reading data from firewire drive stalls, ieee1394 errors appear in messages
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
pm-utils (Ubuntu) |
Invalid
|
Undecided
|
Unassigned |
Bug Description
When playing video from an external ieee1394 drive with mplayer (unsure if it occurs other times too), the video will stall at an irregular interval. After a second or two it will start playing again.
During this time, 'top' reports ~100% CPU utilization waiting for I/O (%wa), and the following lines are dumped in /var/log/messages:
Oct 1 23:13:42 ginger kernel: [260307.000180] ieee1394: sbp2: aborting sbp2 command
Oct 1 23:13:42 ginger kernel: [260307.000213] sd 2:0:0:0: [sdb] CDB: ATA command pass through(16): 85 08 2e 00 00 00 00 00 00 00 00 00 00 40 a1 00
Oct 1 23:13:42 ginger kernel: [260362.000084] ieee1394: sbp2: aborting sbp2 command
Oct 1 23:13:42 ginger kernel: [260362.000103] sd 2:0:0:0: [sdb] CDB: ATA command pass through(16): 85 08 2e 00 00 00 00 00 00 00 00 00 00 40 ec 00
Oct 1 23:13:42 ginger kernel: [260370.000194] ieee1394: sbp2: aborting sbp2 command
Oct 1 23:13:42 ginger kernel: [260370.000221] sd 2:0:0:0: [sdb] CDB: ATA command pass through(16): 85 08 2e 00 00 00 00 00 00 00 00 00 00 40 a1 00
This happens about once every 1-20 minutes, averaging about 4 or 5 minutes (pretty irregular, I don't see a pattern).
Also, going back in the log there is a steady stream of these messages, even when the machine is otherwise idle. So it is not access via mplayer, that is simply a symptom that makes it obvious (and annoying).
The external drive is a 1TB western digital caviar green WD10EADS living in a Macally G-S350SUA firewire 400 enclosure. I presume the ubuntu-bug has already collected by other system information.
ProblemType: Bug
Architecture: i386
Date: Thu Oct 1 23:14:03 2009
DistroRelease: Ubuntu 9.10
Package: linux-generic 2.6.31.11.22
ProcEnviron:
LANGUAGE=en_US:en
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSign
SourcePackage: linux-meta
Uname: Linux 2.6.31-11-generic i686
[This is an automated message. Apologies if it has reached you inappropriately.]
This bug was reported against the linux-meta package when it likely should have been reported against the linux package instead. We are automatically transitioning this to the linux kernel package so that the appropriate teams are notified and made aware of this issue.
If this bug really is a bug in the linux-meta package you can move it back to linux-meta and set the Status to Confirmed, or contact us on the #ubuntu-kernel channel on the FreeNode IRC server. Thanks.