Zenoss 4.2.5: Increase Appliance Disk Size

To increase the Zenoss appliance disk:

Shutdown Zenoss virtual machine.
Expand disk in vSphere.
Start virtual machine and connect either via console or SSH.

Commands are highlighted in bold.

[root@localhost ~]# 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   *           1          19      152586   83  Linux
/dev/sda2              20         280     2096482+  82  Linux swap / Solaris
/dev/sda3             281        2610    18715725   8e  Linux LVM

[root@localhost ~]# fdisk /dev/sda

The number of cylinders for this disk is set to 5221.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
   (e.g., DOS FDISK, OS/2 FDISK)

Command (m for help): p

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   *           1          19      152586   83  Linux
/dev/sda2              20         280     2096482+  82  Linux swap / Solaris
/dev/sda3             281        2610    18715725   8e  Linux LVM

Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
p
Selected partition 4
First cylinder (2611-5221, default 2611):
Using default value 2611
Last cylinder or +size or +sizeM or +sizeK (2611-5221, default 5221):
Using default value 5221

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.

WARNING: Re-reading the partition table failed with error 16: Device or resource busy.
The kernel still uses the old table.
The new table will be used at the next reboot.
Syncing disks.
[root@localhost ~]# reboot

[root@localhost ~]# 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   *           1          19      152586   83  Linux
/dev/sda2              20         280     2096482+  82  Linux swap / Solaris
/dev/sda3             281        2610    18715725   8e  Linux LVM
/dev/sda4            2611        5221    20972857+  83  Linux

[root@localhost etc]# pvcreate /dev/sda4
  Physical volume "/dev/sda4" successfully created

[root@localhost etc]# vgextend vg_root /dev/sda4
  Volume group "vg_root" successfully extended

[root@localhost etc]# vgdisplay vg_root | grep "Free"
  Free  PE / Size       669 / 20.91 GB

[root@localhost etc]# lvextend -L+20G /dev/vg_root/lv_root
  Extending logical volume lv_root to 28.00 GB
  Logical volume lv_root successfully resized

[root@localhost etc]# resize2fs /dev/vg_root/lv_root
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/vg_root/lv_root is mounted on /; on-line resizing required
Performing an on-line resize of /dev/vg_root/lv_root to 7340032 (4k) blocks.
The filesystem on /dev/vg_root/lv_root is now 7340032 blocks long.

[root@localhost etc]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_root-lv_root
                       28G  7.4G   19G  29% /
/dev/mapper/vg_root-lv_var_lib_mysql
                      5.8G  761M  4.8G  14% /var/lib/mysql
/dev/mapper/vg_root-lv_zenoss_perf
                      3.0G   84M  2.7G   3% /opt/zenoss/perf
/dev/sda1             145M   13M  125M  10% /boot
tmpfs                 1.5G   56K  1.5G   1% /dev/shm