Questions tagged [lvm]
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.
1,533
questions
0
votes
1
answer
603
views
How do I resolve this LVM issue in Ubuntu on a USB External Drive?
I'll try to be brief and succinct.
I recently wiped my Ubuntu server and re-installed 20.04 on an older Proliant DL360. This system had two seagate external USB drives attached to it which store a ...
- 53
1
vote
0
answers
28
views
LVM: how to strip Logical volume without impacting existing data?
I have an LV lv1 backed up by a VG vg1 using 2 PV pv1 and pv2.
From lvs I understand that the layout of the LV is linear:
# lvs -o+lv_layout,stripes
LV VG Attr LSize Pool ...
- 111
1
vote
0
answers
1k
views
From mdadm raid to LVM (raid or mirror) decisions and how to monitor
We are migrating some server from linux raids (0 and 1) to LVM with stripe or mirrors.
At the moment our systems are mainly configured something like
| /tmp - /home - /others
|------------------------...
- 282
0
votes
1
answer
1k
views
parted + usage help not described the resizepart
we need to use parted command as example on rhel server 7.2 version
parted -s /dev/sda resizepart 2
but from parted help we not find the option resizepart
example:
parted -s /dev/sda resizepart 2
...
- 49
1
vote
1
answer
1k
views
How I can create LVM VDO volume on top of LVM RAID?
Im using LVM to setup my lower level storage with raid5 via lvcreate --type raid5 --size 2T -I 256K -i 3 -n my_lv my_vg
Now I want to setup VDO on the top of this using LVM too. Im aware of this man ...
0
votes
1
answer
205
views
rhel + parted failed after increasing OS VM disk and rescan
we have VM rhel machine version 7.6
example from lsblk
lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
fd0 2:0 1 4K 0 disk
sda 8:0 0 300G 0 disk
...
- 49
1
vote
1
answer
9k
views
Resize LVM volume with Ansible
Short version: how do you resize/extend a logical volume with ansible?
It includes built-in support for managing both physical volumes and volume groups and logical volumes.
Based on the following ...
- 383
0
votes
1
answer
2k
views
How to increase the free space in a Volume Group in LVM after expend VM disk size
We want to increase the space in a Volume Group in our VM centOS server
For example
from pvs we see
pvs
PV VG Fmt Attr PSize PFree
/dev/sda2 VLwol lvm2 a-- <100.00g <5.09g
...
- 49
1
vote
0
answers
30
views
Ovirt Host not healthy after upgrade from 4.4.0 to 4.4.2 using yum
After I upgraded one of my Ovirt hosts from 4.4.0 to 4.4.2 using yum become a faulty host for the cluster.
I tried to uninstall the upgrade but that didn't help.
After checking the status of the Host ...
- 11
2
votes
1
answer
5k
views
Is my KVM VM thin provisioned?
I was reading another post here Use Thin LVM Volume for KVM VM trying to understand whether or not KVM is capable of creating thin provisioned VMs. The post from about 8 months ago has both the OP ...
- 133
23
votes
2
answers
7k
views
Is it safe to mount the same partition to multiple VMs?
I'm using ubuntu 20.04 with Xen Hypervisor. On my machine I have an SSD that hosts my VM images, and then four sata drives which I have data on. My current set up is to mount the data on my domain0 ...
- 363
1
vote
0
answers
735
views
Dead Citrix XenServer with LVM: How to get the VHDs off the system?
My company recently delegated the task of recovering a fairly old (~2015) Citrix Xenserver to me. The machine had a major electrical fault which caused a hard drive failure and a collapse of the RAID. ...
- 11
0
votes
0
answers
804
views
LVM Logical Volumes will not activate on Cloudlinux 7.8
Recently, after a reboot, the system landed in Emergency Mode. The cause appears to be that the system is failing to mount a few of the disks as defined in /etc/fstab. These disks are Logical Volumes.
...
0
votes
1
answer
171
views
promox is blocked from fully booting by ifupdown2 start job
i have a promox server with ifupdown2 installed.
recently when trying to reboot the entire server promox failed to get to console, it gets stuck on replication runner failing and the ifupdown2 service ...
- 111
1
vote
1
answer
322
views
Arch Linux - KVM - Sharing SSD and HDD between Arch and it's VMs
I'm relatively new to linux and I'm trying to build an Arch linux that will have a gaming VM. I have 2 disks: a 500GB SSD and a 2TB HDD. I've settled on a LVM with a swapfile and extra space for ...
- 115
0
votes
0
answers
50
views
Extend LVM partition
I need to extend existing LVM mounted to /opt. I've created new volume sdb2 and mounted it to /opt, but disk space in df -h output still the same. What esle should I do?
lsblk output:
└─sda3 ...
0
votes
0
answers
1k
views
DD of LVM Partition to another disk drive not working - no space left on device
I have a vmdk attached to my Linux VM instance (/dev/sda). The disk has 2 partitions, as shown below:
Disk /dev/sda: 17.2 GB, 17179869184 bytes, 33554432 sectors
Units = sectors of 1 * 512 = 512 ...
- 1
0
votes
0
answers
223
views
Missing creation time for LVM logical volume
One of our storage has an lvm volume group on which multiple logical volumes are not set the creating host name and time (LV Creation host, time attribute).
These were created quite a long time ago, ...
- 168
0
votes
2
answers
574
views
Monitor Linux Server filesystem health and suspicious activities
I run my own, small server here. The server runs on Ubuntu 18.04. There is one single HDD using LVM on a partition together with EXT4. LVM is used for taking snapshots. I also use Webmin with ...
- 101
0
votes
1
answer
609
views
How can I extend lvm on centos with default partitioning?
I have a centos 7 OS on VM with default partitioning like this:
enter image description here
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 1T 0 disk
sda1 ...
1
vote
1
answer
2k
views
Cannot activate Logical Volume which was managed by Pacemaker
I have two CentOS 7 servers that clustered with Corosync and Pacemaker to work in Active/Passive way. The whole idea was to move the mount point in case of a problem emerges in the active node. My ...
1
vote
0
answers
285
views
Possible solutions for Linux mdadm "raid5" over devices with different sizes?
I have server with 5 disks of 4TB, 2 with 8TB, and 1 10TB.
I'd like to bundle them all together into Raid5/Raid6.
As far as I understand one cannot do it nicely with disks of varying sizes.
But I ...
- 457
0
votes
2
answers
663
views
Disk usage in LVM: Which directories contains most data?
We have following volumes:
$ df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 3.8G 0 3.8G 0% /dev
tmpfs 3.9G 0 ...
- 157
1
vote
0
answers
767
views
Running Windows in QEMU with LVM causes very slow disk acess
I have the problem, that whenever I try to run Windows within QEMU, it seems that disk access is becomming very slow after a short while. Surprisingly both access to the disk from within the VM as ...
- 121
1
vote
1
answer
2k
views
How can I access a LVMs in a partition using a LiveCD?
I have a server running Centos 6 in a data centre that suffered a kernal panic which then prevented the OS from booting (according to the support staff in the DC). The DC support staff also suggested ...
- 11
0
votes
1
answer
866
views
Ubuntu Kickstart - LVM Partitioning using two HDD's not working and fdisk -l output makes no sense on successful single disk deploy
I have read so many kickstart configs and pressed recipes that my head is spinning, and I just need some help or clarification regarding this. Before I go too much into the config, the gist is that I ...
- 101
3
votes
1
answer
354
views
Disable write intent bitmap on LVM RAID1
I want to use LVM on raw devices to be able to dynamically create RAID0 and RAID1 volumes depending on my current needs. I've recently learned that the write intent bitmap feature of mdadm reduces ...
- 767
0
votes
0
answers
790
views
Steps to extend CentOS v8 VM disk space on the fly without data loss?
I need some steps I can follow from the Putty session so I can extend the CentOS v8 VM without losing its data?
I have already extended the disk space in the VMDK into 60 GB from its initial 40 GB.
[...
- 1,305
0
votes
1
answer
393
views
Best way to mirror a large drive onto two smaller ones
I have an 8.0 TB Drive which will soon start filling up with videos
I have two spare 4.0 TB Drives
The system is running Linux Mint 19 Tara and is my desktop system (Yes it's a big system able to ...
1
vote
0
answers
185
views
Prevent LVM from activating all LVs upon connecting SAN storage?
We have a cluster of Proxmox VE servers with shared SAN storage. The storage server provides a big LUN through iSCSI. We use iscsiadm on the PVE hosts to load the storage. Per our workload, we setup ...
- 1,318
3
votes
1
answer
225
views
Replace failing LVM disk with root
This was my first setup so it's a bit messy. Extremely small root volume (3.9GB) which I'd like to increase but the problem right now is that the disk is failing and I need to replace it.
root@...
- 31
0
votes
0
answers
1k
views
terraform - shall one use simple disk or linux LVM?
Is there any drawback of using LVM disks in terraform managed virtual machines?
Currently I come to the project where all disks are simple linux disks, but terraform is unable to resize them up ...
- 491
0
votes
0
answers
369
views
How to reduce size of LVM partition and create another partition?
I have a standard parition and lvm partition on my disk /dev/sda
[root@server1 ~]# fdisk -l
Disk /dev/sda: 10 GiB, 10737418240 bytes, 20971520 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size ...
- 121
0
votes
0
answers
70
views
Extend mirrored LV onto one PV
Legend: Crummy homemade LVM Legend
Mixed: Mixed LV
I need to add space to an existing 1TB mirrored LV (2 1TB disks) with a new 2TB disk yielding 1+2=3TB. How do I do this?
I can't move my data to ...
- 29
3
votes
1
answer
2k
views
Confirming parameters for XFS filesystem and LVM volume striping over 2 ADAPT (RAID6-like) volumes
We are setting up an ADAPT0 (RAID-60-like) configuration for a file server.
We have six disk pools. Each consists of 14 disks and is set up using ADAPT. According to Dell's official white paper, ADAPT ...
- 209
0
votes
0
answers
165
views
Folder in Ubuntu Became a File and the other Show Question Mark in Owner/Group
I encountered a very weird issue, appreciate if someone could help. One of my folder stored in a LVM2 XFS filesystem (mdadm RAID6), silently became a file and a folder showing question mark on both ...
- 39
2
votes
1
answer
1k
views
Why does active-active configuration degrade performance compared to failover?
We are setting up the new storage for an HPC compute cluster that we are managing for applied statistics, bioinformatics, and genomics.
Configuration
We have the main enclosure with a Dell EMC ME4084 (...
- 209
3
votes
1
answer
769
views
How would you (incrementally) backup KVM VMs based on LVM storage?
I'm running a set of KVM hypervisors on LVM storage (unfortunately I can't use QCOW2, because the virtualization platform I'm using is strictly LVM-based).
The virtualization platform has a very poor ...
- 240
0
votes
0
answers
457
views
Centos 7 - Shrink size of LVM Partition
I have a Centos 7 VM which was built from an OVA template. I have it running under Virtualbox.
Issue I have is the VM has a dynamic disk of 200G - but only 4 Gb used.
I want to shrink the partition to ...
- 11
5
votes
2
answers
4k
views
Estimating the time needed for a resize2fs shrink
I have a large ext4 filesystem which I'm currently shrinking (109Tb -> 83Tb in my case), and it's taking an extremely long time (Day 5 as of asking). Currently I can see that the process is still ...
- 163
0
votes
0
answers
4k
views
Can't open /dev/sda1 exclusively. Mounted filesystem? [duplicate]
I'm aware that there are a lot of similar questions about this, I have tried following through the responses but nothing has helped. I'm more than happy to post more logs if needed.
The end goal: Have ...
- 101
0
votes
2
answers
3k
views
several error for pvcreate and lvcreate
I am getting the following error
pvcreate /dev/mapper/mpathd
Error reading device /dev/mapper/mpathd at 0 length 512.
Error reading device /dev/mapper/mpathd at 0 length 4.
Error reading ...
- 103
2
votes
1
answer
3k
views
Shrink Volume Group in LVM on linux with just one disk
I'm using LVM on a single disk and now I need to resize the partition (sda2) I'm using.
I've already resized the Logical Volume but I can't manage to shrink the Volume Group. I know that vgreduce ...
9
votes
1
answer
10k
views
Few questions about creating RAID0 with LVM
I'm little confused, because I found two different instructions about creating RAID0 with LVM. First resource shows way of creating RAID0 wit this pattern:
lvcreate -i[num drives] -I[strip size] -...
- 155
1
vote
1
answer
209
views
find lvm that mounted in virtual machine
long time ago I mounted 3 lvm with same size on a virtual machine. now I want to umount one of them but I can't remember which lvm is mounded on which directory. How can find mount point of lvm in ...
- 11
0
votes
2
answers
1k
views
How to extend hard to an LVM without disrupting current data in CentOS
We have a CentOS server that has 2TB of disk. When we got the server for "god knows why" the partitions were like so:
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 1.8T ...
- 101
1
vote
1
answer
4k
views
(LVM) Moving data to a different physical volume within the same logical volume
I have a logical volume called storage. It contains two ~1TB physical volumes: /dev/sdc and /dev/sdd. smartctl -a /dev/sdd informs me that /dev/sdd is failing. I can still read data off it and I have ...
- 111
0
votes
0
answers
172
views
LVM not able to add free space to Logical Volume
--- Volume group ---
VG Name BKMASTWS01-vg
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status ...
5
votes
5
answers
2k
views
Recommended approach to build a 24-disk pooled SSD hot-set cache: RAID, LVM JBOD, etc?
I'm trying to figure out the lowest hassle way to provision 24x locally attached SSDs as a large logical volume with low-value data. I'm using them as a hot-set cache for data who's master state (...
google-cloud-platform
5
votes
3
answers
8k
views
(LVM) Cannot restore Volume Group with 1 PVs marked as missing. Couldn't find device with uuid, but the pv exists and blkid finds the same uuid
This problem is on a kvm/qemu hypervisor with CentOS 7, where we host multiple virtual machines.
The Disk /dev/sda( 1918.2 GB) is a raid6 LSI MEGARAID.
[root@mia3 ~]# fdisk -l
Disk /dev/sda: 1918....
- 61