ReclaiMe Data Recovery Training

Filesystem Recovery Course - VMFS Recovery Test

Check what inode payload can store

up to 256 pointers to small clusters
128 pointers to small clusters and 128 indirect block pointers
up to 256 pointers to large clusters
up to 256 indirect block pointers
file content for files less than 1 KB
128 pointers to large clusters and 128 pointers to small clusters

How inodes, indirect blocks table and small file repository are stored?

as regular files in the root filesystem directory
as special metadata structures

What metadata is stored in an inode?

date and time of file creation, the file name, and the file type
date and time of file creation, the file size, and the file type
date and time of file creation, the file size, and file name

Where is indirect blocks table stored on a VMFS volume?

in the end of the volume
one copy in the beginning and other – in the end
in the beginning of the volume

What is common between VMFS and EXT?

both filesystems use inodes
both filesystems use two different cluster sizes
both filesystems use a dedicated repository for small files

Where are small clusters stored?

inside a special file
arbitrarily on the volume
in inodes

What happens when a file is deleted?

payload in the corresponding inode is overwritten with zeros
metadata in the corresponding inode is overwritten with zeros
an entire inode is overwritten with zeros

Where are the numbers of the first and the last segments stored?

in the extent header
in the volume header

What is the recommended data recovery approach for a multi-disk VMFS volume?

first reassemble the volume from extents and then do filesystem recovery
do RAID0 recovery first and then do filesystem recovery
do filesystem recovery on each disk separately

Where does VMFS store files smaller than 1 KB?

inside the corresponding inodes
in a dedicated repository
in indirect blocks table

We have a mailing list in which we talk about interesting cases we encounter and share some tips and tricks.