Adding new disk to volume group
Geofrey Rainey
Geofrey.Rainey at tvnz.co.nz
Wed Sep 26 23:18:45 UTC 2007
Hi,
Here are the steps you need to do (they should be fine, but
Let me know if you have any issues, and the associated error
Because I might have missed something):
Step 1. create a partition on your new disk:
# fdisk /dev/cciss/c0d1
Once within fdisk, type the following (what you enter is between <> )
Command (m for help): <n>
Command action
e extended
p primary partition (1-4)
<p>
Partition number (1-4):
<1>
First cylinder (1- ...): <press enter to select default>
Last cylinder ... : <press enter to select default>
Now, you will find yourself back at the main prompt. You will want to
now
Change the partition's ID to Linux LVM
Command (m for help): <t>
Hex code (type L to list codes): <8e>
<w> - to write the partition table.
Now you should be back in the shell.
Step 2. create a new physical volume:
# pvcreate /dev/cciss/c0d1p1 (I think this is what it should be if you
have only made one single partition on the new disk).
Step 3. Add your new physical volume to your existing volume group
# pvextend VolGroup00 /dev/cciss/c0d1p1
Assuming the above worked, if you now type "vgdisplay -v", you should
see two
physical volumes at the bottom of the output, and an increase in
capacity of
In the following line: "Free PE / Size 98 / 3.06 GB"
Regards,
Geofrey Rainey.
-----Original Message-----
From: Kory Wheatley [mailto:wheakory at isu.edu]
Sent: Thursday, 27 September 2007 9:48 a.m.
To: Geofrey Rainey
Cc: General Red Hat Linux discussion list
Subject: Re: Adding new disk to volume group
fdisk -l
Disk /dev/cciss/c0d0: 36.4 GB, 36414750720 bytes
255 heads, 32 sectors/track, 8716 cylinders Units = cylinders of 8160 *
512 = 4177920 bytes
Device Boot Start End Blocks Id System
/dev/cciss/c0d0p1 1 2 8144 4 FAT16
<32M
/dev/cciss/c0d0p2 * 3 52 204000 83 Linux
/dev/cciss/c0d0p4 285 8716 34402560 f W95
Ext'd (LBA)
/dev/cciss/c0d0p5 285 8064 31742384 8e Linux
LVM
/dev/cciss/c0d0p6 8065 8578 2097104 82 Linux
swap
Disk /dev/cciss/c0d1: 36.4 GB, 36414750720 bytes
255 heads, 32 sectors/track, 8716 cylinders Units = cylinders of 8160 *
512 = 4177920 bytes
Disk /dev/cciss/c0d1 doesn't contain a valid partition table
[root at lx6 cciss]# vgdisplay -v
Finding all volume groups
Finding volume group "VolGroup00"
Fixing up missing format1 size (30.27 GB) for PV /dev/cciss/c0d0p5
--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 7
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 5
Open LV 5
Max PV 0
Cur PV 1
Act PV 1
VG Size 30.25 GB
PE Size 32.00 MB
Total PE 968
Alloc PE / Size 870 / 27.19 GB
Free PE / Size 98 / 3.06 GB
VG UUID psKZl5-5omn-3pqG-S6Ip-i4wR-9OGc-7LSmbP
--- Logical volume ---
LV Name /dev/VolGroup00/LogVol00
VG Name VolGroup00
LV UUID Sng7Z5-PTPx-snkr-nAzW-PkKz-LkUt-7TZTaS
LV Write Access read/write
LV Status available
# open 1
LV Size 4.00 GB
Current LE 128
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 253:0
--- Logical volume ---
LV Name /dev/VolGroup00/LogVol01
VG Name VolGroup00
LV UUID nDG0HT-xL9G-xD9D-emyJ-g4mf-huCj-SOvgnz
LV Write Access read/write
LV Status available
# open 1
LV Size 5.00 GB
Current LE 160
Segments 2
Allocation inherit
Read ahead sectors 0
Block device 253:1
--- Logical volume ---
LV Name /dev/VolGroup00/LogVol02
VG Name VolGroup00
LV UUID P9cXHo-BttJ-IHgo-b8Vw-xPjM-ncxA-Vjcv08
LV Write Access read/write
LV Status available
# open 1
LV Size 1.00 GB
Current LE 32
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 253:2
--- Logical volume ---
LV Name /dev/VolGroup00/LogVol03
VG Name VolGroup00
LV UUID lDHKwJ-Y0Lf-3SR4-NoNr-ZjN2-cH4O-B8718x
LV Write Access read/write
LV Status available
# open 1
LV Size 4.00 GB
Current LE 128
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 253:3
--- Logical volume ---
LV Name /dev/VolGroup00/LogVol04
VG Name VolGroup00
LV UUID jS7ech-ru2u-08JG-ulZp-sPbr-lfSV-2FsCCO
LV Write Access read/write
LV Status available
# open 1
LV Size 13.19 GB
Current LE 422
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 253:4
--- Physical volumes ---
PV Name /dev/cciss/c0d0p5
PV UUID NTkXuW-R4CJ-HqxT-WYAp-hOjb-8YTB-1Fj0vL
PV Status allocatable
Total PE / Free PE 968 / 98
One volume group was only setup "VolGroup00"
Geofrey Rainey wrote:
> Hello,
>
> Firstly, please answer these two questions:
>
> 1. what do you see with this command:
>
> # fdisk -l
>
> 2. How many volume groups do you have? (you can find this information
> With the following command. The -v flag will give more verbose output
> including the logical volumes associated with each volume group):
>
> # vgdisplay -v
>
> Regards,
> Geofrey Rainey
>
> -----Original Message-----
> From: redhat-list-bounces at redhat.com
> [mailto:redhat-list-bounces at redhat.com] On Behalf Of Kory Wheatley
> Sent: Thursday, 27 September 2007 8:51 a.m.
> To: General Red Hat Linux discussion list
> Subject: Adding new disk to volume group
>
> Currently I'm using Red Hat Enterprise 4 that has two disk on a
> Hardware Raid 1 (Smart Array 5i controller) that is setup in a Volume
> Group
> (VolGroup00) with the following logical volumes LogVol00, LogVol01,
> LogVol02, LogVol03, LogVol04, and LogVol05. I recently added two
more
>
> disks in our system/server (these are internal disks on a HP Proliant
> DL380 g2) and set these disk as a Hardware Raid 1. Now I haven't used
> Fdisk or nothing on these new disks.
>
> Here's my question: How do I add the new disks to the already
> existing Volume Group so that I can have more space on the Volume
> Group. Being a
> Raid1 I know your only adding one disk. Could someone send me the
> exact commands to use?
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