Thread: [Under consideration] More efficient and flexible use of internal flash
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titan is offline titan
2010-01-28 , 21:34
Posts: 946 | Thanked: 1,650 times | Joined on Oct 2009 @ Germany
#73
correct, the loopback file is only useful for mass storage mode (or until recently, to keep the camera happy).
regarding ext2: I guess the Nokia engineers have carefully evaluated both fs
and decided that the journaling in ext3 is not really an issue, but rather an advantage
as there is no fsck before mounting (see bugs #7572, 7708)

you can find HOWTOs in this thread and the other one, e.g http://talk.maemo.org/showpost.php?p...1&postcount=66
I agree we should definitely compile the information on the wiki.

I'm really busy with other stuff ATM and I'd appreciate if someone
could collect the links to all relevant posts and summarize the possible solutions
(e.g. default, single /home with optional loopback, swapped vfat+ext3, MMC partitioning,
what should be exported per USB, $HOME layout and integration of MyDocs).
Then we could modify the ke-recv and upstart packages to support all our solutions
and hopefully propagate them to Nokia, so that it works out of the box.

It is quite likely that you will run out of space on NAND if you install additional applications. The optification is still work in progress and I think there
are several design flaws which need to be fixed first (e.g. /var/lib/dpkg or apt should
be moved, /tmp is too small).
Moving /usr completely to eMMC is AFAIK not an option as it may contain some essential components which are required before mounting /home (but I may be wrong).

Originally Posted by Jophish View Post
This seems like the best solution to me. Perhaps now that the camera is working with non FAT partitions the loopback file is not necessary. Although mass storage mode might not behave without it.
Also, would ext2 be preferable to ext3?

What would be useful would be a guide or a script to set this up, I wouldn't really trust myself to do this properly.

One other thing somewhat related. How trustworthy are programs with regards to putting large files in /opt? is it likely that one will ever run out of space on the 256mb NAND flash? Might mounting /usr on the internal card be necessary?