From: "Ohlsson, Fredrik (GE Healthcare, consultant)" <Fredrik.Ohlsson@ge.com>
To: <linux-ext4@vger.kernel.org>
Subject: ext4 settings in an embedded system
Date: Wed, 14 Nov 2012 11:41:59 +0100 [thread overview]
Message-ID: <C0489DC3A08C21449F8FE865472DC75204834F08@BUDMLVEM03.e2k.ad.ge.com> (raw)
Hi,
I would like to have advice regarding features and options.
I am working with an embedded system equipped with an IDE Flash Disk and the ext4 filesystem. I have identified 3 problems that I would like to solve in our product. The power is abruptly turned off from time to time, this has sometimes resulted in broken Superblock (inode8) and empty files with size 0 bytes. It also happens that file changes is not committed to disk even if minutes pass before a power loss. This is very undesirable and expensive in our case, we are searching for a solution or a workaround to the problems.
List with my problems I like to solve:
1. Broken Superblock (inode8).
2. Empty files, size 0.
3. Very long auto commit times, several minutes with default settings.
Is ext4 a bad choice for an embedded system with I 1Gb IDE Flash Disk and Debian 2.6.32-5-686? Should we change filesystem?
I am planning to set the mount flags: barrier=1, commit=1 and data=journal, is this the way to go with an embedded system and ext4?
Is there more ext4 options/settings I can use to get an embedded system reliable when a power loss occurs?
Best Regards
Fredrik Ohlsson
Software Engineer
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next reply other threads:[~2012-11-14 10:42 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-14 10:41 Ohlsson, Fredrik (GE Healthcare, consultant) [this message]
2012-11-14 20:51 ` ext4 settings in an embedded system Theodore Ts'o
2012-11-15 8:42 ` Artem Bityutskiy
2012-11-15 10:01 ` Andrey Sidorov
2012-11-15 10:38 ` Artem Bityutskiy
2012-11-16 15:40 ` Eric Sandeen
2012-11-19 10:42 ` Artem Bityutskiy
2012-11-16 15:44 ` Eric Sandeen
2012-11-19 10:43 ` Artem Bityutskiy
2012-11-16 15:56 ` Eric Sandeen
2012-11-16 16:18 Ohlsson, Fredrik (GE Healthcare, consultant)
2012-11-16 16:58 ` Eric Sandeen
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