVM pool?

If I have (2) thin pools (vg/pool1) and (vg/pool2) inside the same volume group, with an LV inside the first pool, is there a LVM command to move that LV to the second pool? Would pvmove do that? ...
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205 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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417 views

Removal of HDD causes kernel panic

I recently added a 2nd HDD to a system and then proceeded to do a clean install on to this 2nd HDD of CentOS 6.5. The original system was CentOS 5.9. My plan was to leave the original HDD in place so ...
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662 views

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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431 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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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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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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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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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 ...
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697 views

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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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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Extending/resizing Fedora Guest-OS root-drive in VirtualBox

I hope you can help me with that: My VirtualBox Guest-OS (Fedora 19) told me, that there is not enough free disk-space availabe, so I first increased the .vdi-file by using the Windows-Commandline: ...
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LVM cache and TRIM

I have set up LVM to cache a logical volume (located on an HDD) on a partition of an SSD (in writeback mode if this matters). As far as I can tell, this works correctly and the cache uses all ...
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A stop job is running for LVM

I use full disk encryption which uses an LVM. It uses like this in lsblk: NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda ...
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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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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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179 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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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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How to recover a physical volume in LVM that shows as an unknown device?

I've been wanting to learn more about LVM, so I finally have taken the time to dive into it. Being the very smart computer guy that I am, I had the great wisdom to experiment with LVM on one of my ...
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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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722 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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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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202 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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299 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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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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328 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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804 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 ...