disktype File System Sampler
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$Id$ -*- text -*-
File System Sampler
=====================
This package contains images of various file systems. Its purpose is
to aid in the testing and development of the disktype program.
Most images are exactly 8 MB in size and contain empty file
systems. This allows them to be compressed for storage. The file
'template.image' contains 8 MB of zeroes for easy setup of new images.
In CVS, all images are stored in compressed form. The .cvsignore file
makes sure uncompressed images stay out of CVS. The 'explode' and
'implode' scripts handle compression and decompression. Running
'implode -f' also removes the uncompressed images after
re-compression.
Read-only file systems use a collection of test files, contained in
'template-data.tar.gz'. The collection currently includes a large text
file and a hierarchy of several small files. The large text is a piece
of classic German literature (downloaded from Project Gutenberg,
http://gutenberg.net/). The small files tree is the arch/alpha/boot
tree of Linux 2.4.20.
Image List
------------
atari-st-floppy.image
An image of a DD floppy in the ATARI ST GEMDOS format, which is
actually FAT12 with minimal deviations. This image was generated by
the STEEM emulator, not by a real ATARI ST.
befs-intel.image
Contains an empty BeOS BFS file system. It was created on a
Intel x86 system and thus uses little-endian byte order. This image
was contributed by Shadowcaster.
btrfs.image
Contains an empty btrfs file system. It was created using
btrfs-progs 0.18 from a Debian package.
cramfs-i386.image
A Linux cramfs file system with the template files for read-only
file systems. It was created on an i386 system running Debian
GNU/Linux 3.0.
dos-partitions-extended.image
A DOS-style partition map with one extended partition containing
four logical partitions of different sizes. All partitions are
marked as type 0x83 (Linux), but contain no file system. When
creating the table, fdisk was set to use 16 sectors, 1 head, 1024
cylinders.
dos-partitions-primary.image
A DOS-style partition map with four primary partitions of different
sizes (but similar to the image above). All partitions are marked as
type 0x83 (Linux), but contain no file system. When creating the
table, fdisk was set to use 16 sectors, 1 head, 1024 cylinders.
ext2.image
Contains an empty ext2 file system, i.e. without journaling. It was
created on an i386 system running Debian GNU/Linux 3.0. All tuning
and compatibility options were left at their default.
ext3.image
Contains an empty ext3 file system with an internal journal. (The
presence of the journal is the only difference to the above one.)
It was created on an i386 system running Debian GNU/Linux 3.0. All
tuning and compatibility options were left at their default.
ext3-journal.image
Contains an empty external journal for an ext3 file system. It was
created on an i386 system running Debian GNU/Linux 3.0.
ext4.image
Contains an empty ext4 file system with an internal journal. It was
created on an i386 system running Debian GNU/Linux 5.0. All tuning
and compatibility options were left at their default.
ext4-journal.image
Contains an empty external journal for an ext4 file system. It was
created on an i386 system running Debian GNU/Linux 5.0.
ext4dev.image
Contains an empty ext4 file system with an internal journal, marked
for use with ext4dev. It was created on an i386 system running
Debian GNU/Linux 5.0. All tuning and compatibility options were left
at their default.
ext4dev-journal.image
Contains an empty external journal for an ext4 file system, marked
for use with ext4dev (assuming there is such a marking for external
journals). It was created on an i386 system running Debian GNU/Linux
5.0.
fat12-floppy.image
An image of a 3.5" HD floppy (1.44 MB) with an empty FAT12 file
system as generated by Microsoft Windows XP.
freebsd-disk.image
A hard disk image containing a FreeBSD-style partition layout. That
is, there is a DOS partition map with a single partition (slice in
BSD terms), which contains a BSD disklabel, which contains three UFS
partitions (also partitions in BSD terms) and one swap
partition. FreeBSD boot code is present in all possible places.
gpt-empty.image
Contains a GPT partition table without any partitions. Created by
GNU parted.
gpt.image
Contains a GPT partition table with a single Basic Data
partition. The partition has an empty ext2 file system on
it. Created by GNU parted.
hfs.image
Contains an empty HFS (non-Plus) file system. Created by the
newfs_hfs command on Mac OS X 10.2.4.
hfs-plus.image
Contains an empty HFS Plus file system. Created by the newfs_hfs
command on Mac OS X 10.2.4.
hfs-plus-wrapped.image
Contains an empty HFS Plus file system, wrapped in a dummy HFS file
system for compatibility with earlier versions of Mac OS and Mac
firmware. Created by the newfs_hfs command on Mac OS X 10.2.4.
iso9660-hybrid.image
An ISO9660 and HFS hybrid file system with the template files for
read-only file systems. This image uses ISO9660 Level 1 plus both
the Joliet and Rock Ridge extensions. An addition, there is a HFS
volume structure pointing to the same files. This image was created
by mkisofs 1.14 using the command "mkisofs -J -r -hfs -V Hybrid -o
iso9660-hybrid.image template-data".
iso9660-joliet.image
An ISO9660 file system with the template files for read-only file
systems. This image uses ISO9660 Level 1 plus the Joliet extension
(additional descriptors with Unicode names). It was created by
mkisofs 1.14 using the command "mkisofs -J -V 'ISO9660 Joliet' -o
iso9660-joliet.image template-data".
iso9660-plain.image
An ISO9660 file system with the template files for read-only file
systems. This image uses just ISO9660 Level 1, no extensions. It was
created by mkisofs 1.14 using the command "mkisofs -iso-level 1 -V
ISO9660_PLAIN -o iso9660-plain.image template-data".
iso9660-rockridge.image
An ISO9660 file system with the template files for read-only file
systems. This image uses ISO9660 Level 1 plus the Rock Ridge
extension. It was created by mkisofs 1.14 using the command "mkisofs
-r -V 'ISO9660_ROCKRIDGE' -o iso9660-rockridge.image template-data".
jfs.image
Contains an empty JFS file system. It was created on an i386 system
running Debian GNU/Linux 3.0. This image is 16 MB in size because
that's the minimum size for JFS (at least mkfs.jfs said so).
linux-swap-v[12]-*-[48]k.image
The images matching this pattern contain Linux swap space in various
formats. "v1" designates the old format ("SWAP-SPACE", limited to
128M on 4K-page architectures), while "v2" designates the new format
("SWAPSPACE2", subversion 1). The rest of the image name gives the
architecture and page size. Currently there are "i386-4k",
"alpha-8k", "sarm-4k", and "sparc-8k". The architectures may also
differ in endianness, which can be detected with the new format.
minix-v1-14.image
minix-v1-30.image
minix-v2-14.image
minix-v2-30.image
Various empty Minix file systems, featuring all combinations of
version 1 and version 2 inode format and 14 and 30 char maximum file
name length. (Each combination has its own magic number.) All were
created on an i386 system running Debian GNU/Linux 3.0.
reiser4.image
An empty Reiser4 file system. The file system was created on an i386
system running Debian GNU/Linux 3.1, with reiser4progs 1.0.2.
reiserfs-3.5-nonstd.image
An empty ReiserFS file system in the old 3.5 format. To make it fit
into 8 MB, it uses a smaller-than-default journal. Unfortunately
this causes it to use the "ReIsEr3Fs" magic (instead of "ReIsErFs"),
which isn't recognized by vanilla 2.4 kernels. The file system was
created on an i386 system running Debian GNU/Linux 3.0, with
reiserfsprogs 3.x.1b.
reiserfs-3.5.image
An empty ReiserFS file system in the old 3.5 format. It is 40 MB in
size to have enough room for the default journal area. The file
system was created on an i386 system running Debian GNU/Linux 3.0,
with reiserfsprogs 3.x.1b.
reiserfs-3.6-nonstd.image
An empty ReiserFS file system in the new 3.6 format. To make it fit
into 8 MB, it uses a smaller-than-default journal. Unfortunately
this causes it to use the "ReIsEr3Fs" magic (instead of
"ReIsEr2Fs"), which isn't recognized by vanilla 2.4 kernels. The
file system was created on an i386 system running Debian GNU/Linux
3.0, with reiserfsprogs 3.x.1b.
reiserfs-3.6.image
An empty ReiserFS file system in the new 3.6 format. It is 40 MB in
size to have enough room for the default journal area. The file
system was created on an i386 system running Debian GNU/Linux 3.0,
with reiserfsprogs 3.x.1b.
romfs.image
A Linux romfs file system with the template files for read-only file
systems. It was created on an i386 system running Debian GNU/Linux
3.0.
squashfs-1.0-be.image
A Linux squashfs file system with the template files for read-only
file systems. It was created on an i386 system using mksquashfs 1.2,
but with the '-be' switch that sets it to create the file system
with big-endian structure contents.
squashfs-1.0-i386.image
A Linux squashfs file system with the template files for read-only
file systems. It was created on an i386 system using mksquashfs 1.2.
squashfs-2.0-be.image
A Linux squashfs file system with the template files for read-only
file systems. It was created on an i386 system using mksquashfs
2.1r2 with the '-2.0' and '-be' options.
squashfs-2.0-i386.image
A Linux squashfs file system with the template files for read-only
file systems. It was created on an i386 system using mksquashfs
2.1r2 with the '-2.0' option.
squashfs-2.1-be.image
A Linux squashfs file system with the template files for read-only
file systems. It was created on an i386 system using mksquashfs
2.1r2 with the '-be' option.
squashfs-2.1-i386.image
A Linux squashfs file system with the template files for read-only
file systems. It was created on an i386 system using mksquashfs
2.1r2.
template.image
The empty template image. Created using the command
"dd if=/dev/zero of=template.image bs=8192 count=1024".
template-data.tar.bz2
A bzip2-compressed tar archive containing the files to use for
read-only file systems. The file was generated by GNU tar. It
doubles as a test for transparent decompression and tar archive
recognition.
template-data.tar.gz
A gzip-compressed tar archive containing the files to use for
read-only file systems. The file was generated by GNU tar. It
doubles as a test for transparent decompression and tar archive
recognition.
udif-sparse.image
An Apple UDIF disk image with an empty HFS+ file system. The image
uses the sparse variant of the UDRW format. It does not have the
usual UDIF header at the end, just the sparse header at the
beginning.
udif-udco.image
An Apple UDIF disk image with an empty HFS+ file system. The image
is in the UDCO format, a compressed read-only format. It was
generated from udif-udrw.image through format conversion.
udif-udro.image
An Apple UDIF disk image with an empty HFS+ file system. The image
is in the UDRO format, a uncompressed but sparse read-only
format. It was generated from udif-udrw.image through format
conversion.
udif-udrw.image
An Apple UDIF disk image with an empty HFS+ file system. The image
uses the UDRW format, which actually doesn't have the UDIF header at
the end, but is a plain sector-by-sector image.
udif-udzo.image
An Apple UDIF disk image with an empty HFS+ file system. The image
is in the UDZO format, a zlib-compressed read-only format. It was
generated from udif-udrw.image through format conversion.
ufs-darwin.image
ufs-darwin-old.image
Both contain an empty UFS file system as created by the newfs
command in Mac OS X 10.2.4. The "-old" image was created with the
"-O" switch, which is supposedly "Creates a 4.3BSD format
filesystem" (from the man page) for compatibility with "older boot
ROMs". The man page doesn't mention just how old that would be.
The newfs command wrote the following information to stdout when
run:
disk1: 16384 sectors in 32 cylinders of 16 tracks, 32 sectors
8.0MB in 2 cyl groups (16 c/g, 4.00MB/g, 992 i/g)
xfs.image
Contains an empty XFS file system. It was created on an i386 system
running Debian GNU/Linux 3.0. All options were left at their
defaults, so the file system has an internal log, no realtime
section, and version 2 inodes (whatever that is ;-) ).
EOF