Is there a tutorial on how to create RAID 1 on top of lvm?

Login or Register to Ask a Question and Join Our Community

Is there a tutorial on how to create RAID 1 on top of lvm?

Tags

Login to Discuss or Reply to this Discussion in Our Community

Top Forums UNIX for Advanced & Expert Users Is there a tutorial on how to create RAID 1 on top of lvm?

06-24-2007

Registered User

24, 0

Join Date: May 2007

Last Activity: 10 May 2009, 3:58 PM EDT

Posts: 24

Thanks Given: 0

Thanked 0 Times in 0 Posts

Is there a tutorial on how to create RAID 1 on top of lvm?

Hi, there are tons of RAID1 tutorials, but none of them deal with lvm. The problem is that I want to expand my current lvm partition over RAID1 rather than creating a new lvm partition after RAID1 is created.
My master harddrive has lvm partition. I'm wondering how to create a RAID1 image of it?Thanks

--- Logical volume ---
LV Name /dev/VolGroup00/LogVol00
VG Name VolGroup00
LV UUID KBIoRf-RjpU-tJ1O-ZMdz-32ZT-iNnw-JE0YRE
LV Write Access read/write
LV Status available
# open 1
LV Size 73.41 GB
Current LE 2349
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 253:0

--- Logical volume ---
LV Name /dev/VolGroup00/LogVol01
VG Name VolGroup00
LV UUID dUGkAw-Z0PV-9ZF4-ao0w-N0GG-z6oL-LljKDt
LV Write Access read/write
LV Status available
# open 1
LV Size 992.00 MB
Current LE 31
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 253:1

Last edited by onthetopo; 06-24-2007 at 07:20 PM..

onthetopo

View Public Profile for onthetopo

Find all posts by onthetopo

06-24-2007

Registered User

2,965, 5

Join Date: Jan 2007

Last Activity: 8 January 2008, 6:50 PM EST

Posts: 2,965

Thanks Given: 0

Thanked 5 Times in 5 Posts

That's the wrong way round to build RAID.

The idea behind RAID is that it can survive disk failure. If you have a disk failure LVM may be trashed first so it can't find the segments that make up the parts of the volume. If RAID is directly on a disk and a few tracks get trashed, RAID can still step over those and recover data either side.

porter

View Public Profile for porter

Find all posts by porter

Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Linux

Centos 7.2 Convert single LVM to RAID Mirror Reinstall BootLoader

Hello, I am trying to convert a single-drive Centos 7.2 installation with LVM into a two-disk mdadm mirror with mrrored LVM. I was able to follow the excellent instructions at: http://www.dgoradia.com/creating-a-raid1-mirrored-on-an-existing-centos-on-lvm/and did create a two-disk mirror...

2. UNIX for Dummies Questions & Answers

How to create LVM snapshots?

Please suggest me how do I create LVM snapshots in linux. Best regards, Vishal

3. Red Hat

Create volume using LVM over 2 physical disks

I wanted to know how we can combine volumes over 2 physical drives. # fdisk -l Disk /dev/sda: 42.9 GB, 42949672960 bytes 255 heads, 63 sectors/track, 5221 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 ...

4. Solaris

Software RAID on top of Hardware RAID

Server Model: T5120 with 146G x4 disks. OS: Solaris 10 - installed on c1t0d0. Plan to use software raid (veritas volume mgr) on c1t2d0 disk. After format and label the disk, still not able to detect using vxdiskadm. Question: Should I remove the hardware raid on c1t2d0 first? My...

5. Solaris

Solaris LVM Raid 0+1

Hi, I tried to setup a Riad 0+1 but I found no step by step manual to follow so I tried on my own ;) I'd already configured a mirror for the OS on my Solaris machines so I had an idea where to start. I have 9 drives in the server. 1. I configured the first two as a mirror for the OS. 2. I...

6. Filesystems, Disks and Memory

Partition management: lvm? fdisk? parted? (on RAID)

Hello, I have a RHEL system with two 500GB hard drives in RAID 1 (I think hardware, but not 100% certain - any way to tell?). It looks like it was just set up in default configuration with a small boot partition and one huge partition for the rest, which composes a LVM volume. I want...

7. HP-UX

How to reduce LVM to create another LVM

Hi, I'm new to HP-UX. I have LVM on /var with 92Gig. I would like to reduce it to create another LVM for Oracle client with 800 meg or so. How to do it. I'm running 11.iv3 Thanks

8. Red Hat

create /var lvm during install

Hi All, How do I create /var as LVM type during install? I want my new OS to have /var as LVM so that I could extend it on the fly. Thanks for any comment you may add.

9. Solaris

raid 5 using solaris 9 LVM

if i want to create a raid 5 device on 3 disks I have, can I make multiple metadevices? all the example i see on the internet make use of the slice 2 placing the entire disk into the raid5 device. what if i make 3 identical slices on each disk, and make 3 raid 5 metadevices? will that work?

10. Solaris

RAID 1 + 0 with LVM

Hi, I am on Solaris 9. I have 4 disks that I want to mount in RAID 1+0 with LVM First I initialize the devices ; for example : metainit d102 c1t2d0s6 metainit d103 c1t3d0s6 metainit d104 c1t4d0s6 metainit d105 c1t5d0s6 then I make the mirrors : metainit d120 -m d102 metattach d120...

Login or Register to Ask a Question