ReclaiMe Data Recovery Training

Filesystem Recovery Course - VMFS Recovery Test

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

in the extent header
in the volume header

What is the typical size of large cluster?

512 KB
32 KB
1 MB
4 MB

VMFS stands for

volume manager file system
virtual machine file system
virtual machine file storage
virtual machine file structure

What is the payload size?

1KB
512B
2KB
8KB

What is the typical size of small cluster?

16 KB
4 KB
1MB
8 KB

Check what inode payload can store

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

How are large clusters numbered?

arbitrarily
sequentially from the beginning of the volume

What parts are there in an inode?

metadata, segment numbers, and payload
metadata, parent pointers, and payload
metadata and payload

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 is small file repository stored on a VMFS volume?

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

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