https://github.com/igor-podpalchenko/vmware-vm-deflate

Shell script that automates reducing / resizing thin VMDK disks with XFS filesystem.
https://github.com/igor-podpalchenko/vmware-vm-deflate

Last synced: 29 days ago
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Shell script that automates reducing / resizing thin VMDK disks with XFS filesystem.

• Host: GitHub
• URL: https://github.com/igor-podpalchenko/vmware-vm-deflate
• Owner: igor-podpalchenko
• License: bsd-3-clause
• Created: 2019-03-20T14:24:25.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2019-03-21T13:47:50.000Z (almost 6 years ago)
• Last Synced: 2024-11-11T01:17:23.407Z (3 months ago)
• Language: Shell
• Size: 424 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# vmware-vm-deflate

## Shell script that automates reducing unused free space (deflates) / resizing thin / thick VMDK disks with XFS filesystem.

![Result of unused free space deflation](https://raw.githubusercontent.com/igor-podpalchenko/vmware-vm-deflate/master/result.png)

Script uses buffer disk (Attach VmWare disk with ext/xfs for XFS file dumps storage)

Disk structure (default layout for CentOS):

	- VmWare VMDK file (disk configuration file)

		- VmWare VMDK flat disk file (binary data)

			- Disk Partition Table

				- Primary 1 boot partition - UEFI BootLoader 

				- Primary 2 LVM member -  LVM

					- VOLUME GROUP (VG) CENTOS (name is configured in script)

						- LOGICAL VOLUME (LV) SWAP

						- LOCICAL VOLUME (LV) ROOT (name is configured in script)

							- XFS VOLUME / - root filesystem

              

Script has following algorithm:

 1.  ) Mount BUFFER and GUEST filesystems

 1.  ) Create full filesystem dump using xfsdump for GUEST and store it on BUFFER (/mnt/buffer mounted disk)

 1.  ) Repartition GUEST disk - delete existing LVM part.

 1.  ) Script asks for new LVM partition parameters

 1.  ) Restore XFS dump into new partition

 1.  ) Calculate cut off extent for VMDK file https://virtualman.wordpress.com/2016/02/24/shrink-a-vmware-virtual-machine-disk-vmdk/

 1.  ) Manually edit VMDK descriptor file

 1.  ) Run "vmkfstools -i input.vmdk -d thin output.vmdk"

 1.  ) Attach output.vmdk back to VM

Usage:

Attach new VM and install: Linux debian 3.16

Shutdown target VM and attach its VMDK to fixer VM (`/dev/sdc`).

Attach second buffer virtual disk (`/dev/sdb`)

![Attach ](https://raw.githubusercontent.com/igor-podpalchenko/vmware-vm-deflate/master/disks.png)

Install packages: 

```

	sudo apt-get install parted xfsdump xfsprogs lvm2

```

Run:

```

	sudo ./vm-deflate.sh

```

EDIT script configuration **BEFORE** run.

**BACKUP** your data before resizing.

NO responsibility for data loss.

Uncomment those two lines

     set -x

     trap read debug

if you want step by step disk editing commands tracing.