idle USB harddrive spins up with 2.6.28-rc7 and 2.6.27.8, but not with 2.6.26.8
From: CSights
Date: Tue Dec 09 2008 - 18:18:50 EST
Hi LKML,
I've got an IDE harddrive in a USB external enclosure. It is /dev/sda.
When I'm compiling the kernel or doing other things on /dev/hda1 the USB
harddrive (sda1) will spin-up or not spin-down. This happens with kernel
versions 2.6.28-rc7 and 2.6.27.8, but not with 2.6.26.8.
Also, I'm using laptop-mode-tools to turn on laptop mode.
I used the "btrace" script on /dev/sda while compiling a kernel on /dev/hda1.
While running 2.6.26.8 btrace did not output anything. With 2.6.27.8 and
2.6.28-rc7 a load of stuff was going on with /dev/sda.
I don't know what it means, but it is probably what is causing the harddrive
to spin up. :) Hopefully someone besides me will consider this
a "regression". Let me know if you need any other info.
Thanks!
C.
Using 2.6.26.8, btrace of /dev/sda while compiling on /dev/hda1
did not output anything.
Using 2.6.27.8, btrace of /dev/sda while compiling on /dev/hda1
Dec 9 11:15:32 localhost logger: 8,0 0 1 0.000000000 1109 A
WS 14375 + 8 <- (8,1) 14312
Dec 9 11:15:32 localhost logger: 8,0 0 2 0.000006705 1109 Q
WS 14375 + 8 [kjournald]
Dec 9 11:15:32 localhost logger: 8,0 0 3 0.000043581 1109 G
WS 14375 + 8 [kjournald]
Dec 9 11:15:32 localhost logger: 8,0 0 4 0.000065651 1109 P
N [kjournald]
Dec 9 11:15:32 localhost logger: 8,0 0 5 0.000076267 1109 I
W 14375 + 8 [kjournald]
Dec 9 11:15:32 localhost logger: 8,0 0 6 0.000300318 1109 D
W 14375 + 8 [kjournald]
Dec 9 11:15:32 localhost logger: 8,0 0 7 0.000423518 1109 U
N [kjournald] 1
Dec 9 11:15:32 localhost logger: 8,0 0 8 0.010028373 3 C
W 14375 + 8 [0]
Dec 9 11:15:35 localhost logger: 8,0 0 9 3.219049689 1109 A
WS 14383 + 8 <- (8,1) 14320
Dec 9 11:15:35 localhost logger: 8,0 0 10 3.219058350 1109 Q
WS 14383 + 8 [kjournald]
Dec 9 11:15:35 localhost logger: 8,0 0 11 3.219095505 1109 G
WS 14383 + 8 [kjournald]
Dec 9 11:15:35 localhost logger: 8,0 0 12 3.219115061 1109 P
N [kjournald]
Dec 9 11:15:35 localhost logger: 8,0 0 13 3.219127074 1109 I
W 14383 + 8 [kjournald]
Dec 9 11:15:35 localhost logger: 8,0 0 14 3.219344699 1109 D
W 14383 + 8 [kjournald]
Dec 9 11:15:35 localhost logger: 8,0 0 15 3.219543607 1109 U
N [kjournald] 1
Dec 9 11:15:35 localhost logger: 8,0 0 16 3.229477275 3 C
W 14383 + 8 [0]
Dec 9 11:15:40 localhost logger: 8,0 0 17 8.372429561 1109 A
WS 14391 + 8 <- (8,1) 14328
Dec 9 11:15:40 localhost logger: 8,0 0 18 8.372437663 1109 Q
WS 14391 + 8 [kjournald]
Dec 9 11:15:40 localhost logger: 8,0 0 19 8.372474539 1109 G
WS 14391 + 8 [kjournald]
Dec 9 11:15:40 localhost logger: 8,0 0 20 8.372496329 1109 P
N [kjournald]
Dec 9 11:15:40 localhost logger: 8,0 0 21 8.372508063 1109 I
W 14391 + 8 [kjournald]
Dec 9 11:15:40 localhost logger: 8,0 0 22 8.372729320 1109 D
W 14391 + 8 [kjournald]
Dec 9 11:15:40 localhost logger: 8,0 0 23 8.372839669 1109 U
N [kjournald] 1
Dec 9 11:15:40 localhost logger: 8,0 0 24 8.382665781 3 C
W 14391 + 8 [0]
Dec 9 11:15:49 localhost logger: 8,0 0 25 17.082110738 1109 A
WS 14399 + 8 <- (8,1) 14336
Dec 9 11:15:49 localhost logger: 8,0 0 26 17.082119119 1109 Q
WS 14399 + 8 [kjournald]
Dec 9 11:15:49 localhost logger: 8,0 0 27 17.082156834 1109 G
WS 14399 + 8 [kjournald]
Dec 9 11:15:49 localhost logger: 8,0 0 28 17.082180859 1109 P
N [kjournald]
Dec 9 11:15:49 localhost logger: 8,0 0 29 17.082193431 1109 I
W 14399 + 8 [kjournald]
Dec 9 11:15:49 localhost logger: 8,0 0 30 17.082418878 1109 D
W 14399 + 8 [kjournald]
Dec 9 11:15:49 localhost logger: 8,0 0 31 17.082527831 1109 U
N [kjournald] 1
Dec 9 11:15:49 localhost logger: 8,0 0 32 17.092196101 3 C
W 14399 + 8 [0]
...etc...
Using kernel 2.6.28-rc7, btrace of /dev/sda while compiling on /dev/hda1
Dec 9 17:48:37 localhost logger: 8,0 0 1 0.000000000 1129 A
WS 12567 + 8 <- (8,1) 12504
Dec 9 17:48:37 localhost logger: 8,0 0 2 0.000005587 1129 Q
WS 12567 + 8 [kjournald]
Dec 9 17:48:37 localhost logger: 8,0 0 3 0.000038553 1129 G
WS 12567 + 8 [kjournald]
Dec 9 17:48:37 localhost logger: 8,0 0 4 0.000061460 1129 P
N [kjournald]
Dec 9 17:48:37 localhost logger: 8,0 0 5 0.000074032 1129 I
W 12567 + 8 [kjournald]
Dec 9 17:48:37 localhost logger: 8,0 0 6 0.000266235 1129 D
W 12567 + 8 [kjournald]
Dec 9 17:48:37 localhost logger: 8,0 0 7 0.000372394 1129 U
N [kjournald] 1
Dec 9 17:48:37 localhost logger: 8,0 0 8 0.010619230 3 C
W 12567 + 8 [0]
Dec 9 17:49:19 localhost logger: 8,0 0 9 41.770854333 1129 A
WS 12575 + 8 <- (8,1) 12512
Dec 9 17:49:19 localhost logger: 8,0 0 10 41.770862156 1129 Q
WS 12575 + 8 [kjournald]
Dec 9 17:49:19 localhost logger: 8,0 0 11 41.770895121 1129 G
WS 12575 + 8 [kjournald]
Dec 9 17:49:19 localhost logger: 8,0 0 12 41.770917191 1129 P
N [kjournald]
Dec 9 17:49:19 localhost logger: 8,0 0 13 41.770929483 1129 I
W 12575 + 8 [kjournald]
Dec 9 17:49:19 localhost logger: 8,0 0 14 41.771122524 1129 D
W 12575 + 8 [kjournald]
Dec 9 17:49:19 localhost logger: 8,0 0 15 41.771247680 1129 U
N [kjournald] 1
Dec 9 17:49:19 localhost logger: 8,0 0 16 41.780654465 3 C
W 12575 + 8 [0]
Dec 9 17:49:22 localhost logger: 8,0 0 17 44.820030708 1129 A
WS 12583 + 8 <- (8,1) 12520
Dec 9 17:49:22 localhost logger: 8,0 0 18 44.820038530 1129 Q
WS 12583 + 8 [kjournald]
Dec 9 17:49:22 localhost logger: 8,0 0 19 44.820069539 1129 G
WS 12583 + 8 [kjournald]
Dec 9 17:49:22 localhost logger: 8,0 0 20 44.820091050 1129 P
N [kjournald]
Dec 9 17:49:22 localhost logger: 8,0 0 21 44.820103622 1129 I
W 12583 + 8 [kjournald]
Dec 9 17:49:22 localhost logger: 8,0 0 22 44.820291914 1129 D
W 12583 + 8 [kjournald]
Dec 9 17:49:22 localhost logger: 8,0 0 23 44.820386898 1129 U
N [kjournald] 1
Dec 9 17:49:22 localhost logger: 8,0 0 24 44.830135906 3 C
W 12583 + 8 [0]
...etc...
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/