2
votes
3answers
139 views

Repartitioning already mounted logical volumes

This is my current disk state on a physical CentOS machine: Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_ecomwise-lv_root 50G 47G 267M 100% / tmpfs ...
0
votes
2answers
51 views

LVM: How to re-use unwanted logical volume space on an existing volume

We have this old CentOS4 box and I am trying to increase the space. I want the full 8GB to show up in a "df -h" but it shows only the first Volume of ~4GB. How can I add the 2nd volume to the first? ...
2
votes
1answer
112 views

Do I need to enable LVM at install time?

I'm setting up a CentOS dedicated server and I would like to use LVM (it's the right thing to do, isn't it?) The thing is, I'm not sure if I have an option to enable LVM at the time of installation. ...
1
vote
1answer
68 views

Does 'lvremove' destroy data?

I assign a LV for each vm guest. When deleting a vm, I remove the corresponding lv running 'lvremove'. But is it necessary to destroy the data before running 'lvremove'? Does lvremove do the work of ...
1
vote
0answers
110 views

Need help recovering RAID 6 array

My CentOS 6.5 server had its primary drive fail the other day. Our hosting company replaced the primary drive and reinstalled the OS. The system is up and running, but the 15TB of RAID6 storage isn't ...
0
votes
1answer
66 views

Shrink a mounted LVM partition

I fear I already know the answer to this question, but here goes. I need to carve out a new partition on a running system. /var/ is mounted from an LVM volume (hdd1_vg-var) and has only 3% used disk ...
0
votes
2answers
129 views

CentOS LVM: how to resize root lv

I took over a virtual server at work after a co-worker left. He, however, setup the server incorrectly at multiple stages and im cleaning them up as I run into them... Currently I realized that the ...
0
votes
1answer
184 views

How to get Mondorescue to work with LVM2 (CentOS 6.4)

I'm trying to make an emergency recovery disk with Mondorescue to: Restore my server in case of hardware (or severe software) failure. Make an "identical" server setup for debugging and staging. ...
4
votes
2answers
89 views

CentOS partition reporting out of space

I have CentOS server with 7 partitions and 2 of them are LVM partitions one is divided as 2 LVM partitions. While working with the production software the disk suddenly gets full in a folder that is ...
-5
votes
2answers
340 views

How to convert lvm to ext3/4? [closed]

I have an old box(CentOS 5) that was formatted as lvm but now I want to convert it to ext3/4 file system without losing data. I have some empty disks that can be used, so is there an easy way to do ...
2
votes
2answers
2k views

Device /dev/sdb1 not found (or ignored by filtering)

I am trying to add a physical volume for use to add volume groups and thus LV inside them. Sadly I am getting the following error. [root@server ~]# pvcreate /dev/sdb1 Device /dev/sdb1 not found (or ...
0
votes
1answer
20 views

Taking storage from swap and adding to LVM

My current output of df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 20G 2.1G 17G 11% / tmpfs 64G 0 64G 0% /dev/shm /dev/sda1 ...
0
votes
1answer
106 views

Add new partition to Centos hard drive

My hard drive currently has (I believe) 2 partition; boot (sda1) and everything else (sda2?). Some of the hard drive is also being used as swap memory, but I don't really understand how that effects ...
0
votes
1answer
2k views

How to change Volumegroup PE size

I am trying to increase the PE size of one of my Volume groups. I mistakenly set it as 4M to start when it should have been 32M . When I try to change the size I get vgchange -s 32M the_vol New ...
2
votes
1answer
1k views

XFS slow performance on LVM'ed RAID, faster when RAW or non-LVM

longtime user of this website, first time poster. I have a weird issue with a server I am setting up. It's for a filesharing-type website, so fast IO and plenty of capacity are the requirements. OS ...
4
votes
1answer
131 views

Logical Volume Recovery

I have a machine with 180 or so logical volumes as well as an OS partition that were wiped out with a format when reinstalling centOS6. I made a terrible mistake, not being familiar with the interface ...
2
votes
1answer
1k views

Redhat cluster Vs Pacemaker Vs Gluster Vs Sheepdog

Changing the entire question as earlier one was very confusing. I have been exploring different clustering system to run Virtual machines on two different machines on LAN with high availability. ...
1
vote
0answers
240 views

what is an lvm floating range? [closed]

I've heard of something called an "lvm floating range" however I am unable to find any information about it on google. Can someone please explain this? I found it in an exam sim.
1
vote
2answers
398 views

add space to virtual disk on vmware

I have a VMWare Server 3.5 system with 2 VMs. On one powered on vm I changed the disk size from 1TB to 1,5TB. But the vm didn't see any new unallocated space so that I reboot twice the server. But ...
13
votes
4answers
4k views

Improving IO with FlashCache

I have a server with 2 HDD's (2x 1 TB), running in RAID 1 (SW-RAID). I want to improve IO performance by using flashcache. There are running KVM virtual machines on it, using LVM. Regarding this, I ...
2
votes
1answer
387 views

Moving /var from LVM to a non-LVM disk

I inherited an LVM based centos setup where root is at an LVM partiton. I want to move my /var to a new harddisk without adding it to the LVM group. Is it possible to mount the new harddisk to /var ...
0
votes
1answer
413 views

disk showing busy

Want to create LV Group but when i unmount /dev/sda5 this showing [root@xen01 ~]# umount /dev/sda5 umount: /: device is busy umount: /: device is busy This means disk /dev/sda5 is ...
1
vote
2answers
340 views

Kernel panic when bringing up DRBD resource

I'm trying to set up two machines synchonizing with DRBD. The storage is setup as follows: PV -> LVM -> DRBD -> CLVM -> GFS2. DRBD is set up in dual primary mode. The first server is set up and ...
1
vote
0answers
429 views

I/O error on non-existent device?

Getting the following in /var/log/messages: Sep 17 10:38:53 server1 kernel: end_request: I/O error, dev sde, sector 0 Sep 17 10:38:53 server1 kernel: end_request: I/O error, dev sde, sector 63 Sep 17 ...
0
votes
1answer
43 views

Can I use free space of a used partition as Volume Group?

Is it possible to use free space of a partition mounted on / as volume group? I mean creating VG on that free space, does it cause any problem?
0
votes
0answers
592 views

XEN Domain crash - kernel panic

I have a server with CentOS 5.8.Final, running the 2.6.18-308.4.1.el5xen kernel. I installed the Virtualizorpanel 2 months ago and my VPS are OK, but yesterday one of my VPS crashed. I changed theRAM ...
3
votes
2answers
1k views

Rebalance CentOS / RHEL Ext4 LVM assignment

Our corporate standard is CentOS (which seems to prefer LVM), and I come from primarily a non-LVM background, so I'm treading new ground with this issue. I inherited an older machine as a log-server ...
3
votes
1answer
1k views

CentOS Kickstart on KVM doesn't clear partition labels

I used a kickstart file with the command clearpart --all --initlabel to make sure anaconda would clear any disks before trying to create and format new partitions. This has worked in the past for me, ...
3
votes
1answer
144 views

Uneven utilization of disks in xfs-formatted logical volume

We have a backup server with 66TB of available space, set up like so: 12 6TB RAID10 arrays -> 12 PVs -> 1 VG -> 1 LV -> xfs This filesystem is used exclusively for backups (through BackupPC). It ...
0
votes
1answer
384 views

How to access partitions inside a logical volume from the host machine?

On a Virtual Machine Host Server I have a logical volume, /dev/my_volume_group/some_disk. The Logical volume "some_disk" has two partitions on it that were created by the guest machine. A swap and an ...
3
votes
1answer
402 views

Metadata too large for circular buffer - alternatives to restoring configs or migrating LVMs

We ran into a problem when a set of PVs were added without using the appropriate metadata size. Consequently, we cannot add and remove volumes, create or remove snaps, run vgreduce and pvmoreve or any ...
0
votes
1answer
393 views

iSCSI storage, partitioning and LVM

We are in the process of moving our (direct attached) storage systems to an iSCSI based consolidate storage and we have come up with this interesting question: where should we place LVM processing? ...
1
vote
1answer
377 views

Creating Xen backups

I'm looking for a way to create Xen (HVM) backups, using LVM. I know xm save but that is a) inefficient space wise, b) the VM will shut down. I found rsnapshot which is able to create an LVM snapshot, ...
0
votes
2answers
516 views

Add drive to Logwatch disk space check

I'm looking to add a LVM volume to a Logwatch report for a Xen dom0. Currently this LVM volume doesn't show in the report as it is not mounted on the machine but is a physical drive. Any ideas on how ...
2
votes
0answers
187 views

What is the default metadata size in temporary volume during a pvmove?

I ran into an interesting error when attempting to address a particular problem. We had an issue where we have to move the extents over to new physical volumes because the metadata size was too ...
0
votes
1answer
266 views

Successfully reduced LVM partition in CentOS, but other programs still see it as it's original size?

I'm trying to restore a clonezilla image of a server that had a total disk size of 1TB, however the server I need to restore to only has 400GB of space available. I figured by reducing the mounted ...
-3
votes
1answer
219 views

LVM Limitation in any Linux/Unix

What is LVM limitation (space in GB/TB/PB/EB) in any Linux/Unix?
1
vote
2answers
487 views

Dead software RAID CentOS 6

I have a RAID 5 array (with LVM on top) on a CentOS 6 box. The array itself is an LSI StorageTek disk shelf with 14 drives connected to the server with a fibre channel cable. After rebooting the ...
1
vote
2answers
530 views

RAID1 and RAID5 configuration - LVM

I have a dedicated server, which has the following: 2 x 146GB drives in RAID1 - configured 3 x 600GB drives in RAID5 - unconfigured The 2 x 146GB drives are currently dealing with everything, such ...
0
votes
1answer
429 views

Increase Space of /usr directory in Cent OS

I have php 5.1.6 running on my CentOS 5 server running Apache 2.2.3 I run Command as: fdisk -l gives output Disk /dev/xvda: 100.0 GB, 100000595968 bytes 255 heads, 63 sectors/track, 12157 ...
1
vote
3answers
2k views

Centos Xen resizing DomU partition and volume group

I have a setup like so: Dom0 LV | DomU Physical Disk | | XVDA1 XVDA2 (/boot) (DomU PV) | VolGroup00 (DomU VG) ...
0
votes
3answers
354 views

How to add existing /home on MDADM RAID to new LVM based OS install

Have (32-bit) Centos 5.6 file server with 2x1TB HDD/ext3 in MDADM RAID-1 as follows: Disk /dev/sda: 1000.2 GB, 1000204886016 bytes Device Boot Start End Blocks Id System ...
4
votes
1answer
394 views

Rebuild Software RAID1+LVM after OS change (from Ubuntu to CentOS)

I think the title is pretty self-explanatory about my current situation, but here is the long version: I am currently running Ubuntu 9.04, I built a RAID 1 array with two disks and then used LVM to ...
1
vote
3answers
790 views

size lvm snapshot

I'm configuring an openvz node and would like to use lvm snapshot for backup (I do remote backup too). The snapshot size is the same that data in the backuped partition ? If I have a logical volume ...
1
vote
1answer
668 views

Clone and Restore CentOS Server. Raid/LVM

I have a CentOS server, and I want to create an exact copy of it. The device has a single 128MB drive mounted as /boot. I then have a 4 drive Software Raid 5 array, with 2 Logical Volumes on it. ...
1
vote
5answers
609 views

Cloning a linux system from sdx to cciss

I have an HP ML 310 server running CentOS Linux 5.5. I'm buying a RAID card (LSI 9260-8i) to set up a mirrored OS drive. Right now, the boot drive is set up with GRUB installed on the MBR of ...
3
votes
3answers
1k views

How do I move a Logical Volume from sda to sdb?

How can I move a Logical Volume from one volume group on /dev/sda to a new disk /dev/sdb which has a new volume group on it?
0
votes
2answers
640 views

Backup, Migrate or Clone Failing CentOS 4 (LVM)

I've been running a BlueQuartz CentOS 4 system (Nuonce.net distro) for a few years now and although the hard drive (Deskstar) has always been a bit noisy, on a few recent occasions I've heard it ...
8
votes
3answers
5k views

LVM volume group shared between KVM/libvirt host and guests: is this a bad idea?

I have just built a shiny new KVM/libvirt-based virtual machine host, containing 4 SATA II hard drives, and running CentOS 5.5 x86_64. I have decided to create virtual machine disks as logical ...
1
vote
1answer
795 views

List existing LVM2 tags

Adding tags to LVM volumes and showing volumes that possess that tag is easy and works like a charm; but somehow I can't find a way to list all tags in use, or to show tags that apply to a specific ...