
Mucho antes de lo que creiamos Andrew Morton nos sorprende con los “primeros” parches lanzados en la lista de kernel, claro digo primeros porque son los que se reportan como lanzados por el para los tests de rigor.
Lo que necesitamos para tener nuestro ext4 disponible en prueba:
Kernel 2.6.18 estable
Parche para update a 2.6.19-rc1
Parche akpm para update a 2.6.19-rc1-mm
Update para e2fsprogs
Luego he aqui un pequeño howto por parte de Andrew Morton:
Added the ext4 filesystem. Quick usage instructions:
- Grab updated e2fsprogs from
ftp://ftp.kernel.org/pub/linux/kernel/people/tytso/e2fsprogs-interim/
- It’s still mke2fs -j /dev/hda1
- mount /dev/hda1 /wherever -t ext4dev
- To enable extents,
mount /dev/hda1 /wherever -t ext4dev -o extents
- The filesystem is compatible with the ext3 driver until you add a file
which has extents (ie: `mount -o extents’, then create a file).
- When comparing performance with other filesystems, remember that
ext3/4 by default offers higher data integrity guarantees than most. So
when comparing with a metadata-only journalling filesystem, use `mount -o
data=writeback’. (Although this doesn’t seem to make much difference with
ext3).
And you might as well use `mount -o nobh’ too.
Making the journal larger than the mke2fs default often helps
performance with metadata-intensive workloads.
- Added the high-resolution timers and dynamic-ticks code. Please be sure
to cc tglx@linutronix.de>, mingo@elte.hu and johnstul@us.ibm.com if it blows
up.
Tamaños:
-rw-r–r– 1 techno users 1.7M Oct 10 06:23 2.6.19-rc1-mm1.bz2
-rw-r–r– 1 techno users 40M Sep 20 03:56 linux-2.6.18.tar.bz2
-rw-r–r– 1 techno users 5.4M Oct 5 03:27 patch-2.6.19-rc1.bz2
Recursos:
Barrapunto | Nota sobre el lanzamiento
Linux Kernel Mail List | Mail oficial y notas al margen
Linux Kernel Mail List | Instrucciones Oficiales
Kernel Trap | Ext4 explicado