Re: Which filesystem for target?

David Stewart

Anybody got an answer for Chris?

(A lot of folks are traveling back from a conference, Chris, so might explain slowness)
Sent from my Blackberry

----- Original Message -----
From: Chris Tapp [mailto:opensource@...]
Sent: Friday, October 28, 2011 03:11 PM
To: yocto@... <yocto@...>
Subject: [yocto] Which filesystem for target?

A bit of an open-ended question, but...

Which is the 'best' filesystem to use for an embedded device that's
using a CF card?

It needs to survive loss-of-power, have a RO root filesystem, allow
user configuration data to persist and (ideally) only use 'Busybox'

This seems to imply the use of a partition for booting (mount RO) and
a second partition or a loop-device on the boot partition for
persistent storage.

I would normally go for ext3, but Busybox doesn't support it (afaik).
The Busybox tune2fs also only supports -L, so I can't stop 'disk needs
checking after <n> mounts' messages.

Is btrfs a suitable alternative?

Chris Tapp


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