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

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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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372 views

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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150 views

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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771 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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815 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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937 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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118 views

Boot GRUB2 with Degraded RAID5

I am building a custom NAS with Debian Jessie. Has three 4TB hard drives in a software RAID5 configuration. Works perfectly when all three drives are present. I am trying to test what happens when if ...
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223 views

Mount LVM volume as external usb drive? CentOS 6

I'm trying to mount my old 2x500GB drives to the new server which has the same drive volume. Both have LVM structure but it's not working. root@server [/mnt/usb]# ls /dev/sd* /dev/sda /dev/sda2 /...
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147 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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639 views

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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304 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 ...
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10k 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 ...
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35 views

How to shrink sda disk with XFS filesystem

We have a RHEL 7 server with 2 disks (sda and sdb). Our /, /var/log and swap are on sda, /var is on sdb. We use LVM and XFS. sda is too big (160 GB) and we would like to shrink it to 40 GB. We can ...
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44 views

How to wait for detected LVM volumes?

I have the following problem: I have a machine running arch and which contains a encrypted LV in a LVM. Inside the (encrypted) LV is another PV located. So I have in fact two VGs: One which contains ...
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127 views

Lost space in LVM

LVM Hey. First of all I want to say excuse me for my bad English. I a problem after installing CentOS 7 with LVM. Some space lost after problem with LVM configuration. I tried to add some logical ...
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121 views

LVM partition not mounting

There was a drive failure on a disk in a RAID1 configuration. I removed the bad disk and reconfigured the RAID1 to only use the good disk. When I reboot the machine there are missing LVM partitions. ...
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73 views

recover lvm formatted partition

I had 2 old drives having LVM installed showing as 1 drive. They were attached by the datacenter to the new server to migrate data but they weren't able to be mounted I tried everything possible until ...
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79 views

Recoving LVM logical volumes after having to recreate the physical volumes

After reinstalling my system to a new SSD, my existing LVM was toast, it couldn’t find any physical volumes or volume groups. I also don’t have backups of my LVM configuration. Also to further ...
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3k views

Jessie: can't boot the kernel 3.16.0-4-amd64

I have been using Jessie for a few months now, and I had a problem booting my computer a few weeks ago. I had this error on boot: early console in decompress_kernel Decompressing Linux... Parsing ...
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374 views

Dual Boot Debian on Raid 0 in UEFI mode

My new notebook came from the factory with Windows 8 on two 128GB SSDs in RAID 0 mode. I wanted to dual boot it with a Linux distro, I settled on Debian, so I resized my C: drive as one normally would ...
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408 views

Unable to boot with dracut and luks: '/dev/resume' : file exists

I am installing gentoo and have performed my first reboot after configuration and installation within my chroot environment. I am using LUKS and LVM to manage encryption of my drives. I am encrypting ...
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276 views

USB ethernet device not working in VM

I'm having trouble getting a USB ethernet device working in a qemu-kvm/libvirt VM. The problem is that even though the guest OS sees the USB device just fine it can't mount it. lsusb on the guest ...
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67 views

recover lvm after loosing partition table

On one of my hard drives had a few physical volumes/partitions and lvm on them. And then I lost partition table. I still have files from /etc/lvm/* how can I recover my data?
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3k views

How to restore /sysroot on Fedora 20

I can't boot my Fedora 20 system as usual. Upon boot I get the message Entering emergency mode. Exit the shell to continue. journalctl reveals the following: systemd[1]: Starting Switch Root... ...
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16 views

How to increase an FS using a LiveCD - that has SW RAID+LVM

If we have an older OS and can only increase the FS if we umount the FS because it is the ex.: /usr - then we have to use a LiveCD. The /usr is in the rootvg (LVM) that is on a SW raid Q: What are ...
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350 views

Unmount external drive with LVM2 Physical Volume on it

I've got my Ubuntu 13.04 install backed up to my external hard drive using deja-dup. I formatted the drive with lvm so I could use the rest of the drive for external storage while having the resize ...
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2k views

What steps can I use to recover a RAID 1 array with LVM and EXT3 on it?

Someone handed me a drive that used to be part of a RAID 1 (mirror) array. The drive apparently has LVM (1?) on it and EXT3 (I believe). What steps can I take to regain access to this drive? ...
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32 views

LVM mounts deadlocking the kernel

I am running a Linux system that mounts a lot of LVM disk images, and indexes the contents of the filesystem. Frequently (about once a day), the whole system deadlocks as it tries to mount an LVM ...
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15 views

Encrypt partition and LV afterwards

What I want to do I am using Kubuntu 14.4 and like to use kvpm for my LVM-needs. I have a partition and a Logical Volume. On both is data. I would like to encrypt each of those. https://wiki....
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80 views

How to solve File-based locking initialisation failed.

Am on a CentOS-Minimal Virtual Machine, i had accidentally deleted a hard disk that contained a Volume Group (LVM). After rebooting i got an error saying " File-based locking initialisation failed". ...
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18 views

Boot Entry for Loading Encrypted LVM

So, I recently installed Arch Linux (EFI) with the root folder in an encrypted LVM. I am loading the correct modules and hooks on startup, but it's telling me it can not load the encrypted space after ...
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76 views

bcache not working as expected with ramdisk as cache device

I was trying out bcache but i don't have an SSD so wanted to use free memory as a substitute. As ramdisk is listed in /proc/devices as block device i assumed this would work OK but with below simple ...
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116 views

ArchLinux: Error installing grub on encrypted lvm partition(lvm on luks)

I am trying to install Arch Linux on an encrypted partition (LVM on LUKS). I followed the relevant Arch Wiki guide, but when I do: grub-install --recheck /dev/sda it gives me this output: grub-...
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46 views

One SSD cache for two partitions on two separate disks?

I have two hard drives: one for my operating system and the other for other data. I recently bought an SSD drive that I would like to use an LVM cache for those two devices. The problem is that I ...
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19 views

Backup location in LVM

By default, the metadata backup is stored in the /etc/lvm/backup file and the metadata archives are stored in the /etc/lvm/archives file. What should I do If I want to change directory for backup? For ...
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533 views

Backup partition in LVM using Clonezilla

I installed a Debian Jessie machine on a 1.4TB disk (technically a hardware RAID but this shouldn't matter). At installation, I created an unencrypted LVM with 3 volumes, including a 30 GB volume I ...
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38 views

Moved /var/log to a new logical volume now data is missing

I have a RHEL server that has /var mounted inside an LVG on its on dedicated LV. Per RH Security Advisory CCE-26215-4 I needed to migrate /var/log to its own dedicated partition. So I shrunk /opt to ...
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26 views

Restoring VG configuration from recovered drive

Had to reinstall CentOS on a server with three RAID 1 arrays. I installed the OS on sda (300g), and left sdb and sdc alone (they were not formatted or otherwise fiddled with). The OS is up but I'...
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94 views

Encrypted boot drops to shell, how to set LVM crypttab consistently? 'ALERT! {logical volume path} does not exist'

I used Luks to encrypt my whole hard drive, and created that sda drive as a physical volume. Under that volume, I create a volume group vg00 with my 3 logical volumes lv00_root, lv01_home, and ...
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78 views

mount LVM RAID 5 with missing disk

I have a software RAID 5 (LVM, XFS) with three 2 TB drives. Is it possible to mount the RAID with one missing drive (instead of having to rebuild it)? How would this be done? [Edit] My /etc/fstab ...
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108 views

Recover VG after Adding Disks and Rebooting

I had an old 1.5 TB NTFS formatted disk I wanted to use in by RHEL 7 box, so I put it in my desktop booted, and proceed to delete the partition table using fdisk. I created a physical volume on it ...
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49 views

change device names in LVM

We have a server crash situation for our Oracle Database Server. The operating system was SLES 10 SP2 and Oracle Release 11.1.0.6.0. Now the system had this setup before crash. 1 boot disk --- ...
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174 views

How to create separate usr partition during arch install?

How do I modify and add the hooks needed in mkinitcpio to have a separate usr partition? Also, am I mounting the other partitions correctly? http://imgur.com/Rxt6o1g Basically I'm using UEFI with GPT,...
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60 views

Change Partion Drive Space

Okay I am having some trouble here - pretty new to the Linux environment and need some help. I have a 2.7 TB RAID array, and someone configured a partition at around 200 GB but it really needs to be ...
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697 views

clvm (cman) has problems with dlm

I am trying to create a volume group which is accessible on two servers with clvm. I read about it and it looks like it is most easily to do this with cman. But after hours of testing I cannot achieve ...
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231 views

fsck single disk from Raid 0 lvm

My NAS (Seagate Blackarmor) is refusing to connect to the network after a fsck. I assume the root filesystem (stored on flash) might have been corrupted somehow after running fsck. The setup was a ...
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348 views

How to mount sdb directly or using LVM partitions on sda?

I am new to LVM and VM yet, and I need to be able to access sdb like /mybackup/ 1 - should I have sdb1 created then mount? 2 - should I mount sdb as whole disk without LVM? 3 - create lvm and than ...
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223 views

e2fsck block bitmaps

What exactly are block bitmaps? Why would I get the following error: The filesystem size (according to the superblock) is 1219824640 blocks The physical size of the device is 731447296 blocks Either ...
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429 views

LVM issues and questions

I've got a NAS configured with LVM where one of the volumes is giving errors like this: vgscan reading all physical volumes. This may take a while... /dev/ElkhornC7VG1/idisk5: read failed ...
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495 views

Arch Linux boot failure: Fsck check on LVM /var mount fails

I recently installed Arch Linux on an older laptop that I am using as a personal workstation and machine to better learn how to administer Linux. I have a persistent boot failure that has started ...