wierd crash problem - filesytem goes down

I have been experiencing a system crash with QNX 6.0 patch B which is
hard to pin down. At seemingly random intervals (while my application
is running), the filesystem seems to go away. An existing telnet
session (this is an embedded sytem with no keyboard) will give the error
“sh: ls: No such file or directory” if I issue the ls command. Any file
access attempts from my application get the same error. If I try to
start a new telnet session I get the error “telnet: Connection closed by
foreign host”. If I run spin on a telnet session (before the crash) I
don’t see any processes go down when it happens, everything looks normal
(but I don’t really know what to look for). The only way to get the
system back is to cycle the power. When it comes back up everything is
fine. When I look in /var/dumps there isn’t anything unexpected there.

Anybody have any idea what this is all about? It is really becoming an
untenable situation, but I have no idea where to look for the problem.
I have run chkfsys, everything seems ok. Would upgrading to QNX 6.1
help? I have avoided this because I am close to release of the app and
don’t want any new problems…Thanks.

“Bruce Davis” <bruce.r.davis@boeing.com> wrote in message
news:3BBC8669.39F862A1@boeing.com

I have been experiencing a system crash with QNX 6.0 patch B which is
hard to pin down. At seemingly random intervals (while my application
is running), the filesystem seems to go away. An existing telnet
session (this is an embedded sytem with no keyboard) will give the error
“sh: ls: No such file or directory” if I issue the ls command. Any file
access attempts from my application get the same error. If I try to
start a new telnet session I get the error “telnet: Connection closed by
foreign host”. If I run spin on a telnet session (before the crash) I
don’t see any processes go down when it happens, everything looks normal
(but I don’t really know what to look for). The only way to get the
system back is to cycle the power. When it comes back up everything is
fine. When I look in /var/dumps there isn’t anything unexpected there.

Anybody have any idea what this is all about? It is really becoming an
untenable situation, but I have no idea where to look for the problem.
I have run chkfsys, everything seems ok. Would upgrading to QNX 6.1
help? I have avoided this because I am close to release of the app and
don’t want any new problems…Thanks.

I don’t know about the problem, but I strongly suggest you update
to QNX6.1. Because of 6.1 new library it’s a major change and you’d
better go through it now then later. For example if the problem you
experience is in the devb-eide and you must upgrade, you just can’t
copy 6.1 devb-eide over 6.0 it’s a little more complexe then that.

  • Mario