Hi,
I have a server booted into sysresccd (mini-linux OS) with 1 40 GB disk attached
I am trying to create a volume group and restore another server into the new one
However, when I try to create a partition for /boot it seems that my VG in LVM is not recognized anymore
These are the configuration of the server I am trying to restore
Code:
[root@galtest ~]# fdisk -l /dev/sda
Disk /dev/sda: 64.4 GB, 64424509440 bytes
64 heads, 32 sectors/track, 61440 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 100 102384 83 Linux
/dev/sda2 101 61440 62812160 8e Linux LVM
[root@galtest ~]# lvmdiskscan |grep sda
/dev/sda1 [ 99.98 MB]
/dev/sda2 [ 59.90 GB] LVM physical volume
[root@galtest ~]# vgs
VG #PV #LV #SN Attr VSize VFree
vg00 1 8 0 wz--n- 59.88G 18.72G
[root@galtest ~]# df -h /dev/sda1
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 97M 35M 58M 38% /boot
[root@galtest ~]# df -h /dev/sda2
Filesystem Size Used Avail Use% Mounted on
- 2.8G 72K 2.8G 1% /dev
On my new server I am creating a new VG using /dev/sda and then 2 partitions (same as the above) however when I create the partitions the VG is not visible anymore
see below for more information
Code:
root@sysresccd /etc/lvm % fdisk -l /dev/sda
Disk /dev/sda: 42.9 GB, 42949672960 bytes
64 heads, 32 sectors/track, 40960 cylinders, total 83886080 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xeac5c5ef
Device Boot Start End Blocks Id System
root@sysresccd /etc/lvm % vgcreate vg00 /dev/sda
No physical volume label read from /dev/sda
Physical volume "/dev/sda" successfully created
Volume group "vg00" successfully created
root@sysresccd /etc/lvm % vgs
VG #PV #LV #SN Attr VSize VFree
vg00 1 0 0 wz--n- 40.00g 40.00g
root@sysresccd /etc/lvm % pvs
PV VG Fmt Attr PSize PFree
/dev/sda vg00 lvm2 a-- 40.00g 40.00g
root@sysresccd /etc/lvm % fdisk /dev/sda
Welcome to fdisk (util-linux 2.21.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0xa701bbb6.
Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p): p
Partition number (1-4, default 1):
Using default value 1
First sector (2048-83886079, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-83886079, default 83886079): +100M
Partition 1 of type Linux and of size 100 MiB is set
Command (m for help): n
Partition type:
p primary (1 primary, 0 extended, 3 free)
e extended
Select (default p): p
Partition number (1-4, default 2):
Using default value 2
First sector (206848-83886079, default 206848):
Using default value 206848
Last sector, +sectors or +size{K,M,G} (206848-83886079, default 83886079):
Using default value 83886079
Partition 2 of type Linux and of size 39.9 GiB is set
Command (m for help): t
Partition number (1-4): 2
Hex code (type L to list codes): 8e
Changed system type of partition 2 to 8e (Linux LVM)
Command (m for help): a
Partition number (1-4): 1
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
root@sysresccd /etc/lvm % fdisk -l /dev/sda
Disk /dev/sda: 42.9 GB, 42949672960 bytes
64 heads, 32 sectors/track, 40960 cylinders, total 83886080 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xa701bbb6
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 206847 102400 83 Linux
/dev/sda2 206848 83886079 41839616 8e Linux LVM
root@sysresccd /etc/lvm % vgs
No volume groups found
I don't find it all too surprising that a volume group on a disk you just partitioned with fdisk has disappeared. It kinda makes sense to partition the disk before creating volume groups and the like. If you remove the partitions again with fdisk, your volume group should re-appear.
The subject of your thread (Creating /boot partition for LVM VG) is a tad confusing. I trust you were not trying to create an LVM volume for the /boot partition? That's not a great idea because GRUB can't read those.
You have to first create the LVM partitions using fdisk/gdisk/parted/gparted etc., then use pvcreate to create the physical volumes, before you can create a new volume group or add a physical volume to an existing volume group.
Hi ,
Background : I am installing the KVM based RHEL OS VM on one of the HP pro-line physical server.
Issue: While doing custom layout partition, i want to create partition lvm based , for example :lv_root.
But problem is that, whenever i am creating the partition, its showing /sda1... (2 Replies)
Hello All,
I have a Red Hat Linux 5.9 Server installed with one hard disk & 2 Partitions created on it as follows,
/boot - Linux Partition & another is
LVM - One VG & under that 5-6 Logical volumes(var,opt,home etc).
Here my requirement is to take out 1GB of space from LVM ( Any logical... (5 Replies)
Hi,
I need a suggesstion i have 2 disk if i installed OS / root partition by making Lvm in one disk and data in other disk also with the lvm, means 2 different lvms.
Is making LVM partition for OS disk will the performacne will be good?
Can i make 2 different lvm one is for OS and other for... (1 Reply)
Hi guys,
let me start by saying I appreciate your assistance always.
I was practicing how to encrypt partitions in my server. I encrypted an lvm partition using luks and when I tried to remove the partition using lvremove, I get this message
Logical volume vg10/lvol1 is used by another... (2 Replies)
hi all
while formatting hard disk i am getting following error.
Partition 1 ends at 266338338
It must be between 34 and 143374704.
label error: EFI Labels do not support overlapping partitions
Partition 8 overlaps partition 1.
Warning: error writing EFI.
Label failed.
I have formatted the... (2 Replies)
I have a RHEL6 guest running on vmware esx server and the root disk size is 30G and i increased the disk size and create another partition /dev/sda3 but i do not know how to increase the size of the VG and then intrun LV .. can anyone help me on this .
fdisk -l /dev/sda
Disk /dev/sda:... (1 Reply)
Hi,
I have red hat enterprise 4. I would like to add more space on my lvm from the first partition that is not lvm type.
Here's the config
# fdisk -l
Disk /dev/sda: 73.4 GB, 73406611456 bytes
255 heads, 63 sectors/track, 8924 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes... (6 Replies)
I have 40GB HD with mepis8, swap, MBR and under flags word boot.
I also have a 160 GB external with a few Linux OS, no swaps, no extended etc. I am total Linux no MS
I would feel more secure by resizing that sda1 partition and creating a /boot partition with the MBR housed there. Is that a... (1 Reply)