0
votes
1answer
46 views

dd output file larger than input file when executed with conv=noerror,sync

I am trying to backup an LVM on one of my servers with the following command: dd bs=4M conv=noerror,sync if=/dev/vg_volgroup/LvmName | ssh myuer@myip "dd of=/home/myuser/LvmName bs=4M ...
2
votes
1answer
78 views

Creating “Odd” Size Disks in VmWare/Linux

I believe I suffer from "everything must be in powers of 2" syndrome. When asked to create a 30G disk in VmWare for a VM I want to create a 32G disk. If someone needs 256G of storage using LVM I ...
0
votes
2answers
349 views

Multiple 2 TB LUNs — ZFS or ext4-over-LVM

I am going to deploy an Ubuntu 12.04-based archiving system. Due to limitations of the SAN Storage, it can only present me with 2TB LUNs. So, I have to merge multiple 2TB LUNs to achieve the desired ...
-1
votes
1answer
69 views

Storage virtual machine. LVM or loop devices? [closed]

Actual situation: I'm the administrator of a virtual machine. The virtual machine is a Debian. This machine will be mainly a storage machine with different services (svn, ftp... ), and a webserver. ...
1
vote
2answers
183 views

Physical disks comprising a Volume in RHEL

How do I list the physical disks and associated information (disk model, size, etc.) for all disks that are members of a physical volume in RHEL? For example, if I do I "pvscan", I get the following ...
-2
votes
2answers
83 views

Solution to manage data server with multiple drives

I'm looking for some pointers on the best way to manage a Linux data server, with 20 hard drives and with new files always being added (around 30GB/day). Performance is not important, reliability is ...
1
vote
1answer
76 views

Extending Ubuntu LV - added new HDD

I have installed a new hard drive into my pc and followed this guide to extend the logical volume but I have barely gained any space? ...
1
vote
2answers
907 views

ZFS/Btrfs/LVM2-like storage with advanced features on Linux? [closed]

I have 3 identical internal 7200 RPM SATA hard disk drives on a Linux machine. I'm looking for a storage set-up that will give me all of this: Different data sets (filesystems or subtrees) can have ...
-2
votes
4answers
411 views

How can I create one big volume from multiple drives, but loose only the files stored on one disk if it fails?

I am running a storage system. Fault tolerancy is handled at application level (files are stored on multiple servers, even datacenters). Therefore I don't need nor even want redundancy within one ...
0
votes
1answer
391 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
717 views

Adding 4TB local SR to XenServer 5.6 SP2

I'm trying to add a secondary local SR to XenServer but not having any success. The server has two RAID 10 arrays; the primary array was selected for VM storage in XenServer setup - it totals 272GB. ...
4
votes
1answer
1k views

Is Microsoft's “Storage Spaces” just LVM for Windows? [closed]

From initial reading, it looks like Microsoft's forthcoming "Storage Spaces" is an LVM-like tool for Windows. Is this a correct assessment? If it's not merely LVM-for-Windows, then what is it, and ...
2
votes
1answer
274 views

Growing a LVM volume with striping

I'm considering using LVM striping over several EBS volumes. So let's imagine the following case: Volume group DATA is created with 3 physical disks sdf1, sdg1 and sdh1. I create a logical volume ...
5
votes
2answers
1k views

LVM: resize2fs not resizing

I'm having a weird issue with resize2fs. I've performed all the commands and they all have been successful, however, my filesystem is the same size as it was before: [oracle@server~]$ df -h /backup ...
5
votes
7answers
4k views

Do you lose everything when you have a hard disk failure in a multi-hard disk LVM that does NOT use RAID?

I'm debating about using LVM for a media/file server because I would like to combine multiple physical hard disks into one volume. I do not wish to use any RAID in my LVM so my question is: If one ...
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 ...
5
votes
6answers
5k views

Is there a way to do something like LVM over NFS?

I realize that since NFS is not block-level, LVM can't be used directly. However: is there a way to combine multiple NFS exports (from, say, 3 servers) into one mount point on a different server? ...
1
vote
4answers
482 views

Software for a scalable, reliable, multi-TB storage array?

I recently picked up a bunch of hardware to build a new home media server. When fully configured, it'll have 20 1TB hotpluggable SATA-II drives running under a Linux system. To date, I've used RAID5 ...
4
votes
4answers
2k views

SSD drives and RAID configurations vs LVM

Background: I'm familiar with the basic RAID levels, and am curious to know if using SSD devices in a RAID0 or RAID5 would be a better deployment than adding them to a large LVM volume. ...
9
votes
5answers
4k views

LVM and disaster recovery

I understand what LVM is and what it accomplishes, but I feel like I am missing some things. Lets say we have two physical drives, sda and sdb. Both are 100 Megs. I put them into VolumeGroup1 and ...
7
votes
4answers
12k views

What is the difference between LVM and LUN

Both seem to be a virtualization layer on top of physical disks. I'm having a hard-time understanding each of them and the difference between them.