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

learn more… | top users | synonyms

0
votes
1answer
23 views

Extended logical volume in LVM still shows old size

I have setup a server with LVM, and at first I juset created a small logical volume named 'root' of about 10GB, but later changed my mind. I extended it to 1TiB, but my server still is in two minds of ...
0
votes
1answer
64 views

How to allocate available HDD from /home to /root [duplicate]

I have a 500GB HDD for CentOS 6.7 . But when I created a partition, I just have created a small storage size for root, but /home folder had lots of capacity. Could I move available capacity from /home ...
1
vote
1answer
56 views

How to reduce root Volume Group size in LVM?

I found a similar question here, but there's one different point on my server: --- Volume group --- VG Name vg System ID Format lvm2 Metadata Areas 1 ...
1
vote
1answer
26 views

LVM snapshot - performance for write-only data

I have a client that is archiving write-only , time-series data in a database (ie. data is rarely modified after it is written, and it is rarely read as it is on a secondary/backup/failover node). I ...
0
votes
1answer
21 views

LVM Snapshot - Copy on write - does it apply to new data?

I have been reading about LVM Snapshots, and I have a general understanding of how it works. If a snapshot is made of source data, I understand that the copy-on-write (COW) means that if a ...
1
vote
1answer
46 views

Split home partition into 2 (xfs on LVM)

I am using centos 7 and I have a /home mounted on an xfs filesystem on a dedicated LVM partition. /dev/mapper/centos-home 782G 34M 782G 1% /home I want to split this partition to 2 ...
0
votes
0answers
75 views

linux + resize2fs with Operation not permitted error

I am trying to increase the /opt to 65g but I get the following message Operation not permitted While trying to add group #8256 what is the resolution for that? root@linux:/opt # lvresize -L 65g /...
1
vote
1answer
45 views

Swap /dev/mapper/* devices

I have been given a box that has /dev/mapper/root mounted as / and mapped to /dev/dm-0. It has /dev/mapper/home mounted as /home and mapped to /dev/dm-2. The dm-0 device is 5G and the dm-2 device is ...
1
vote
0answers
41 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 ...
0
votes
2answers
102 views

command to list logical volume I/O statistics on AIX

I am looking for a command which displays the I/O statistics of logical volumes (like reads/sec , writes/sec, io utilization %, read kb per second, written kb per second) . I tried iostat, but its ...
2
votes
1answer
292 views

How do I configure grub to boot another linux distribution off an lvm partition?

(I no longer have this setup so I cannot test new answers, sorry. I had to switch computers and am now only using arch; I am leaving the question as it is though since I'd love to know a solution if ...
1
vote
2answers
51 views

RHEL: FDE w/o password - boot from key on partition

I'm trying to accomplish encrypting my OS w/ LVM on RHEL 7.2 and have it boot without entering a password by using a key on an unencrypted partition. LV VG Attr LSize Pool Origin Data% ...
0
votes
1answer
103 views

How to create a volume group that is larger than 2 TB on a non-GPT system?

I've recently setup a CentOS 6 x64 server with 4x 3TB drives, running on top of a RAID-10 array. Current partition schema is as below; /boot 500M (Standard ext4) vg_root 10G (LVM) swap 12G (...
1
vote
0answers
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 ...
0
votes
1answer
301 views

Can't initialize physical volume of volume group without -ff

Can't initialize physical volume "/dev/sda3" of volume group "stark" without -ff I created physical volume with pvcreate followed by vgcreate and lvcreate successfully. Later on, I deleted in ...
0
votes
0answers
39 views

LVM and specify the disk for mirrorlog

When converting a LVM from linear to mirror lvconvert --mirrorlog disk vgdata1/data1 -m1 /dev/vd[de] we want to specify that the mirrorlog should be on a separate disk, such as /dev/vdf Is it ...
0
votes
0answers
11 views

Can I reinstall Linux and keep LVM data on another drive? [duplicate]

I have an SSD with CentOS installed I also have 2 HDD's with several LVM partitions configured for data. Can I completely reinstall Linux and mount the HDDs without losing data? I wasn't sure where ...
1
vote
1answer
199 views

md raid not mounted by dracut

Background I'm running Centos 7. Originally, it was running on a single disk that looked something like this: 1 200M EFI System (/boot/efi) 2 500M Microsoft basic (/boot) 3 465.1G ...
-1
votes
1answer
64 views

After running “mkinitcpio -p linux” i got “Hook 'lvm' cannot be found”

Trying to install Arch with LVM basing on this guide: http://sharpeend.impcode.com/2014/04/installing-arch-linux-with-lvm.html Partitions: sda -system-boot -systrm-root -system-home
1
vote
1answer
47 views

One LVM volume across multiple mdadm arrays

I'm about to set up a new nas and basically want to know if it's a bad or a good idea to have one lvm volume on multiple mirrored mdadm arrays, kind of like raid 10. I thought this would make it ...
0
votes
1answer
122 views

Will LVM partitioning affect my SSD life or performance?

I've installed new system (Linux Mint 17.3, laptop) using LVM partitioning because I currently don't need a swap (there is enough RAM - 12GB) and I want to use my SSD (Samsung 850 evo 250GB) more ...
0
votes
1answer
61 views

Will vgremove(inturn removed lvm's) wipeout data stored in raw lvm partition

We created 6 logical volumes in a volume group. Configuration looks like: two disk each 250g 1st disk we use 21gb for other.(Not lvm partitioned) Remaining 229g in 1st disk and 250g in 2nd disk will ...
1
vote
0answers
75 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 ...
1
vote
1answer
52 views

LVM devices not showing in initrd but working on boot [duplicate]

I am currently working on a custom initrd based on the CentOS 6.7 (2.6) kernel with the following modules loaded. The initrd is designed to backup files off a old RHEL system into memory, unmount the ...
0
votes
1answer
251 views

Ubuntu 14.04 software RAID with LVM install won't boot on bare metal

If I setup a VirtualBox guest with two 30 GB virtual hard disks and follow the following steps, the result will be a fully functional, booting operating system: Boot Ubuntu 14.04 Server install CD ...
2
votes
1answer
459 views

Guide for Gentoo setup with full disk encryption using LUKS+LVM

I'm looking for a way to make the following setup happen in Gentoo: /dev/sda1 -> /boot (ext2) /dev/sda2 -> Luks encrypted | +-lvm-vg1 | +- /dev/mapper/root-fs -> / (ext4) +- /dev/...
1
vote
1answer
171 views

how to create another physical volume/partition with existing unused lvm space without data loss?

I have a 1T USB disk with Fedora 20 installed. It shows as sdd in the first image below. I only used about 50GB. There are 3 logic volumes under the sdd2 and also there are about 620GB of free space ...
2
votes
1answer
92 views

grub can't find CentOS 7

My desktop was tri-booting between Ubuntu 2.04, CentOS 6, and Windows. I installed CentOS 7 in the space that CentOS 6 used, but update-grub doesn't result in the new CentOS showing up. I can only ...
0
votes
2answers
33 views

Extends partition using another disk [closed]

I have A 100GB SSD that I use for root partitions. I have 1TB disk. I'm running out of space on the SSD partition. Can I extends its size using the other disk. I know I can move the /home partition ...
2
votes
1answer
218 views

Found Duplicate PV in LVM disk scan

I have a VPS, and I attached another hard disk to it. It contains the same partitions I have on my current disk; it has / and /boot and swap. I need all data on the / partition. Here is the output of ...
0
votes
1answer
21 views

Why hasn't my CentOS partition resized?

I am running CentOS 6.5 in Hyper-V. It originally started off with a 5GB virtaul hard disk (VHDX) but I later decided I wanted to increase the size. I changed it in Hyper-V settings to 20GB, then ...
2
votes
1answer
42 views

Why the ext4 filesystem can be shrunk only when not mounted?

I'm playing a little bit with LVM. I've noticed that I can add a new HDD, include it in the volume group, and add some space to all of the existing volumes without unmounting theirs filesystem or ...
3
votes
2answers
76 views

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 ...
1
vote
1answer
284 views

Dependency failed for mount after dist-upgrade

Last weekend, I ran an apt-get dist-upgrade on a home Debian 8.3 system, and was surprised to see that it entered emergency mode on the next boot. The server in question runs LVM on top of a mdadm ...
1
vote
1answer
106 views

Automatic unlock LVM partitions with a Key LUKS dm-crypt

I'm trying to make an automatic unlock of other partitions, I have 9 Logical volumes including root, and I know root LVM will unlock manually true password to have a key decrypted. My goal is unlock ...
0
votes
1answer
38 views

Where is the space from LVM partitions?

Additionally, output from my df -h command and fdisk -l command. Where and how could I utilize space from my /dev/sda4 and /dev/sda5 partitions? I suspect /dev/mapper/fedora-root to be my LVM ...
-3
votes
1answer
89 views

How can I create an LVM volume group spanning 2 hard drives? [closed]

I have rented a dedicated server with two 500gb hardisks running Centos 6. On this server there are 4 partitions: 1.boot 2.root 50gb 3.swap 50gb4. 4.empty 400gb Now I want to create a logical ...
0
votes
0answers
143 views

Arch install grub cfg file LVM errors

i have been doing an arch installation on top of windows 8 using USB live iso. I partitioned my HDD as follows: SDA1->350mb(windows related) SDA2->781gb(windows related) SDA3--extended SDA5-&...
1
vote
0answers
115 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-...
3
votes
1answer
349 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 ...
0
votes
0answers
152 views

grub2-install can't find lvm device

I am in the process of moving from Arch to Fedora and simplifying my partitioning scheme in the process (by using LVMs raid options instead of layering it on an mdadm array). I have this LVM scheme: $...
1
vote
1answer
69 views

LVM: How to clone thin-volume

I'd like to know how it's possible using the lvm cli tool to clone an existing lvm thin volume, creating another thin-volume with the same contents (but possibly a larger size) as the original one. ...
0
votes
0answers
73 views

Combine grub2 + GPT partition + LUKS + LVM (grub overwrites LUKS header)

I'm trying to configure system to boot from one GPT encrypted LVM partition. But when I set partition type to 8300 grub-install complains on warning : this GPT partition label contains no BIOS boot ...
0
votes
1answer
650 views

Does it make sense to put btrfs on lvm?

This is OpenSUSE Leap 42. I have a computer with 2x 500 GB SATA HDD drives and to speed it up I put in a small 30GB SSD drive for the system. During installation HDDs were disconnected as they ...
1
vote
2answers
53 views

Renumber encrypted partition - sda3 to sda5

I have an encrypted crypt-luks partition that is currently named sda3, and is the last partition on the disk, that is, there are no sda4 or sda5. The encrypted partition contains three logical volumes ...
0
votes
2answers
46 views

In Linux what setup would allow striping data across multiple drives?

How would a system be set up to stripe data like raid does, preferably with out using raid. Could lvm be used for this?
2
votes
0answers
29 views

Safest way to add/extend partition on linux [closed]

I have a linux server that is running out of space. There are already 4 primary partitions, which I believe is the max number of partitions. So I am unable to create a new parition as per this article:...
0
votes
0answers
41 views

vSphere Client 6.0.0 fails to add a disk drive greater than 4TB to VM

Any help would be appreciated: GOAL: Get Linux Mint 17.3 VM to see each of my 6TB (5.46TB) physical drives so I can then raid6, LVM and mount. They have already been successfully added as ...
1
vote
1answer
116 views

Unable to remove stale volume

I have an external hard drive connected to my Ubuntu laptop via USB. The whole hard drive is LUKS encrypted. Next to the encryption layer sits an LVM volume which I mount to /mnt/es. Once opened, ...
2
votes
1answer
72 views

Transfer content of LVM block device ensuring consistency - LVM snapshot?

I need to create off-site full backups of an LVM block device. Thinking the old dd over SSH method. To ensure I have a consistent backup, should I create an LVM snapshot first? So new changed blocks ...