Re: [cooking] Some figures for comparing various live boot modes

[Philippe Lelédy <slitaz@xxxxxxxxx>]

On 02/01/2011 14:37, Philippe Lelédy wrote:
> On 02/01/2011 12:18, Philippe Lelédy wrote:
> > modularity will be built in ( it is yet here, to a large extend:
>
> HOW-TO:
>
> -1- Standardize on loram-smallcdrom
> -2- all modules should be put in a *single* directory, on whatever
> partition you choose.
> -3- for building a new module:
> a) decide which previous modules it depends on, and which pkg will make
> up the new module (this is the only *hard* part)
> b) using aufs, stack all these modules r/o + one top layer r/w (easy,
> see tazlito as example)
> c) tazpkg install-list the-list-of-pkg-my-new-module-is-made-of --root
> my-aufs-stack
> d) mksquashfs my-aufs-branche-rw modules/dir/rootfs-my-new-module
> -4- add this in bootloader
> loram=UUID=<uuid-of-module-partition>,modules/dir/

Yes, I tried this HowTo and it works exactly as I said:

Here is the result

cat /proc/cmdline
initrd=../initfs-lz-330LCR 
loram=LABEL=p1-liveOSs,liveOSs/slitaz-cooking/phl/sqfs-0/ lang=fr_FR 
kmap=fr-latin1 rw vga=normal autologin home=LABEL="p3-home" 
BOOT_IMAGE=../bzImage

ll -h /media/p1-liveOSs/liveOSs/slitaz-cooking/phl/sqfs-0/

-rw-r--r--    1 root     root      972.0K Jan  9 19:20 rootfs.40pm.gz
-rw-r--r--    1 root     root      141.3M Dec 31 00:00 rootfs.80base.gz

sudo losetup
/dev/loop0: 0 /mnt/rootfs.40pm.gz
/dev/loop1: 0 /mnt/rootfs.80base.gz

mount 

/dev/loop0 on /mnt/.fs.40pm.gz type squashfs (ro,relatime)
/dev/loop1 on /mnt/.fs.80base.gz type squashfs (ro,relatime)
none on / type aufs (rw,relatime,si=3cf302cf)

cat /sys/fs/aufs/si_3cf302cf/br*
/mnt/.rw=rw
/mnt/.fs.40pm.gz=rr
/mnt/.fs.80base.gz=rr

Of course, I will end up with tazlito gen-distro, but using modules like 
this helps me find out which packages I actually need for my daily use. 
Once this list is stable enough, I rebuild the distro.

BTW, this rootfs.40pm.gz contains pm-utils and its prerequisites which 
gives me the feature I missed the much: pm-suspend ! b/c with out 
power-management an OS is useless for me.

Ph.L.


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