I have the same problem.
Ubuntu: 11.10 64bits (up to date), FS ext4
jbd2 is writing every few secs.
iotop -obtqqq | grep jbd2
18:17:01 905 be/3 root 0.00 B/s 0.00 B/s 0.00 % 0.06 %
[jbd2/sda2-8]
18:17:03 905 be/3 root 0.00 B/s 7.76 K/s 0.00 % 69.12 %
[jbd2/sda2-8]
18:17:05 277 be/3 root 0.00 B/s 31.05 K/s 0.00 % 56.13 %
[jbd2/sda1-8]
18:17:11 277 be/3 root 0.00 B/s 0.00 B/s 0.00 % 4.33 %
[jbd2/sda1-8]
18:17:11 905 be/3 root 0.00 B/s 3.88 K/s 0.00 % 3.95 %
[jbd2/sda2-8]
18:17:12 905 be/3 root 0.00 B/s 3.88 K/s 0.00 % 2.47 %
[jbd2/sda2-8]
18:17:17 277 be/3 root 0.00 B/s 0.00 B/s 0.00 % 3.56 %
[jbd2/sda1-8]
18:17:17 905 be/3 root 0.00 B/s 3.88 K/s 0.00 % 3.20 %
[jbd2/sda2-8]
18:17:23 277 be/3 root 0.00 B/s 0.00 B/s 0.00 % 3.98 %
[jbd2/sda1-8]
18:17:26 905 be/3 root 0.00 B/s 3.88 K/s 0.00 % 3.76 %
[jbd2/sda2-8]
18:17:29 277 be/3 root 0.00 B/s 7.74 K/s 0.00 % 7.27 %
[jbd2/sda1-8]
18:17:32 905 be/3 root 0.00 B/s 34.91 K/s 0.00 % 4.23 %
[jbd2/sda2-8]
18:17:34 277 be/3 root 0.00 B/s 0.00 B/s 0.00 % 4.40 %
[jbd2/sda1-8]
Here is my /etc/fstab:
UUID=f5336321-c585-411c-92b8-8ac474cbebb6 / ext4
errors=remount-ro,noatime,commit=60 0 1
UUID=c5f2e2bd-6292-4733-93f6-da9b3ed0ec4e /home ext4
defaults,noatime,commit=60 0 2
UUID=324f9108-1336-48ce-93d6-cbba235cc683 none swap sw
0 0
Any progress on this issue? Thank you for your time and help!
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https://bugs.launchpad.net/bugs/607560
Title:
jbd2 writing block every 5 - 10 seconds, preventing disk spin-down and
making noise
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