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

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Optimization for an SSD?

I am running Fedora 20 on a Laptop ( Lenovo Ideapad Yoga 2 Pro ) with an SSD. My filesystem is LVM with ext4 as the format option. I am now running Fedora as the only OS on the system with Legacy BIOS ...
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111 views

Resize Disk on Linux

df Filesystem 1K-blocks Used Available Use% Mounted on /dev/mapper/vg_cloud-lv_root 51606140 9985252 38999448 21% / tmpfs 515252 0 ...
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245 views

dm snapshot - how does it work?

Fedora uses dm-snapshot for making the root filesystem read-write. At least for me, when running a livecd (even without touching it), it will become unusable relatively quickly meaning it has ...
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136 views

benchmarking ftp in 3 methods of virtualization

My Bachelor Final Project is about benchmarking visualization methods with ftp, web and mysql services: installing Debian on xen (para-visualization) kvm and lxc with equal resources config (equal ...
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272 views

Can't see my ssd drive when booting using grub on a usb pen

I installed debian on my laptop and everything was fine (I may need to mention that I'm using LVM) until I reached the grub point. Since I have a GPT partition he refuses to install properly. I ...
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37 views

Reasons for choosing primary over logical partitions [duplicate]

I guess anyone knows the benefits of logical volumes. But are there any reasons why I should choose primary partitions if I can?
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758 views

Resize LV's in a LUKS encrypted VG - Ubuntu 11.04

I wanted to resize the FS on a machine but i ran into problems: Purpose: the LV of /home is too big, the LV of / is too small (they're on 1 VG.) - I need to put 10 GByte from /home to /!! Problem: ...
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444 views

What's the difference between Linux and Linux LVM?

If I want to install new hard drive should I make the file system Linux or Linux LVM? Also after that I've got to format again with mkfs.ext4. Actually what are we doing? The first one is formatting ...
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3k views

list the devices associated with logical volumes without using lvm2 package commands

I want to list all the physical volume associated with logical volume. I know lvdisplay, pvscan, pvdisplay -m could do the job. but I don't want to use these commands. Is there any other way to do it ...
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7k views

How to change the Name of Logical volume in Volume group

I created an LVM and inside that i created Volume Group and within it created Logical Volume and given the mount point /u001/app/pracle I named it wrong instead of ORACLE i it should have been typed ...
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539 views

“No volume groups found” after running vgdisplay

I am trying to expand my primary partition to use the extra disk space I have added in my VMWare virtual machine. I have been able to add the disk space, partition the extra space into an LVM ...
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636 views

Is it useful to setup RAID0 on laptop? [closed]

I have a Dell laptop, which I am going to replace the CD-ROM hub with a HDD. I am thinking if I setup a RAID0 on my original HDD and the new HDD, would I have some I/O performance improvement? ...
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215 views

LVM Snapshot without copy-on-write

I've been experimenting with LVM and how I can use it for managing data on my NFS server. With everything that I've read about snapshots, I am still unsure about how they perform in real life. Why ...
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534 views

No Space left on device - Debian

when Im new to linux and try to run this below code apt-get -f install getting below error: Checking the available space df Tho output How to increase the available space in /usr path?
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431 views

Have to run partprobe at every boot

I created an LVM logical volume. I partitioned it manually. I ran partprobe. I found the new device in /dev/mapper, then I mounted it where I needed it. Everything works. ...except on reboot, ...
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37 views

How do backups that use LVM work?

Some LVM tutorials seem to claim that one take a snapshot of a logical volume (LV), then backup the snapshot using another tool, then remove the snapshot. When the unspeakable happens, the user can ...
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107 views

Hot swapping a mirrored disk on a HP UX

I'm trying to do a hot swap on a mirrored lvm. $ vgdisplay -v /dev/vg00 --- Physical volumes --- PV Name /dev/dsk/c2t0d0s2 PV Status unavailable Total PE ...
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415 views

'No such file or directory' when I am trying to format Logical Volume

I am trying to create Logical Volume on CentOS 7 on EC2 instance. After attaching the volume I am creating partition using fdisk, then I am starting the Logical Volume creation: pvcreate /dev/xvda1 ...
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531 views

/sbin/cryptsetup not found on boot

I've created an encrypted root partition using LUKS which contains a few LVM partitions. I can't boot and get the following output on startup: Begin mounting root file system ... Begin: Running ...
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2k views

mount: warning: /etc/mtab is not writable (e.g. read-only filesystem)

Working on my system I noted that the root filesystem is mounted read-only. My system worked for months, today I get this error: mount: warning: /etc/mtab is not writable (e.g. read-only filesystem). ...
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32 views

Can LVM split files between volumes?

Let's say I have 2 volumes 2 GB each (kept as single group). And I would copy there 3GB file. Will it be split? I just hope the answer is "no", and the files are atomic. The reason is -- with ...
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1k views

Resize root LVM and FS in Debian 7

I have a Debian server and I would like to increase the "root" partition from 5GB to 17GB and to diminish the "home" partition from 14GB to 2GB. I am a newbie in linux sysadmin, so a really need your ...
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208 views

rsnapshot LVM without root

I'd like to cron a local backup to a locally mounted USB drive. I'm using rsnapshot and want it to back up an LVM snapshot onto the USB drive. But, unless I run the cron as root it complains that I ...
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286 views

How to correct fs size for logical volume

I decreased logical volume lv_postgres size for a 5G. then redistributed free space to other lv lv_home, but didn't do resize2fs for the decreased volume lv_postgres'. At the next boot i fall into ...
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5k views

Create swap partition after install

I already have parititon contain data under lvm enviroment with centos 5.8 output of fdisk -l root@server [~]# fdisk -l Disk /dev/sda: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, ...
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76 views

Arch linux root device problem in '/dev/mapper/MyStorage-rootvol'

I installed Arch x86_64, these are the commands I used during the installation: # parted /dev/sda (parted) mklabel msdos (parted) mkpart primary ext2 2MiB 2GiB (parted) mkpart primary ext4 2GiB 100% ...
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60 views

Unable to mount Volume Group [closed]

2 drives connected externally to a new server both are merged using LVM as one drive. vgscan Reading all physical volumes. This may take a while... Found volume group "vol_grp1" using metadata type ...
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447 views

Mount encrypted volume in Debian

I was given a HDD that was encrypted using dm-crypt and I'd like to mount it as /disk2 preferably having the decryption password stored in a file, so I won't have to enter the passphrase when booting, ...
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134 views

Mounting a Partition & recovery

To keep the story short, i am taking the easy way out and now trying to mount a partition to recover a few text documents. I tried to 'sudo mount -t ext4 /dev/sda4 /mnt' but received this error sudo ...
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35 views

Panic fault when mounting LVM2 volume

I have a CentOS 7 system that I can boot using a live cd. The system HDD's have an lvm2 partition with 2 volumes /root and /home. I can mount /root volume without any problems in the live ...
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800 views

LVM volume corrupted, can't be mounted after reboot

I created a LVM volume using this guide I have 2x2TB HDDs for a total of 4TB (or 3.64TB usable). I created the volume and rebooted. Everything was working fine. Then I copied 1.6TB of data on the ...
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102 views

Grub and Logical Volume Management

I've not been able to find any relevant information in the Arch Wiki about using LVM with Grub as the bootloader (BIOS). Let's say I've created the volume group 'volgroup00' using partitions spanning ...
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61 views

LVM move logical volumes across physical volumes without data loss

I wonder how can I move my logical volumes from current physical volume to another without data loss. I have read mans but I haven't found this information there. I would be grateful for any help. ...
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74 views

Creating a specific sized LVM logical volume at the end of a physical volume

I have a physical volume that is 49.8GB and I want to have a 2GB logical volume which is at the end of the physical volume and the rest of the physical volume being another logical volume. I read ...
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50 views

Whose responsibility is to divide data into PEs or chunks?

When we create LVMs or the RAID partitions, the data we save in the parition is divided into PEs or the chunks respectively instead of the conventional blocks of ext3 or ext4. My doubt is whose ...
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526 views

can you recover lvm metadata without access to /etc/lvm/?

I just installed Manjaro on to a externalized usb hard drive. After I was done, I tried to boot from my previously working Mint distro (no full-disk luks) on my internal hard drive. The lvm volume ...
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813 views

How can I merge root and home in Fedora?

I've installed fedora with default configuration few months back and now I want to arrange the mount points. /etc/fstab look like that: /dev/mapper/fedora_dhcppc4-root / ext4 ...
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57 views

Taking a sparse snapshot

I would like to take a dm snapshot of a drive. I do not want to take the snapshot of the unused and deallocated blocks. Is there any way of determining the used blocks and sectors of a hard drive ...
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417 views

Fedora 17-15 old lvm partition reporting incorrect size

After years i decided to upgrade from Fedora 15 to 18, but as per the guidelines only 2 versions can be jumped, so i decided to settle with Fedora 17 and ran preupgrade , all was going fine, till ...
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copy logical volume from one volume group to another

I want to copy a logical volume from one volume group to another on AIX. How can I do this? Is copyvg the right command?
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575 views

How to change or create Lvm partition in Centos after install OS in shell

How to change or create Lvm partition in Centos dedicate server after install OS in shell?
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33 views

DRBD device names and numbers

I am trying to deploy a DRBD setup. I am using two virtual machines running CentOS 6.6. It is quite unclear to me how should the drbd configuration file should look like. I am using the following ...
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Centos Redhat Cluster LICI RUCCI

I have 3 systems [Normal Desktops College LAB] with 2 Network Interfaces each node1.test.com : Public IP : 10.10.10.2 Cluster Hearbeat: 192.168.1.2 node2.test.com : Public IP : 10.10.10.3 Cluster ...
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88 views

boot on a LVM mirrored filesystem

My personal server (odroid-c1 tiny ARM computer) is running Archlinux on an LVM filesystem over USB disks. Logical volumes containing data (backups, etc) are mirrored and everything works fine. Now, ...
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15 views

Partitions going offline and coming back online

We have Linux server that has 5 LVM partitions. In that two partitions are going offline and coming back online again and again. It is a critical server. Please help, how to resolve the issue.
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152 views

Mounting failed - invalid argument

I've setup a Kali Linux installation on an SD card and created an encrypted LUKS partition with a LVM logical volume inside of it, then created a BTRFS filesystem inside. Almost everything works, but ...
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21 views

one nautilus device went missing, why? and how to fix?

nautilus devices are provided by /usr/lib/gvfs/gvfs-udisks2-volume-monitor, I've already restarted it but one device is still missing. I also tried strace on it, but it only outputs info about mounted ...
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130 views

Lvreduce online on RHEL 6 or centos 6 with ext4 file systems

Is it possible to reduce a mounting lv safely at RHEL6/CentOS6 with ext4 file system? If it is, how can I do that?
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266 views

Logical Volumes fails to mount with dmsetup and no table present

I am stuck with all the volumes on a volume group unable to mount, after a yum update on a CentOS 5.11. device-mapper upgraded from 1.02.24-1 to 1.02.67-2 The machine boots correctly from ...
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36 views

Centos missing ext3.ko

Earlier I encountered this error. lv_root: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY Which may be caused by the constant power failure here in our office. I fixed it by inserting a centos 6.4 disc ...