I have the same problem.
"
root@boson:~# uname -a
Linux boson 3.0.0-16-generic #28-Ubuntu SMP Fri Jan 27 17:44:39 UTC 2012 x86_64
x86_64 x86_64 GNU/Linux
"
"
root@boson:~# hdparm -i /dev/sda
/dev/sda:
Model=TOSHIBA MK5059GSXP, FwRev=GN001U, SerialNo=31TPC530T
Config={ Fixed }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=8192kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=976773168
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
AdvancedPM=yes: unknown setting WriteCache=enabled
Drive conforms to: Unspecified: ATA/ATAPI-3,4,5,6,7
* signifies the current active mode
"
I think the problem is explained in here:
https://www.linuxquestions.org/questions/debian-26/why-root-is-remounted-with-commit%3D0-%3D600-specified-in-fstab-at-the-end-of-start-up-923132/
For example:
"
root@boson:~# mount
...
/dev/mapper/tanty-home on /home/tanty type ext4
(rw,commit=0,commit=0,commit=0,commit=600,commit=600,commit=0,commit=0,commit=0,commit=0,commit=0,commit=0,commit=600,commit=600,commit=0,commit=0,commit=0)
...
"
As you see, my hard disks have been remounted with the commit parameter
once and again. In Ubuntu, this is done by:
"
root@boson:~# dpkg -L pm-utils
...
/usr/lib/pm-utils/power.d/journal-commit
...
"
Basically, it remounts the HD with "commit=0" when in AC power and with
commit=600 in BAT power.
I've applied this patch:
"
root@boson:~# cat /usr/lib/pm-utils/power.d/journal-commit.diff
--- /usr/lib/pm-utils/power.d/journal-commit.orig 2012-02-17
10:45:13.302448184 +0200
+++ /usr/lib/pm-utils/power.d/journal-commit 2012-02-17 10:38:49.864546816
+0200
@@ -2,7 +2,7 @@
. ${PM_FUNCTIONS}
-JOURNAL_COMMIT_TIME_AC=${JOURNAL_COMMIT_TIME_AC:-0}
+JOURNAL_COMMIT_TIME_AC=${JOURNAL_COMMIT_TIME_AC:-60}
JOURNAL_COMMIT_TIME_BAT=${JOURNAL_COMMIT_TIME_BAT:-600}
help() {
"
Don't know yet if it is solved. I will report.
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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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