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

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375 views

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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1answer
641 views

Multipath to a logical volume in a staging VM

How do I configure multipath in testing VM (purpose is purely academical)? I made new logical volume, modified multipath.conf to be as follows: defaults { udev_dir /dev ...
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2answers
5k views

device mapper on RHEL6 unable to create devs for LVM logical volume

I have XEN guest running RHEL6, and it has a LUN presented from the Dom0. This contains an LVM volume groups called vg_ALHINT (INT for Integration and ALH is an abbreviation of its Oracle database ...
2
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1answer
135 views

Why is df -h size, util and dispo not corresponding to each other

When I'm using the command "df -h" I'm having the following output : Filesystem Size Used Avail Use% Mounted on /dev/mapper/fedora-root 20G 9,4G 8,8G 52% / devtmpfs ...
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2answers
165 views

Why is LVM metadata backed up to /etc/lvm and not /boot?

Recent question I saw got me thinking on this particular point: If bootloader restrictions usually cause /boot to be outside LVM, why isn't this the target of LVM metadata backups? Putting it ...
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2answers
560 views

Transfering whole linux system to a new disk

Few weeks back I installed linux as a virtual machine on my windows 7 system but I didn't gave much thought to(or miscalculated) the size of various partitions and even worse I'm not using 'lvm'. ...
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2answers
2k views

Reduce LVM /tmp size to 10G and add everything to / root dir

I want to reduce the partition mounted at /tmp to 10GB and add all unused space to the / partition. If I umount -l /tmp and run fsck.ext3 -f /dev/privg/lv_tmp, I get this: fsck.ext3: Device or ...
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1answer
3k views

Devices get renamed when SATA disk attached

I have an HP xw8200 workstation running linux with two small, fast SCSI drives hooked up to the onboard LSI SCSI controller. The drives get labeled /dev/sda & /dev/sdb in /dev, respectively. I ...
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2answers
283 views

Recreated VG. Is it possible to add existing LVs to it?

I had a CentOS 5.5 server with two drives in it (sda, sdb) using LVM. sda had a combination of physical partitions and LVs. sdb had one volume group named data with multiple logical volumes. There ...
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1answer
195 views

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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1answer
20 views

merge 2 LVMs both have data and on same Volume Group without data loss

I have 2 lvm partitons on the same volume group and im wondering if i can merge them to one lvm without data loss the way i know that i have to create a new physical volume and extend the volume ...
2
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1answer
90 views

Can BTRFS stripe RAID arrays?

I've been using an Ext3/4+lvm2+mdadm file system setup for about 5 years on a file server. This has grown (and moved processors a couple of times) and I've moved disks between systems ...
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2answers
91 views

Does the debian setup with lvm also encrypt the swap partition?

I'm planning a fresh debian install on my notebook and want to have full disk encryption. But I mainly hibernate, which is why I want my swap to be encrypted as well. During the graphical expert ...
2
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1answer
178 views

How to delete a virsh pool without volumegroup?

My virsh version 0.9.12.3 I created a Volume Group Pool via virsh. virsh pool-define-as vg1 logical --source-name vg --target /dev/vg Bad thing is, that /dev/vg does not existent, I made a typo. ...
2
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1answer
222 views

Would this LUKS LVM rsync restore method work?

I have an Ubuntu installation using LVM and LUKS encryption. LVM and encryption were chosen during the install process). While logged into it, I backup the full live system using rsync to another ...
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1answer
2k views

No logical volume groups found, LVM stuck at boot

I'm running Ubuntu 14.04 (64bit). Long story short, I've compiled a custom kernel and now I'm running into some issues with my encrypted hard drive. When I boot my machine and attempt to start the ...
2
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1answer
4k views

LVM not coming up after reboot, couldn't find device with uuid

Had a VM that was, up until recently working without issue, but needed to be rebooted after some configuration changes. However after rebooting the VM didn't come back up, saying it couldn't find the ...
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1answer
309 views

Can I convert an existing LVM VG to a stripe (RAID0 eq)?

I have an existing LVM volume group of 3 disks (ext4), with 4 logical volumes. Not quite ready for the leap to a nextgen FS, I would like to balance the load on the disks. I have seen you can create ...
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1answer
71 views

How do I see what logical volumes are on a physical volume?

I have a volume group composed of dissimilar drives - an HDD and an SSD. I'd like certain LVs to live on the SSD. I can suggest this to lvcreate when creating new LVs, and I can move things around ...
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1answer
1k views

I/O errors on Linux LVM

I have a CentOS 6 box with LVM setup and one of the PVs is a USB disk (I know). One of them is getting the error: Oct 30 10:57:07 alpha01 kernel: lost page write due to I/O error on dm-3 Oct 30 ...
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1answer
481 views

Recover MDADM Raid 5 in LVM with badblocks

I'm pretty sure I'm dealing with at stuffed RAID 5 array. Two of the drives were listed as failed in /proc/mdstat and mdadmdetails: 0 0 8 33 0 active sync /dev/sdc1 ...
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1answer
2k views

VBoxManage: Error: Can't be used as the requested device

I used the soluton from this thread but always i get VirtualBox error: The medium 'lvol.vmdk' can't be used as the requested device type (0x80004005) I've tried all controllers SATA, SCSI, IDE and ...
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3answers
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New menu entry in GRUB2, “file not found” and “you need to load the kernel first” errors

I wanted to add new menu entry to my GRUB2 list. This is how I tried to do this and necessary info: Erros after choosing "Debian Wheezy" menu entry from GRUB2 list: error:file not found error:you ...
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1answer
2k views

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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3answers
737 views

Recovery of data on raid5+lvm reiserfs partition, after raid5 problems

I've got a server with 3 sata hard drives. Each has 2 partitions: one small is part of /dev/md0, a raid1 array (/boot), rest is part of a raid5 array (/dev/md1), which is an lvm physical volume. ...
2
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1answer
436 views

curious soft raid 5 setting inconsistency

Lately I bit the bullet and upgrade my OS from Fedora 11 to Fedora 15, and I've been trying very hard to figure out why Fedora 15 can't see the Raid setup that I created in Fedora 11. I think I must ...
2
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1answer
415 views

LVM tools on raw block copy

I have several raw block copies of disks that have both NTFS and Linux partitions. The parition tables generally have both a Windows NTFS partition and a Linux LVM partition. I need to work on all of ...
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20 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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0answers
15 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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1answer
14 views

How to reduce ext4 rootlv on centos 6

Is there a way to perform a safe reduce in rootlv at rescue mode? Most of the internet's explanations tells, basically, that it can be done using the following steps sequence: vgchange; fsck; ...
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24 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 ...
2
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1answer
35 views

Thin LVM pool frozen due to lack of free space, what to do?

My thin LVM pool got full and some programs hung: device-mapper: thin: 253:4: reached low water mark, sending event. device-mapper: thin: 253:4: no free space available. INFO: task jbd2/dm-6-8:742 ...
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214 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 ...
2
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1answer
63 views

What is the UUID format used by LVM?

Linux LVM assigns UUID values to physical and logical volumes but they aren't valid RFC4122 UUID strings. Here is an example: 2185fe86-41d4-4311-9a47-8f0ebc7ecc5a RFC4122 ...
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269 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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146 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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216 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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43 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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1k 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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15 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 ...
2
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2answers
510 views

KVM linux guest, 2nd HDD, LVM partition or whole disk

I've got a RAID 10 arrays on a couple of KVM host machines. The RAID 10 array is one big VG. I usually create a small LV for guest disk image storage then the rest of the VG I carve out as LVs to add ...
2
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2answers
527 views

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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174 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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1k 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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2answers
7k views

Change Partition Table with GParted

I have an Ubuntu 12.04 LTS server that has 6x600GB SAS drives in a RAID 5 configuration (Perc 6/i). The partition scheme looks like this: Partition File System Mount Point Size /dev/sda1 ...
2
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1answer
317 views

LVM keeping harddisk awake?

I have a Lenovo W530 running Arch with kernel 3.79 (for bumblebee) and laptop-mode is configured properly and running. It has one SSD (sdb) and one harddisk (sdb). The sdb disk has two lvm-volumes: ...
2
votes
1answer
671 views

Problem with permissions when sharing a mounted filesystem

I am setting up a linux to act as a fileserver, using CentOS 6.3. Since I want to have disk quotas and can't install LVM (it is a 32 bit machine), I am using an LVM volume with ext4 mounted as ...
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1answer
3k views

Install Backtrack 5 r2 into running LUKS setup installed with ubuntu

One Harddisk (sda) Two Partions. With a working ubuntu running. 1) /boot 2) LVM with this virtual volumes/partions/ or whatever they are called inside: Swap Ubuntu Home Prepared for Backtrack Of ...
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542 views

Migrate an entire volume group LVM2 to RAID5

I have a Virtual Host server build with Ubuntu and Xen SO Ubuntu 12.04.1 LTS 64Bits xen-hypervisor-4.1 Disk Hitachi SAS 15K 147GB (x2) in a Volume group sda1 1GB /boot sda2 146GB lvm sdb1 ...
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101 views

How to find the underlying disks of a mirrored volume in LVM (linux)?

When I run command lvs -a the output shows the logical volumes from which the mirrored-volume has been made but how to find the actual disks from which the sub-logical volume were allocated. Any ...