* squashfs-tools 1:3.2r2-9exp1: LZMA as default, ZLIB support via -nolzma
option, file format version 3
-* squashfs-lzma-tools 4.0-1: LZMA as default, no ZLIB support/options, file format 4
+* squashfs-lzma-tools 4.0-2: ZLIB as default, LZMA support via -lzma option,
+file format version 4
* squashfs-lzma-tools 3.3-1: LZMA as default, ZLIB support via -nolzma option,
file format version 3
for LZMA is pending and should dramatically simplify the situation for
developers as well as users as soon as it's available mainline.
-Using squashfs-lzma-tools 4.0-1 on the build system
+Using squashfs-lzma-tools 4.0-2 on the build system
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-squashfs-lzma-tools 4.0-1 is available via the grml repositories. It provides
-the mksquashfs-lzma and unsquashfs-lzma binaries and the package does NOT
-conflict with the squashfs-tools package (you can install both of them at the
-same time).
+squashfs-lzma-tools 4.0-2 is available via the grml repositories. It provides
+the mksquashfs-lzma and unsquashfs-lzma binaries. The package does NOT conflict
+with Debian's squashfs-tools package (you can install both of them at the same
+time).
The packages can be downloaded from
link:http://deb.grml.org/pool/main/s/squashfs-lzma-tools/[http://deb.grml.org/pool/main/s/squashfs-lzma-tools/]
It provides support for the new squashfs file format version 4 and therefore
-requires kernel versions newer than 2.6.28-grml[64].
-
-It does NOT provide support for ZLIB compression. If you need ZLIB support
-please use squashfs-tools 1:4.0-1 instead and use the '-z' option of grml-live
-or set "SQUASHFS_OPTIONS='-nolzma'" in the grml-live configuration file.
+requires kernel versions newer than 2.6.28-grml[64]. It supports LZMA as well as
+ZLIB compression. Just use the defaults for enabling LZMA or use grml-live's
+'-z' option if you want to use ZLIB instead.
* Kernel 2.6.23-grml[64]: does not work
* Kernel 2.6.26-grml[64]: does not work
* Kernel 2.6.28-grml[64]: does not work
* Kernel 2.6.31-grml[64]: works
+////////////////////////////////////////////////////////////////////////////////
+[IMPORTANT]
+
+Do NOT use a blocksize different than the default (131072 / 128kb). The kernel
+will very probably oops then - so please do not touch the '-b' option of
+mksquashfs.
+////////////////////////////////////////////////////////////////////////////////
+
[NOTE]
-Please use squashfs-lzma-tools 4.0-1 if you want to remaster grml releases
-MORE RECENT than 2009.05 using the LZMA compression.
+
+Please use squashfs-lzma-tools >=4.0-2 from Grml if you want to remaster any
+grml release being MORE RECENT than 2009.05.
Using squashfs-tools 1:4.0-1 on the build system
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
squashfs-tools 1:4.0-1 is available in Debian/unstable and Debian/testing. It
-provides the mksquashfs and unsquashfs binaries and the package does NOT
-conflict with the squashfs-lzma-tools 4.0-1 package (you can install both of
+provides the mksquashfs and unsquashfs binaries. The package does NOT
+conflict with the squashfs-lzma-tools 4.0-2 package (you can install both of
them at the same time).
The packages can be downloaded from
requires kernel versions newer than 2.6.28-grml[64].
It does NOT support LZMA compression. If you need LZMA support please use
-squashfs-lzma-tools instead.
+Grml's squashfs-lzma-tools (see section above) instead.
* Kernel 2.6.23-grml[64]: does not work
* Kernel 2.6.26-grml[64]: does not work
* Kernel 2.6.28-grml[64]: does not work
-* Kernel 2.6.31-grml[64]: supposed to work (verification in progress)
+* Kernel 2.6.31-grml[64]: works
[NOTE]
-Please use squashfs-tools 1:4.0-1 if you want to remaster grml releases
+Please use squashfs-tools 1:4.0-1 only if you want to remaster grml releases
MORE RECENT than 2009.05 using the ZLIB compression.
Using squashfs-lzma-tools 3.3-1 on the build system
grml-live you can get commercial support via
link:http://grml-solutions.com/[Grml Solutions].
+[[lzma-vs-zlib]]
+How much is the difference between LZMA and ZLIB compression?
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+ISO size (bs = blocksize):
+
+[width="45%",cols="3,^2,^2,^2"]
+|============================================================
+|ISO |LZMA (256kB bs) |LZMA (128kB bs)|ZLIB
+|grml_sid |666M | WIP | 771M
+|grml_squeeze |659M | WIP | 761M
+|grml_lenny |624M | WIP | 723M
+|grml64_sid |677M | WIP | 791M
+|grml64_squeeze |671M | WIP | 785M
+|grml64_lenny |639M | WIP | 745M
+|grml-medium_sid |208M | WIP | 236M
+|grml-medium_squeeze |206M | WIP | 234M
+|grml-medium_lenny |193M | WIP | 220M
+|grml64-medium_sid |213M | WIP | 245M
+|grml64-medium_squeeze |213M | WIP | 244M
+|grml64-medium_lenny |201M | WIP | 231M
+|grml-small_sid |102M | WIP | 118M
+|grml-small_squeeze |101M | WIP | 117M
+|grml-small_lenny |97M | WIP | 112M
+|grml64-small_sid |103M | WIP | 120M
+|grml64-small_squeeze |103M | WIP | 120M
+|grml64-small_lenny |99M | WIP | 116M
+|============================================================
+
+Build time of grml-medium's squashfs file (depends on your system, though just
+to get the ratio between the different options):
+
+* 10 minutes and 4 seconds with LZMA default blocksize (128k)
+* 7 minutes 27 seconds with LZMA and blocksize 256k
+* 6 minutes and 8 seconds with LZMA blocksize 512k
+* 1 minute and 40 seconds with ZLIB
+
[[install-local-files]]
How to I install further files into the chroot/ISO?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
projects / grml-live.git / blobdiff