LVM is a logical volume manager for the Linux kernel

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Different behavior of 2 encrypted LVMs

recently i created ext4 on top of luks on top of lvm. about 20gb. i also have similar configuration (900gb) created long time ago - i don't remember how exactly i created it. both are not mounted on ...
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24k views

How is Trim enabled? [duplicate]

I have heard, that Ubuntu 14.04 will have Trim enabled by default. How will this be done? By adding a discards option to the ext4 mount options or by running a cron-job? Will the default options for ...
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1answer
76 views

Howto make “update-grub” to ignore guest volumes on a KVM Hypervisor?

I have some Ubuntus acting as a KVM Hypervisor and, every time I run "update-grub" on those servers, it takes a lot of time to finish and makes too much disk IO. I'm seeing that it tries to find ...
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How to increase the size of LVM partition on headless system?

I have a 320GB HDD and becoming full, and got a new 1TB HDD and wished to migrate everything to it. I am using LVM. I cloned the hard disk using dd, and extended /dev/sda2 to maximum available ...
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2answers
53 views

Move a system from LVM to standard partitions

I need to move a system which uses LVM to a system which uses normal partitions. I created the partitions on the new hard drive and I copied all the content of the root and boot partition to the new ...
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615 views

Unlocking Encrypted Root (LUKS on LVM) with “hidden” USB Keyfile

I have a Ubuntu Server 13.10 machine. Its root partition is encrypted with LUKS, which is then stored in a logical volume. On boot, the LV is mounted and then cryptsetup requests my passphrase; once ...
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66 views

Booting from LVM partition

I screwed up when I installed my machine awhile back and put the / partition (including /boot) into the LVM. While the machine will eventually boot, it won't boot non-interactively. For whatever ...
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265 views

Server 13.10, Raid1, LVM, EFI booting on 2nd disk

I've read a whole bunch of posts of trying to get your Raid1 to boot up on the second disk if the first one failed. Nothing has failed yet, but I'm trying to test my setup. 2nd drive comes up with ...
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996 views

LUKS and LVM install: no boot (gave up waiting for root device)

I just finished installing 12.04 on my system, configuring it with LUKS and LVM. I can open the encrypted position just fine in a recovery disk, but I just can't seem to get it to boot. It waits ...
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121 views

How to extend logical volume swap space to atleast 64 GB on SSD

My current configuration of physical volumes is as follows. --- Physical volume --- PV Name /dev/sda5 VG Name vgssd PV Size 190.89 GiB / not usable ...
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How to remove encryption from volume during installation

I'm currently in the process of installing Ubuntu Server 12.04 onto a fresh build. I have two 3TB hard drives that I'd like to run in software RAID 1, and was following this tutorial. During ...
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59 views

Help, installed Ubuntu with LVM2 and Raid1 - Mystery of the time traveling computer

I am a relative Linux novice, so please bear with me. A few years a go, I installed Ubuntu Server 11 to act as household web/email/file server. I had decided to move on from a Windows Server ...
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86 views

Help recovering eCryptfs user data

Ubuntu 13.10 x64 Chose LVM partitioning when I installed Here's the story from the beginning... I had a problem with the fglrx drivers preventing unity from starting correctly so I tried to repair ...
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1answer
291 views

Format USB stick using LVM?

Is it possible to format a USB stick using LVM? I am interested in LVM because apparently it allows you to create instantaneous snapshots for backup purposes.
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38 views

Resizing Ubuntu 13.10 partitions

I installed Ubuntu 13.10 to this device ( picture below ) , and it has the following partitions on the picture below, i can't resize the extended partition, i want to create a NTFS partition on same ...
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22 views

Lv not showing correct in fdisk

I am working on a project with iscsi to create a iscsi-target and initiator. Right now i made a logical volume which looks like this: But when I do fdisk -l it shows: The problem is why does it ...
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41 views

Ubuntu partitions after installation

I installed Ubuntu 13.10 to this device ( picture below ) , and it has the following partitions on the image below, i can't resize the extended partition, i want to create a NTFS partition on same ...
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2answers
6k views

What are the advantages/disadvantages of the new encryption feature in ubuntu 13.10

I'm in the middle of installing 13.10 and the Ubuntu page I was following on how to install from a USB stick says nothing about these two choices (on the Installation type screen): 1) Encrypt the ...
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238 views

Help on resizing my LVM partitions

I need help on resize two LVM partitions as I'm afraid of loosing data. I'm using Ubuntu Server 12.04 headless mode. LVS: root@server:/# lvs LV VG Attr LSize Origin Snap% Move Log ...
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Mounting /opt/mongo on new partition or resize primary partition on VMWare server

i was assigned to add space to our virtual machine running ubutnu 12.04 LTS. Our provider increased disk space in VMWare and i now need to expand it from the system. The server has only one primary ...
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1answer
59 views

Why I cannot format the partition with Ubuntu?

I have a problam with formating my Ubuntu partition. I installed Ubuntu yesterday, after the succesful instalation i noticed that i have lost every data on my disk. Today I try to reinstall windows ...
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3answers
55 views

Partition the disk Without rebooting

How to extend the partition table Without rebooting? The change should be informed to kernel without rebooting.
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111 views

Booting monolithic kernel: cannot find root fs by UUID

I have built a monolithic kernel with the grsecurity patch, since I don't need many modules for the system and I need to optimize space. When trying to boot the new kernel, it yields a busybox shell, ...
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Setting up LVM Snapshot as a backup/restore point in ubuntu [closed]

since I could not find how to post this as a blog/post/tutorial in AskUbuntu.. I decided on posting it here, were it is best exposed anyhow ... Setting up LVM Snapshot as a backup/restore point in ...
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271 views

Is it safe to disable resize_inode on ext4 FS?

I have 2TB spanned LVM ext4 volume which contains large and mostly static files. With "static" I mean they usualy don't change in time. The volume is 99% full, and adding new files becomes very slow ...
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126 views

“ubuntu” shows up in boot menu, but my laptop keep telling me that “No OS detected”

I tried to intall ubuntu 13.10 on my Acer Aspire 4750 yesterday, and I think I make a mistake choosing that "LVM" option. Now I am facing these : "ubuntu" option now shows up in my boot menu. ...
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153 views

How to clean /dev/nbd device that makes processes to hang?

I am using devstack on Ubuntu 13.10. Once in a while lvs hangs when cleaning the stack. After some investigation, I found that the issue seems to come from a "corrupted" nbd device. Any process that ...
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577 views

Logical Volume, Physical Volume and Volume Groups

Please can someone explain to me the meaning of Logical Volume, Physical Volume and Volume Groups? Of what importance and advantage are they in linux?
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114 views

How to map /dev/mapper

My actual LVM's are like: 1.LV Name /dev/VolGroup/lv_root VG Name VolGroup 2.LV Name /dev/VolGroup/lv_swap VG Name VolGroup But in ...
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1answer
84 views

Using LVM with two hard drives, 1 Solid State

I am setting up Ubuntu and just got to the option about using LVM to partition the hard drives. My understanding is that if I do this Ubuntu will be able to treat the two drives as one. That's great, ...
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37 views

Shrinking logical partition

Im trying to resize(shrink) my ubuntu partition. Ive done the following things: -checked GParted which returns 2 partitions: one which says extended under filesystem, which encases the second volume ...
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266 views

Ubuntu 12.04 Unable to automatically remove LVM data

![Unable to automatically remove LVM data][1] I am trying to install ubuntu 12.04 via preceed config onto Dell PowerEdge R710. I had RedHat installed on the box then I tried installing ubuntu 12.04, ...
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263 views

Ubuntu Server 12.04: Boot hangs with error "udevd[538] inotify_add_watch(…) failed: invalid argument

I'm currently faced with the following situation: when rebooting a Ubuntu 12.04 LTS server after updating (it ran perfectly for a year or so, I updated it around two months ago and rebooted with no ...
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1answer
429 views

Lubuntu 13.10 Alternate install with LUKS LVM partition “adding additional” step failed

Setting up a dual boot Lubuntu and Windows 7 system on an old Gateway netbook. There are 3 existing Windows partitions, and during the Lubuntu install, I created two logical partitions, a small one ...
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Combine two hard drives

I have a PC with 2 physical hard drives, each is 500 GB (sda and sdb) I'd like to combine them in one large hard drive (1T). I couldn't find a clear approach on how to do it. I tried LVM with no ...
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230 views

LVM logical volumes do not activate on boot on 13.10

I am running an UbuntuGNOME 13.10 and I set it up without an LVM during the installation process. I am now running it with to encrypted partitions, one is containing a LVM. This all works fine, ...
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How to fix broken upgrade on Ubuntu Server on USB thumbdrive with Encrypted LVM

Oh woes is me: I decided to do a do-release upgrade on my workstation and managed to bork my production workstation. My setup was as follows: 32GB usb key that Ubuntu Server booted from - this ...
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2k views

encrypted 13.10 will not reliably boot

EDIT: SOLVED! see http://askubuntu.com/a/403876/212688 i re-installed ubuntu 13.10 x64 on my vaio pro, in legacy, bios mode. the installation is lvm/luks encrypted and thus asks me for the encryption ...
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1k views

LVM volume not accesible after accidental drive removal, now LV Status is suspended

I have a home server with a pool of 3 drives, and the OS installed in a thumb drive, this thumb drive had physical errors and I had to reinstall the OS, the LVM pool was working well after thumb drive ...
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1answer
5k views

How to resize partition that is inside “Linux LVM” partition

How to resize partition that is inside "Linux LVM" partition in 13.10 Ubuntu? I transferred Ubuntu installation from 160GB to 500GB disk. I have successfully resized sda3 partition using Ubuntu LiveCd ...
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3answers
359 views

Can't update: low space in /boot (LVM) - I already cleaned my Lubuntu with Ubuntu Tweak

I have low space on /boot partition and I can't update my Lubuntu. I have LVM. I deleted old kernels and used Ubuntu Tweak. I tried to loaded from LiveCD and with gparted grow up my /boot-size, but ...
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1answer
105 views

My server is making me download the code instead of running it

I am running an ubuntu server 12.04 but unfortunately I am not being able to make the interpreter run the code exactly. I am using nginx encrypted lvm and here is the conf.d (main part): server { ...
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30 views

Do I need lvm password and passeord for my user-account

Just install an new copy of Ubuntu 13.10 Now it give me the option to make an password on my lvm-volume.. But then I have to password to write, to do an full login! My lvm-password and password for ...
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4k views

XFS File System Fails - Can't read Superblock

After this (Iomega Home Media disk corruption - data recovery help asked) problem solved... i have a new one.. I'm trying to understand why my Iomega Home Media Stopped working, and need for that to ...
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1answer
80 views

How can i know whether the LUKS is using passphrase or key file for authentication purpose?

Lets an example, i have a Linux partition /dev/sda6 and already encryption been enabled with DM-crypt (cryptsetup) tool. As i know dm-crypt can have two way of authentication like with key file or ...
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551 views

LVM on encrypted partition drops me to initramfs root missing

I installed Ubuntu 13.10 64bit on my PC. I have single hard disk (/dev/sda) with LVM encrypted partition. So the problem is that after reboot I cannot start Ubuntu (it dropped me to initramfs prompt ...
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2k views

Understanding output of lvdisplay in LVM/Linux

I am new to Linux admin field I just want to know the meaning of following fields in lvdisplay output root@sandbox: lvdisplay rootvg/swaplv | grep -i '# open' # open 2 root@sandbox: ...
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3k views

How to create LV(Logical Volume) after ubuntu is installed?

everyone. I need to create LV for xen guest. There is only one disk of 70G. While installing, I use the default process and not the LVM. Do I need to reinstall Ubuntu to create the LV? Is there some ...
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1answer
1k views

ELF Header Smaller Than Expected

I am running Ubuntu 12.04 LTS LAMP server, and it won't boot. This problem started when I was trying to clean up /root and accidentally deleted all of the kernels using apt-get remove. I was able to ...
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1k views

Attempting to read LVM disk in ubuntu

I pulled a disk formatted in LVM from a NAS after the device failed, and need to recover the data, but I can't seem to get it to mount. This is the closest I got: root@peter-desktop:/home/peter# ...