Subject: Re: Processes Hanging in a Disk Wait
To: current-users <current-users@NetBSD.ORG>
From: Robert Black <firstname.lastname@example.org>
Date: 06/11/1996 09:58:45
On Jun 11, 10:29am, Manuel Bouyer wrote:
> Subject: Re: Processes Hanging in a Disk Wait
> Robert Black said:
> > Hello,
> > Some time ago I know there was a problem with several ports with processes
> > occassionally hanging in a disk-wait (in vflushbuf). Does anyone know
> > this problem was ever resolved?
> I don't think it has been : Yesterday I saw this on my NetBSD/pmax :
> #ps axu | fgrep 2309
> bouyer 2309 0.0 0.0 1216 0 p4 D+ 5:54PM 0:00.32 as -g -o
> #ps axl | fgrep 2309
> 132 2309 2305 59 -5 0 1216 0 vflush D+ p4 0:00.32 as -g -o regi
> Mon Jun 10 19:50:02 MET DST 1996
> 2 hours to assemble a file is too much :)
> I was also unable to cd to the directory, the process fall in the same,
> unkillable state. Also, at reboot, the machine hand at 'syncing disks...'
Yup, thats the one. The vnode information when its stuck in that state seems to
num_output = 1;
read = 0;
write = 0;
referenced = 0;
flags = VXLOCK | VBWAIT;
I hope this means something to someone.
I can reliably reproduce this by doing an untar of xc-1.tar from the X11R6.1
distribution onto a Quantum Fireball. Doing the same onto other disks
occasionally produces the problem.