06-24-2007
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..
10 More Discussions You Might Find Interesting
1. Solaris
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... (7 Replies)
Discussion started by: aribault
7 Replies
2. Solaris
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? (1 Reply)
Discussion started by: BG_JrAdmin
1 Replies
3. Red Hat
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. (2 Replies)
Discussion started by: itik
2 Replies
4. HP-UX
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 (4 Replies)
Discussion started by: lamoul
4 Replies
5. Filesystems, Disks and Memory
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... (1 Reply)
Discussion started by: builder88
1 Replies
6. Solaris
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... (1 Reply)
Discussion started by: RoiDanton
1 Replies
7. Solaris
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... (4 Replies)
Discussion started by: KhawHL
4 Replies
8. Red Hat
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 ... (16 Replies)
Discussion started by: ikn3
16 Replies
9. UNIX for Dummies Questions & Answers
Please suggest me how do I create LVM snapshots in linux.
Best regards,
Vishal (5 Replies)
Discussion started by: admin_db
5 Replies
10. Linux
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... (1 Reply)
Discussion started by: Clovis_Sangrail
1 Replies
LEARN ABOUT NETBSD
disktab
DISKTAB(5) BSD File Formats Manual DISKTAB(5)
NAME
disktab -- disk description file
SYNOPSIS
#include <disktab.h>
DESCRIPTION
disktab is a simple database which describes disk geometries and disk partition characteristics. It is used to initialize the disk label on
the disk. The format is patterned after the termcap(5) terminal data base. Entries in disktab consist of a number of `:' separated fields.
The first entry for each disk gives the names which are known for the disk, separated by `|' characters. The last name given should be a
long name fully identifying the disk.
The following list indicates the normal values stored for each disk entry.
Name Type Description
ty str Type of disk (e.g. removable, winchester)
dt str Type of controller (e.g. SMD, ESDI, floppy)
ns num Number of sectors per track
nt num Number of tracks per cylinder
nc num Total number of cylinders on the disk
sc num Number of sectors per cylinder, ns*nt default
su num Number of sectors per unit, sc*nc default
se num Sector size in bytes, DEV_BSIZE default
sf bool Controller supports bad144-style bad sector forwarding
rm num Rotation speed, rpm, 3600 default
sk num Sector skew per track, default 0
cs num Sector skew per cylinder, default 0
hs num Headswitch time, usec, default 0
ts num One-cylinder seek time, usec, default 0
il num Sector interleave (n:1), 1 default
d[0-4] num Drive-type-dependent parameters
bs num Boot block size, default BBSIZE
sb num Superblock size, default SBSIZE
ba num Block size for partition `a' (bytes)
bd num Block size for partition `d' (bytes)
be num Block size for partition `e' (bytes)
bf num Block size for partition `f' (bytes)
bg num Block size for partition `g' (bytes)
bh num Block size for partition `h' (bytes)
fa num Fragment size for partition `a' (bytes)
fd num Fragment size for partition `d' (bytes)
fe num Fragment size for partition `e' (bytes)
ff num Fragment size for partition `f' (bytes)
fg num Fragment size for partition `g' (bytes)
fh num Fragment size for partition `h' (bytes)
oa num Offset of partition `a' in sectors
ob num Offset of partition `b' in sectors
oc num Offset of partition `c' in sectors
od num Offset of partition `d' in sectors
oe num Offset of partition `e' in sectors
of num Offset of partition `f' in sectors
og num Offset of partition `g' in sectors
oh num Offset of partition `h' in sectors
pa num Size of partition `a' in sectors
pb num Size of partition `b' in sectors
pc num Size of partition `c' in sectors
pd num Size of partition `d' in sectors
pe num Size of partition `e' in sectors
pf num Size of partition `f' in sectors
pg num Size of partition `g' in sectors
ph num Size of partition `h' in sectors
ta str Partition type of partition `a' (4.2BSD filesystem, swap, etc)
tb str Partition type of partition `b'
tc str Partition type of partition `c'
td str Partition type of partition `d'
te str Partition type of partition `e'
tf str Partition type of partition `f'
tg str Partition type of partition `g'
th str Partition type of partition `h'
FILES
/etc/disktab
SEE ALSO
getdiskbyname(3), disklabel(5), disklabel(8), newfs(8)
HISTORY
The disktab description file appeared in 4.2BSD.
BSD
June 5, 1993 BSD