Not a centos specific question here, but if anyone can save me from
shooting myself in the foot would appreciate any pointers.... I have an
older centos 4.7 box that I recently replaced with a newer one running
centos 5.3. I'd like to add the hard disk from the older one to the
newer one before I scrap it for good. I don't care about the data on
it, would just like the extra drive on the newer one for my home lan usage.
The disk layout on the older one is a 2 partition (/boot and /) with /
being a logical volume. Laying out what I think I need to do looks like
this :
1. yank old drive and cable up to newer system, expecting this 2nd drive
to now be /dev/sdb on the new box
2. pvcreate /dev/sdb1
3. vgextend VolGroup00 /dev/sdb1 (VolGroup00 is the volume group name on
both system, pretty much default installs in both cases)
3. lvextend -l+100% /dev/VolGroup00
4. resize2fs /
The disk in the old system looks like :
[root@cow ~]# fdisk -l /dev/hda
Disk /dev/hda: 122.9 GB, 122942324736 bytes
255 heads, 63 sectors/track, 14946 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 13 104391 83 Linux
/dev/hda2 14 14946 119949322+ 8e Linux LVM
[root@cow ~]# fdisk -l -u /dev/hda
Disk /dev/hda: 122.9 GB, 122942324736 bytes
255 heads, 63 sectors/track, 14946 cylinders, total 240121728 sectors
Units = sectors of 1 * 512 = 512 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 63 208844 104391 83 Linux
/dev/hda2 208845 240107489 119949322+ 8e Linux LVM
[root@cow ~]# pvscan
PV /dev/hda2 VG VolGroup00 lvm2 [114.38 GB / 32.00 MB free]
Total: 1 [114.38 GB] / in use: 1 [114.38 GB] / in no VG: 0 [0 ]
[root@cow ~]# vgscan
Reading all physical volumes. This may take a while...
Found volume group "VolGroup00" using metadata type lvm2
[root@cow ~]# lvscan
ACTIVE '/dev/VolGroup00/LogVol00' [113.84 GB] inherit
ACTIVE '/dev/VolGroup00/LogVol01' [512.00 MB] inherit
I'm curious if my 1-4 seem sane, or if I'll need to cfdisk and nuke the
existing partitions on the disk once in the newer system, or if pvcreate
will do what I need.
If there is a preferred method to my madness, and you can save me from
shooting a hole in my foot, appeciate any comments.
Thanks in Advance,
Jerry Queirolo
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