[DISCUSSION][POLL]interest in running ics/jb off SD?

[bigsupersquid]

after much wankiness, I am running bobz cm10 completely from a class 4 16 GB card using tasssadar's multirom.
had to install it to NAND and SD from zip, and then manually copy it from /system, /data, and /cache to the card after a first boot using ADB in recovery.
multirom is not very happy with it, for some reason /system gets remounted r/o somewhere after init.rc runs, and when /system is made r/o it remounts the rest of /sd-ext r/o as well. so later in the boot from sd, I have to use adb shell to remount /system as r/w.
however, it is using the full size Gapps, market works, and I installed all the stock live wallpapers I could find to /system/app just for fun (I found 5, black hole, phase beam, nexus, bubbles, and water.)
I'm poking around at it now testing... I just remember the ril data glitches annoyed me in this rom last time I tried it.

 

[Encerspay45]

Great idea.

 

[glarepate]

a loop-mounted filesystem?
I don't remember if I got those to work in init.rc or not.
but there is a squashfs loop-mount commented out in all the cyanogen init.rc's I've looked at, so it might well work as you say.
Worth a shot if my current avenue gets too annoying, or as a cross-check with benchmarking to see which prevails.
thanks for the input.

Would that just require a kernel with the loop driver already in it rather than being loaded during the init process? Just guessing ...

I am running the mirage 2.6.32.9-073012 kernel in my ROM:

the loop driver isn't being loaded as a module:

# cat /proc/modules
# [null output]



# cat /proc/filesystems
nodev sysfs
nodev rootfs
nodev bdev
nodev proc
nodev cgroup
nodev tmpfs
nodev sockfs
nodev pipefs
nodev anon_inodefs
nodev inotifyfs
nodev devpts
ext3
ext2
ext4
nodev ramfs
vfat
yaffs
yaffs2


There could easily be a reason why it isn't normally included in the kernel and I wouldn't know.

But perhaps other kernels include the loop driver.

 

[tvall]

All the kernels I've seen support loop if I remember correctly.

I know that loop mounting /data works. I once had my /data in a luks container. Had to modify the init.rc a lot to get it to work, but it worked well.

 

[bigsupersquid]

I also believe loop is built in and enabled by default.

ls /dev/block/

and look at all the loop devices.
thekraven's CAI with virgin patch runs nice off sd like Bobz cm10, with the same weirdness about remounting /system r/w through adb to get boot to complete.
and removed the a2sd scripts from init.d since it's already using the sd-ext for /data and dalvik.

 

[bigsupersquid]

I was unaware that bobz cm10 would run with thekraven's CAI kernel
so they can dual boot :-$ at least with CAI in NAND.

Why have I never seen mention that TWRP recovery has a TERMINAL command entry function in it????
That is way too cool and I never saw it until testing the multirom version of TWRP with a V kernel. (very pretty.)

It's looking like the loop mount for /system may well be the way to go, that read-only thing is bugging me. It doesn't show up with errors in logcat until after init.d scripts run, right after vold starts up.

 

[Phatninja55]

Would it be possible to format the sdcard to have a separate partition for each boot, system, etc. Then have int.d mount each partition? Then we could have system as r/o and whatever else needs to be r/w or r/o.

 

[tvall]

You could do that, but you can achieve practically the same think with loop mount files which are simpler to make.

 

[bigsupersquid]

Would it be possible to format the sdcard to have a separate partition for each bofot, system, etc. Then have int.d mount each partition? Then we could have system as r/o and whatever else needs to be r/w or r/o.

first time i messed with booting from sd i tried that.
seems android won't "see" more than 3 partitions if i remember
right.
plus loop mounting is easy...

 

[Phatninja55]

I would try this if you updated multirom to the version that works with multiple kernels.

Sent from my unknown using Tapatalk 2

 

[bigsupersquid]

i'm testing v19 now, saw the one you're talking about, but it makes me nervous cause it reflashes boot every time you change roms.
i can post you porting instructions for it, but i wouldn't post it for upload myself.
to get this to work the way i want will require rebuilding init for whatever rom is being tweaked, and my free time is thin, so low expectations are a good idea.

 

[Phatninja55]

I didn't know it reflashed boot every time you change roms, it was awhile ago that I "glanced" at the post.