 | | | RHEL 3 non-responsive due to digital camera | RHEL 3 non-responsive due to digital camera 2004-11-23 - By Reuben D. Budiardja
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Hello,
Yesterday I played around with transfering data from my digital camera (HP
Photosmart 735) set as USB hard drive. I could mount it as /dev/sda1 just
fine many times, and I kept plugging the USB, mount it, transfer file,
unmount it, un-plug the USB. It worked fine for a while until at some point
it sorta crashed / hung the kernel. I plugged it in, then I quickly (maybe to
quick) type "mount /dev/sda1 /mnt/digicam ". Then that command just hung
there. I can ping the machine from another machine, but SSH to the machine
didn 't work. CTRL-ALT-DEL didn 't work either. The only I could do was to ping
it. I waited for over 2 hours (hoping some IO error would time out) before I
decided to push the reset button, as can be seen from the log below.
Included is the log when this happens, as you can see at the very last line
there 's a gap when the system just hung, until I hit the reset button at
around 14.35.
I believe this should not happen. The kernel should be able to deal with this
kind of situation (whatever it is). But I 'm not knowledgeable enough to know
why this happens. Should I file it as a real bug in bugzilla? If I could
reproduce this, what should I do to generate better log when the system is
sorta hung / non-responsive? Any comment or help would be appreciated.
Thanks.
# uname -a
Linux pathfinder 2.4.21-20.ELsmp #1 SMP Wed Aug 18 20:31:57 EDT 2004 i686
athlon i386 GNU/Linux
Nov 22 11:32:47 pathfinder kernel: hub.c: new USB device 02:00.0-4, assigned
address 3
Nov 22 11:32:52 pathfinder /etc/hotplug/usb.agent: Setup usb-storage for USB
product 3f0/4002/100
Nov 22 11:32:53 pathfinder kernel: SCSI device sda: 246017 512-byte hdwr
sectors (126 MB)
Nov 22 11:32:53 pathfinder kernel: sda: Write Protect is off
Nov 22 11:32:53 pathfinder kernel: sda: sda1
Nov 22 11:33:00 pathfinder devlabel: devlabel service started/restarted
Nov 22 11:54:54 pathfinder kernel: usb.c: USB disconnect on device 02:00.0-4
address 3
Nov 22 11:54:54 pathfinder kernel: sda : READ CAPACITY failed.
Nov 22 11:54:54 pathfinder kernel: sda : status = 1, message = 00, host = 0,
driver = 08
Nov 22 11:54:54 pathfinder kernel: Info fld=0xa00 (nonstd), Current sd00:00:
sense key Not Ready
Nov 22 11:54:54 pathfinder kernel: sda : block size assumed to be 512 bytes,
disk size 1GB.
Nov 22 11:54:54 pathfinder kernel: sda: test WP failed, assume Write Enabled
Nov 22 11:54:54 pathfinder kernel: sda: I/O error: dev 08:00, sector 0
Nov 22 11:54:54 pathfinder kernel: I/O error: dev 08:00, sector 0
Nov 22 11:54:55 pathfinder kernel: unable to read partition table
Nov 22 11:54:55 pathfinder kernel: Device not ready. Make sure there is a
disc in the drive.
Nov 22 11:54:55 pathfinder kernel: Device not ready. Make sure there is a
disc in the drive.
Nov 22 11:54:55 pathfinder kernel: sda : READ CAPACITY failed.
Nov 22 11:54:55 pathfinder kernel: sda : status = 1, message = 00, host = 0,
driver = 08
Nov 22 11:54:55 pathfinder kernel: Info fld=0xa00 (nonstd), Current sd00:00:
sense key Not Ready
Nov 22 11:54:55 pathfinder kernel: sda : block size assumed to be 512 bytes,
disk size 1GB.
Nov 22 11:54:55 pathfinder kernel: sda: test WP failed, assume Write Enabled
Nov 22 11:54:55 pathfinder kernel: sda: I/O error: dev 08:00, sector 0
Nov 22 11:54:55 pathfinder kernel: I/O error: dev 08:00, sector 0
Nov 22 11:54:55 pathfinder kernel: unable to read partition table
Nov 22 11:54:55 pathfinder kernel: Device not ready. Make sure there is a
disc in the drive.
Nov 22 11:54:55 pathfinder kernel: Device not ready. Make sure there is a
disc in the drive.
Nov 22 11:54:57 pathfinder kernel: sda : READ CAPACITY failed.
Nov 22 11:54:57 pathfinder kernel: sda : status = 1, message = 00, host = 0,
driver = 08
Nov 22 11:54:57 pathfinder kernel: Info fld=0xa00 (nonstd), Current sd00:00:
sense key Not Ready
Nov 22 11:54:57 pathfinder kernel: sda : block size assumed to be 512 bytes,
disk size 1GB.
Nov 22 11:54:57 pathfinder kernel: sda: test WP failed, assume Write Enabled
Nov 22 11:54:57 pathfinder kernel: sda: I/O error: dev 08:00, sector 0
Nov 22 11:54:57 pathfinder kernel: I/O error: dev 08:00, sector 0
Nov 22 11:54:57 pathfinder kernel: unable to read partition table
Nov 22 11:54:57 pathfinder kernel: Device not ready. Make sure there is a
disc in the drive.
Nov 22 11:54:57 pathfinder kernel: Device not ready. Make sure there is a
disc in the drive.
Nov 22 11:54:57 pathfinder devlabel: devlabel service started/restarted
Nov 22 11:59:32 pathfinder kernel: hub.c: new USB device 02:00.0-4, assigned
address 4
Nov 22 11:59:37 pathfinder /etc/hotplug/usb.agent: Setup usb-storage for USB
product 3f0/4002/100
Nov 22 14:35:00 pathfinder syslogd 1.4.1: restart.
--
Reuben D. Budiardja
Dept. Physics and Astronomy
University of Tennesse, Knoxville, TN
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