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I am not asking you to cause a hang. Just that you take a stack
trace<br>
when you encounter one.<br>
<br>
If you don't see /proc/.../stack, then CONFIG_STACKTRACE has not
been<br>
enabled in your kernel. You'll have to use the old fashioned method
of<br>
setting up a netconsole server and then issuing "echo t
>/proc/sysrq-trigger"<br>
<br>
On 10/15/2010 12:20 PM, Emil Noether wrote:
<blockquote cite="mid:4CB8A987.8000209@email.cz" type="cite">
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Hi,<br>
<br>
thank you for the reply. Are you sure with this command?, because
when
I run <br>
<br>
find /proc -name stack<br>
<br>
I get no output. But I'm running this command when the server is
OK. I
can't cause the hang right now, because it is 21:00 here so it is
a
"prime time" of my web and my customers are already quite upset.
But I
can try it tommorow morning.<br>
<br>
Regards,<br>
Emil Noether<br>
<br>
On 10/15/2010 07:22 PM, Sunil Mushran wrote:
<blockquote cite="mid:4CB88DBB.2030100@oracle.com" type="cite">
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Take a stack trace of the hang. If you are on 2.6.32, you could
do:<br>
<br>
# find /proc -name stack | while read A ; do D=$(dirname $A);
echo $A;
cat $D/cmdline; echo ; cat $A; echo ; done;<br>
<br>
Attach the output to a bugzilla on oss.oracle.com.<br>
<br>
On 10/15/2010 08:16 AM, Emil Noether wrote:
<blockquote cite="mid:4CB8705E.1010807@email.cz" type="cite">
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charset=ISO-8859-1">
Hi,<br>
<br>
I have a SATABoy2 Nexan storage with 8 disks (SATA Hitachi
HUA721075KLA330) connected to raid 6. Two image servers and
two
webservers. Image servers are connected to storage via iSCSI
(1GBit)
and webservers are connected via fibre (QLogic ISP2432-based
4Gb).
There is ocfs2 filesystem on the storage disk. When I
disconnect
webserver1 (identical with webserver2) everything is ok. But
when I do
"/etc/init.d/o2cb
start",
even without mounting the storage disk (so webserver is
actually doing nothing) my project is down every aprox 30
minutes for
aprox 2 minutes.<br>
<br>
To describe what is down: There is no problem on image
servers, but
there is a problem on webserver2. Mounted ocfs2 disk is not
responding
(I can't run even "df" command), so load goes to aprox 400 and
number
of running apaches reaches it's maximum and so on. The web
page is not
responding.<br>
<br>
I store all of my logs on local disks so not on ocfs2 disk.<br>
<br>
I use 2.6.32 kernel on servers, but I have already tried
change it to
some another, but with no result.<br>
<br>
I use ocfs2-tools in version 1.4.1-1.<br>
<br>
My distro is Debian Lenny (5.0.6) x64.<br>
<br>
My /etc/default/o2cb:<br>
O2CB_ENABLED=true<br>
O2CB_BOOTCLUSTER=ocfs2<br>
O2CB_HEARTBEAT_THRESHOLD=14<br>
O2CB_IDLE_TIMEOUT_MS=10000<br>
O2CB_KEEPALIVE_DELAY_MS=5000<br>
O2CB_RECONNECT_DELAY_MS=2000<br>
<br>
My /etc/ocfs2/cluster.conf:<br>
node:<br>
ip_port = 7777<br>
ip_address = 10.0.0.111<br>
number = 0<br>
name = www1<br>
cluster = ocfs2<br>
<br>
node:<br>
ip_port = 7777<br>
ip_address = 10.0.0.112<br>
number = 1<br>
name = ww2<br>
cluster = ocfs2<br>
<br>
node:<br>
ip_port = 7777<br>
ip_address = 10.0.0.121<br>
number = 2<br>
name = img1<br>
cluster = ocfs2<br>
<br>
node:<br>
ip_port = 7777<br>
ip_address = 10.0.0.122<br>
number = 3<br>
name = img2<br>
cluster = ocfs2<br>
<br>
cluster:<br>
node_count = 4<br>
name = ocfs2<br>
<br>
<br>
Any help is very appreciated,<br>
Best Regards,<br>
<br>
Emil Noether<br>
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