Date: Wed, 19 May 2004 21:08:26 +0900 From: Rob <stopspam@users.sourceforge.net> To: freebsd-stable@freebsd.org Subject: system command hangs (unkillable); ps shows 'sbwait' state? Message-ID: <40AB4E3A.6030407@users.sourceforge.net>
next in thread | raw e-mail | index | archive | help
Hi,
I'm using fairly recent FreeBSD-stable on intel PC.
Within last few days, I encountered two hangs of a system command, that
I was unable to resolve. I could not kill the command, even a 'kill -9'
did not work.
1. I had a 2.5 Gb disk mounted on /home/software.
As root, I overloaded the filesystem, with negative percentage left
on the device (from df command). So as root, I did a 'rm -rf' in
/home/software, followed by a 'df -h'. But the df command gave no
response and became unkillable by any means (ctrl-C, kill -9 <pid>).
Using 'ps', I found the df command in the 'sbwait' state.
2. I had a usb device mounted as /dev/da0s1 on /mnt. Mounting (as root)
went all well, but when I unmounted it, as root, the umount command
hanged, again the umount command was in sbwait state.
In this case it was even worse: when I killed the xterminal
where the umount command was hanging, the whole system froze.
Only power off/on helped me out here.
I don't know what happened; don't know how to further investigate this.
Has somebody else similar experiences? Is stability going down for Stable kernel?
Regards,
Rob.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?40AB4E3A.6030407>