mounting partitions from within of the vmware’s .vmdk file

i’m taking backups of vmware esxi vms weekly using ghettovcb. it has been working greatly for many years. once in a while i need to recover a particular file from particular backup. there’s quicker way than just restoring the whole vm!

few tools are needed:

root@host:~# apt-get install qemu-utils mount kpartx

my vmdk files are in the 2gbsparse format:

root@host:~# ls -la app0-1*
-rw-r--r-- 1 ninja 1019  664535040 Aug  9 00:14 app0-1-s001.vmdk
-rw-r--r-- 1 ninja 1019 1065877504 Aug  9 00:14 app0-1-s002.vmdk
-rw-r--r-- 1 ninja 1019  648413184 Aug  9 00:14 app0-1-s003.vmdk
-rw-r--r-- 1 ninja 1019  352387072 Aug  9 00:14 app0-1-s004.vmdk
-rw-r--r-- 1 ninja 1019  316538880 Aug  9 00:14 app0-1-s005.vmdk
-rw-r--r-- 1 ninja 1019  469565440 Aug  9 00:14 app0-1-s006.vmdk
-rw-r--r-- 1 ninja 1019  570818560 Aug  9 00:14 app0-1-s007.vmdk
-rw-r--r-- 1 ninja 1019  573767680 Aug  9 00:14 app0-1-s008.vmdk
-rw-r--r-- 1 ninja 1019        798 Aug  9 00:14 app0-1.vmdk

but monolithic ones should work fine too

first i need to convert the .vmdk format to qemu’s qcow2:

root@host:~# qemu-img convert app0-1.vmdk 1.qemu2

then find partitions within it and mount one that i’m interested in:

root@host:~# losetup /dev/loop7 1.qemu2
root@host:~# kpartx -va /dev/loop7
root@host:~# ls -la /dev/mapper/loop*
lrwxrwxrwx 1 root root 7 Dec  1 18:39 /dev/mapper/loop7p1 -> ../dm-2
root@host:~# mount /dev/mapper/loop7p1 /mnt/tmp

and the cleanup:

root@host:~# umount /mnt/tmp
root@host:~# kpartx -d /dev/loop7
root@host:~# losetup -d /dev/loop7

2017-11-21 edit:

guestmount -a server1-0.vmdk -i --ro /mnt/test/

worked fine on the ghettoVCB-created backup.

Leave a Reply

Your email address will not be published. Required fields are marked *


(Spamcheck Enabled)