'camcontrol rescan all' stuck in kernel (firewire)

3 msg	zfs generate a lot of IO ?
5 msg	libstdc++ build problem
3 msg	mount_reiserfs support not present in CURRENT?
2 msg	LIST_END doesn't exist at queue.h
2 msg	Re: FreeBSD 7.0 sysctl?
3 msg	fun fun fun. no networking
4 msg	USB Attach issues?
20 msg	Xorg 7.2 update
2 msg	HEADS UP (preliminary): KBI breakage is about t...

'camcontrol rescan all' stuck in kernel (firewire)
\ Alexander Leidinger (27 May 2007)
. \ Hidetoshi Shimokawa (27 May 2007)
. . \ Alexander Leidinger (28 May 2007)

3 msg	internal error on compiling HEAD
11 msg	HEADS-UP: gcc-4.2 import appears to miscompile ...
3 msg	ZFS: LOR in dbuf.c
4 msg	problems with make.conf
1 msg	make release broken in 7-current ?
17 msg	Segment failed SYNCOOKIE?
7 msg	gcc memory consumption: amd64 v i386
1 msg	PS/2 mouse disappearing with gcc-4.2 built kernel
7 msg	howto find build date for ports ?
5 msg	gcc-4.2.0 update and f77

Subject:	'camcontrol rescan all' stuck in kernel (firewire)
Group:	Freebsd-current
From:	Alexander Leidinger
Date:	27 May 2007

Hi,

I had a harddisk connected via firewire (not mounted, only played with
dd), disconneted it and issued a "camcontrol rescan all". I got some
kernel messages about "(probeX:sbp:0:x:0): Error 22" and "Unretryable
Error" and then the process is stuck there since yesterday (if it
matters, on boot there's a long pause between the same messages at
boot time and continuing with the userland part of the boot, maybe 20
or 30 seconds). ps shows camcontrol is in state "D+".

In kdb I see the following backtrace:
sched_switch
mi_switch
sleepq_wait
_sleep
cam_periph_runccb
xptioctl
devfs_ioctl_f
ioctl

The rest of the system works just fine. I tried "show xxx" (everything
what shows up with "lock" or "sleep" when I just type "show"), but
nothing showed up.

Anything else I can provide/do to find the cause?

Bye,
Alexander.

--
Life is a POPULARITY CONTEST! I'm REFRESHINGLY CANDID!!

http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID = B0063FE7
http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID = 72077137
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