On 05/09/2012 22:46, Paul Eggleton wrote:
On Wednesday 05 September 2012 12:16:44 Gary Thomas wrote:
I just built Yocto/Poky for the raspberrypi, following the
recent thread on this list. I noticed that the resulting SD
image is ~4GB, but most of that space seems to be unused:
$ ssh root@192.168.1.150
Warning: Permanently added '192.168.1.150' (RSA) to the list of known
hosts. root@192.168.1.150's password:
root@raspberrypi:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 57388 46754 7718 86% /
none 93964 156 93808 0% /dev
/dev/mmcblk0p2 57388 46754 7718 86% /media/mmcblk0p2
/dev/mmcblk0p1 19400 8928 10472 46% /media/mmcblk0p1
tmpfs 93964 56 93908 0% /var/volatile
tmpfs 93964 0 93964 0% /dev/shm
tmpfs 93964 0 93964 0% /media/ram
root@raspberrypi:~# cat /proc/partitions
major minor #blocks name
179 0 3977216 mmcblk0
179 1 19456 mmcblk0p1
179 2 3885056 mmcblk0p2
Notice that the physical partition for /dev/mmcblk0p2 is huge but
the file system is only 57MB.
How can I adjust my build and/or resize the file system to actually
use the rest of the SD card?
I suspect a resize2fs call is needed in there. Since the SD card class in
meta-raspberrypi was changed to use the actual ext2 rootfs image instead of
creating a new one on the fly, this has become an issue. I would suggest filing
the issue on the meta-raspberrypi github.
Also, is it possible to just build the SD image much like I do for
other devices like the BeagleBoard, albeit with different contents
in /boot? Sloshing around 4GB images is rather painful, plus it
takes forever to DD it to the SD card.
I must be missing something - do you want the rootfs larger or don't you? If
it's expanded it will take up 4GB minus the boot partition size so you're into
a large dd again...
Cheers,
Paul
I think what he means (or this is what I would like to see ) is a
boot.tar.gz and a rootfs.tar.gz which can then be extracted straight
onto the partitions? Hence only a ~40mb boot write and ~50mb rootfs
write rather than a 4GB dd slog.
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